Reykjavik Arpt climate by month
Averages and records for each calendar month at Reykjavik Arpt, Iceland, from 1949 to 2026. The warmest month is July, averaging 14.1°C; the coolest is January at 2.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 2.4°C | −2.6°C | 10.7°C4 January 2013 | −19.7°C30 January 1971 | 78 / 78 |
| February | 3.0°C | −2.1°C | 10.2°C25 February 2013 | −17.6°C7 February 1969 | 78 / 78 |
| March | 3.8°C | −1.5°C | 13.0°C31 March 1965 | −16.4°C9 March 1969 | 78 / 78 |
| April | 6.4°C | 0.8°C | 17.1°C30 April 2019 | −16.4°C1 April 1968 | 78 / 78 |
| May | 9.8°C | 3.8°C | 20.6°C14 May 1960 | −7.7°C5 May 1982 | 78 / 78 |
| June | 12.4°C | 7.0°C | 22.4°C11 June 2002 | −0.7°C3 June 1952 | 78 / 78 |
| July | 14.1°C | 8.8°C | 25.7°C30 July 2008 | 1.4°C25 July 1963 | 78 / 78 |
| August | 13.7°C | 8.3°C | 24.8°C11 August 2004 | −0.4°C27 August 1956 | 78 / 78 |
| September | 10.9°C | 5.8°C | 18.5°C10 September 1968 | −4.4°C24 September 1974 | 77 / 77 |
| October | 7.3°C | 2.5°C | 15.7°C1 October 1958 | −10.6°C27 October 1970 | 77 / 77 |
| November | 4.3°C | −0.4°C | 12.9°C12 November 2024 | −15.1°C19 November 2004 | 77 / 77 |
| December | 2.7°C | −2.3°C | 12.0°C14 December 1997 | −16.8°C28 December 1961 | 77 / 77 |
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 77 to 78 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.