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Climate statistics for Australian locations
Monthly climate statistics
All years of record
SWAN ISLAND
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: SWAN ISLAND | Site number: 092123 | Commenced: 2001 | Map | |
| Latitude: 40.73° S | Longitude: 148.13° E | Elevation: 15 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) | 21.2 | 21.3 | 20.6 | 18.3 | 16.0 | 14.1 | 13.3 | 13.6 | 14.7 | 16.1 | 17.8 | 19.5 | 17.2 | 24 | 2001 2026 |
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| Highest temperature (°C) | 31.9 | 30.3 | 29.7 | 24.5 | 21.6 | 18.0 | 17.6 | 18.1 | 21.4 | 23.0 | 29.7 | 28.4 | 31.9 | 24 | 2001 2026 |
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| Date | 29 Jan 2009 | 17 Feb 2023 | 14 Mar 2008 | 01 Apr 2014 | 02 May 2019 | 02 Jun 2011 | 18 Jul 2013 | 25 Aug 2004 | 28 Sep 2014 | 20 Oct 2011 | 21 Nov 2019 | 31 Dec 2009 | 29 Jan 2009 | ||||
| Lowest maximum temperature (°C) | 16.2 | 14.9 | 14.2 | 11.5 | 10.4 | 10.1 | 9.3 | 9.2 | 10.5 | 11.2 | 12.5 | 13.1 | 9.2 | 24 | 2001 2026 |
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| Date | 09 Jan 2015 | 08 Feb 2008 | 23 Mar 2012 | 26 Apr 2017 | 27 May 2016 | 21 Jun 2007 | 23 Jul 2016 | 08 Aug 2019 | 05 Sep 2017 | 06 Oct 2009 | 07 Nov 2004 | 03 Dec 2001 | 08 Aug 2019 | ||||
| Decile 1 maximum temperature (°C) | 18.4 | 18.8 | 18.1 | 16.0 | 13.8 | 12.2 | 11.8 | 12.0 | 13.0 | 13.9 | 15.4 | 16.9 | 23 | 2001 2025 |
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| Decile 9 maximum temperature(°C) | 23.9 | 23.8 | 23.3 | 20.7 | 18.0 | 15.9 | 14.7 | 15.1 | 16.7 | 18.2 | 20.5 | 22.2 | 23 | 2001 2025 |
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| Mean number of days ≥ 30 °C | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 24 | 2001 2026 |
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| Mean number of days ≥ 35 °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 | 24 | 2001 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 | 24 | 2001 2026 |
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| Minimum temperature | |||||||||||||||||
| Mean minimum temperature (°C) | 15.2 | 15.5 | 14.6 | 12.9 | 10.8 | 9.2 | 8.5 | 8.5 | 9.2 | 10.4 | 12.0 | 13.4 | 11.7 | 24 | 2001 2026 |
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| Lowest temperature (°C) | 8.6 | 8.7 | 6.8 | 6.1 | 4.3 | 2.8 | 3.1 | 2.2 | 3.1 | 3.8 | 4.6 | 6.7 | 2.2 | 24 | 2001 2026 |
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| Date | 02 Jan 2009 | 29 Feb 2008 | 24 Mar 2012 | 21 Apr 2021 | 27 May 2004 | 27 Jun 2010 | 18 Jul 2004 | 21 Aug 2013 | 12 Sep 2004 | 13 Oct 2025 | 16 Nov 2006 | 05 Dec 2012 | 21 Aug 2013 | ||||
| Highest minimum temperature (°C) | 20.6 | 20.1 | 20.3 | 18.8 | 17.6 | 15.2 | 13.4 | 13.1 | 13.7 | 15.3 | 16.9 | 18.8 | 20.6 | 24 | 2001 2026 |
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| Date | 28 Jan 2018 | 24 Feb 2016 | 16 Mar 2017 | 02 Apr 2014 | 06 May 2025 | 02 Jun 2014 | 19 Jul 2013 | 22 Aug 2025 | 16 Sep 2002 | 16 Oct 2018 | 26 Nov 2017 | 20 Dec 2015 | 28 Jan 2018 | ||||
| Decile 1 minimum temperature (°C) | 12.2 | 12.7 | 11.5 | 9.5 | 7.7 | 6.2 | 5.8 | 5.5 | 6.4 | 7.4 | 9.1 | 10.3 | 23 | 2001 2025 |
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| Decile 9 minimum temperature (°C) | 17.6 | 18.1 | 17.6 | 15.8 | 14.1 | 12.3 | 11.1 | 11.2 | 11.6 | 12.7 | 14.4 | 15.9 | 23 | 2001 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 | 24 | 2001 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 | 24 | 2001 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) | 40.8 | 38.9 | 53.2 | 45.2 | 52.8 | 57.4 | 62.6 | 55.6 | 50.5 | 50.8 | 56.0 | 43.4 | 605.7 | 23 | 2001 2026 |
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| Highest rainfall (mm) | 182.0 | 130.4 | 183.4 | 100.4 | 176.8 | 135.6 | 109.2 | 147.6 | 100.0 | 110.2 | 145.2 | 118.2 | 966.8 | 23 | 2001 2026 |
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| Date | 2004 | 2008 | 2011 | 2003 | 2007 | 2016 | 2014 | 2011 | 2005 | 2021 | 2011 | 2004 | 2016 | ||||
| Lowest rainfall (mm) | 0.8 | 5.0 | 10.0 | 13.6 | 13.0 | 16.2 | 0.0 | 0.0 | 0.0 | 5.4 | 5.8 | 4.4 | 415.8 | 23 | 2001 2026 |
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| Date | 2019 | 2003 | 2024 | 2018 | 2009 | 2006 | 2020 | 2020 | 2020 | 2015 | 2017 | 2005 | 2019 | ||||
| Decile 1 rainfall (mm) | 10.5 | 9.7 | 17.1 | 19.9 | 15.2 | 23.2 | 23.8 | 29.2 | 17.6 | 21.0 | 20.4 | 7.0 | 25 | n/a n/a |
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| Decile 5 (median) rainfall (mm) | 29.6 | 34.6 | 36.8 | 39.6 | 39.3 | 53.0 | 61.8 | 46.0 | 48.7 | 52.4 | 44.3 | 44.2 | 25 | n/a n/a |
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| Decile 9 rainfall (mm) | 66.9 | 74.0 | 107.1 | 78.0 | 98.3 | 92.7 | 97.0 | 95.2 | 90.7 | 89.0 | 107.9 | 79.2 | 25 | n/a n/a |
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| Highest daily rainfall (mm) | 47.0 | 73.2 | 121.2 | 53.6 | 51.2 | 40.2 | 56.2 | 41.0 | 29.8 | 34.8 | 80.4 | 62.4 | 121.2 | 23 | 2001 2026 |
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| Date | 30 Jan 2018 | 19 Feb 2020 | 24 Mar 2011 | 28 Apr 2003 | 19 May 2007 | 06 Jun 2016 | 06 Jul 2015 | 09 Aug 2011 | 07 Sep 2019 | 07 Oct 2010 | 27 Nov 2011 | 11 Dec 2004 | 24 Mar 2011 | ||||
| Mean number of days of rain | 7.5 | 8.0 | 9.2 | 12.6 | 14.4 | 16.5 | 17.3 | 16.4 | 13.4 | 11.9 | 11.3 | 9.3 | 147.8 | 23 | 2001 2026 |
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| Mean number of days of rain ≥ 1 mm | 4.4 | 4.5 | 5.1 | 7.0 | 8.5 | 8.8 | 10.0 | 8.4 | 8.0 | 7.2 | 7.3 | 5.2 | 84.4 | 23 | 2001 2026 |
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| Mean number of days of rain ≥ 10 mm | 1.0 | 1.0 | 1.5 | 1.3 | 1.5 | 1.6 | 1.6 | 1.5 | 1.4 | 1.3 | 1.7 | 1.2 | 16.6 | 23 | 2001 2026 |
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| Mean number of days of rain ≥ 25 mm | 0.3 | 0.3 | 0.4 | 0.1 | 0.4 | 0.2 | 0.2 | 0.1 | 0.3 | 0.1 | 0.3 | 0.4 | 3.1 | 23 | 2001 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) | 583 | 555 | 532 | 531 | 542 | 561 | 566 | 583 | 618 | 590 | 552 | 602 | 568 | 21 | 2001 2025 |
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| Maximum wind gust speed (km/h) | 93 | 107 | 106 | 120 | 118 | 144 | 118 | 120 | 124 | 109 | 104 | 113 | 144 | 24 | 2001 2025 |
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| Date | 14 Jan 2017 | 14 Feb 2018 | 22 Mar 2013 | 05 Apr 2020 | 20 May 2004 | 18 Jun 2010 | 31 Jul 2014 | 12 Aug 2017 | 02 Sep 2024 | 02 Oct 2013 | 08 Nov 2008 | 13 Dec 2008 | 18 Jun 2010 | ||||
| Mean daily sunshine (hours) | |
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| Mean daily solar exposure (MJ/m2) | 24.6 | 20.8 | 15.5 | 10.6 | 7.4 | 6.0 | 6.8 | 9.7 | 14.0 | 18.8 | 22.6 | 25.8 | 15.2 | 19 | 2007 2026 |
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| Mean number of clear days | 3 | 2001 2004 |
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| Mean number of cloudy days | 3 | 2001 2004 |
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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) | 9 | 2001 2010 |
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| Mean 9am wet-bulb temperature (°C) | 8 | 2001 2010 |
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| Mean 9am dew-point temperature (°C) | 9 | 2001 2010 |
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| Mean 9am relative humidity (%) | 9 | 2001 2010 |
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| Mean 9am cloud cover (oktas) | 3 | 2001 2004 |
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| Mean 9am wind speed (km/h) | 8 | 2001 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) | 9 | 2001 2010 |
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| Mean 3pm wet-bulb temperature (°C) | 8 | 2001 2010 |
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| Mean 3pm dew-point temperature (°C) | 9 | 2001 2010 |
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| Mean 3pm relative humidity (%) | 9 | 2001 2010 |
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| Mean 3pm cloud cover (oktas) | 3 | 2001 2009 |
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| Mean 3pm wind speed (km/h) | 8 | 2001 2010 |
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| 3pm wind speed vs direction plot | |
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red = highest value
blue = lowest value
Product IDCJCM0033 Prepared at Thu 26 Mar 2026 02:18:45 AM AEDT
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_092123_All.shtml
- Summary statistics and locational map for this site:
http://www.bom.gov.au/climate/averages/tables/cw_092123.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/IDCJCM0033_092123.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 Swan Island
Climate outlooks
- Monthly and seasonal climate outlooks
Additional climate information
Page created: Thu 26 Mar 2026 02:18:45 AM AEDT