Brest/Guipavas Arpt climate by month
Averages and records for each calendar month at Brest/Guipavas Arpt, France, from 1973 to 2025. The warmest month is August, averaging 21.0°C; the coolest is January at 9.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 9.4°C | 4.3°C | 20.0°C19 January 1973 | −9.4°C13 January 1987 | 18 / 50 |
| February | 10.2°C | – | 20.0°C16 February 1977 | −6.2°C7 February 1991 | 16 / 49 |
| March | 11.7°C | 2.8°C | 23.9°C19 March 2005 | −4.8°C1 March 2005 | 31 / 49 |
| April | 13.5°C | 5.4°C | 28.2°C15 April 2015 | −2.4°C3 April 2022 | 35 / 49 |
| May | 16.5°C | 7.4°C | 29.5°C26 May 2017 | −0.2°C5 May 2019 | 39 / 49 |
| June | 19.3°C | 10.7°C | 34.3°C27 June 2019 | 1.1°C18 June 1985 | 35 / 49 |
| July | 20.8°C | 13.0°C | 35.9°C19 July 2022 | 6.0°C7 July 2020 | 42 / 49 |
| August | 21.0°C | 11.8°C | 36.0°C13 August 2022 | −1.7°C31 August 2019 | 41 / 49 |
| September | 19.2°C | 10.4°C | 32.2°C14 September 2020 | 0.0°C6 September 1978 | 33 / 49 |
| October | 15.8°C | 9.8°C | 28.1°C2 October 2011 | −1.5°C28 October 2003 | 29 / 49 |
| November | 12.6°C | 7.6°C | 20.7°C13 November 1989 | −4.0°C29 November 1977 | 18 / 49 |
| December | 9.9°C | – | 20.0°C5 December 1977 | −5.5°C11 December 1991 | 10 / 48 |
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 10 to 42 years each.
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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.