Climate Insights for Langtang

The climate in Langtang is hot. The average annual temperature is 27°C and approximately 570mm of precipitation falls per year. August is the wettest month, receiving around 176mm of rainfall. Langtang sits near the equator, so seasonal temperature differences are minimal throughout the year.

Langtang sees moderate temperature variation throughout the year, ranging from 18°C to 38°C. March is the hottest month, with daytime highs reaching 38°C and an average of 31°C. January is the coolest month, with minimum temperatures around 18°C and an average of 25°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 3°C shift in average temperatures.

Langtang is a relatively dry area, receiving approximately 570mm of precipitation annually, which averages out to around 48mm per month. The wettest month is August, averaging 176mm of rainfall. September and July also tend to see above-average precipitation. The driest month is January, with just 0mm. That's 176mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Langtang is mildly breezy, with an average annual wind speed of 13km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 16km/h in winter, 14km/h in spring, 13km/h in summer, 11km/h in autumn.

It is currently spring in Langtang, which began on March 20, 2026. Langtang sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in March at around 38°C, while the coldest stretch bottoms out in January near 18°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Langtang is during January and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 25°C with modest rainfall averaging 0mm per month. By contrast, March can be uncomfortably hot with temperatures reaching 38°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Langtang based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.