Mount Wellington climate by month
Averages and records for each calendar month at Mount Wellington, Australia, from 1961 to 2026. The warmest month is January, averaging 13.8°C; the coolest is July at 2.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 13.8°C | 5.0°C | 29.8°C14 January 2014 | −5.0°C9 January 1969 | 44 / 47 |
| February | 13.4°C | 5.2°C | 29.6°C25 February 1995 | −7.4°C19 February 1994 | 45 / 47 |
| March | 11.5°C | 4.1°C | 28.4°C2 March 2019 | −4.7°C31 March 1995 | 48 / 48 |
| April | 8.5°C | 2.3°C | 24.7°C23 April 1993 | −6.5°C29 April 1992 | 48 / 48 |
| May | 5.7°C | 0.7°C | 17.3°C10 May 2013 | −8.1°C26 May 1966 | 47 / 48 |
| June | 3.8°C | −0.5°C | 13.3°C15 June 1961 | −7.5°C13 June 1993 | 44 / 47 |
| July | 2.6°C | −1.5°C | 12.7°C19 July 2026 | −8.1°C28 July 1965 | 46 / 48 |
| August | 2.9°C | −1.6°C | 13.4°C30 August 2006 | −7.8°C5 August 1964 | 47 / 48 |
| September | 4.8°C | −1.1°C | 19.5°C30 September 1961 | −9.1°C3 September 1993 | 46 / 48 |
| October | 7.5°C | 0.3°C | 22.8°C18 October 2017 | −9.5°C10 October 1990 | 45 / 46 |
| November | 9.6°C | 1.8°C | 26.2°C23 November 1966 | −6.2°C5 November 1963 | 44 / 44 |
| December | 11.4°C | 3.0°C | 28.6°C30 December 2019 | −4.5°C8 December 1991 | 45 / 45 |
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 44 to 48 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.