Longyearbyen/Svalbard Arpt climate by month
Averages and records for each calendar month at Longyearbyen/Svalbard Arpt, Norway, from 1975 to 2026. The warmest month is July, averaging 9.4°C; the coolest is March at −9.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −8.4°C | −15.3°C | 7.7°C16 January 2006 | −38.8°C16 January 1981 | 51 / 51 |
| February | −8.8°C | −16.0°C | 7.0°C8 February 2012 | −43.7°C25 February 1979 | 51 / 51 |
| March | −9.3°C | −16.3°C | 6.3°C2 March 1983 | −46.3°C4 March 1986 | 51 / 51 |
| April | −6.2°C | −12.8°C | 7.5°C25 April 2006 | −39.1°C8 April 1988 | 51 / 51 |
| May | −0.2°C | −4.3°C | 12.9°C28 May 2022 | −21.7°C4 May 1978 | 51 / 51 |
| June | 5.5°C | 1.9°C | 15.7°C21 June 2001 | −8.4°C3 June 1979 | 51 / 51 |
| July | 9.4°C | 5.3°C | 21.7°C25 July 2020 | −0.7°C28 July 2000 | 51 / 51 |
| August | 8.1°C | 4.3°C | 20.3°C11 August 2024 | −3.9°C30 August 1994 | 52 / 52 |
| September | 3.6°C | −0.2°C | 15.2°C2 September 1990 | −12.6°C22 September 1988 | 51 / 51 |
| October | −1.7°C | −6.4°C | 10.2°C7 October 2025 | −20.8°C25 October 1994 | 51 / 51 |
| November | −4.7°C | −10.3°C | 9.2°C12 November 2020 | −33.2°C19 November 1994 | 51 / 51 |
| December | −7.2°C | −13.4°C | 8.7°C30 December 2015 | −35.6°C24 December 1988 | 51 / 51 |
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 51 to 52 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.