Imperial Beach climate by month
Averages and records for each calendar month at Imperial Beach, United States, from 1945 to 2026. The warmest month is August, averaging 23.8°C; the coolest is March at 18.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 18.1°C | 7.9°C | 30.0°C16 January 1976 | −3.3°C7 January 1971 | 41 / 66 |
| February | 18.1°C | 8.6°C | 33.9°C16 February 2016 | 0.0°C6 February 1946 | 38 / 63 |
| March | 18.0°C | 9.5°C | 30.0°C21 March 1989 | 0.6°C2 March 1971 | 43 / 64 |
| April | 19.0°C | 10.9°C | 30.0°C19 April 2009 | 1.1°C4 April 1945 | 47 / 66 |
| May | 19.8°C | 13.3°C | 29.4°C15 May 1967 | 6.1°C30 May 2011 | 43 / 66 |
| June | 20.7°C | 15.3°C | 32.2°C28 June 1980 | 7.8°C1 June 1971 | 40 / 62 |
| July | 22.7°C | 17.0°C | 33.3°C22 July 2015 | 11.1°C7 July 1948 | 43 / 62 |
| August | 23.8°C | 17.9°C | 33.3°C27 August 2008 | 9.4°C31 August 2010 | 41 / 59 |
| September | 23.4°C | 16.7°C | 35.0°C27 September 1970 | 8.9°C30 September 2013 | 40 / 62 |
| October | 22.5°C | 13.6°C | 36.7°C25 October 2017 | 1.7°C29 October 1971 | 45 / 61 |
| November | 20.6°C | 10.2°C | 37.2°C4 November 1976 | −1.0°C25 November 2007 | 41 / 62 |
| December | 18.2°C | 7.9°C | 30.6°C30 December 1980 | −1.1°C8 December 1978 | 36 / 61 |
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 36 to 47 years each.
See what Imperial Beach is doing right now
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.