Geneva September Weather

Averages and records for weather in Geneva, Switzerland in the month of September.
Typical Geneva September Weather
1991–2020
Average daily high 21.0 °C
Average daily low 10.9 °C
Average monthly precipitation 8.7 cm
Daily chance of precipitation 38.1%
Geneva September Weather Records
1955–2024
Highest temperature 32.6 °C September 3, 1962
Lowest temperature 0.2 °C September 30, 1972
Highest daily low 18.9 °C September 14, 1961
Lowest daily high 9.0 °C September 27, 2020
Hottest average high temperature 25.4 °C 2023
Coldest average high temperature 17.4 °C 1965
Most daily precipitation 8.5 cm September 9, 1993
Most monthly precipitation 27.2 cm 1993
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°C) Record (°C)
High Low High Low
September 1 24.0 12.8 30.2 5.2
September 2 23.8 12.7 31.7 4.5
September 3 23.6 12.5 32.6 4.6
September 4 23.4 12.4 28.6 6.5
September 5 23.2 12.3 30.1 4.6
September 6 23.0 12.1 29.5 4.9
September 7 22.8 12.0 31.0 5.6
September 8 22.6 11.9 31.0 5.0
September 9 22.4 11.8 31.3 5.0
September 10 22.2 11.6 30.7 4.1
September 11 21.9 11.5 31.2 3.0
September 12 21.7 11.3 31.4 1.7
September 13 21.5 11.2 30.7 3.6
September 14 21.4 11.1 31.5 4.3
September 15 21.2 11.0 29.7 3.9
September 16 21.1 10.9 29.9 1.1
September 17 21.0 10.8 29.6 2.8
September 18 20.8 10.7 29.7 0.8
September 19 20.6 10.6 28.2 1.2
September 20 20.5 10.5 29.6 1.2
September 21 20.3 10.3 28.9 2.4
September 22 20.1 10.2 28.6 0.8
September 23 19.9 10.1 29.2 2.2
September 24 19.7 10.0 26.5 2.9
September 25 19.5 9.9 26.7 1.7
September 26 19.3 9.8 26.0 1.3
September 27 19.1 9.7 27.2 2.3
September 28 18.9 9.5 25.0 1.8
September 29 18.7 9.4 26.7 0.3
September 30 18.5 9.4 23.9 0.2
Weather Station Details
Years Station Coordinates
1955–2024 Geneve Cointrin location