Geneva Weather in August

The climate in Geneva during August can be summarized as hot, humid and wet.

August is in the summer in Geneva and is typically the warmest month of the year. Daytime maximum temperatures average around a steamy 32°C (90°F), whilst at night 23°C (73°F) is normal.

On average August is the 3rd wettest month of the year in Geneva with around 173mm 6.8 inches of rain making it a wet time to visit. This rainfall is typically spread over 16 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.2 hours of sunshine per day.

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 Geneva in August 2025.