Ilulissat Arpt climate by month
Averages and records for each calendar month at Ilulissat Arpt, Greenland, from 1991 to 2021. The warmest month is July, averaging 12.0°C; the coolest is February at −11.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −8.9°C | −15.9°C | 9.6°C2 January 1997 | −34.5°C20 January 1995 | 29 / 30 |
| February | −11.1°C | −18.7°C | 11.9°C19 February 2005 | −37.0°C27 February 1992 | 29 / 29 |
| March | −10.4°C | −18.7°C | 9.9°C6 March 2005 | −40.5°C6 March 1993 | 29 / 29 |
| April | −3.4°C | −11.1°C | 13.3°C30 April 2019 | −30.2°C1 April 1992 | 27 / 29 |
| May | 3.7°C | −2.5°C | 17.2°C23 May 2010 | −22.2°C4 May 1993 | 27 / 28 |
| June | 9.7°C | 2.9°C | 21.1°C28 June 2002 | −4.9°C1 June 1992 | 27 / 28 |
| July | 12.0°C | 5.1°C | 21.7°C25 July 2017 | −1.1°C2 July 2017 | 28 / 28 |
| August | 10.3°C | 3.5°C | 20.6°C27 August 1993 | −2.4°C31 August 2002 | 27 / 29 |
| September | 5.7°C | −0.2°C | 18.5°C14 September 2002 | −10.3°C30 September 2007 | 27 / 29 |
| October | 0.1°C | −5.6°C | 19.4°C11 October 2010 | −17.2°C31 October 2010 | 28 / 30 |
| November | −4.0°C | −10.2°C | 15.3°C26 November 2005 | −23.0°C28 November 2001 | 30 / 30 |
| December | −6.3°C | −12.8°C | 12.2°C14 December 2009 | −27.3°C23 December 1993 | 30 / 30 |
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 27 to 30 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.