Capetown Intl climate by month
Averages and records for each calendar month at Capetown Intl, South Africa, from 1973 to 2025. The warmest month is February, averaging 28.0°C; the coolest is July at 18.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 27.8°C | 15.9°C | 41.3°C19 January 2000 | 4.7°C23 January 1998 | 37 / 49 |
| February | 28.0°C | 15.4°C | 37.4°C18 February 2000 | 6.2°C19 February 1982 | 34 / 48 |
| March | 26.8°C | 14.5°C | 42.4°C3 March 2015 | 1.0°C24 March 2014 | 36 / 48 |
| April | 24.5°C | 12.0°C | 37.4°C13 April 2012 | 0.0°C28 April 1993 | 34 / 48 |
| May | 21.6°C | 9.6°C | 33.7°C17 May 2022 | 0.0°C18 May 2000 | 33 / 48 |
| June | 19.2°C | 7.6°C | 30.9°C8 June 2022 | −0.4°C10 June 1988 | 30 / 49 |
| July | 18.6°C | 6.9°C | 30.3°C31 July 2017 | −4.6°C21 July 2000 | 34 / 49 |
| August | 19.2°C | 7.3°C | 31.5°C29 August 2023 | −0.2°C5 August 2003 | 36 / 48 |
| September | 20.3°C | 8.9°C | 37.1°C13 September 2005 | 0.6°C10 September 1998 | 34 / 47 |
| October | 23.0°C | 10.7°C | 37.2°C10 October 1985 | 0.0°C14 October 1998 | 36 / 47 |
| November | 24.7°C | 13.1°C | 38.7°C15 November 2000 | 3.4°C8 November 1996 | 35 / 49 |
| December | 26.5°C | 15.0°C | 39.1°C30 December 2015 | 6.2°C7 December 1982 | 38 / 49 |
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 30 to 38 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.