Wilsons Promontory is a weather station located 95 m above sea level. Its records go back to 1873: 81 years of temperature are available up to 2025, along with rainfall and a comparison with two reference normals. Over 1991–2020 the annual mean temperature there is 14.6 °C, noticeably higher than over 1961–1990 (14.2 °C): a difference of 0.4 °C. The warmest year of the series is 2014 (15.6 °C) and the coldest 1943 (13.0 °C). The last complete year, 2023, ranks 12 out of 81, from warmest to coldest. Over 1961–2025, the annual mean temperature changes by +0.15 °C per decade. The station ranks 162 out of 227 stations, from the fastest rise to the slowest.
Annual mean temperature since 1873
The first ten years of the series (1910–1919) average 14.1 °C; the last ten (2014–2023) average 14.8 °C, a difference of +0.7 °C. Of the ten warmest years in the series, 9 fall after 1999. The warmest is 2014 (15.6 °C). The ten-year running mean peaks at 14.9 °C (2019) and bottoms out at 13.8 °C (1953).
Annual rainfall since 1873
On average 1062 mm of rain falls per year over the 151 documented years. The wettest year, 1995, received 1490 mm; the driest, 1967, only 659 mm, which is 2.3 times less. The 1991–2020 normal (1101 mm per year) is 30 mm (2.8 %) above the 1961–1990 one (1071 mm). Over 1991–2020, August is on average the wettest month (146 mm) and February the driest (51 mm). Between 2005 and 2025, 13 years out of 20 exceeded the series average.
Monthly normals: 1961–1990 against 1991–2020
The table compares, month by month, the mean temperature and the rainfall total of two thirty-year reference periods. The difference column shows what the recent period changes compared with the earlier one.
| Month | Temp. 1961–1990 | Temp. 1991–2020 | Difference | Rain 1961–1990 | Rain 1991–2020 | Difference |
|---|---|---|---|---|---|---|
| January | 17.7 °C | 18.2 °C | +0.5 °C | 51 mm | 60 mm | +9 mm |
| February | 18.1 °C | 18.4 °C | +0.3 °C | 40 mm | 51 mm | +11 mm |
| March | 17.6 °C | 17.5 °C | −0.1 °C | 70 mm | 62 mm | −8 mm |
| April | 15.5 °C | 15.7 °C | +0.2 °C | 84 mm | 77 mm | −7 mm |
| May | 13.5 °C | 13.7 °C | +0.2 °C | 136 mm | 117 mm | −19 mm |
| June | 11.3 °C | 11.9 °C | +0.6 °C | 114 mm | 118 mm | +4 mm |
| July | 10.5 °C | 11.1 °C | +0.6 °C | 134 mm | 144 mm | +10 mm |
| August | 10.8 °C | 11.2 °C | +0.4 °C | 121 mm | 146 mm | +25 mm |
| September | 11.9 °C | 12.4 °C | +0.5 °C | 100 mm | 108 mm | +8 mm |
| October | 13.2 °C | 13.7 °C | +0.5 °C | 92 mm | 82 mm | −10 mm |
| November | 14.6 °C | 15.1 °C | +0.5 °C | 66 mm | 67 mm | +1 mm |
| December | 16.1 °C | 16.5 °C | +0.4 °C | 63 mm | 69 mm | +6 mm |
The largest temperature change is in June (+0.6 °C) and the smallest in March (−0.1 °C); over the year the mean difference is +0.4 °C, and 11 months out of twelve are warmer than before. For rainfall, the largest difference is in August (+25 mm) and the smallest in May (−19 mm).
Records at Wilsons Promontory
- Warmest year: 15.6 °C, in 2014
- Coldest year: 13.0 °C, in 1943
- Driest year: 659 mm, in 1967
- Wettest year: 1490 mm, in 1995
- Warmest month: 20.6 °C, in February 2000
- Coldest month: 9.1 °C, in July 1952
- Wettest month: 500 mm, in March 1941
- Hottest day: 42.0 °C, on 7 February 2009
- Coldest day: −0.1 °C, on 9 June 1968
- Heaviest rain in one day: 123.2 mm, on 20 May 1988
2.6 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 42.1 °C.
Temperature trend over 1961–2025
The regression line of annual mean temperature changes by +0.15 °C per decade between 1961 and 2025, about +1.0 °C over the whole period. That is slower than the median of the 227 stations (+0.19 °C per decade), by 0.04 °C per decade: the station ranks 162 out of 227.
The last 24 months against the 1991–2020 normal
Over the last 23 months (November 2024 to September 2026), 7 months out of 12 were warmer than the 1991–2020 normal for the same month; the mean departure is +0.2 °C. The highest departure was in April 2025 (+1.4 °C); the lowest, in November 2025 (−1.7 °C). The last twelve months add up to 1221 mm of rain, which is 111 % of the 1991–2020 annual normal (1101 mm).
| Month | Temperature | Departure from normal | Rain | Normal rain |
|---|---|---|---|---|
| November 2024 | 16.1 °C | +1.0 °C | – | 67 mm |
| December 2024 | 17.6 °C | +1.1 °C | 61 mm | 69 mm |
| January 2025 | 18.9 °C | +0.7 °C | 14 mm | 60 mm |
| February 2025 | – | – | 39 mm | 51 mm |
| March 2025 | – | – | 54 mm | 62 mm |
| April 2025 | 17.1 °C | +1.4 °C | 30 mm | 77 mm |
| May 2025 | 14.6 °C | +0.9 °C | 109 mm | 117 mm |
| June 2025 | 11.4 °C | −0.5 °C | 88 mm | 118 mm |
| July 2025 | 11.3 °C | +0.2 °C | 167 mm | 144 mm |
| August 2025 | 11.3 °C | +0.1 °C | 137 mm | 146 mm |
| September 2025 | 12.4 °C | 0.0 °C | 184 mm | 108 mm |
| October 2025 | 13.5 °C | −0.2 °C | 204 mm | 82 mm |
| November 2025 | 13.4 °C | −1.7 °C | 92 mm | 67 mm |
| December 2025 | 15.7 °C | −0.8 °C | 55 mm | 69 mm |
| January 2026 | – | – | 18 mm | 60 mm |
| February 2026 | – | – | 45 mm | 51 mm |
| March 2026 | – | – | 46 mm | 62 mm |
| April 2026 | – | – | 72 mm | 77 mm |
| May 2026 | – | – | 107 mm | 117 mm |
| June 2026 | – | – | 206 mm | 118 mm |
| July 2026 | – | – | 191 mm | 144 mm |
| August 2026 | – | – | 164 mm | 146 mm |
| September 2026 | – | – | 21 mm | 108 mm |
Data source and licence
Data source: Bureau of Meteorology (ACORN-SAT) and NOAA NCEI (GHCN-Daily) (dataset “ACORN-SAT v2 daily (homogenised) + GHCN-Daily”), licence CC BY 4.0; Public domain (NOAA NCEI). Last updated: 29 October 2026.
The data for Wilsons Promontory are shown as the source publishes them; this site does not correct them. A year is kept only if at least eleven months of measurements are available, and a normal is computed only with at least twenty years of data out of its thirty. Temperatures are rounded to 0.1 °C and rainfall to the millimetre. The station is one of 227 stations in Australia: the overview page lets you compare them.
Frequently asked questions
What is the annual mean temperature at Wilsons Promontory?
Over 1991–2020, the annual mean temperature at Wilsons Promontory is 14.6 °C. It was 14.2 °C over 1961–1990, a difference of +0.4 °C.
What is the warmest year ever measured at Wilsons Promontory?
Since records began in 1873, the warmest year at Wilsons Promontory is 2014, at 15.6 °C on average. The coldest is 1943 (13.0 °C).
Is the climate at Wilsons Promontory getting warmer?
Yes: at Wilsons Promontory, the annual mean temperature rises by 0.15 °C per decade between 1961 and 2025, +1.0 °C in total. 9 of the 10 warmest years in the series fall after 1999.
Neighbouring stations