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Climate statistics for Australian locations
Monthly climate statistics
All years of record
PORTSEA QUARANTINE STATION
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: PORTSEA QUARANTINE STATION | Site number: 086097 | Commenced: 1904 | Map | |
| Latitude: 38.32° S | Longitude: 144.67° E | Elevation: 6 m | Operational status: Closed 31 Dec 1978 | |
| 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) | 22.8 | 22.9 | 21.5 | 18.5 | 15.8 | 13.4 | 12.8 | 13.7 | 15.3 | 17.3 | 19.2 | 21.2 | 17.9 | 46 | 1904 1978 |
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| Highest temperature (°C) | 40.4 | 38.6 | 35.6 | 29.4 | 24.4 | 18.3 | 20.0 | 20.6 | 23.6 | 32.5 | 32.1 | 36.0 | 40.4 | 13 | 1965 1978 |
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| Date | 31 Jan 1968 | 07 Feb 1967 | 07 Mar 1966 | 08 Apr 1969 | 01 May 1972 | 06 Jun 1965 | 30 Jul 1975 | 29 Aug 1972 | 26 Sep 1965 | 27 Oct 1977 | 13 Nov 1967 | 11 Dec 1975 | 31 Jan 1968 | ||||
| Lowest maximum temperature (°C) | 15.0 | 15.8 | 14.5 | 12.2 | 7.5 | 8.3 | 8.3 | 9.2 | 8.7 | 11.3 | 12.2 | 14.0 | 7.5 | 13 | 1965 1978 |
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| Date | 29 Jan 1978 | 09 Feb 1965 | 31 Mar 1973 | 28 Apr 1966 | 31 May 1977 | 06 Jun 1969 | 27 Jul 1965 | 11 Aug 1966 | 11 Sep 1969 | 01 Oct 1968 | 02 Nov 1966 | 24 Dec 1974 | 31 May 1977 | ||||
| Decile 1 maximum temperature (°C) | 18.3 | 19.0 | 17.8 | 15.6 | 13.3 | 11.7 | 11.0 | 11.5 | 12.1 | 14.0 | 15.3 | 16.5 | 12 | 1965 1978 |
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| Decile 9 maximum temperature(°C) | 30.0 | 30.0 | 27.0 | 22.4 | 19.0 | 15.5 | 15.5 | 16.1 | 18.5 | 21.5 | 24.0 | 27.9 | 12 | 1965 1978 |
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| Mean number of days ≥ 30 °C | 3.1 | 2.9 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.3 | 1.2 | 8.4 | 13 | 1965 1978 |
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| Mean number of days ≥ 35 °C | 0.4 | 0.3 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 1.2 | 13 | 1965 1978 |
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| Mean number of days ≥ 40 °C | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 13 | 1965 1978 |
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| Minimum temperature | |||||||||||||||||
| Mean minimum temperature (°C) | 13.3 | 13.9 | 13.0 | 11.2 | 9.5 | 7.5 | 6.8 | 7.1 | 7.7 | 9.1 | 10.3 | 11.8 | 10.1 | 45 | 1904 1978 |
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| Lowest temperature (°C) | 7.5 | 7.5 | 6.0 | 5.0 | 3.0 | 1.5 | 0.5 | 0.0 | 0.3 | 0.8 | 3.0 | 4.7 | 0.0 | 13 | 1965 1978 |
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| Date | 01 Jan 1973 | 18 Feb 1970 | 22 Mar 1969 | 03 Apr 1978 | 31 May 1977 | 10 Jun 1975 | 27 Jul 1976 | 27 Aug 1976 | 26 Sep 1970 | 01 Oct 1970 | 07 Nov 1976 | 26 Dec 1969 | 27 Aug 1976 | ||||
| Highest minimum temperature (°C) | 21.9 | 21.7 | 20.5 | 18.3 | 16.0 | 14.0 | 13.0 | 12.2 | 16.0 | 16.0 | 18.0 | 20.0 | 21.9 | 13 | 1965 1978 |
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| Date | 08 Jan 1971 | 19 Feb 1968 | 11 Mar 1969 | 10 Apr 1969 | 07 May 1975 | 01 Jun 1973 | 28 Jul 1975 | 28 Aug 1969 | 30 Sep 1973 | 28 Oct 1977 | 20 Nov 1975 | 23 Dec 1965 | 08 Jan 1971 | ||||
| Decile 1 minimum temperature (°C) | 10.3 | 11.1 | 10.0 | 8.3 | 6.5 | 3.6 | 4.2 | 4.5 | 4.6 | 6.1 | 7.0 | 9.0 | 12 | 1965 1978 |
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| Decile 9 minimum temperature (°C) | 17.0 | 18.2 | 17.0 | 15.0 | 12.5 | 10.5 | 10.0 | 10.0 | 11.0 | 13.0 | 13.6 | 15.0 | 12 | 1965 1978 |
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| Mean number of days ≤ 2 °C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.8 | 1.2 | 0.8 | 0.3 | 0.1 | 0.0 | 0.0 | 3.2 | 13 | 1965 1978 |
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| Mean number of days ≤ 0 °C | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 13 | 1965 1978 |
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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) | 33.1 | 50.1 | 52.1 | 57.1 | 68.0 | 60.5 | 64.0 | 61.3 | 63.0 | 63.5 | 58.8 | 50.1 | 683.1 | 60 | 1904 1978 |
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| Highest rainfall (mm) | 89.4 | 227.4 | 172.4 | 149.2 | 158.4 | 151.8 | 137.0 | 151.9 | 151.6 | 164.5 | 154.6 | 137.5 | 1063.0 | 60 | 1904 1978 |
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| Date | 1924 | 1973 | 1924 | 1935 | 1960 | 1977 | 1952 | 1939 | 1976 | 1949 | 1934 | 1907 | 1924 | ||||
| Lowest rainfall (mm) | 3.3 | 2.6 | 5.2 | 14.2 | 13.2 | 16.2 | 5.4 | 9.2 | 20.9 | 9.2 | 15.8 | 5.3 | 426.3 | 60 | 1904 1978 |
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| Date | 1939 | 1956 | 1951 | 1925 | 1934 | 1907 | 1913 | 1940 | 1972 | 1967 | 1932 | 1972 | 1967 | ||||
| Decile 1 rainfall (mm) | 7.1 | 9.0 | 16.9 | 21.7 | 29.9 | 26.0 | 34.0 | 24.9 | 31.5 | 27.3 | 23.0 | 13.1 | 61 | n/a n/a |
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| Decile 5 (median) rainfall (mm) | 28.6 | 38.8 | 38.2 | 46.5 | 63.8 | 54.2 | 63.2 | 56.9 | 57.6 | 61.8 | 54.7 | 48.8 | 61 | n/a n/a |
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| Decile 9 rainfall (mm) | 60.7 | 111.1 | 103.7 | 102.8 | 111.0 | 97.2 | 103.6 | 96.3 | 104.2 | 102.2 | 99.1 | 85.2 | 61 | n/a n/a |
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| Highest daily rainfall (mm) | 52.3 | 79.5 | 94.5 | 62.6 | 41.1 | 38.1 | 35.1 | 51.6 | 44.0 | 40.9 | 40.6 | 66.0 | 94.5 | 57 | 1904 1978 |
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| Date | 06 Jan 1907 | 06 Feb 1973 | 28 Mar 1924 | 30 Apr 1974 | 14 May 1945 | 01 Jun 1939 | 01 Jul 1946 | 26 Aug 1924 | 22 Sep 1976 | 02 Oct 1952 | 14 Nov 1950 | 27 Dec 1907 | 28 Mar 1924 | ||||
| Mean number of days of rain | 6.8 | 7.5 | 9.2 | 12.2 | 15.2 | 14.9 | 16.7 | 16.8 | 14.7 | 13.5 | 12.0 | 9.6 | 149.1 | 58 | 1904 1978 |
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| Mean number of days of rain ≥ 1 mm | 3.6 | 3.8 | 5.1 | 7.0 | 9.3 | 9.3 | 9.6 | 9.7 | 8.6 | 8.4 | 6.9 | 5.2 | 86.5 | 57 | 1904 1978 |
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| Mean number of days of rain ≥ 10 mm | 0.7 | 1.1 | 1.1 | 1.4 | 1.5 | 1.2 | 1.3 | 1.0 | 1.3 | 1.4 | 1.5 | 1.0 | 14.5 | 57 | 1904 1978 |
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| Mean number of days of rain ≥ 25 mm | 0.2 | 0.3 | 0.3 | 0.3 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.3 | 0.2 | 2.4 | 57 | 1904 1978 |
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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) | |
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| Maximum wind gust speed (km/h) | |
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| Mean daily sunshine (hours) | |
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| Mean daily solar exposure (MJ/m2) | 24.5 | 21.0 | 15.7 | 10.9 | 7.9 | 6.6 | 7.4 | 9.9 | 13.9 | 18.2 | 21.0 | 24.2 | 15.1 | 18 | 2007 2025 |
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| Mean number of clear days | 10.1 | 9.9 | 6.5 | 4.3 | 3.1 | 4.8 | 4.4 | 3.5 | 4.9 | 5.9 | 5.3 | 7.4 | 70.1 | 10 | 1967 1978 |
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| Mean number of cloudy days | 7.1 | 6.3 | 8.7 | 11.4 | 15.8 | 12.5 | 12.9 | 11.8 | 11.1 | 11.0 | 8.7 | 8.6 | 125.9 | 10 | 1967 1978 |
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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) | 17.6 | 18.0 | 16.9 | 14.5 | 12.5 | 10.2 | 9.5 | 10.0 | 11.5 | 13.3 | 14.7 | 16.3 | 13.8 | 42 | 1924 1978 |
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| Mean 9am wet-bulb temperature (°C) | 15.2 | 16.0 | 15.1 | 13.0 | 11.4 | 9.2 | 8.5 | 9.0 | 10.1 | 11.6 | 12.9 | 14.2 | 12.2 | 40 | 1924 1978 |
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| Mean 9am dew-point temperature (°C) | 0 | 1966 1966 |
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| Mean 9am relative humidity (%) | 0 | 1966 1966 |
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| Mean 9am cloud cover (oktas) | 4.5 | 4.2 | 4.9 | 5.0 | 5.5 | 4.9 | 5.2 | 4.9 | 4.6 | 4.7 | 4.8 | 4.7 | 4.8 | 13 | 1965 1978 |
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| Mean 9am wind speed (km/h) | 14.3 | 13.3 | 14.3 | 16.4 | 15.6 | 16.4 | 17.4 | 16.3 | 18.5 | 15.4 | 17.2 | 15.9 | 15.9 | 11 | 1965 1978 |
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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) | 21.4 | 22.0 | 20.2 | 18.2 | 15.2 | 13.0 | 12.5 | 13.1 | 14.2 | 16.0 | 17.8 | 19.6 | 16.9 | 10 | 1967 1978 |
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| Mean 3pm wet-bulb temperature (°C) | 9 | 1967 1978 |
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| Mean 3pm dew-point temperature (°C) | |
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| Mean 3pm relative humidity (%) | |
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| Mean 3pm cloud cover (oktas) | 3.1 | 3.0 | 4.1 | 4.6 | 5.3 | 5.1 | 4.9 | 4.6 | 4.8 | 4.4 | 4.1 | 3.6 | 4.3 | 10 | 1967 1978 |
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| Mean 3pm wind speed (km/h) | 19.5 | 17.2 | 17.2 | 17.2 | 16.4 | 15.8 | 17.8 | 18.4 | 18.8 | 17.6 | 19.5 | 19.7 | 17.9 | 10 | 1967 1978 |
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| 3pm wind speed vs direction plot | |
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red = highest value
blue = lowest value
Product IDCJCM0035 Prepared at Thu 18 Sep 2025 01:03:14 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_086097_All.shtml
- Summary statistics and locational map for this site:
http://www.bom.gov.au/climate/averages/tables/cw_086097.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/IDCJCM0035_086097.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
Climate outlooks
- Monthly and seasonal climate outlooks
Additional climate information
Page created: Thu 18 Sep 2025 01:03:14 AM AEST