Gangtok Weather in August
What's the weather like in Gangtok (Sikkim) in August 2025?
The climate in Gangtok during August can be summarized as warm, humid and very wet.
August is in the summer in Gangtok and is typically the warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (79°F), whilst at night 19°C (66°F) is normal.
| Daytime temperature | 26°C 78.7°F |
|---|---|
| Nightly temperature | 19.1°C 66.3°F |
| Average temperature | 22.5°C 72.5°F |
| Daily sunshine | 4.6 hrs |
| Avg rainfall | 619 mm 24.4 ins |
| Rainy days | 15 days |
| Sea temperature | 25.7°C 78.2°F |
| Humidity | 88% |
| Windspeed | 4kph 2 mph |
On average August is the 2nd wettest month of the year in Gangtok with around 619mm 24.4 inches of rain making it a very wet time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.6 hours of sunshine per day.
August temperatures in Gangtok
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Gangtok in August 2025.
Other monthly averages
Best places to visit in August
Gangtok weather stats
| Hottest month: | August | 25.8°C 78.4°F |
|---|---|---|
| Driest month: | December | 8mm 0.3ins |
| Sunniest month: | January | 7.6hrs |
| Coldest month: | January | 15.9°C 60.6°F |
| Wettest month: | July | 825mm 32.5ins |
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