Santa Monica Muni climate by month
Averages and records for each calendar month at Santa Monica Muni, United States, from 1998 to 2026. The warmest month is September, averaging 24.8°C; the coolest is December at 18.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 19.4°C | 9.2°C | 31.1°C31 January 2003 | 0.0°C14 January 2007 | 26 / 26 |
| February | 18.8°C | 9.3°C | 32.2°C12 February 2022 | 3.3°C3 February 2002 | 26 / 26 |
| March | 19.3°C | 10.7°C | 35.0°C17 March 2026 | 3.9°C12 March 2006 | 26 / 26 |
| April | 20.0°C | 11.8°C | 35.0°C20 April 2009 | 5.6°C8 April 2011 | 26 / 27 |
| May | 20.3°C | 13.8°C | 32.2°C2 May 2004 | 8.3°C3 May 2023 | 25 / 26 |
| June | 21.9°C | 15.7°C | 30.6°C30 June 2015 | 10.6°C1 June 2011 | 26 / 26 |
| July | 23.9°C | 17.4°C | 33.3°C7 July 2018 | 13.3°C12 July 2001 | 26 / 26 |
| August | 24.7°C | 17.7°C | 33.9°C31 August 2017 | 12.2°C30 August 2010 | 26 / 26 |
| September | 24.8°C | 17.1°C | 39.4°C27 September 2010 | 10.6°C19 September 2010 | 25 / 26 |
| October | 23.4°C | 14.7°C | 38.3°C24 October 2017 | 8.3°C31 October 2019 | 26 / 26 |
| November | 21.4°C | 11.3°C | 35.0°C3 November 2010 | 3.3°C30 November 2006 | 26 / 26 |
| December | 18.7°C | 9.1°C | 30.0°C12 December 2010 | 2.8°C23 December 2011 | 26 / 26 |
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 25 to 26 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.