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Turquoise Tilicho Lake ringed by bare slopes and snow peaks

Circuit + Tilicho guide

Annapurna Circuit with Tilicho Lake weather by month

Month-by-month average day and night temperatures from Besisahar to Tilicho Lake and Muktinath, and the best months to cross Thorong La.

Besisahar (760 m)

MonthAvg highAvg low
January+17 °C+9 °C
February+19 °C+11 °C
March+23 °C+12 °C
April+26 °C+15 °C
May+26 °C+19 °C
June+27 °C+22 °C
July+27 °C+23 °C
August+27 °C+23 °C
September+26 °C+22 °C
October+25 °C+18 °C
November+21 °C+14 °C
December+18 °C+11 °C

Manang (3,540 m)

MonthAvg highAvg low
January+2 °C−6 °C
February+3 °C−5 °C
March+5 °C−3 °C
April+10 °C+1 °C
May+12 °C+5 °C
June+17 °C+10 °C
July+18 °C+13 °C
August+18 °C+13 °C
September+16 °C+10 °C
October+12 °C+4 °C
November+9 °C0 °C
December+5 °C−3 °C

Tilicho Lake (4,919 m)

MonthAvg highAvg low
January−7 °C−16 °C
February−6 °C−15 °C
March−4 °C−14 °C
April0 °C−10 °C
May+3 °C−5 °C
June+7 °C+1 °C
July+8 °C+4 °C
August+8 °C+3 °C
September+6 °C+1 °C
October+2 °C−5 °C
November−1 °C−9 °C
December−4 °C−12 °C

Thorong Phedi (4,450 m)

MonthAvg highAvg low
January−6 °C−16 °C
February−5 °C−15 °C
March−3 °C−13 °C
April+2 °C−9 °C
May+5 °C−4 °C
June+9 °C+2 °C
July+11 °C+5 °C
August+10 °C+5 °C
September+8 °C+2 °C
October+4 °C−4 °C
November+1 °C−9 °C
December−3 °C−13 °C

Muktinath (3,760 m)

MonthAvg highAvg low
January−1 °C−12 °C
February0 °C−12 °C
March+2 °C−10 °C
April+6 °C−5 °C
May+10 °C0 °C
June+14 °C+6 °C
July+14 °C+8 °C
August+14 °C+8 °C
September+12 °C+5 °C
October+9 °C−1 °C
November+6 °C−5 °C
December+2 °C−9 °C

Modelled 10-year averages (ERA5 / ERA5-Land via Open-Meteo), checked against the Pyramid research station in the Khumbu, 2016-2025 (within about 1–2 °C of the station's measurements). Temperatures only: the model's rainfall is too coarse to trust in rain-shadow valleys such as Manang, so we leave it out. Mountain valleys and ridges vary more than these grid-model averages show.

How to read these numbers

The tables show 10-year averages from a weather model, adjusted for each place’s elevation. This route climbs from subtropical valleys below 1,000 m to Tilicho Lake at 4,919 m and Thorong La at 5,416 m, so you’ll meet every season in one trek. Nights at Tilicho Lake and Thorong Phedi are well below freezing for most of the year.

The seasons

  • Spring (March to May): a good window for both Tilicho and Thorong La, though early spring can still bring snow up high.
  • Monsoon (June to September): the lower valley is wet and landslides can block the road. Manang and beyond lie in a rain shadow and stay drier.
  • Autumn (October to November): the most reliable season, with clear skies for the lake and the pass.
  • Winter (December to February): snow can close the Tilicho trail and Thorong La. Not a season we’d plan this route for.