The climate in Geneva during September can be summarized as warm and a little damp.
September is in the fall / autumn in Geneva and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a comfortable 25°C (77°F), whilst at night 12°C (53°F) is normal.
Daytime temperature | 25.2°C 77.3°F |
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Nightly temperature | 11.7°C 53°F |
Average temperature | 18.4°C 65.1°F |
Daily sunshine | 9.1 hrs |
Avg rainfall | 81 mm 3.2 ins |
Rainy days | 8 days |
Sea temperature | 19°C 66.1°F |
Humidity | 68% |
Windspeed | 17.6kph 11 mph |
On average September is the 5th wettest month of the year in Geneva with around 81mm 3.2 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.1 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 September 2024.
Best places to visit in September
Hottest month: | July | 31.3°C 88.3°F |
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Driest month: | January | 14mm 0.6ins |
Sunniest month: | July | 12hrs |
Coldest month: | January | 0.7°C 33.3°F |
Wettest month: | May | 106mm 4.2ins |