Gladstone climate by month
Averages and records for each calendar month at Gladstone, Australia, from 1957 to 2026. The warmest month is January, averaging 31.4°C; the coolest is July at 23.0°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 31.4°C | 22.6°C | 39.7°C16 January 2025 | 12.8°C22 January 1997 | 67 / 69 |
| February | 31.1°C | 22.5°C | 40.1°C3 February 1990 | 13.7°C6 February 2020 | 65 / 69 |
| March | 30.3°C | 21.7°C | 42.0°C12 March 2007 | 15.0°C12 March 2020 | 66 / 69 |
| April | 28.5°C | 19.7°C | 34.4°C2 April 2009 | 11.0°C29 April 1999 | 67 / 68 |
| May | 25.8°C | 17.0°C | 33.2°C2 May 2016 | 8.5°C29 May 1987 | 68 / 68 |
| June | 23.4°C | 14.4°C | 30.1°C26 June 2023 | 6.1°C26 June 1960 | 67 / 68 |
| July | 23.0°C | 13.5°C | 29.4°C2 July 2009 | 4.4°C13 July 1960 | 68 / 68 |
| August | 24.4°C | 14.4°C | 31.6°C30 August 2009 | 4.7°C23 August 1995 | 68 / 69 |
| September | 26.7°C | 16.6°C | 33.9°C5 September 2019 | 9.6°C5 September 1958 | 68 / 69 |
| October | 28.6°C | 18.8°C | 40.0°C31 October 1958 | 10.9°C5 October 1981 | 67 / 68 |
| November | 30.1°C | 20.6°C | 40.1°C18 November 1990 | 14.7°C17 November 2006 | 68 / 68 |
| December | 31.2°C | 22.0°C | 39.8°C8 December 1981 | 12.4°C6 December 1995 | 68 / 69 |
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 65 to 68 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.