Neptune Island climate by month
Averages and records for each calendar month at Neptune Island, Australia, from 1962 to 2026. The warmest month is February, averaging 22.3°C; the coolest is July at 15.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 22.1°C | 16.3°C | 36.9°C16 January 2014 | 9.4°C1 January 1970 | 59 / 64 |
| February | 22.3°C | 16.7°C | 35.6°C3 February 1993 | 8.9°C22 February 1964 | 61 / 65 |
| March | 21.2°C | 16.1°C | 32.8°C2 March 1965 | 9.0°C19 March 1975 | 62 / 65 |
| April | 19.7°C | 15.1°C | 29.4°C11 April 1968 | 6.1°C8 April 1964 | 59 / 65 |
| May | 17.8°C | 13.8°C | 24.0°C13 May 1973 | 6.7°C31 May 1977 | 64 / 65 |
| June | 16.0°C | 12.3°C | 21.7°C18 June 1962 | 6.4°C9 June 1969 | 62 / 65 |
| July | 15.3°C | 11.4°C | 22.5°C29 July 1975 | 5.0°C13 July 2016 | 62 / 64 |
| August | 15.4°C | 11.3°C | 25.9°C30 August 2007 | 3.7°C8 August 1989 | 60 / 65 |
| September | 16.3°C | 11.7°C | 27.6°C18 September 2006 | 3.8°C2 September 1990 | 60 / 65 |
| October | 17.6°C | 12.5°C | 28.8°C27 October 1990 | 6.1°C27 October 1971 | 57 / 64 |
| November | 19.2°C | 13.7°C | 31.2°C19 November 2009 | 7.2°C20 November 1968 | 59 / 64 |
| December | 20.6°C | 15.0°C | 33.2°C31 December 2007 | 8.2°C4 December 1965 | 60 / 63 |
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 57 to 64 years each.
See what Neptune 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.