De Aar climate by month
Averages and records for each calendar month at De Aar, South Africa, from 1993 to 2025. The warmest month is January, averaging 33.4°C; the coolest is June at 18.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 33.4°C | 16.5°C | 42.8°C5 January 2016 | 5.9°C10 January 1998 | 31 / 32 |
| February | 32.7°C | 16.3°C | 39.9°C7 February 1998 | 6.1°C11 February 2007 | 29 / 31 |
| March | 30.2°C | 14.3°C | 38.8°C12 March 2024 | 3.8°C29 March 2002 | 31 / 32 |
| April | 25.2°C | 10.2°C | 33.6°C6 April 1999 | −0.9°C28 April 2011 | 31 / 31 |
| May | 21.6°C | 6.9°C | 29.9°C3 May 2014 | −3.7°C20 May 2012 | 31 / 31 |
| June | 18.1°C | 3.3°C | 25.5°C7 June 2010 | −5.9°C10 June 2013 | 30 / 31 |
| July | 18.1°C | 2.6°C | 25.9°C25 July 2005 | −7.6°C16 July 1996 | 31 / 32 |
| August | 21.0°C | 4.1°C | 29.8°C30 August 2010 | −6.3°C20 August 2003 | 29 / 32 |
| September | 25.0°C | 7.3°C | 35.0°C25 September 2015 | −3.4°C1 September 2008 | 30 / 32 |
| October | 28.4°C | 10.6°C | 37.7°C28 October 2016 | −0.8°C1 October 2024 | 31 / 32 |
| November | 30.4°C | 12.6°C | 39.2°C28 November 2019 | 1.9°C7 November 1998 | 30 / 31 |
| December | 32.6°C | 15.1°C | 40.0°C18 December 2016 | 3.6°C1 December 1995 | 31 / 31 |
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 29 to 31 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.