Langtang Valley weather by month

Syabrubesi (1,460 m)

Month	Avg high	Avg low
January	+13 °C	+3 °C
February	+14 °C	+4 °C
March	+17 °C	+7 °C
April	+21 °C	+9 °C
May	+22 °C	+14 °C
June	+24 °C	+18 °C
July	+24 °C	+20 °C
August	+24 °C	+20 °C
September	+23 °C	+18 °C
October	+21 °C	+13 °C
November	+18 °C	+8 °C
December	+15 °C	+6 °C

Langtang village (3,430 m)

Month	Avg high	Avg low
January	+2 °C	−7 °C
February	+2 °C	−7 °C
March	+5 °C	−4 °C
April	+9 °C	−2 °C
May	+11 °C	+3 °C
June	+14 °C	+8 °C
July	+15 °C	+10 °C
August	+15 °C	+10 °C
September	+13 °C	+8 °C
October	+10 °C	+2 °C
November	+7 °C	−2 °C
December	+4 °C	−4 °C

Kyanjin Gompa (3,870 m)

Month	Avg high	Avg low
January	−1 °C	−9 °C
February	0 °C	−9 °C
March	+3 °C	−7 °C
April	+6 °C	−4 °C
May	+9 °C	+1 °C
June	+12 °C	+6 °C
July	+13 °C	+9 °C
August	+13 °C	+8 °C
September	+11 °C	+7 °C
October	+8 °C	+1 °C
November	+5 °C	−3 °C
December	+2 °C	−6 °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 village’s elevation. The valley rises from warm forest at Syabrubesi to cold, open yak pastures at Kyanjin Gompa, so pack for both.

The seasons

Spring (March to May): rhododendrons in the lower forest and warming days. Cloud builds in the afternoons towards May.
Monsoon (June to September): rain, leeches in the forest and risk of landslides on the road from Kathmandu.
Autumn (October to November): the clearest skies of the year and the best views of Langtang Lirung.
Winter (December to February): cold and quiet, with snow possible at Kyanjin Gompa.