Melbourne Airport is a weather station located 113 m above sea level, 9 km from St Albans. Its records go back to 1971: 55 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 14.9 °C, noticeably higher than over 1961–1990 (14.4 °C): a difference of 0.5 °C. The warmest year of the series is 2007 (15.8 °C) and the coldest 1986 (13.8 °C). The last complete year, 2025, ranks 3 out of 55, from warmest to coldest. Over 1971–2025, the annual mean temperature changes by +0.21 °C per decade. The station ranks 91 out of 227 stations, from the fastest rise to the slowest.
Annual mean temperature since 1971
The first ten years of the series (1971–1980) average 14.4 °C; the last ten (2016–2025) average 15.2 °C, a difference of +0.8 °C. All of the 10 warmest years in the series fall after 1999; the warmest is 2007 (15.8 °C). The ten-year running mean peaks at 15.3 °C (2019) and bottoms out at 14.3 °C (1992).
Annual rainfall since 1971
On average 536 mm of rain falls per year over the 55 documented years. The wettest year, 1978, received 821 mm; the driest, 1997, only 310 mm, which is 2.6 times less. The 1991–2020 normal (514 mm per year) is 51 mm (9.0 %) below the 1961–1990 one (565 mm). Over 1991–2020, November is on average the wettest month (60 mm) and July the driest (33 mm). Between 2006 and 2025, 8 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 | 19.6 °C | 20.6 °C | +1.0 °C | 44 mm | 39 mm | −5 mm |
| February | 20.2 °C | 20.5 °C | +0.3 °C | 42 mm | 41 mm | −1 mm |
| March | 18.4 °C | 18.6 °C | +0.2 °C | 37 mm | 38 mm | +1 mm |
| April | 15.2 °C | 15.3 °C | +0.1 °C | 49 mm | 42 mm | −7 mm |
| May | 12.4 °C | 12.5 °C | +0.1 °C | 49 mm | 34 mm | −15 mm |
| June | 9.5 °C | 10.2 °C | +0.7 °C | 38 mm | 42 mm | +4 mm |
| July | 8.9 °C | 9.6 °C | +0.7 °C | 39 mm | 33 mm | −6 mm |
| August | 9.9 °C | 10.3 °C | +0.4 °C | 51 mm | 39 mm | −12 mm |
| September | 11.6 °C | 12.2 °C | +0.6 °C | 46 mm | 46 mm | 0 mm |
| October | 13.6 °C | 14.3 °C | +0.7 °C | 59 mm | 48 mm | −11 mm |
| November | 15.9 °C | 16.6 °C | +0.7 °C | 63 mm | 60 mm | −3 mm |
| December | 18.1 °C | 18.5 °C | +0.4 °C | 48 mm | 52 mm | +4 mm |
The largest temperature change is in January (+1.0 °C) and the smallest in May (+0.1 °C); over the year the mean difference is +0.5 °C, and 12 months out of twelve are warmer than before. For rainfall, the largest difference is in June (+4 mm) and the smallest in May (−15 mm).
Records at Melbourne Airport
- Warmest year: 15.8 °C, in 2007
- Coldest year: 13.8 °C, in 1986
- Driest year: 310 mm, in 1997
- Wettest year: 821 mm, in 1978
- Warmest month: 23.6 °C, in February 1997
- Coldest month: 7.8 °C, in July 1982
- Wettest month: 201 mm, in February 2005
- Hottest day: 46.8 °C, on 7 February 2009
- Coldest day: −2.5 °C, on 21 July 1982
- Heaviest rain in one day: 138.8 mm, on 3 February 2005
2.0 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 49.3 °C.
Temperature trend over 1971–2025
The regression line of annual mean temperature changes by +0.21 °C per decade between 1971 and 2025, about +1.1 °C over the whole period. That is faster than the median of the 227 stations (+0.19 °C per decade), by 0.02 °C per decade: the station ranks 91 out of 227.
The last 24 months against the 1991–2020 normal
Over the last 24 months (October 2024 to September 2026), 20 months out of 24 were warmer than the 1991–2020 normal for the same month; the mean departure is +0.9 °C. The highest departure was in April 2025 (+2.5 °C); the lowest, in November 2025 (−1.1 °C). The last twelve months add up to 539 mm of rain, which is 105 % of the 1991–2020 annual normal (514 mm).
| Month | Temperature | Departure from normal | Rain | Normal rain |
|---|---|---|---|---|
| October 2024 | 15.3 °C | +1.0 °C | 59 mm | 48 mm |
| November 2024 | 18.6 °C | +2.0 °C | 44 mm | 60 mm |
| December 2024 | 20.6 °C | +2.1 °C | 25 mm | 52 mm |
| January 2025 | 21.4 °C | +0.8 °C | 42 mm | 39 mm |
| February 2025 | 22.2 °C | +1.7 °C | 21 mm | 41 mm |
| March 2025 | 20.7 °C | +2.1 °C | 24 mm | 38 mm |
| April 2025 | 17.8 °C | +2.5 °C | 37 mm | 42 mm |
| May 2025 | 13.2 °C | +0.7 °C | 24 mm | 34 mm |
| June 2025 | 10.0 °C | −0.2 °C | 39 mm | 42 mm |
| July 2025 | 10.2 °C | +0.6 °C | 29 mm | 33 mm |
| August 2025 | 10.1 °C | −0.2 °C | 36 mm | 39 mm |
| September 2025 | 13.2 °C | +1.0 °C | 16 mm | 46 mm |
| October 2025 | 14.8 °C | +0.5 °C | 43 mm | 48 mm |
| November 2025 | 15.5 °C | −1.1 °C | 119 mm | 60 mm |
| December 2025 | 18.1 °C | −0.4 °C | 32 mm | 52 mm |
| January 2026 | 21.9 °C | +1.3 °C | 1 mm | 39 mm |
| February 2026 | 20.7 °C | +0.2 °C | 47 mm | 41 mm |
| March 2026 | 19.0 °C | +0.4 °C | 59 mm | 38 mm |
| April 2026 | 16.3 °C | +1.0 °C | 35 mm | 42 mm |
| May 2026 | 13.9 °C | +1.4 °C | 57 mm | 34 mm |
| June 2026 | 11.8 °C | +1.6 °C | 39 mm | 42 mm |
| July 2026 | 10.0 °C | +0.4 °C | 35 mm | 33 mm |
| August 2026 | 11.3 °C | +1.0 °C | 63 mm | 39 mm |
| September 2026 | 13.7 °C | +1.5 °C | 9 mm | 46 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 Melbourne Airport 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 Melbourne Airport?
Over 1991–2020, the annual mean temperature at Melbourne Airport is 14.9 °C. It was 14.4 °C over 1961–1990, a difference of +0.5 °C.
What is the warmest year ever measured at Melbourne Airport?
Since records began in 1971, the warmest year at Melbourne Airport is 2007, at 15.8 °C on average. The coldest is 1986 (13.8 °C).
Is the climate at Melbourne Airport getting warmer?
Yes: at Melbourne Airport, the annual mean temperature rises by 0.21 °C per decade between 1971 and 2025, +1.1 °C in total. 10 of the 10 warmest years in the series fall after 1999.
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