Geneva weather by month
Measured at Geneva/Cointrin Arpt
Averages and records for each calendar month at Geneva/Cointrin Arpt, Switzerland, from 1955 to 2026. The warmest month is July, averaging 26.0°C; the coolest is January at 4.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 4.6°C | −1.5°C | 18.1°C25 January 2025 | −19.9°C13 January 1968 | 71 / 72 |
| February | 6.7°C | −0.8°C | 20.1°C28 February 2019 | −20.0°C15 February 1956 | 71 / 72 |
| March | 11.1°C | 1.4°C | 24.9°C22 March 1990 | −13.3°C4 March 1965 | 72 / 72 |
| April | 15.1°C | 4.4°C | 28.3°C14 April 2024 | −5.2°C6 April 1970 | 72 / 72 |
| May | 19.4°C | 8.4°C | 33.8°C24 May 2009 | −2.2°C8 May 1957 | 72 / 72 |
| June | 23.5°C | 11.9°C | 37.4°C27 June 2026 | 1.3°C4 June 1962 | 72 / 72 |
| July | 26.0°C | 13.8°C | 39.7°C7 July 2015 | 3.0°C7 July 1962 | 71 / 72 |
| August | 25.4°C | 13.4°C | 39.3°C24 August 2023 | 4.9°C31 August 1986 | 72 / 72 |
| September | 21.0°C | 10.4°C | 32.6°C3 September 1962 | 0.2°C30 September 1972 | 70 / 71 |
| October | 15.2°C | 6.7°C | 27.3°C6 October 1977 | −4.7°C31 October 1997 | 71 / 71 |
| November | 8.9°C | 2.3°C | 22.1°C2 November 2020 | −10.9°C27 November 1989 | 71 / 71 |
| December | 5.2°C | −0.3°C | 19.9°C17 December 1989 | −17.0°C30 December 1964 | 71 / 71 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 70 to 72 years each.
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Climate at nearby stations
The closest stations with twelve months of archive of their own, nearest first.
Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.