Bastia/Poretta Arpt climate by month
Averages and records for each calendar month at Bastia/Poretta Arpt, France, from 1973 to 2025. The warmest month is August, averaging 29.6°C; the coolest is January at 14.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 14.2°C | 4.7°C | 25.1°C13 January 2004 | −3.2°C11 January 1985 | 21 / 49 |
| February | 14.6°C | – | 25.6°C11 February 2020 | −2.2°C20 February 1992 | 12 / 48 |
| March | 15.9°C | 6.9°C | 30.0°C15 March 1977 | −1.0°C1 March 1973 | 22 / 48 |
| April | 18.1°C | 8.3°C | 26.3°C13 April 2024 | 0.8°C8 April 2003 | 19 / 48 |
| May | 22.0°C | 12.5°C | 32.6°C27 May 2022 | 1.6°C12 May 1988 | 29 / 48 |
| June | 25.9°C | 16.0°C | 35.5°C24 June 2016 | 8.9°C8 June 1986 | 22 / 48 |
| July | 29.4°C | 18.9°C | 39.0°C6 July 1994 | 12.0°C8 July 1978 | 24 / 48 |
| August | 29.6°C | 19.3°C | 38.3°C20 August 1999 | 14.0°C24 August 1976 | 34 / 48 |
| September | 26.0°C | 15.2°C | 34.3°C5 September 1998 | 7.6°C25 September 1984 | 21 / 48 |
| October | 22.0°C | 11.7°C | 29.9°C27 October 2020 | −1.1°C19 October 1992 | 24 / 48 |
| November | 17.9°C | 8.4°C | 27.4°C15 November 2023 | 0.0°C22 November 1973 | 19 / 48 |
| December | 15.0°C | 6.9°C | 23.9°C17 December 1989 | −2.2°C30 December 1996 | 21 / 47 |
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 12 to 34 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.