Mittarfik Sisimiut climate by month
Averages and records for each calendar month at Mittarfik Sisimiut, Greenland, from 2000 to 2021. The warmest month is July, averaging 13.7°C; the coolest is February at −7.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −6.7°C | −12.5°C | 11.0°C31 January 2010 | −26.2°C23 January 2015 | 18 / 20 |
| February | −7.7°C | −14.5°C | 12.0°C24 February 2005 | −32.4°C9 February 2008 | 18 / 19 |
| March | −6.2°C | −13.6°C | 14.7°C1 March 2006 | −28.5°C8 March 2012 | 19 / 19 |
| April | −1.0°C | −8.1°C | 13.3°C30 April 2019 | −20.6°C7 April 2014 | 19 / 19 |
| May | 6.0°C | −1.1°C | 20.4°C28 May 2010 | −15.0°C2 May 2015 | 19 / 19 |
| June | 11.2°C | 2.8°C | 21.9°C6 June 2012 | −2.3°C3 June 2015 | 19 / 19 |
| July | 13.7°C | 5.2°C | 23.5°C15 July 2009 | −0.3°C5 July 2017 | 19 / 19 |
| August | 12.7°C | 5.5°C | 23.3°C27 August 2003 | 0.3°C22 August 2016 | 18 / 19 |
| September | 7.9°C | 2.2°C | 19.1°C11 September 2003 | −5.2°C30 September 2020 | 19 / 19 |
| October | 3.0°C | −2.5°C | 18.4°C11 October 2010 | −12.2°C30 October 2007 | 19 / 19 |
| November | −1.6°C | −7.0°C | 16.3°C26 November 2005 | −18.3°C29 November 2015 | 19 / 20 |
| December | −4.4°C | −9.8°C | 9.9°C21 December 2001 | −21.4°C26 December 2016 | 18 / 21 |
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 18 to 19 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.