The Langtang region consists primarily of the Langtang National Park area. The national park ranges in elevation from 1,000 to 7,234 meters (Langtang Lirung Peak). So, the weather in the Langtang region varies due to the vast difference in height. It depends on the elevation and time of year. So, you may encounter many weather conditions on your Langtang Valley Trek.
Overview of Weather During the Langtang Trek
The weather in the lower regions of the Langtang region is quite stable. It is neither too hot in summer nor too cold in winter. But the weather becomes more unpredictable when you go higher into the Langtang Valley. It is likely to change every hour. The weather during the Langtang Trek is also affected by the season you are trekking in.
Spring Weather in Langtang Region
Spring is the second-best season for trekking in the Langtang region. The days are longer and warmer, with clear blue skies, no dark clouds, and crisp air. Nights, on the other hand, are chilly but not severe. Daytime temperatures in the lower parts average 10°C to 20°C. But, the night and high places are unpredictable. Overall, the weather during the Langtang Trek in spring is mild, with few chances of rain.
March
- Average Temperature Range: -3°C to 7°C
- The weather is fairly comfortable, with temperatures higher than in January and February.
- The excellent visibility allows for breathtaking views of Langtang II and Langtang Lirung.
- Higher elevations become slightly warmer, and snow begins to melt. Nonetheless, it is not too hot and remains cool.
April
- Average Temperature Range: Around 11°C during the day and 1°C at night
- The days become brighter and warmer than in March.
- The weather during the Langtang Trek is pleasant with minimal humidity.
May
- Average Daytime Temperature: 12°C to 20°C
- It is the second-best month for trekking in Langtang.
- Among the spring months, it has the warmest days.
Summer Monsoon Weather in Langtang Region
In Nepal, summer coincides with the monsoon season. It remains from June to August. The temperature decreases when it rains. Otherwise, the days are hot and dry, with temperatures reaching 30°C. 12°C is the average temperature. Towards the end of the monsoon, the surroundings look fresh and lovely.
June
- Average Temperature Range: Around 16°C during the day and 7°C at night
- July receives the least amount of rain of the three months.
- The higher the altitude, the less likely it is to rain.
July
- Average Temperature Range: 19°C to 25°C
- It’s the height of monsoon season. Yet, it does not rain all day every day.
- Rainfall is more likely in lower locations and less likely in higher regions.
August
- Average Temperature Range: 9°C to 15°C
- With less heat and rain, the weather begins to improve.
Autumn Weather in Langtang Region
Autumn has the best weather for the Langtang Valley Trek. With a moderate temperature, the weather is mostly clear and stable. The days are shorter but sunny and clear. The temperature ranges from 10°C to 20°C during the day, with an average temperature of 5°C at night.
September
- Average Temperature Range: Around 10°C to 15°C during the day and -10°C to -1°C at night
- The days are warm, sunny, and delightful.
- The nights are chilly but still bearable.
- Early September may still have the feel of summer.
October
- Average Temperature Range: 2°C to 10°C
- It is the most popular trekking month in Nepal.
- It offers stable weather, clear skies, lush flora, and breathtaking mountain views.
November
- Average Temperature Range: -3°C to 10°C
- Early November has autumn-like weather.
- Late November feels like winter. It is, however, not as frigid as winter.
Winter Weather in Langtang Region
During the day, the lower regions are relatively cool, at 7°C on average. But, the nights can be hard, with temperatures dropping below 0°C. The weather in the upper part of the Langtang Trek is unpredictable. Snowfalls and freezing winds can occur at any time. Winter provides great views. You can see snow-capped peaks, landscapes, and clear skies.
December
- The average mean temperature is 9 °C, but it can get as low as -2 °C.
- It is not as cold as in January. The difference, however, is insignificant.
- Snow can also be spotted on the trails in the lower section.
January
- Average Temperature Range: -7°C to 3°C
- The month of January is the coldest of the year.
- Even in the lowest regions, temperatures can drop below -3 °C.
February
- Average Temperature Range: -6°C to 5°C
- It’s the last month of winter.
- Upper regions are still snow-covered.
