Annapurna Base Camp Trek Best Time: Month-by-Month Guide (2026)

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October and November are the best months to trek to Annapurna Base Camp. Skies are clear, temperatures at 4,130m sit between -10 and 8 degrees Celsius, and the trail is dry. March and April are the second-best window, with rhododendron forests in bloom below 3,000m. The monsoon (June to August) brings heavy rain and leech activity. Winter (December to February) is cold but possible with proper gear, and you will have the trail nearly to yourself.

October and November are the best months to trek to Annapurna Base Camp. Skies are clear, temperatures at 4,130m sit between -10 and 8 degrees Celsius, and the trail is dry. March and April are the second-best window, with rhododendron forests in bloom below 3,000m. The monsoon (June to August) brings heavy rain and leech activity. Winter (December to February) is cold but possible with proper gear, and you will have the trail nearly to yourself.

#Quick verdict: which month should you pick?

The answer depends on what you care about most. Some trekkers want clear mountain views above everything else. Others want the rhododendron forests. Some want fewer people on the trail or lower costs.

This table scores each month across the five factors that matter most on the Annapurna Base Camp trek.

If you want the best views: October. Post-monsoon air is washed clean. Visibility is at its annual peak.

If you want flowers: Late March through mid-April. Rhododendron forests between Ghorepani and Chhomrong turn red, pink, and white.

If you want solitude: December through February, or September. You will share teahouses with a handful of trekkers instead of dozens.

If you want the lowest cost: Off-season months (December through February, June through September). Guides and lodges run discounts of 15 to 30 percent.

If this is your first trek: October or April. Both give you reliable weather, open teahouses, and enough fellow trekkers on the trail to feel comfortable.

#Month-by-month breakdown

#January

January is the coldest month at Annapurna Base Camp. Daytime temperatures at 4,130m hover around -5 to 0 degrees Celsius. Nights drop to -15 or colder. Snow covers the trail above Deurali (3,230m) most of the season, and some teahouses between Machhapuchhre Base Camp and ABC close for winter.

The upside: skies are often perfectly clear. With almost no moisture in the air, you get razor-sharp views of Annapurna South, Hiunchuli, and Machhapuchhre. Trekker numbers are at their lowest. On a January trek, you might be one of three or four groups at base camp.

You need a -20 degree Celsius sleeping bag, a 4-season down jacket, insulated boots, and microspikes or light crampons for icy sections above Deurali. This is not a beginner month.

Rainfall: Under 15mm. Chance of clear views: Very high. Teahouse status: Some closed above MBC.

#February

February is similar to January but with slightly warmer afternoons as the days lengthen. Temperatures at ABC range from -12 at night to 2 degrees Celsius during the day by late February. Snow lingers on the trail, though the lower sections (Nayapul to Chhomrong) are mostly dry.

The last two weeks of February see a slow increase in trekker numbers as the spring season approaches. This is the sweet spot for anyone who wants winter solitude but finds January too extreme. Some teahouse owners start reopening above MBC by mid-February.

Rainfall: Around 25mm. Chance of clear views: High. Trail note: Snow on trail above 3,000m, possible ice.

#March

March marks the start of spring trekking season. The first half of the month still carries winter's chill at altitude, with nighttime temperatures at ABC around -10 degrees Celsius. By late March, days warm to 5 to 8 degrees.

The real draw is what happens below 3,000m. Rhododendron forests between Ghorepani and Chhomrong begin blooming in mid-March. The trail passes through tunnels of red and pink flowers, and the forests buzz with birdlife.

Visibility is good but not as clean as October. Spring haze builds through the month as temperatures rise. Early March gives better mountain views than late March. Crowds are moderate, heavier than winter but well short of peak October numbers.

Early March can still have snow on the trail above Deurali. By late March the route is mostly clear. This is a good month for first-time trekkers who want decent weather and the rhododendron bonus.

Rainfall: Around 35mm. Rhododendrons: Starting to bloom below 3,000m. Crowds: Moderate, building through the month.

#April

April is peak spring season and the second-busiest month on the ABC trail after October. Daytime temperatures at base camp range from 5 to 10 degrees Celsius. Nights are cold but manageable at -5 to -8 degrees.

The rhododendron bloom hits its peak in April. The forests between Ghorepani and Upper Sinuwa are at their most photogenic. Above 3,500m the landscape is brown and dry, but the lower trail sections look like someone planted a botanical garden on a mountainside.

Late April brings early pre-monsoon buildup. Afternoons get hazy, and occasional showers hit the lower elevations. Morning views are still reliable. Most trekkers leave camp by sunrise for the clearest conditions.

All teahouses are open. Trails are dry and in good condition. April is the best spring month for beginners because the temperature is comfortable, the trail is clear of snow, and teahouse availability is high.

Does it rain at Annapurna Base Camp in April? Occasionally. The lower sections around Chhomrong and Bamboo get light afternoon showers by late April, but ABC itself stays mostly dry. You should still carry a rain jacket.

Rainfall: Around 60mm (mostly lower elevations). Rhododendrons: Peak bloom. Crowds: Heavy, second only to October.

#May

May is the last month before the monsoon. The first week still gets decent weather, but by mid-May the pre-monsoon pattern is established: clear mornings, cloudy afternoons, evening showers. Temperatures at ABC are relatively comfortable (2 to 10 degrees Celsius during the day, -3 at night).

Is May too late for Annapurna Base Camp? Not if you go in the first two weeks. After May 15th, rain frequency increases and mountain views become unreliable. The lower trail gets muddy. Leeches appear below 2,500m.

Crowds thin out rapidly as the month progresses. By late May, you will meet very few trekkers. This makes it a viable option for experienced hikers who want a quieter trail and are comfortable with unpredictable weather.

Rainfall: Around 150mm. Leeches: Starting to appear below 2,500m. Trail note: Increasingly muddy in lower sections.

#June

June brings the monsoon to the Annapurna region. Heavy rain falls nearly every day, with monthly totals around 350mm. Clouds sit low, and you may go days without seeing the mountains. Trails are wet, and river crossings swell.

Leeches are active throughout the lower trail (Nayapul to Bamboo). You will encounter them on every section below 3,000m. Leech socks and salt are standard gear.

Is Annapurna Base Camp open in June? Technically yes. The trail does not close. But most teahouses above Deurali shut down because there are no trekkers. The ones that stay open run skeleton crews. Landslide risk increases on the trail between Bamboo and Deurali, where the path cuts across steep, loose hillsides.

June is not recommended for the ABC trek. If you must trek during monsoon, Upper Mustang and Dolpo sit in the rain shadow and stay relatively dry.

Rainfall: Around 350mm. Leeches: Very active. Teahouse status: Most closed above Deurali.

#July

July is the wettest month in the Annapurna region. Rainfall at mid-elevations can exceed 550mm. The trail is waterlogged. Landslides and trail washouts are real risks, especially on the steep section between Bamboo and Machhapuchhre Base Camp.

Mountain views are rare. You might catch a brief clearing at dawn, but consistent views are not realistic.

Can you trek Annapurna Base Camp in monsoon? You can, physically. People do it. But the combination of zero visibility, leech activity at all elevations below 3,000m, closed teahouses, slippery trails, and landslide risk makes it difficult to recommend. This applies equally to August.

Rainfall: Around 550mm. Trail risk: Landslides, washouts. Trekker numbers: Near zero.

#August

August mirrors July. Rainfall is slightly lower (around 500mm) but the trail conditions are the same: wet, leech-heavy, and prone to disruption. Cloud cover is persistent. Late August sees the very first signs of the monsoon weakening, but conditions do not meaningfully improve until mid-September.

One note for photographers: the brief post-rain clearings in late August sometimes produce the most dramatic cloud formations of the year. But you would need to camp at ABC for several days to catch them, and the logistics make this impractical for most trekkers.

Rainfall: Around 500mm. Conditions: Same as July. Recommendation: Avoid.

#September

September is a transition month. The monsoon weakens through the month, and by late September the rain tapers to occasional afternoon showers. The first two weeks are still wet, with active leeches and muddy trails. The last week of September often delivers the first genuinely clear days since May.

Is it safe to trek Annapurna in September? The second half of the month is reasonable. Trails are wet but passable. Teahouses start reopening above Deurali. The air has been washed clean by months of rain, so when the clouds do part, visibility is outstanding.

This is a shoulder season month. Crowds are almost nonexistent, costs are lower, and you get the drama of the monsoon's retreat. It suits experienced trekkers comfortable with uncertainty.

Rainfall: Around 350mm (front-loaded in first two weeks). Leeches: Active through mid-September. Views: Improving through the month.

#October

October is the best month to trek to Annapurna Base Camp. Every metric points the same direction.

The monsoon has ended. Skies are clean and dry. Visibility reaches its annual maximum. Daytime temperatures at ABC sit between 5 and 8 degrees Celsius, cold but comfortable for trekking. Nights drop to -5 to -10 degrees, manageable with a good sleeping bag.

The trail is dry and in peak condition. Every teahouse is open and fully staffed. The Annapurna Conservation Area issues more ACAP permits in October than any other month.

The tradeoff is crowds. October is the busiest month on the ABC trail. Teahouses between Deurali and ABC can fill up, and popular stops like Chhomrong and Bamboo get crowded by afternoon. Book your guide and permits at least a month in advance. Starting the day early (before 6:00 AM) puts you ahead of the main pack.

Dashain, Nepal's biggest festival, falls in October. During the festival week, some local staff take leave, and domestic flights can be crowded. This rarely affects the trekking experience, but it is worth knowing for logistics.

Why is October best for Annapurna trek? The monsoon has scrubbed the atmosphere clean, temperatures sit in a comfortable range for walking, and the trail is bone dry. No other month gives you all of that at once.

Rainfall: Around 50mm. Visibility: Best of the year. Crowds: Highest of the year. Teahouse status: All open.

#November

November is the second-best month for the ABC trek. Early November carries over October's clear skies and dry trails. Temperatures drop as the month progresses: daytime at ABC ranges from 0 to 5 degrees Celsius, with nights hitting -10 to -15 degrees by late November.

Is November too cold for Annapurna Base Camp? Not in the first three weeks. The cold is noticeable but manageable with layered clothing and a -15 degree sleeping bag. Late November edges into winter territory, and the first snowfall of the season sometimes arrives in the last week.

Crowds thin steadily after the first week of November. If you want October-quality views with fewer people on the trail, the first two weeks of November are the play. Teahouse prices stay at peak-season rates through mid-November, then start dropping.

The drawback is shorter days. Sunset comes around 5:15 PM in November versus 5:45 PM in October. You lose about 30 minutes of afternoon trekking light.

Rainfall: Around 10mm. Temperature trend: Dropping through the month. Crowds: Moderate, thinning.

#December

December is a legitimate trekking month for prepared hikers. The weather is cold and dry. Daytime temperatures at ABC range from -5 to 0 degrees Celsius. Nights can drop to -20 degrees or lower.

Skies are frequently clear. The cold, dry air produces excellent visibility. Snow is likely on the trail above 3,000m, especially in the second half of the month.

How cold is Annapurna Base Camp in December? Cold enough that you need expedition-grade gear. A -20 degree sleeping bag, insulated down jacket, thermal base layers, warm gloves, and insulated trekking boots are non-negotiable. The teahouses that remain open have no heating beyond a communal dining room stove.

Some teahouses between MBC and ABC close in December. Confirm availability through your guide or agency before departing. The lower trail (Nayapul to Chhomrong) stays open and walkable.

December trekkers get the quietest trail of the year outside monsoon. You will likely have ABC to yourself. For experienced trekkers, the solitude and the sharp, cold-air visibility make December worth the discomfort.

Rainfall: Around 10mm. Snow: Likely above 3,000m. Crowds: Very few. Gear requirement: Full winter kit.

#Spring vs autumn: how they actually compare

This is the question that fills trekking forums. Both seasons work. They offer different experiences.

Should you trek Annapurna in spring or autumn? Autumn wins on pure mountain views and trail conditions. Spring wins if you care about flowers and want slightly fewer trekkers than peak October.

One practical note: spring weather deteriorates as you get deeper into the season (April is better than May), while autumn weather is best at the start (October is better than November). If you are choosing between late April and early November, November gives more reliable views.

#Weather at ABC: temperature, rain, and snow

Annapurna Base Camp sits at 4,130m in a glacial basin surrounded by Annapurna I (8,091m), Annapurna South (7,219m), Hiunchuli (6,441m), and Machhapuchhre (6,993m). The amphitheater shape traps cold air at night and can create localized weather patterns.

#Temperature by month and elevation

Temperatures vary significantly along the trail. The table below gives approximate ranges at four key stops.

All temperatures in degrees Celsius. These are approximate ranges based on regional data. Actual conditions vary with weather systems, cloud cover, and wind.

#Monthly rainfall

#Snow conditions

Snow at Annapurna Base Camp is possible from November through March. The heaviest snowfall typically occurs in January and February, when the trail above Deurali can accumulate 30 to 60cm. Snow depth at ABC itself can reach 1 meter or more in a heavy winter.

Can you reach Annapurna Base Camp in snow? Yes, with appropriate gear. Microspikes or light crampons, gaiters, waterproof boots, and trekking poles are standard for winter attempts. Your guide will assess trail conditions daily and may adjust the route or pace based on snowpack.

By late March, most snow has melted from the main trail. Residual patches persist in shaded sections above 3,500m into early April.

#Crowd levels and teahouse availability

The ABC trek is one of Nepal's most popular routes. Crowd levels vary dramatically by season.

Teahouse availability at ABC. The base camp has roughly a dozen teahouses. During peak October, they can all fill up by mid-afternoon. Trekkers who arrive after 2:00 PM sometimes need to share rooms or bunk in dining halls. Starting each day early is the simplest way to secure a bed.

In winter (December through February), only 2 to 4 teahouses at ABC stay open. The same pattern holds at Machhapuchhre Base Camp. Call ahead or have your guide confirm before you set out from Chhomrong.

The quietest time to trek Annapurna Base Camp is December through February and late September. You trade crowd-free trails for either cold (winter) or rain (September). For many trekkers, the tradeoff is worth it.

#Rhododendron season and natural highlights

The Annapurna region holds the densest rhododendron forests in Nepal. The trail between Ghorepani and Upper Sinuwa passes through stands of tree rhododendrons that reach 10 to 15 meters tall.

When do rhododendrons bloom in Nepal? The bloom depends on elevation and species. On the ABC trail:

The peak bloom window for the most photogenic section (Ghorepani to Chhomrong, 2,000 to 2,800m) is the last week of March through the second week of April.

Beyond rhododendrons, spring brings wildflowers to the lower meadows: primula, orchids, and wild iris. Birdlife peaks in March and April, with species including the Himalayan monal (Nepal's national bird), blood pheasant, and various laughingthrushes.

Leech season runs from late May through mid-September. Leeches are most active in warm, wet conditions below 3,000m. They are virtually absent above 3,500m in all months. Prevention: tuck pants into socks, use leech socks (available in Pokhara for 200 to 300 NPR), and check your boots at every rest stop. Salt or a lighter removes attached leeches. They are harmless but unpleasant.

#Best month for photography

October delivers the best conditions for mountain photography at Annapurna Base Camp. Post-monsoon clarity means you can see individual rock features on Annapurna South from base camp. The light is warm and directional. Sunrise paints the south face of Annapurna I in gold.

Sunrise at ABC happens around 6:00 to 6:15 AM in October. The golden hour window lasts roughly 45 minutes. The amphitheater faces southeast, so the early light hits the peaks on the western wall (Annapurna I, Annapurna III) first, then sweeps across to Machhapuchhre. Set up at the eastern edge of camp for the widest panorama.

Late March and April are the best months for forest and flower photography. The rhododendron canopy combined with filtered light creates strong depth-of-field opportunities. Morning mist through the forest adds atmosphere.

November gives excellent peak photography with softer, lower-angle light than October. The tradeoff is shorter days (usable light ends around 4:45 PM).

December through February produce the sharpest mountain views of the year, but sunrise photography requires standing outside in -15 degree cold before dawn. What you get for that suffering is deep blue skies, snow-covered peaks, and air so clean the mountains look closer than they are.

Machhapuchhre (Fishtail) sunrise photography is best from October through December, when the sun clears the eastern ridgeline at an angle that lights the distinctive twin summit.

#Safety by season: avalanche, leeches, and altitude

#Avalanche and landslide risk

The section between Deurali and Machhapuchhre Base Camp crosses an avalanche-prone zone below the south face of Hiunchuli. The greatest risk is in the spring snowmelt period (March to April) and during or immediately after heavy winter snowfall (January to February). The trail passes through Hinku Cave, a large rock overhang where trekkers historically shelter during avalanche conditions.

Landslide risk peaks during the monsoon (June to September), particularly on the trail between Bamboo and Deurali, where the path traverses steep, rain-saturated hillsides.

Outside these windows, avalanche and landslide risk is low. October and November are the safest months for trail stability.

#Altitude sickness at ABC

Annapurna Base Camp sits at 4,130m. Most trekkers acclimatize through the gradual ascent profile of the standard itinerary, which spreads the altitude gain across 7 to 10 days from Nayapul (1,070m). AMS (acute mountain sickness) can affect anyone regardless of fitness.

The season does not change your AMS risk directly, but winter conditions add compounding stress: dehydration from cold, reduced appetite, and physical exertion from walking on snow. Proper hydration and a rest day at Deurali or MBC reduce the risk.

Acclimatization at Annapurna Base Camp typically involves spending a night at Machhapuchhre Base Camp (3,700m) before pushing to ABC. Do not skip this stop.

#Leech risk by season

Leeches are absent above 3,500m in all seasons.

#Cost differences by season

The Annapurna Base Camp trek costs less in the off-season. Here is how pricing shifts across the year.

All prices are approximate and vary by agency. ACAP permit ($30 USD) and TIMS card ($20 USD) costs are fixed year-round.

When is the cheapest time to trek Annapurna Base Camp? December through February and June through September offer the lowest guide and accommodation rates. The savings are real (15 to 30 percent below peak), but you trade weather reliability and comfort for them. For budget trekkers, March and September offer a middle ground: reasonable costs with acceptable weather.

Mountain Hawk Trek runs the Annapurna Base Camp Trek at $1,275 for a 16-day guided package, including permits, guide, porter, meals, and accommodation.

#What to pack by season

Your packing list changes significantly depending on when you trek. The core gear stays the same, but insulation and rain protection vary.

For a complete gear list, see our Annapurna Base Camp trek complete guide.

#When to book your trek

How far in advance should you book the Annapurna Base Camp trek? It depends on the season.

October: Book 4 to 8 weeks ahead. Peak demand means popular guides and agencies fill their rosters early. Last-minute booking in Pokhara is possible but you may end up with a less experienced guide.

November and March to April: Book 2 to 4 weeks ahead. More availability than October, but weekends and Nepali holiday periods (Dashain in October, Tihar in November) can create short-term crunches.

December to February: Book 1 to 2 weeks ahead. Off-season flexibility means you can often arrange a trek on short notice from Pokhara. Confirm teahouse openings above MBC before departure.

May and September: Walk-in booking in Pokhara works fine. Few trekkers compete for guides and permits.

June to August: Not recommended for ABC. If you are in Nepal during monsoon and want to trek, look into Upper Mustang or Dolpo, which sit in the rain shadow.

Permits (ACAP and TIMS) are issued same-day at the permit counter in Pokhara. No advance application needed. Your guide handles the paperwork.

#How ABC compares to other Annapurna region treks

The Annapurna region has several popular treks. They share similar seasonal patterns, but there are differences worth knowing.

Annapurna Circuit vs Base Camp best time: Both share the same peak months (October, November). The key difference is that the Circuit crosses Thorong La Pass at 5,416m, which can receive heavy snow in winter and early spring. The ABC trek stays below 4,200m and is more accessible in shoulder months. If you are deciding between the two for a March trek, ABC is the safer bet.

ABC vs EBC best month: Both work best in October and November. The Everest region sits slightly higher and colder, and the Lukla flight adds a weather-dependent variable. If flight cancellations concern you, ABC (road access from Pokhara) is more predictable for logistics.

ABC vs Poon Hill best time: Identical seasonal windows. Poon Hill is a subset of the same trail, so weather conditions match. If you have only 4 to 5 days, the Poon Hill trek gives you sunrise views and rhododendron forests without the altitude commitment.

ABC vs Mardi Himal best time: Same peak months. Mardi Himal reaches 4,500m (higher than ABC) and has a steeper ascent profile. Both are excellent spring and autumn treks. The Mardi Himal trek is shorter (5 to 7 days) and sees fewer trekkers at all times of year.

#Frequently asked questions

Is October good for Annapurna Base Camp trek?

October is the single best month. Post-monsoon skies are the clearest of the year, temperatures are moderate, and trails are dry. The only downside is crowds. Expect full teahouses and a busy trail, especially between Chhomrong and ABC.

Can I trek Annapurna Base Camp in winter?

Yes. December through February are viable for experienced trekkers with winter gear. Skies are clear and trails are empty. You need a -20 degree sleeping bag, insulated boots, and microspikes. Some teahouses above Machhapuchhre Base Camp close in winter, so confirm availability through your guide.

How cold is Annapurna Base Camp at night?

It depends on the month. October nights: -5 to -10 degrees Celsius. December to January nights: -15 to -20 degrees. April nights: -5 to -8 degrees. Teahouse rooms are unheated. Your sleeping bag is your primary warmth.

What month has the best views at Annapurna Base Camp?

October and November, followed by December through February. The post-monsoon and winter months have the driest air and least cloud cover. You can see the full 360-degree amphitheater (Annapurna I, Annapurna South, Hiunchuli, Machhapuchhre, Gangapurna) on nearly every morning in October.

Is it safe to trek Annapurna in September?

The second half of September is reasonable. The monsoon is retreating, rain decreases, and teahouses reopen. Trails are wet and leeches are still active through mid-month. It is not a peak recommendation, but experienced trekkers do it.

Is spring or autumn better for ABC trek?

Autumn (October to November) wins on views and trail conditions. Spring (March to April) wins on flowers and slightly lower crowds in March. If mountain views are your priority, pick autumn. If blooming rhododendron forests matter to you, pick spring.

Do I need crampons for ABC trek?

In October and November, no. In December through March, microspikes or light crampons are recommended for icy sections above Deurali (3,230m). Full mountaineering crampons are not needed on the standard trail.

When do rhododendrons bloom on the ABC trek?

The main bloom runs from mid-March through mid-April at elevations between 2,000 and 3,000m. The most photogenic section is between Ghorepani and Chhomrong. Peak bloom is typically the last week of March through the first week of April.

Are there leeches on the Annapurna Base Camp trek?

Leeches are active from late May through mid-September below 3,000m. They are completely absent from October through March. Leech socks (available cheaply in Pokhara) and salt are effective prevention. Above 3,500m, leeches are not a concern in any season.

How crowded is ABC in October?

Very crowded. October sees the highest trekker numbers of the year. Teahouses fill by early afternoon, and popular stops like Chhomrong, Bamboo, Deurali, and ABC itself can feel busy. Starting each day early and choosing less common lunch stops helps. The first two weeks of November offer nearly the same weather with noticeably fewer people.

How far in advance should I book ABC trek?

For October: 4 to 8 weeks. For November and March to April: 2 to 4 weeks. For off-season (December to February): 1 to 2 weeks. For monsoon: not recommended. Permits (ACAP and TIMS) are issued same-day in Pokhara and do not require advance booking.

Is Annapurna Base Camp open year round?

The trail itself does not close. You can physically access ABC in any month. What changes is teahouse availability (some close in monsoon and deep winter), trail conditions (snow in winter, mud and leeches in monsoon), and weather reliability. The practical trekking season runs from late September through May, with October and November being the peak window.

Planning your Annapurna Base Camp trek? Read our complete ABC guide for the full trail breakdown, or check what it costs to budget your trip. If you are comparing routes, our ABC difficulty guide covers fitness requirements and altitude challenges.