Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average UV index in September
Weather in September
Temperature
The transition into September in Geneva involves a small decrease in the average high-temperature, dipping slightly from a warm 25.8°C (78.4°F) in August to an agreeable 20.9°C (69.6°F). Geneva's September nights cool down to an average low-temperature of 10.8°C (51.4°F).Humidity
In September, the average relative humidity is 73%.Rainfall
In Geneva, during September, the rain falls for 8.1 days and regularly aggregates up to 100mm (3.94") of precipitation. In Geneva, during the entire year, the rain falls for 109 days and collects up to 1006mm (39.61") of precipitation.Snowfall
May through October are months without snowfall in Geneva.Daylight
In September, the average length of the day in Geneva, Switzerland, is 12h and 32min.On the first day of the month, sunrise is at 06:56 and sunset at 20:13. On the last day of September, sunrise is at 07:33 and sunset at 19:17 CEST.
Sunshine
In September, the average sunshine in Geneva is 6.2h.UV index
In Geneva, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: In September, the UV index of 5 transforms into the following advice:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the average September temperature in Geneva?
What is the average humidity in September in Geneva?
How many days does it rain in September in Geneva?
When it does not snow in Geneva?
How many hours of daylight does Geneva have in September?
What time are sunrise and sunset in September in Geneva?
How long on average sun shines in September in Geneva?
How high is the UV index in September in Geneva?
Average temperature in September
Geneva, Switzerland
- Average high temperature in September: 20.9°C
The warmest month (with the highest average high temperature) is July (26.5°C).
The month with the lowest average high temperature is January (4.5°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is July (14.4°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average humidity in September
Geneva, Switzerland
- Average humidity in September: 73%
The months with the highest relative humidity are January, November and December (81%).
The month with the lowest relative humidity is July (64%).
Average rainfall in September
Geneva, Switzerland
- Average rainfall in September: 100mm
The wettest month (with the highest rainfall) is October (105mm).
The driest month (with the least rainfall) is February (68mm).
Average rainfall days in September
Geneva, Switzerland
- Average rainfall days in September: 8.1 days
The month with the highest number of rainy days is May (10.6 days).
The month with the least rainy days is July (7.6 days).
Average snowfall in September
Geneva, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (108mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Geneva, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Geneva, Switzerland
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 6h and 1min
The month with the most sunshine is July (Average sunshine: 8h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average UV index in September
Geneva, Switzerland
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 8).
The months with the lowest UV index are January, November and December (UV index 1).
Geneva, Switzerland
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