Dalatangi climate by month
Averages and records for each calendar month at Dalatangi, Iceland, from 1949 to 2026. The warmest month is August, averaging 11.1°C; the coolest is January at 3.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 3.4°C | −1.4°C | 18.8°C14 January 1992 | −16.5°C2 January 1968 | 78 / 78 |
| February | 3.5°C | −1.3°C | 18.1°C17 February 1998 | −16.9°C6 February 1969 | 78 / 78 |
| March | 3.4°C | −1.3°C | 20.4°C18 March 2021 | −17.1°C8 March 1969 | 78 / 78 |
| April | 4.4°C | −0.2°C | 19.1°C3 April 2007 | −19.2°C1 April 1968 | 78 / 78 |
| May | 6.4°C | 1.9°C | 21.5°C26 May 1956 | −7.6°C6 May 1968 | 78 / 78 |
| June | 9.1°C | 4.5°C | 22.5°C26 June 2021 | −1.9°C1 June 1975 | 78 / 78 |
| July | 10.9°C | 6.6°C | 23.9°C12 July 2026 | 1.0°C7 July 1968 | 78 / 78 |
| August | 11.1°C | 7.1°C | 25.1°C28 August 1976 | 1.4°C21 August 1964 | 78 / 78 |
| September | 9.7°C | 5.6°C | 26.0°C12 September 1949 | −1.7°C30 September 1969 | 77 / 77 |
| October | 7.1°C | 3.0°C | 23.5°C1 October 1973 | −8.6°C30 October 1968 | 77 / 77 |
| November | 5.0°C | 0.6°C | 22.7°C12 November 1999 | −10.4°C28 November 1955 | 77 / 77 |
| December | 3.6°C | −1.0°C | 16.6°C3 December 1981 | −15.4°C18 December 1973 | 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.