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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 name: SWANBOURNE | Site number: 009215 | Commenced: 1985 | Map | |
Latitude: 31.96° S | Longitude: 115.76° E | Elevation: 41 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) | 29.9 | 30.4 | 28.8 | 25.3 | 22.2 | 19.4 | 18.5 | 18.9 | 20.0 | 22.3 | 25.4 | 28.1 | 24.1 | 32 | 1993 2025 |
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Highest temperature (°C) | 44.3 | 43.0 | 42.8 | 37.3 | 32.2 | 26.2 | 25.9 | 30.2 | 34.7 | 37.1 | 41.1 | 43.7 | 44.3 | 32 | 1993 2025 |
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Date | 11 Jan 2014 | 18 Feb 2024 | 07 Mar 2007 | 11 Apr 2020 | 09 May 2025 | 12 Jun 2000 | 21 Jul 1994 | 28 Aug 2019 | 27 Sep 2023 | 17 Oct 2009 | 11 Nov 2003 | 26 Dec 2021 | 11 Jan 2014 | ||||
Lowest maximum temperature (°C) | 19.5 | 17.1 | 18.4 | 16.6 | 13.2 | 12.5 | 12.2 | 11.6 | 13.2 | 15.8 | 16.0 | 19.3 | 11.6 | 32 | 1993 2025 |
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Date | 30 Jan 2017 | 09 Feb 2017 | 31 Mar 2008 | 19 Apr 2019 | 31 May 2004 | 23 Jun 2009 | 26 Jul 1998 | 03 Aug 2020 | 03 Sep 1999 | 07 Oct 2017 | 08 Nov 1995 | 01 Dec 1998 | 03 Aug 2020 | ||||
Decile 1 maximum temperature (°C) | 24.7 | 24.6 | 23.8 | 21.4 | 18.8 | 16.7 | 16.0 | 16.4 | 17.2 | 18.7 | 20.8 | 22.7 | 32 | 1993 2025 |
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Decile 9 maximum temperature(°C) | 36.9 | 37.3 | 34.6 | 30.3 | 25.8 | 22.2 | 20.9 | 21.6 | 23.6 | 27.7 | 31.8 | 35.8 | 32 | 1993 2025 |
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Mean number of days ≥ 30 °C | 13.4 | 13.9 | 11.3 | 3.2 | 0.3 | 0.0 | 0.0 | 0.0 | 0.2 | 1.9 | 4.9 | 9.6 | 58.7 | 32 | 1993 2025 |
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Mean number of days ≥ 35 °C | 5.2 | 5.5 | 2.8 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 1.4 | 3.9 | 19.4 | 32 | 1993 2025 |
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Mean number of days ≥ 40 °C | 0.8 | 0.7 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.4 | 2.3 | 32 | 1993 2025 |
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Minimum temperature | |||||||||||||||||
Mean minimum temperature (°C) | 18.4 | 18.8 | 17.6 | 15.3 | 12.6 | 10.7 | 10.0 | 10.2 | 11.1 | 12.5 | 14.8 | 16.8 | 14.1 | 32 | 1993 2025 |
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Lowest temperature (°C) | 9.9 | 11.0 | 7.5 | 7.5 | 4.8 | 2.9 | 2.4 | 3.1 | 3.1 | 5.0 | 7.1 | 5.7 | 2.4 | 32 | 1993 2025 |
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Date | 05 Jan 1999 | 20 Feb 2002 | 28 Mar 2007 | 20 Apr 2019 | 18 May 2019 | 25 Jun 2010 | 15 Jul 1997 | 29 Aug 2004 | 22 Sep 2008 | 11 Oct 1996 | 18 Nov 2004 | 10 Dec 1993 | 15 Jul 1997 | ||||
Highest minimum temperature (°C) | 28.4 | 28.7 | 28.8 | 23.9 | 20.2 | 17.1 | 16.0 | 17.3 | 19.0 | 21.1 | 25.6 | 27.2 | 28.8 | 32 | 1993 2025 |
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Date | 19 Jan 2022 | 19 Feb 2024 | 12 Mar 2010 | 14 Apr 1999 | 01 May 2003 | 20 Jun 2015 | 27 Jul 2020 | 07 Aug 2013 | 10 Sep 2015 | 17 Oct 2023 | 23 Nov 2023 | 27 Dec 2021 | 12 Mar 2010 | ||||
Decile 1 minimum temperature (°C) | 14.9 | 15.0 | 13.7 | 11.6 | 9.0 | 7.1 | 6.0 | 6.7 | 7.7 | 8.8 | 11.2 | 13.1 | 32 | 1993 2025 |
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Decile 9 minimum temperature (°C) | 22.2 | 22.5 | 21.3 | 19.0 | 16.5 | 14.2 | 13.7 | 14.0 | 14.7 | 16.2 | 18.2 | 20.9 | 32 | 1993 2025 |
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Mean number of days ≤ 2 °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 | 32 | 1993 2025 |
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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 | 32 | 1993 2025 |
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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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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) | 16.8 | 11.8 | 21.0 | 38.0 | 86.5 | 129.8 | 153.8 | 119.9 | 76.8 | 43.1 | 21.3 | 9.6 | 731.6 | 31 | 1993 2025 |
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Highest rainfall (mm) | 145.8 | 141.8 | 82.4 | 146.4 | 211.6 | 259.8 | 285.4 | 220.8 | 160.8 | 129.4 | 77.0 | 67.0 | 951.8 | 31 | 1993 2025 |
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Date | 2018 | 2017 | 1997 | 2008 | 2005 | 2023 | 2021 | 2025 | 2013 | 2021 | 2008 | 2011 | 2021 | ||||
Lowest rainfall (mm) | 0.0 | 0.0 | 0.0 | 0.4 | 15.2 | 23.2 | 42.0 | 31.0 | 18.0 | 5.0 | 1.0 | 0.0 | 497.8 | 31 | 1993 2025 |
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Date | 2022 | 2023 | 2024 | 2017 | 2019 | 2006 | 2012 | 2008 | 2019 | 2023 | 1999 | 2023 | 2006 | ||||
Decile 1 rainfall (mm) | 0.0 | 0.2 | 0.9 | 8.2 | 41.4 | 58.1 | 95.8 | 67.8 | 35.2 | 17.4 | 3.6 | 0.0 | 32 | n/a n/a |
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Decile 5 (median) rainfall (mm) | 1.8 | 1.5 | 13.6 | 32.8 | 85.0 | 126.2 | 153.8 | 120.8 | 79.6 | 34.8 | 19.4 | 3.7 | 32 | n/a n/a |
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Decile 9 rainfall (mm) | 46.2 | 23.7 | 49.5 | 81.2 | 135.2 | 210.8 | 208.0 | 155.6 | 104.2 | 75.2 | 44.2 | 21.2 | 32 | n/a n/a |
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Highest daily rainfall (mm) | 138.6 | 97.4 | 51.8 | 64.0 | 62.2 | 76.0 | 75.0 | 82.0 | 45.0 | 76.0 | 31.4 | 30.2 | 138.6 | 32 | 1993 2025 |
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Date | 16 Jan 2018 | 10 Feb 2017 | 30 Mar 1997 | 17 Apr 2002 | 19 May 2005 | 05 Jun 2023 | 30 Jul 2001 | 04 Aug 1994 | 11 Sep 1994 | 18 Oct 1995 | 02 Nov 2015 | 12 Dec 2012 | 16 Jan 2018 | ||||
Mean number of days of rain | 2.5 | 2.1 | 4.1 | 7.4 | 11.4 | 16.7 | 18.9 | 17.4 | 14.8 | 9.0 | 5.4 | 3.3 | 113.0 | 31 | 1993 2025 |
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Mean number of days of rain ≥ 1 mm | 1.2 | 0.9 | 2.5 | 4.7 | 8.8 | 12.3 | 15.5 | 13.2 | 10.8 | 5.9 | 3.5 | 1.8 | 81.1 | 32 | 1993 2025 |
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Mean number of days of rain ≥ 10 mm | 0.4 | 0.3 | 0.6 | 1.3 | 3.0 | 4.6 | 5.7 | 4.3 | 2.4 | 1.2 | 0.8 | 0.3 | 24.9 | 32 | 1993 2025 |
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Mean number of days of rain ≥ 25 mm | 0.2 | 0.1 | 0.3 | 0.3 | 0.8 | 1.1 | 1.0 | 0.8 | 0.5 | 0.3 | 0.1 | 0.1 | 5.6 | 32 | 1993 2025 |
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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) | 429 | 400 | 375 | 331 | 329 | 351 | 371 | 375 | 397 | 382 | 413 | 426 | 382 | 20 | 2003 2025 |
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Maximum wind gust speed (km/h) | 68 | 70 | 76 | 98 | 113 | 107 | 102 | 106 | 96 | 98 | 93 | 83 | 113 | 22 | 2003 2025 |
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Date | 31 Jan 2016 | 02 Feb 2010 | 31 Mar 2008 | 11 Apr 2003 | 16 May 2005 | 12 Jun 2012 | 07 Jul 2004 | 23 Aug 2004 | 19 Sep 2020 | 04 Oct 2019 | 28 Nov 2012 | 27 Dec 2004 | 16 May 2005 | ||||
Mean daily sunshine (hours) | |
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Mean daily solar exposure (MJ/m2) | 29.0 | 25.7 | 20.8 | 15.2 | 11.2 | 9.4 | 10.0 | 13.2 | 17.4 | 22.8 | 26.9 | 29.8 | 19.3 | 35 | 1990 2025 |
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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) | 23.8 | 23.9 | 22.1 | 19.5 | 16.4 | 13.7 | 12.9 | 13.6 | 15.6 | 17.8 | 20.8 | 22.7 | 18.6 | 17 | 1993 2010 |
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Mean 9am wet-bulb temperature (°C) | 17.8 | 18.0 | 16.9 | 15.7 | 13.2 | 12.0 | 10.9 | 11.6 | 13.0 | 13.7 | 15.8 | 16.1 | 14.6 | 12 | 1993 2010 |
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Mean 9am dew-point temperature (°C) | 12.9 | 13.7 | 12.9 | 12.3 | 10.9 | 9.4 | 8.7 | 9.1 | 9.6 | 10.0 | 11.2 | 11.7 | 11.0 | 16 | 1993 2010 |
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Mean 9am relative humidity (%) | 53 | 55 | 58 | 65 | 72 | 77 | 78 | 76 | 69 | 62 | 57 | 53 | 65 | 16 | 1993 2010 |
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Mean 9am cloud cover (oktas) | 0 | 1997 1997 |
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Mean 9am wind speed (km/h) | 19.5 | 19.7 | 19.3 | 17.3 | 18.0 | 19.6 | 20.0 | 18.5 | 19.5 | 19.1 | 19.5 | 19.8 | 19.2 | 17 | 1993 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) | 26.3 | 27.2 | 26.3 | 23.3 | 20.8 | 18.0 | 17.0 | 17.3 | 18.1 | 19.9 | 22.4 | 24.9 | 21.8 | 17 | 1993 2010 |
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Mean 3pm wet-bulb temperature (°C) | 20.1 | 20.5 | 19.5 | 17.8 | 15.5 | 14.2 | 13.2 | 13.6 | 14.4 | 15.4 | 17.2 | 18.4 | 16.7 | 13 | 1993 2010 |
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Mean 3pm dew-point temperature (°C) | 15.8 | 16.0 | 14.6 | 13.5 | 11.8 | 10.1 | 9.5 | 9.9 | 10.3 | 11.2 | 13.1 | 13.9 | 12.5 | 16 | 1993 2010 |
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Mean 3pm relative humidity (%) | 55 | 54 | 52 | 57 | 59 | 62 | 63 | 63 | 62 | 59 | 58 | 54 | 58 | 16 | 1993 2010 |
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Mean 3pm cloud cover (oktas) | |
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Mean 3pm wind speed (km/h) | 27.7 | 25.8 | 23.0 | 19.9 | 18.4 | 19.3 | 20.2 | 20.8 | 23.0 | 24.9 | 26.1 | 27.2 | 23.0 | 17 | 1993 2010 |
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3pm wind speed vs direction plot | ![]() |
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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.