Willis Island climate by month
Averages and records for each calendar month at Willis Island, Australia, from 1948 to 2025. The warmest month is January, averaging 30.8°C; the coolest is July at 26.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 30.8°C | 25.4°C | 35.1°C3 January 2002 | 21.1°C24 January 1956 | 38 / 44 |
| February | 30.7°C | 25.7°C | 35.2°C9 February 2002 | 22.2°C9 February 1948 | 29 / 44 |
| March | 30.0°C | 25.3°C | 33.4°C2 March 1994 | 22.2°C6 March 1956 | 39 / 44 |
| April | 29.1°C | 24.8°C | 31.8°C5 April 2025 | 22.0°C8 April 1980 | 38 / 44 |
| May | 27.9°C | 23.7°C | 31.5°C4 May 1998 | 19.0°C13 May 1980 | 41 / 44 |
| June | 26.9°C | 22.8°C | 31.5°C7 June 2004 | 18.4°C28 June 2007 | 36 / 43 |
| July | 26.4°C | 22.2°C | 29.4°C16 July 2021 | 16.8°C6 July 2002 | 37 / 43 |
| August | 26.6°C | 22.1°C | 29.2°C6 August 2022 | 17.8°C26 August 1948 | 37 / 43 |
| September | 27.5°C | 22.6°C | 30.7°C11 September 2010 | 19.2°C19 September 1992 | 37 / 42 |
| October | 28.9°C | 24.0°C | 32.2°C28 October 1956 | 20.7°C25 October 1997 | 36 / 43 |
| November | 29.9°C | 24.8°C | 33.6°C22 November 2000 | 21.0°C3 November 1981 | 36 / 42 |
| December | 30.8°C | 25.5°C | 34.1°C27 December 2001 | 21.0°C29 December 1980 | 37 / 44 |
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 29 to 41 years each.
See what Willis Island 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.