Choosing the best season for Annapurna Circuit trek can significantly enhance your experience. Each season brings its own unique charm from crystal-clear mountain views in autumn to vibrant rhododendron blooms in spring. Understanding when to go not only affects the scenery and weather but also determines the difficulty level, availability of accommodations, and overall trekking safety.
Whether you’re seeking solitude on snow-dusted trails or festive vibes during the peak season, timing your adventure with insight into the circuit’s weather patterns is key to a successful journey.
Understanding the weather and seasonal changes of the Annapurna Circuit is essential for planning a safe, scenic, and enjoyable trek. Below is a comprehensive breakdown of temperature, altitude, climate conditions, and tips to prepare for the Annapurna Circuit Trek.
How High Does the Annapurna Circuit Go?
The Annapurna Circuit reaches its highest altitude at Thorong La Pass, which towers at 5,416 meters (17,769 feet) above sea level. This iconic mountain pass is not only the pinnacle of elevation on the trek but also the most physically and mentally demanding section. Due to its high altitude, trekkers often start the ascent well before sunrise to avoid strong afternoon winds and ensure a safer crossing. Snow accumulation can make the pass dangerous or even impassable during the winter months, adding to the challenge.
Acclimatization is essential for safely reaching Thorong La. Most itineraries build in rest days at moderate altitudes, such as Manang (3,519 meters), to help the body adapt to the decreasing oxygen levels. Trekkers who ascend too quickly risk acute mountain sickness (AMS), which can be serious at this height.
Altitude Profile of Annapurna Circuit Trek
How Cold Is the Annapurna Circuit?
Temperatures on the Annapurna Circuit vary significantly with altitude and season. Here’s a detailed breakdown:
- High Altitudes (Above 4,000 meters):
- Winter (Dec–Feb): Temperatures can plunge to -10°C to -20°C (14°F to -4°F), especially at Thorong La Pass and nearby areas.
- Spring/Autumn (Mar–May, Sept–Nov): Highs may hover around -5°C to -10°C (23°F to 14°F). Even with clear skies, nights are bitterly cold.
- Mid-range Elevations (2,500m–4,000m):
- Daytime temperatures range between 5°C to 15°C (41°F to 59°F).
- Nights can drop close to freezing, especially in the spring and autumn.
- Lower Elevations (1,000m–2,500m):
- The start and end of the circuit are generally warmer, with temperatures between 10°C to 25°C (50°F to 77°F).
- These areas often have a more tropical feel, especially during the monsoon season.
Layered clothing is crucial to adapt to the temperature fluctuations. High-quality insulated jackets, thermal layers, and waterproof gear are essential, particularly at higher altitudes.
When Can I Hike the Annapurna Circuit?
The Annapurna Circuit is technically hikeable year-round, but each season presents unique conditions:
Annapurna Circuit: Spring – March through May
This is the most popular time of the year for trekking in Nepal because of the clear weather and sunny days. Mornings and evenings will be cold when you are at higher altitudes but overall temperatures will range from 7 to 24oC, with an average of 15. There is no rain during this time and skies will be mostly clear.
The vegetation is in full bloom at this time of year. Nepal’s national flower, the rhododendron is found at lower altitudes and is particularly beautiful. Other wildflowers provide an array of colours and the pine forests at lower altitudes will be fresh and fragrant.
Annapurna Circuit: Monsoon – June through August
There is something wonderful that we love about monsoon! Vegetation is washed clean, and the snow-capped mountains are stunning in the mornings after a night of rain.
There will be times when the mountains will disappear behind rain clouds, but that just makes it all the more special when they do appear!
Teahouses remain open during this time, and with less trekkers around, accommodation is not a problem. You might even be able to get a cheaper rate than that advertised.
Temperatures are not so different from those of the springtime, being perhaps a bit less cold at the higher points of this trek. Expect temperatures around 9 to 24oC, with drops when it rains.
While there is rain at the lower altitudes, particularly on the Marpha to Pokhara part of this trek, the northern areas, including Manang, are in the rain shadow so see little rainfall. A good pair of walking shoes or trekking boots and trekking poles (sticks) will help you negotiate any slippery parts of the trail.
The disadvantages of trekking in the monsoon are the leeches (they do not pass disease but can cause infection if you scratch the bite site) and the fact the trails will be more slippery.
The main advantage of trekking in the monsoon is the fact you will not see many other trekkers. And we think that offsets those horrible little leeches! (Carry salt to remove them.) And drinking hot tea inside your teahouse watching the rain falling outside can be just as magical an experience as gazing at the mountains.
Annapurna Circuit: Autumn – October through November
This is another very popular time to go trekking in the Annapurnas. As a result, the trails will be busier. So again, off-set the weather and beauty of the surroundings with the fact the there will be more trekkers around and accommodations are at a premium. Temperatures are similar to spring, getting cooler as the season gets later. But expect in the region of 10 to 24oC, with an average of 15.
Also, bear in mind this is the main festival season in Nepal – sort of like the Western Christmas and New Year. So if you are planning to travel with a porter and/or guide, please make sure to book them in advance.
With peak trekking season and festival season falling at the same time, trekking staff is stretched to the limit! There are only 2 or 3 days however when things will be affected – such as less road transport during the main festival days. Please bear this in mind when planning your trek. On the other hand, you can enjoy the festive atmosphere along the way and in Pokhara.
Annapurna Circuit: Winter – December through February
There will be heavy snowfall at higher altitudes and the Thorong La Pass at 5,416m will be particularly hard to cross. If you have experience in trekking in winter, are very well prepared, don’t mind hiking through deep snow and are prepared to be damp some days, you might want to consider winter.
At this time the views will be spectacular (perhaps some cloudy days) and there will be hardly any trekkers on the trails. Temperatures at higher altitudes will be below freezing point at night. Teahouses remain open and with less trekkers on the trail you will have a choice of accommodation!
Read More: Best trekking destination to trek in Winter: January and February
What Kind of Weather Can I Expect on the Annapurna Circuit Trek?
This trek takes in both lower altitude and higher altitude hiking so the days will vary depending on where you are. The start and end of the Annapurna Circuit Trek will be warm and sunny while the midpoint will be colder, and perhaps with snow.
Here is a breakdown of the weather during different seasons to let you prepare.
Spring – March through May
The average temperature will be around 15oC, with it steadily getting warmer towards the end of May. At the lower altitudes expect days to be a warm 18-24o C. At higher altitudes expect the day time temperatures to be 4 to 5 Celcius. Nighttime temperatures may drop below freezing. There is no rain during this time and the skies will be clear.
Monsoon – June through August
Temperatures are not so different from those of the springtime, being perhaps a bit less cold at the higher points of this trek. Expect temperatures around 9 to 24oC, with drops when it rains.
Rivulets become streams and streams turn in to rivers, adding to the beauty of the trail. Vegetation is greener at the lower altitudes – fields come alive and forests are washed clean.
As parts of the Annapurna Circuit Trek lies in the rain shadow, despite it being monsoon at lower altitudes, the northern part of this trek sees less rain.
Rain will likely come into play on the Mustang side of the Thorong La Pass heading towards Pokhara. Landslides and muddy trails may be encountered. But this is balanced by the fact you will encounter fewer trekkers!
Autumn – October through November
Temperatures are similar to spring, getting cooler as the season gets later. But expect in the region of 10 to 24oC – temperate and comfortable at the lower altitudes. At higher altitudes chances of snowfall are low and the skies will also be sunny. This is also another very popular trekking season in Nepal.
Winter – December through February
These are the coldest months on the Annapurna Circuit Trek, with an average of 7-12oC. Temperatures will be below freezing at higher altitudes. The Thorong La Pass may be closed due to snowfall.
This is less likely in early December. There are chances of roads and trails being blocked by snow. So you should have an alternative plan and/or add in extra time in case these situations arise. Some days may be cloudy but on other days the air will be crisp and clear and mountains stunningly white against the blue sky.
We suggest you do not make the Annapurna Circuit in the winter your first ever trek! Higher altitude winter treks are possible for the more experienced trekkers but not advisable for those with no or little experience.
Best Time to Hike for Greenery and Flowers
If you’re looking to experience the Annapurna Circuit at its most vibrant, spring (March to May) is the best season for greenery and floral beauty. During this time, the lower and mid-elevations are covered in fresh vegetation, while the famous rhododendron forests explode in color, painting the hillsides in shades of red, pink, and white. Various wildflowers bloom alongside the trails, and the landscape is lush from the recent snowmelt.
This season not only enhances the scenic appeal but also offers a chance to witness Himalayan flora in full bloom. The temperatures are mild and the air is fresh, providing a comfortable hiking experience. Clear skies are common, and the visibility of surrounding peaks like Annapurna II, Gangapurna, and Machhapuchhre is often excellent.
Spring is ideal for nature lovers, photographers, and anyone looking to enjoy Nepal’s mountain beauty at its most colorful and life-filled.
- Autumn (September to November):
- Best season to trek. Expect clear skies, mild daytime temperatures, and dry trails.
- The mountains offer spectacular views, and the weather is most stable.
- Can be busy with other trekkers due to its popularity.
- Spring (March to May):
- Best season for greenery and flowers. Known for vibrant rhododendron blooms, lush hillsides, and a rich variety of wildflowers and blossoming trees.
- Longer daylight hours, mild to warm temperatures, and fresh mountain air create ideal trekking conditions.
- Perfect for botany enthusiasts, nature lovers, and photographers aiming to capture colorful flora and dramatic landscapes.
- Daytime temperatures are generally pleasant, ranging from 10°C to 20°C (50°F to 68°F) at lower to mid-elevations, though nights at higher altitudes still remain cold.
- Snowmelt from winter may make some trails muddy and slippery, especially around shaded and forested sections.
- Fewer trekkers than autumn, making for a more peaceful trekking experience.
- Winter (December to February):
- Cheapest time to hike the circuit. With fewer tourists, lodges and teahouses often offer discounts, and flight and transport costs are lower.
- Trekkers benefit from quiet trails and uninterrupted views on clear days.
- However, it is challenging due to extreme cold, snow-covered trails, and the potential closure of Thorong La Pass.
- Proper gear and experience in cold-weather trekking are crucial for safety.
- Monsoon (June to August):
- Least recommended season. Heavy rain leads to landslides, leeches, and slippery trails.
- Cloud cover often obscures mountain views.
- However, the rain shadow region of Manang receives less precipitation, making it marginally better than other parts.
Planning your trek according to the season is essential for safety and enjoyment. Always check the latest weather and trail conditions before embarking on the journey.
Best Time to Hike the Circuit
For budget-conscious trekkers, winter (December to February) is the most affordable time to hike the Annapurna Circuit. During this off-peak season, the number of trekkers drops significantly, leading many teahouses and lodges to reduce their rates. Additionally, domestic flights and transportation services often lower their prices due to decreased demand.
Aside from cost savings, trekkers benefit from peaceful trails, less crowded accommodations, and stunning views when the skies are clear. Snow-capped peaks are at their most photogenic, and the serene mountain atmosphere enhances the experience for solitude seekers.
However, winter trekking comes with challenges: temperatures can be extremely low, especially above 3,000 meters, and Thorong La Pass may be closed due to snow. Proper cold-weather gear, flexible planning, and experience with winter trekking are essential to tackle this season safely and successfully.
Annapurna Circuit Trek Temperature and Weather
As the trail ascends and descends through a wide range of elevations, weather conditions of Annapurna Circuit vary considerably. Here’s a general summary of what to expect:
- Daytime temperatures on lower trails (1,000m–2,500m): Around 15°C–25°C (59°F–77°F) in spring and autumn.
- High-altitude passes like Thorong La (5,416m): Temperatures can drop to -10°C (14°F) or even lower in winter and hover around -5°C (23°F) in autumn.
- Nighttime conditions across the circuit: Always significantly colder; it’s essential to carry a sleeping bag rated for -10°C (14°F) or lower for warmth and comfort.
Annapurna Circuit Trek Rain Conditions
- Monsoon Season (June to August): Brings heavy rainfall, particularly in lower elevations like Besisahar.
- Risks: Includes landslides, slippery trails, and reduced visibility, making trekking more dangerous and less enjoyable.
- Alternative Option: Trekking in rain-shadow areas like Upper Mustang can be a viable alternative, as these regions receive significantly less rainfall even during monsoon months.
Annapurna Circuit Trekking Season Summary
- Best months: March–May and September–November offer the most favorable weather and trekking conditions.
- Challenging but possible: December–February, with freezing temperatures and limited access.
- Not recommended: June–August, due to monsoon-related hazards.
Armed with this seasonal overview, you can tailor your trek to align with your comfort preferences, budget, and scenic goals.
Conclusion
The Annapurna Circuit offers a dynamic and rewarding trekking experience that adapts with the changing seasons. Whether you seek the lush beauty of rhododendron forests in spring, the clear skies and panoramic views of autumn, the quiet solitude and savings of winter, or an adventurous alternative during monsoon in rain-shadow regions, there is a season to suit every traveler’s goals.
By understanding how elevation, weather, and timing impact your journey, you can make informed decisions that align with your fitness level, interests, and budget. With thoughtful preparation and seasonal awareness, the Annapurna Circuit promises not only breathtaking landscapes but also a transformative Himalayan adventure.
And if you’re unsure where to start, let Magical Nepal take care of the details. From designing your perfect itinerary to providing experienced, caring guides who understand both the terrain and the culture, we’re here to support your trek every step of the way. Whether it’s helping you cross Thorong La safely or guiding you through blooming rhododendron forests, our team ensures you get the most from your journey, comfortably, confidently, and memorably.