Oulu Arpt climate by month
Averages and records for each calendar month at Oulu Arpt, Finland, from 1957 to 2026. The warmest month is July, averaging 20.8°C; the coolest is January at −6.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −6.2°C | −13.8°C | 9.3°C11 January 1971 | −37.5°C10 January 1987 | 59 / 61 |
| February | −6.0°C | −13.7°C | 7.8°C23 February 1990 | −41.5°C3 February 1966 | 59 / 59 |
| March | −0.9°C | −9.1°C | 10.5°C28 March 2021 | −32.0°C5 March 1981 | 59 / 59 |
| April | 5.1°C | −3.0°C | 20.3°C21 April 1999 | −21.4°C2 April 1965 | 58 / 60 |
| May | 12.5°C | 3.1°C | 28.6°C30 May 2024 | −9.1°C1 May 1976 | 59 / 60 |
| June | 18.3°C | 9.2°C | 31.7°C29 June 2000 | −1.0°C1 June 1965 | 59 / 60 |
| July | 20.8°C | 11.9°C | 33.0°C29 July 2010 | 4.0°C19 July 1978 | 60 / 60 |
| August | 18.4°C | 10.1°C | 30.7°C8 August 2023 | −1.5°C29 August 1984 | 60 / 60 |
| September | 12.5°C | 5.4°C | 24.8°C4 September 1963 | −8.0°C30 September 1978 | 59 / 59 |
| October | 5.6°C | 0.5°C | 16.4°C1 October 2000 | −20.6°C31 October 1960 | 59 / 59 |
| November | −0.3°C | −5.4°C | 10.8°C6 November 2020 | −33.0°C29 November 1980 | 59 / 59 |
| December | −4.0°C | −10.6°C | 8.2°C2 December 2024 | −37.2°C31 December 2002 | 59 / 60 |
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 58 to 60 years each.
See what Oulu 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.