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Climate statistics for Australian locations
Monthly climate statistics
All years of record
WILLIAMSON
An extended list of climate statistics recorded is provided below. There is also a summary table for printing with the commonly requested statistics and a map showing the location of this site. Monthly statistics are only included if there are more than 10 years of suitable data.
Note: Many statistics are updated quarterly and recent weather events may not be represented in the statistics below. For more current information on recent extreme values, please refer to the corresponding Daily rainfall, Maximum temperature and Minimum temperature data tables for this site, and our Australian Climate and Weather Extremes Monitoring System. Missing observations associated with the observer being unavailable (where observations are undertaken manually), a failure in the observing equipment, or when an event has produced suspect data may result in an extreme event not being recorded.Site details
| Site name: WILLIAMSON | Site number: 033195 | Commenced: 2005 | Map | |
| Latitude: 22.47° S | Longitude: 150.18° E | Elevation: 28 m | Operational status: Open | |
| Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
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| Temperature | |||||||||||||||||
| Maximum temperature | |||||||||||||||||
| Mean maximum temperature (°C) | 31.7 | 31.4 | 30.8 | 29.0 | 26.4 | 24.2 | 24.2 | 25.3 | 27.4 | 29.1 | 30.4 | 31.3 | 28.4 | 21 | 2005 2026 |
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| Highest temperature (°C) | 39.6 | 38.9 | 39.6 | 34.5 | 33.2 | 31.3 | 31.1 | 32.2 | 35.3 | 35.6 | 39.5 | 39.1 | 39.6 | 21 | 2005 2026 |
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| Date | 04 Jan 2022 | 22 Feb 2021 | 12 Mar 2007 | 13 Apr 2023 | 27 May 2016 | 29 Jun 2023 | 29 Jul 2021 | 14 Aug 2009 | 20 Sep 2013 | 08 Oct 2013 | 25 Nov 2018 | 02 Dec 2019 | 12 Mar 2007 | ||||
| Lowest maximum temperature (°C) | 24.4 | 24.7 | 22.0 | 21.7 | 13.6 | 11.4 | 14.8 | 16.1 | 21.2 | 20.1 | 23.0 | 23.7 | 11.4 | 21 | 2005 2026 |
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| Date | 15 Jan 2012 | 04 Feb 2018 | 29 Mar 2008 | 28 Apr 2011 | 23 May 2020 | 21 Jun 2007 | 03 Jul 2022 | 01 Aug 2025 | 05 Sep 2007 | 23 Oct 2016 | 04 Nov 2010 | 01 Dec 2022 | 21 Jun 2007 | ||||
| Decile 1 maximum temperature (°C) | 29.6 | 28.8 | 28.6 | 26.9 | 23.8 | 21.1 | 21.4 | 22.9 | 25.2 | 27.0 | 28.3 | 29.0 | 20 | 2005 2025 |
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| Decile 9 maximum temperature(°C) | 33.7 | 33.5 | 33.0 | 31.0 | 28.7 | 26.6 | 26.4 | 27.6 | 29.6 | 30.7 | 32.1 | 33.3 | 20 | 2005 2025 |
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| Mean number of days ≥ 30 °C | 26.3 | 21.5 | 21.7 | 8.3 | 0.6 | 0.0 | 0.1 | 0.2 | 2.5 | 7.9 | 18.7 | 25.0 | 132.8 | 21 | 2005 2026 |
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| Mean number of days ≥ 35 °C | 0.8 | 0.8 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.7 | 0.5 | 3.6 | 21 | 2005 2026 |
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| Mean number of days ≥ 40 °C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 21 | 2005 2026 |
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| Minimum temperature | |||||||||||||||||
| Mean minimum temperature (°C) | 23.0 | 22.9 | 21.8 | 18.4 | 14.3 | 11.5 | 10.0 | 10.5 | 14.0 | 17.6 | 20.2 | 22.0 | 17.2 | 21 | 2005 2026 |
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| Lowest temperature (°C) | 17.1 | 16.1 | 14.0 | 8.1 | 3.5 | -0.8 | -0.1 | -0.4 | 3.0 | 5.9 | 11.3 | 14.2 | -0.8 | 21 | 2005 2026 |
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| Date | 20 Jan 2018 | 03 Feb 2013 | 31 Mar 2008 | 29 Apr 2017 | 28 May 2023 | 19 Jun 2018 | 18 Jul 2024 | 21 Aug 2018 | 04 Sep 2014 | 03 Oct 2011 | 06 Nov 2019 | 06 Dec 2012 | 19 Jun 2018 | ||||
| Highest minimum temperature (°C) | 28.2 | 27.0 | 28.6 | 25.4 | 21.8 | 21.0 | 21.4 | 21.0 | 23.2 | 25.3 | 26.8 | 27.0 | 28.6 | 21 | 2005 2026 |
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| Date | 24 Jan 2024 | 02 Feb 2011 | 03 Mar 2022 | 03 Apr 2025 | 12 May 2022 | 10 Jun 2006 | 14 Jul 2012 | 24 Aug 2015 | 25 Sep 2016 | 27 Oct 2025 | 29 Nov 2025 | 14 Dec 2005 | 03 Mar 2022 | ||||
| Decile 1 minimum temperature (°C) | 20.3 | 20.8 | 18.8 | 14.8 | 8.1 | 5.2 | 3.4 | 5.3 | 9.5 | 12.5 | 16.0 | 19.2 | 20 | 2005 2025 |
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| Decile 9 minimum temperature (°C) | 25.3 | 25.0 | 24.3 | 21.8 | 18.5 | 17.2 | 16.0 | 15.6 | 18.8 | 21.7 | 23.6 | 25.0 | 20 | 2005 2025 |
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| Mean number of days ≤ 2 °C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.9 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 1.4 | 21 | 2005 2026 |
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| Mean number of days ≤ 0 °C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 21 | 2005 2026 |
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| Ground surface temperature | |||||||||||||||||
| Mean daily ground minimum temperature (°C) | |
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| Lowest ground temperature (°C) | |
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| Date | |||||||||||||||||
| Mean number of days ground min. temp. ≤ -1 °C | |
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| Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
| Rainfall | |||||||||||||||||
| Mean rainfall (mm) | 141.2 | 162.0 | 122.6 | 52.5 | 31.8 | 33.9 | 33.9 | 21.5 | 16.1 | 38.7 | 55.1 | 127.5 | 832.4 | 21 | 2005 2026 |
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| Highest rainfall (mm) | 415.8 | 598.0 | 480.2 | 164.8 | 102.8 | 164.6 | 150.4 | 105.8 | 87.2 | 117.6 | 163.2 | 592.0 | 1989.4 | 21 | 2005 2026 |
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| Date | 2013 | 2010 | 2017 | 2014 | 2022 | 2007 | 2016 | 2011 | 2010 | 2021 | 2021 | 2010 | 2010 | ||||
| Lowest rainfall (mm) | 13.2 | 7.0 | 18.6 | 0.2 | 2.2 | 1.8 | 0.0 | 0.2 | 0.0 | 0.2 | 2.6 | 4.0 | 304.6 | 21 | 2005 2026 |
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| Date | 2021 | 2017 | 2009 | 2008 | 2016 | 2022 | 2009 | 2018 | 2019 | 2014 | 2020 | 2019 | 2019 | ||||
| Decile 1 rainfall (mm) | 45.6 | 34.3 | 24.3 | 7.4 | 10.0 | 4.2 | 2.2 | 0.2 | 0.0 | 3.8 | 8.8 | 38.0 | 21 | n/a n/a |
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| Decile 5 (median) rainfall (mm) | 120.8 | 138.3 | 87.3 | 51.9 | 24.4 | 28.0 | 12.8 | 10.8 | 2.4 | 37.0 | 40.0 | 78.2 | 21 | n/a n/a |
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| Decile 9 rainfall (mm) | 233.6 | 256.0 | 236.4 | 88.1 | 66.2 | 66.6 | 102.0 | 47.6 | 60.8 | 84.6 | 121.8 | 182.0 | 21 | n/a n/a |
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| Highest daily rainfall (mm) | 208.0 | 138.2 | 136.2 | 74.2 | 36.6 | 68.4 | 66.6 | 80.2 | 42.6 | 52.2 | 59.6 | 129.6 | 208.0 | 20 | 2005 2026 |
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| Date | 25 Jan 2013 | 01 Feb 2010 | 30 Mar 2017 | 14 Apr 2014 | 11 May 2022 | 20 Jun 2016 | 16 Jul 2016 | 11 Aug 2010 | 06 Sep 2007 | 21 Oct 2005 | 30 Nov 2022 | 28 Dec 2010 | 25 Jan 2013 | ||||
| Mean number of days of rain | 12.4 | 14.3 | 13.3 | 9.6 | 9.3 | 8.5 | 6.8 | 4.1 | 4.0 | 5.0 | 7.1 | 9.8 | 104.2 | 21 | 2005 2026 |
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| Mean number of days of rain ≥ 1 mm | 8.5 | 10.1 | 8.7 | 5.4 | 4.7 | 4.4 | 3.0 | 1.9 | 1.8 | 3.1 | 4.8 | 6.8 | 63.2 | 20 | 2005 2026 |
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| Mean number of days of rain ≥ 10 mm | 3.3 | 4.3 | 3.1 | 1.6 | 0.9 | 1.1 | 1.0 | 0.7 | 0.5 | 1.1 | 1.6 | 3.0 | 22.2 | 20 | 2005 2026 |
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| Mean number of days of rain ≥ 25 mm | 1.5 | 1.9 | 1.4 | 0.6 | 0.1 | 0.1 | 0.3 | 0.2 | 0.1 | 0.4 | 0.6 | 1.5 | 8.7 | 20 | 2005 2026 |
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| Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
| Other daily elements | |||||||||||||||||
| Mean daily wind run (km) | 231 | 215 | 216 | 190 | 166 | 165 | 162 | 167 | 187 | 220 | 220 | 230 | 198 | 18 | 2005 2025 |
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| Maximum wind gust speed (km/h) | 80 | 106 | 94 | 67 | 72 | 65 | 59 | 55 | 63 | 63 | 65 | 76 | 106 | 20 | 2005 2025 |
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| Date | 17 Jan 2020 | 20 Feb 2015 | 29 Mar 2017 | 26 Apr 2022 | 29 May 2007 | 27 Jun 2006 | 08 Jul 2018 | 24 Aug 2022 | 21 Sep 2021 | 25 Oct 2020 | 16 Nov 2013 | 30 Dec 2023 | 20 Feb 2015 | ||||
| Mean daily sunshine (hours) | |
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| Mean daily solar exposure (MJ/m2) | 23.7 | 21.9 | 20.4 | 17.9 | 15.3 | 14.0 | 15.2 | 18.0 | 21.4 | 24.0 | 25.2 | 24.8 | 20.2 | 36 | 1990 2026 |
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| Mean number of clear days | |
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| Mean number of cloudy days | |
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| Mean daily evaporation (mm) | |
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| Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
| 9 am conditions | |||||||||||||||||
| Mean 9am temperature (°C) | 5 | 2005 2010 |
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| Mean 9am wet-bulb temperature (°C) | 4 | 2005 2010 |
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| Mean 9am dew-point temperature (°C) | 5 | 2005 2010 |
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| Mean 9am relative humidity (%) | 5 | 2005 2010 |
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| Mean 9am cloud cover (oktas) | |
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| Mean 9am wind speed (km/h) | 5 | 2005 2010 |
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| 9am wind speed vs direction plot | |
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| Statistics | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual | Years | Plot | Map | |
| 3 pm conditions | |||||||||||||||||
| Mean 3pm temperature (°C) | 5 | 2005 2010 |
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| Mean 3pm wet-bulb temperature (°C) | 4 | 2005 2010 |
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| Mean 3pm dew-point temperature (°C) | 5 | 2005 2010 |
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| Mean 3pm relative humidity (%) | 5 | 2005 2010 |
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| Mean 3pm cloud cover (oktas) | |
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| Mean 3pm wind speed (km/h) | 5 | 2005 2010 |
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| 3pm wind speed vs direction plot | |
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red = highest value
blue = lowest value
Product IDCJCM0036 Prepared at Thu 09 Apr 2026 01:31:03 AM AEST
Monthly statistics are only included if there are more than 10 years of data. The number of years (provided in the 2nd last column of the table) may differ between elements if the observing program at the site changed. More detailed data for individual sites can be obtained by contacting the Bureau.
Related Links
- This page URL: http://www.bom.gov.au/climate/averages/tables/cw_033195_All.shtml
- Summary statistics and locational map for this site:
http://www.bom.gov.au/climate/averages/tables/cw_033195.shtml - About climate averages: http://www.bom.gov.au/climate/cdo/about/about-stats.shtml
- Data file (csv): http://www.bom.gov.au/clim_data/cdio/tables/text/IDCJCM0036_033195.csv
- Climate averages home page URL: http://www.bom.gov.au/climate/data/index.shtml
- Bureau of Meteorology website: http://www.bom.gov.au
Related information
Maps
- Long term climatology maps for selected elements
- Rainfall maps and temperature maps based on recent observations
Recent observations for this site
- Daily Weather Observations from this site are included in the Daily Weather Observations Williamson
Climate outlooks
- Monthly and seasonal climate outlooks
Additional climate information
Page created: Thu 09 Apr 2026 01:31:03 AM AEST