SWAN ISLAND climate by month
Averages and records for each calendar month at SWAN ISLAND, Australia, from 2001 to 2026. The warmest month is February, averaging 21.3°C; the coolest is July at 13.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 21.2°C | 15.2°C | 31.9°C29 January 2009 | 8.6°C2 January 2009 | 25 / 25 |
| February | 21.3°C | 15.5°C | 30.3°C17 February 2023 | 8.7°C29 February 2008 | 25 / 25 |
| March | 20.6°C | 14.7°C | 29.7°C14 March 2008 | 6.8°C24 March 2012 | 25 / 25 |
| April | 18.3°C | 12.9°C | 24.5°C1 April 2014 | 6.1°C21 April 2021 | 25 / 25 |
| May | 16.1°C | 10.9°C | 23.0°C1 May 2026 | 4.3°C27 May 2004 | 25 / 25 |
| June | 14.1°C | 9.3°C | 18.0°C2 June 2003 | 2.8°C27 June 2010 | 25 / 25 |
| July | 13.3°C | 8.5°C | 17.6°C18 July 2013 | 3.1°C18 July 2004 | 25 / 25 |
| August | 13.7°C | 8.5°C | 18.1°C25 August 2004 | 2.2°C21 August 2013 | 24 / 25 |
| September | 14.7°C | 9.2°C | 21.4°C28 September 2014 | 3.1°C12 September 2004 | 23 / 25 |
| October | 16.0°C | 10.3°C | 23.0°C20 October 2011 | 3.8°C28 October 2006 | 24 / 25 |
| November | 17.8°C | 12.0°C | 29.7°C21 November 2019 | 4.6°C16 November 2006 | 25 / 25 |
| December | 19.5°C | 13.4°C | 28.4°C31 December 2009 | 6.7°C4 December 2011 | 25 / 25 |
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 23 to 25 years each.
See what SWAN 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.