Vaasa Arpt climate by month
Averages and records for each calendar month at Vaasa Arpt, Finland, from 1952 to 2026. The warmest month is July, averaging 20.8°C; the coolest is January at −3.5°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −3.5°C | −10.5°C | 8.2°C25 January 2023 | −36.2°C10 January 1987 | 55 / 64 |
| February | −3.5°C | −11.1°C | 8.6°C23 February 1990 | −38.6°C3 February 1966 | 56 / 63 |
| March | 0.7°C | −7.3°C | 14.5°C28 March 2007 | −31.1°C17 March 1957 | 57 / 63 |
| April | 6.6°C | −1.8°C | 21.8°C30 April 2008 | −21.1°C6 April 1956 | 57 / 63 |
| May | 13.6°C | 3.0°C | 28.6°C15 May 2010 | −7.6°C1 May 1976 | 60 / 64 |
| June | 18.7°C | 8.3°C | 31.8°C28 June 1972 | −2.8°C7 June 1955 | 58 / 64 |
| July | 20.8°C | 10.9°C | 32.0°C28 July 1960 | 0.0°C7 July 1953 | 59 / 63 |
| August | 19.0°C | 9.7°C | 30.6°C7 August 2023 | −1.1°C31 August 1952 | 60 / 63 |
| September | 13.5°C | 5.7°C | 27.7°C6 September 1968 | −6.1°C16 September 1958 | 57 / 63 |
| October | 7.4°C | 1.6°C | 17.6°C4 October 2020 | −20.4°C31 October 1992 | 57 / 62 |
| November | 1.8°C | −3.4°C | 13.3°C3 November 2020 | −27.9°C21 November 1965 | 56 / 63 |
| December | −1.7°C | −8.0°C | 8.4°C6 December 2000 | −34.4°C30 December 1978 | 58 / 63 |
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 55 to 60 years each.
See what Vaasa Arpt is doing right now
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.