Ayr Dpi Research Stn is a weather station located 10 m above sea level, 6 km from Home Hill. Its records go back to 1952: 44 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 23.9 °C; the 1961–1990 period is not documented well enough to compare. The warmest year of the series is 2016 (25.0 °C) and the coldest 1972 (22.7 °C). The last complete year, 2025, ranks 2 out of 44, from warmest to coldest. Over 1961–2025, the annual mean temperature changes by +0.18 °C per decade. The station ranks 130 out of 227 stations, from the fastest rise to the slowest.
Annual mean temperature since 1952
The first ten years of the series (1952–1963) average 23.3 °C; the last ten (2016–2025) average 24.4 °C, a difference of +1.1 °C. Of the ten warmest years in the series, 9 fall after 1999. The warmest is 2016 (25.0 °C). The ten-year running mean peaks at 24.4 °C (2025) and bottoms out at 23.2 °C (1963).
Annual rainfall since 1952
On average 936 mm of rain falls per year over the 64 documented years. The wettest year, 2010, received 1985 mm; the driest, 2001, only 147 mm, which is 13.5 times less. The 1991–2020 normal (831 mm per year) is 73 mm (8.1 %) below the 1961–1990 one (904 mm). Over 1991–2020, January is on average the wettest month (245 mm) and September the driest (9 mm). Between 2006 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 | – | 27.6 °C | – | 168 mm | 245 mm | +77 mm |
| February | – | 27.6 °C | – | 183 mm | 225 mm | +42 mm |
| March | – | 26.5 °C | – | 168 mm | 115 mm | −53 mm |
| April | – | 24.6 °C | – | 49 mm | 30 mm | −19 mm |
| May | – | 22.0 °C | – | 45 mm | 25 mm | −20 mm |
| June | – | 19.7 °C | – | 27 mm | 21 mm | −6 mm |
| July | – | 19.0 °C | – | 15 mm | 17 mm | +2 mm |
| August | 19.3 °C | 19.8 °C | +0.5 °C | 17 mm | 12 mm | −5 mm |
| September | – | 22.2 °C | – | 11 mm | 9 mm | −2 mm |
| October | – | 24.4 °C | – | 31 mm | 24 mm | −7 mm |
| November | – | 26.1 °C | – | 51 mm | 35 mm | −16 mm |
| December | – | 27.4 °C | – | 139 mm | 73 mm | −66 mm |
For rainfall, the largest difference is in January (+77 mm) and the smallest in December (−66 mm).
Records at Ayr Dpi Research Stn
- Warmest year: 25.0 °C, in 2016
- Coldest year: 22.7 °C, in 1972
- Driest year: 147 mm, in 2001
- Wettest year: 1985 mm, in 2010
- Warmest month: 29.7 °C, in February 2016
- Coldest month: 16.3 °C, in July 1972
- Wettest month: 880 mm, in February 2009
- Hottest day: 41.5 °C, on 21 December 1995
- Coldest day: 1.4 °C, on 15 July 1963
- Heaviest rain in one day: 327.8 mm, on 28 January 2020
2.3 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 40.1 °C.
Temperature trend over 1961–2025
The regression line of annual mean temperature changes by +0.18 °C per decade between 1961 and 2025, about +1.2 °C over the whole period. That is slower than the median of the 227 stations (+0.19 °C per decade), by 0.01 °C per decade: the station ranks 130 out of 227.
The last 24 months against the 1991–2020 normal
Over the last 24 months (October 2024 to September 2026), 18 months out of 24 were warmer than the 1991–2020 normal for the same month; the mean departure is +0.5 °C. The highest departure was in November 2025 (+2.1 °C); the lowest, in January 2026 (−0.7 °C). The last twelve months add up to 1124 mm of rain, which is 135 % of the 1991–2020 annual normal (831 mm).
| Month | Temperature | Departure from normal | Rain | Normal rain |
|---|---|---|---|---|
| October 2024 | 24.8 °C | +0.4 °C | 21 mm | 24 mm |
| November 2024 | 26.3 °C | +0.2 °C | 59 mm | 35 mm |
| December 2024 | 27.2 °C | −0.2 °C | 380 mm | 73 mm |
| January 2025 | 28.0 °C | +0.4 °C | 394 mm | 245 mm |
| February 2025 | 27.2 °C | −0.4 °C | 727 mm | 225 mm |
| March 2025 | 27.2 °C | +0.7 °C | 190 mm | 115 mm |
| April 2025 | 25.3 °C | +0.7 °C | 58 mm | 30 mm |
| May 2025 | 23.1 °C | +1.1 °C | 20 mm | 25 mm |
| June 2025 | 20.2 °C | +0.5 °C | 21 mm | 21 mm |
| July 2025 | 20.6 °C | +1.6 °C | 21 mm | 17 mm |
| August 2025 | 20.0 °C | +0.2 °C | 6 mm | 12 mm |
| September 2025 | 23.0 °C | +0.8 °C | 4 mm | 9 mm |
| October 2025 | 26.0 °C | +1.6 °C | 5 mm | 24 mm |
| November 2025 | 28.2 °C | +2.1 °C | 42 mm | 35 mm |
| December 2025 | 27.2 °C | −0.2 °C | 165 mm | 73 mm |
| January 2026 | 26.9 °C | −0.7 °C | 397 mm | 245 mm |
| February 2026 | 27.8 °C | +0.2 °C | 295 mm | 225 mm |
| March 2026 | 26.8 °C | +0.3 °C | 187 mm | 115 mm |
| April 2026 | 24.6 °C | 0.0 °C | 29 mm | 30 mm |
| May 2026 | 22.2 °C | +0.2 °C | 1 mm | 25 mm |
| June 2026 | 20.6 °C | +0.9 °C | 3 mm | 21 mm |
| July 2026 | 19.9 °C | +0.9 °C | 0 mm | 17 mm |
| August 2026 | 20.5 °C | +0.7 °C | 0 mm | 12 mm |
| September 2026 | 21.6 °C | −0.6 °C | 0 mm | 9 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 Ayr Dpi Research Stn 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 Ayr Dpi Research Stn?
Over 1991–2020, the annual mean temperature at Ayr Dpi Research Stn is 23.9 °C.
What is the warmest year ever measured at Ayr Dpi Research Stn?
Since records began in 1952, the warmest year at Ayr Dpi Research Stn is 2016, at 25.0 °C on average. The coldest is 1972 (22.7 °C).
Is the climate at Ayr Dpi Research Stn getting warmer?
Yes: at Ayr Dpi Research Stn, the annual mean temperature rises by 0.18 °C per decade between 1961 and 2025, +1.2 °C in total. 9 of the 10 warmest years in the series fall after 1999.
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