Richmond (NSW) is a weather station located 19 m above sea level, 3 km from Richmond. Its records go back to 1943: 68 years of temperature are available up to 2024, along with rainfall and a comparison with two reference normals. Over 1991–2020 the annual mean temperature there is 17.9 °C, noticeably higher than over 1961–1990 (17.4 °C): a difference of 0.6 °C. The warmest year of the series is 2023 (18.8 °C) and the coldest 1943 (16.6 °C). The last complete year, 2024, ranks 1 out of 68, from warmest to coldest. Over 1961–2024, the annual mean temperature changes by +0.21 °C per decade. The station ranks 93 out of 227 stations, from the fastest rise to the slowest.
Annual mean temperature since 1943
The first ten years of the series (1943–1962) average 16.9 °C; the last ten (2015–2024) average 18.3 °C, a difference of +1.4 °C. Of the ten warmest years in the series, 8 fall after 1999. The warmest is 2023 (18.8 °C). The ten-year running mean peaks at 18.3 °C (2024) and bottoms out at 16.9 °C (1966).
Annual rainfall since 1943
On average 771 mm of rain falls per year over the 29 documented years. The wettest year, 2022, received 1498 mm; the driest, 2006, only 493 mm, which is 3.0 times less. Over 1991–2020, February is on average the wettest month (113 mm) and July the driest (31 mm). Between 2004 and 2024, 7 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 | 23.2 °C | 24.5 °C | +1.3 °C | – | 82 mm | – |
| February | 23.0 °C | 23.7 °C | +0.7 °C | – | 113 mm | – |
| March | 21.3 °C | 21.7 °C | +0.4 °C | – | 80 mm | – |
| April | 18.1 °C | 18.3 °C | +0.2 °C | – | 56 mm | – |
| May | 14.3 °C | 14.5 °C | +0.2 °C | – | 43 mm | – |
| June | 11.4 °C | 11.8 °C | +0.4 °C | – | 56 mm | – |
| July | 10.1 °C | 10.8 °C | +0.7 °C | – | 31 mm | – |
| August | 11.7 °C | 12.2 °C | +0.5 °C | – | 33 mm | – |
| September | 14.7 °C | 15.5 °C | +0.8 °C | – | 45 mm | – |
| October | 17.9 °C | 18.6 °C | +0.7 °C | – | 55 mm | – |
| November | 20.1 °C | 20.9 °C | +0.8 °C | – | 75 mm | – |
| December | 22.5 °C | 22.8 °C | +0.3 °C | – | 69 mm | – |
The largest temperature change is in January (+1.3 °C) and the smallest in April (+0.2 °C); over the year the mean difference is +0.6 °C, and 12 months out of twelve are warmer than before.
Records at Richmond (NSW)
- Warmest year: 18.8 °C, in 2023
- Coldest year: 16.6 °C, in 1943
- Driest year: 493 mm, in 2006
- Wettest year: 1498 mm, in 2022
- Warmest month: 27.4 °C, in January 2019
- Coldest month: 8.4 °C, in July 1971
- Wettest month: 591 mm, in March 2022
- Hottest day: 47.4 °C, on 4 January 2020
- Coldest day: −9.0 °C, on 16 July 1970
- Heaviest rain in one day: 181.4 mm, on 23 May 2025
2.2 °C separate the warmest year of the series from the coldest. Between the hottest and the coldest day on record, the range reaches 56.4 °C.
Temperature trend over 1961–2024
The regression line of annual mean temperature changes by +0.21 °C per decade between 1961 and 2024, about +1.3 °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 93 out of 227.
The last 24 months against the 1991–2020 normal
Over the last 22 months (October 2024 to September 2026), 10 months out of 12 were warmer than the 1991–2020 normal for the same month; the mean departure is +0.9 °C. The highest departure was in December 2024 (+2.3 °C); the lowest, in June 2025 (−1.1 °C). The last twelve months add up to 567 mm of rain, which is 77 % of the 1991–2020 annual normal (738 mm).
| Month | Temperature | Departure from normal | Rain | Normal rain |
|---|---|---|---|---|
| October 2024 | 18.6 °C | 0.0 °C | 2 mm | 55 mm |
| November 2024 | 22.6 °C | +1.7 °C | 58 mm | 75 mm |
| December 2024 | 25.1 °C | +2.3 °C | 25 mm | 69 mm |
| February 2025 | 24.1 °C | +0.4 °C | 58 mm | 113 mm |
| March 2025 | – | – | 86 mm | 80 mm |
| April 2025 | 19.6 °C | +1.3 °C | – | 56 mm |
| June 2025 | 10.7 °C | −1.1 °C | 3 mm | 56 mm |
| July 2025 | 11.4 °C | +0.6 °C | 69 mm | 31 mm |
| August 2025 | 13.0 °C | +0.8 °C | 167 mm | 33 mm |
| September 2025 | 16.6 °C | +1.1 °C | 55 mm | 45 mm |
| October 2025 | 20.7 °C | +2.1 °C | 12 mm | 55 mm |
| November 2025 | 22.0 °C | +1.1 °C | 47 mm | 75 mm |
| December 2025 | 23.4 °C | +0.6 °C | 61 mm | 69 mm |
| January 2026 | – | – | 103 mm | 82 mm |
| February 2026 | – | – | 109 mm | 113 mm |
| March 2026 | – | – | 67 mm | 80 mm |
| April 2026 | – | – | 8 mm | 56 mm |
| May 2026 | – | – | 98 mm | 43 mm |
| June 2026 | – | – | 12 mm | 56 mm |
| July 2026 | – | – | 17 mm | 31 mm |
| August 2026 | – | – | 27 mm | 33 mm |
| September 2026 | – | – | 6 mm | 45 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 Richmond (NSW) 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 Richmond (NSW)?
Over 1991–2020, the annual mean temperature at Richmond (NSW) is 17.9 °C. It was 17.4 °C over 1961–1990, a difference of +0.6 °C.
What is the warmest year ever measured at Richmond (NSW)?
Since records began in 1943, the warmest year at Richmond (NSW) is 2023, at 18.8 °C on average. The coldest is 1943 (16.6 °C).
Is the climate at Richmond (NSW) getting warmer?
Yes: at Richmond (NSW), the annual mean temperature rises by 0.21 °C per decade between 1961 and 2024, +1.3 °C in total. 8 of the 10 warmest years in the series fall after 1999.
Towns near this station
Neighbouring stations