Climate Insights for Gangtok

The climate in Gangtok is temperate. The average annual temperature is 13°C and approximately 4404mm of precipitation falls per year. Gangtok receives a notable amount of rainfall throughout the year, including during its driest month. Gangtok is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, February, December, when temperatures can drop to 2°C. Light snow can occur between January and December.

Gangtok sees moderate temperature variation throughout the year, ranging from 2°C to 21°C. August is the warmest month, though highs remain moderate at 21°C with a mean of 18°C. January is the coolest month, with minimum temperatures around 2°C and an average of 5°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between October and November, with a 4°C shift in average temperatures.

Gangtok is a very wet location, receiving approximately 4404mm of precipitation annually, which averages out to around 367mm per month. The wettest month is July, averaging 1167mm of rainfall. August and June also tend to see above-average precipitation. The driest month is November, with just 40mm. That's 1127mm less than July, 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. Light snowfall can occur between January and December, totalling around 20cm annually. February is the snowiest month with approximately 7cm.

Gangtok is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 7km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently spring in Gangtok, which began on March 20, 2026. Gangtok is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 21°C, while the coldest stretch bottoms out in January near 2°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The table below shows monthly climate averages for Gangtok 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. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. 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.