Annapurna Circuit Trek during Autumn

The Annapurna Circuit Trek during autumn is widely considered the best season to attempt the route. 

Stable weather, crisp clear skies, comfortable daytime temperatures, and consistently open teahouses make autumn the most popular and most reliable time of year for the full circuit.

When Is Autumn on the Annapurna Circuit?

Autumn on the Annapurna Circuit generally runs from September through November.

The monsoon clears through September, leaving behind unusually clean air, stable weather, and some of the best mountain visibility of the year through October and into November.

Weather conditions shift from humid and transitional in September to crisp and cold by late November, as the season moves toward winter.

Annapurna Circuit Trek in September

September marks the tail end of the monsoon and the start of the autumn season. Early September can still carry leftover monsoon cloud, humidity, and occasional rain, particularly at lower elevations.

Trails and vegetation are lush and green from the monsoon rains, and leeches may still be present on lower forested sections early in the month. Conditions generally improve as the month progresses, with clearer skies and drier trails becoming more common toward late September.

September is a reasonable option for trekkers wanting to beat the peak-season crowds, provided they're prepared for a chance of residual monsoon weather, especially in the first half of the month.

Annapurna Circuit Trek in October

October is generally regarded as the best month of the year to trek the Annapurna Circuit. Skies are typically clear, humidity is low, and daytime temperatures are comfortable across most elevations.

This clarity makes for some of the best mountain views of the year, with sharp visibility of the surrounding peaks common on most days. Unsurprisingly, October is also the busiest month on the circuit, and popular teahouses can fill up quickly, particularly around Manang and near Thorong La Pass.

Nights grow progressively colder as the month goes on, especially at higher elevations, but daytime walking conditions remain excellent throughout.

Annapurna Circuit Trek in November

November remains a strong month for trekking, particularly in the first half, as much of October's clear, stable weather typically continues. Days are still generally sunny and comfortable at lower and middle elevations.

Nights become noticeably colder as November progresses, with freezing temperatures increasingly common above 3,000 metres. Late November begins to take on some early winter characteristics, including the possibility of snow near Thorong La Pass.

Crowds thin out compared to peak October, making late November an appealing option for trekkers who want good weather with fewer people on the trail.

Annapurna Circuit Weather During Autumn

Autumn weather on the Annapurna Circuit is generally the most stable of the year, though temperatures still vary significantly with elevation and shift as the season progresses from September to November.

Elevation	Typical Daytime Temperature	Typical Nighttime Temperature	Expected Autumn Conditions
800–1,500 m	20°C to 27°C	12°C to 18°C	Warm, humid in September, drying out through October–November
1,500–2,500 m	16°C to 23°C	6°C to 13°C	Mild and stable, excellent trekking conditions
2,500–3,500 m	11°C to 19°C	0°C to 8°C	Cool, dry, clear skies common
3,500–4,500 m	5°C to 13°C	-8°C to 1°C	Cold nights, especially by November
4,500–5,000 m	-1°C to 7°C	-14°C to -4°C	Cold and windy, generally stable and manageable
5,000–5,416 m	-5°C to 3°C	-18°C to -8°C	Cold at the pass, snow risk increasing by late November

These figures are approximate. Actual conditions depend on the specific month, elevation, cloud cover, and local weather patterns.

Temperature at Lower Elevations

Lower sections of the Annapurna Circuit remain warm through September before settling into mild, comfortable conditions for the rest of autumn. Daytime walking is generally pleasant, with September carrying the added factor of lingering monsoon humidity.

Evenings cool down noticeably as the season progresses, and a light insulating layer becomes increasingly useful by November, even at lower elevations.

Weather in Higher Elevations

Conditions above 3,000 metres are generally cool and dry through most of autumn, with October offering some of the most stable high-altitude weather of the year. By late November, freezing nights become the norm, and the region starts to take on a winter character.

Acclimatization remains essential throughout autumn just as in any other season. Trekkers should ascend gradually, stay hydrated, avoid alcohol, and watch for symptoms of altitude sickness above 3,000 metres.

Weather at Thorong La Pass

Thorong La Pass is generally at its most reliably accessible during autumn, particularly through October, when clear and stable conditions are common. Early-morning starts remain standard practice, since wind tends to pick up later in the day.

September crossings can occasionally be affected by leftover monsoon cloud or precipitation, while late November crossings begin to carry a higher chance of snow and cold as winter approaches.

A crossing should always be based on current conditions and a guide's assessment, regardless of how favorable autumn's reputation is.

Advantages of Trekking the Annapurna Circuit in Autumn

Exceptional Mountain Visibility

Autumn, and October in particular, is known for some of the clearest skies and sharpest mountain views of the entire year, with low humidity providing excellent long-distance visibility of Annapurna II, Annapurna III, Annapurna IV, Gangapurna, Tilicho Peak, the Chulu peaks, Dhaulagiri, and surrounding ranges.

Stable Weather

Autumn offers the most consistently stable weather patterns of any season, with lower risk of prolonged rain, cloud, or snow disrupting the trek compared to the monsoon or winter months.

Comfortable Temperatures

Daytime temperatures across most of the route are mild and comfortable during autumn, making for pleasant walking conditions without the intense heat of late spring or the extreme cold of winter.

Fully Open Teahouses

All teahouses along the circuit are typically open and fully staffed during autumn, with full menus, reliable electricity, and the best availability of fresh food and supplies of any season.

Most Reliable Pass Crossings

Thorong La Pass sees its most consistent access during autumn, especially in October, with the lowest seasonal risk of closure due to snow or storms.

Lush, Green Scenery Early in the Season

September in particular offers unusually green and lush landscapes as a result of the recently ended monsoon, offering a different visual character from the drier late-autumn and winter months.

Challenges of the Annapurna Circuit Autumn Trek

Peak-Season Crowds

Autumn, and especially October, is the single busiest season on the Annapurna Circuit. Popular teahouses can fill up early in the day, and trekkers may need to arrive early or book ahead to secure rooms in high-demand villages like Manang.

Leftover Monsoon Conditions in Early September

Early September can still bring humidity, cloud cover, and occasional rain, particularly at lower elevations, along with leeches on some lower forested trail sections.

Cold Nights by Late Autumn

Temperatures drop steadily as autumn progresses, and by November, freezing nights are common above 3,000 metres, requiring warmer gear than earlier in the season.

Increased Trail Traffic on Popular Sections

Heavy foot traffic during peak weeks can create congestion on popular stretches of trail and around key viewpoints, particularly near Thorong La Pass and in the Manang area.

Dehydration and Altitude Sickness

Comfortable temperatures can make it easy to underestimate the ongoing risk of dehydration and altitude sickness at elevation. Trekkers should continue to drink regularly, ascend gradually, and monitor for symptoms above 3,000 metres regardless of how mild the weather feels.

Early Winter Onset in Late November

Late November treks can begin to encounter early winter conditions, including the possibility of snow near Thorong Phedi, High Camp, and the pass itself.

Annapurna Circuit Autumn Packing List

Layered Clothing

Carry moisture-wicking base layers, a warm fleece or insulating mid-layer, a waterproof shell, and breathable trekking clothes for warm lower-elevation days. A warm hat and gloves are necessary for the pass and for high-altitude nights, particularly as the season progresses toward November.

Autumn Trekking Footwear

Sturdy, broken-in trekking boots with good ankle support are recommended for the full circuit, including the climb to Thorong La, where cold temperatures and occasional icy patches are possible, especially late in the season.

Sleeping Equipment

A three-season sleeping bag is generally sufficient for September and October, though a warmer bag is worth considering for a November trek, when nights at altitude turn consistently cold.

Sun and Weather Protection

Carry sunscreen, UV-protective sunglasses, a sun hat, and lip balm, since UV exposure increases with altitude and autumn's clear skies mean strong sun exposure on most days. A light rain layer remains useful, particularly for an early-September trek.

Safety and Navigation Equipment

Carry trekking poles, a headlamp with spare batteries, a first-aid kit, blister treatment, a water purification system, and a power bank. A phone with offline maps can help with navigation but should not replace a guide or local route knowledge.

Do You Need a Guide for the Annapurna Circuit in Autumn?

A licensed trekking guide is required for the Annapurna Circuit under Nepal Tourism Board's TIMS provisions, regardless of season. During autumn, a guide is particularly useful for managing accommodation during the busiest weeks, pacing the trek to avoid crowded bottlenecks, and making informed calls on pass conditions as the season shifts toward winter in late November.

Guides also monitor acclimatization, help identify early signs of altitude sickness, and can adjust the itinerary if weather or trail conditions change unexpectedly.

FAQs

Is the Annapurna Circuit open during autumn?

Yes, the Annapurna Circuit is fully open during autumn, and this season is generally considered the most reliable time of year to complete the full route, including Thorong La Pass.

Is September a good time for the Annapurna Circuit?

September can be a good option for trekkers wanting to beat peak-season crowds, though early September may still carry leftover monsoon humidity and occasional rain. Conditions generally improve as the month progresses.

Is October the best month for the Annapurna Circuit?

October is widely considered the best month of the year for the Annapurna Circuit, thanks to clear skies, stable weather, and excellent mountain visibility. It is also the busiest month, so advance planning for accommodation is strongly recommended.

Can I trek the Annapurna Circuit in November?

Yes, November remains a strong trekking month, particularly in the first half. Late November begins to take on early winter characteristics, including colder nights and a higher chance of snow near the pass.

Are teahouses open during autumn?

Yes, all teahouses along the route are typically open and fully operating during autumn, offering the best food and service availability of any season. However, popular stops can fill up quickly during peak weeks, so early arrival or advance booking is recommended.