WESTMERE climate by month
Averages and records for each calendar month at WESTMERE, Australia, from 2006 to 2026. The warmest month is January, averaging 28.4°C; the coolest is July at 12.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 28.4°C | 11.5°C | 45.8°C27 January 2026 | 0.4°C3 January 2009 | 20 / 20 |
| February | 27.4°C | 11.6°C | 45.5°C7 February 2009 | 1.4°C25 February 2021 | 20 / 21 |
| March | 24.8°C | 10.1°C | 39.9°C16 March 2008 | 0.6°C21 March 2024 | 20 / 21 |
| April | 20.1°C | 8.0°C | 35.6°C1 April 2014 | −1.5°C13 April 2015 | 21 / 21 |
| May | 15.8°C | 6.4°C | 28.0°C1 May 2026 | −3.2°C23 May 2010 | 20 / 21 |
| June | 12.9°C | 4.5°C | 18.5°C2 June 2025 | −5.7°C19 June 2024 | 21 / 21 |
| July | 12.3°C | 4.2°C | 17.7°C29 July 2017 | −6.0°C7 July 2024 | 21 / 21 |
| August | 13.5°C | 4.4°C | 22.0°C27 August 2007 | −3.8°C1 August 2024 | 21 / 21 |
| September | 15.7°C | 5.0°C | 28.5°C19 September 2006 | −3.9°C26 September 2018 | 20 / 21 |
| October | 19.2°C | 5.5°C | 35.4°C12 October 2006 | −4.6°C22 October 2006 | 20 / 20 |
| November | 22.6°C | 7.9°C | 39.7°C29 November 2012 | −2.3°C3 November 2014 | 20 / 20 |
| December | 25.8°C | 9.4°C | 45.2°C20 December 2019 | −0.5°C30 December 2013 | 20 / 20 |
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 20 to 21 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.