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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: CHRISTMAS ISLAND AERO | Site number: 200790 | Commenced: 1972 | Map | |
Latitude: 10.45° S | Longitude: 105.69° E | Elevation: 261 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) | 28.1 | 28.1 | 28.3 | 28.3 | 27.9 | 27.1 | 26.3 | 26.1 | 26.3 | 26.9 | 27.4 | 27.8 | 27.4 | 50 | 1972 2025 |
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Highest temperature (°C) | 31.4 | 31.5 | 31.5 | 31.4 | 30.7 | 29.8 | 29.3 | 29.5 | 30.9 | 31.4 | 31.8 | 31.5 | 31.8 | 51 | 1972 2025 |
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Date | 20 Jan 2019 | 24 Feb 1983 | 06 Mar 1983 | 11 Apr 1983 | 14 May 2022 | 14 Jun 2022 | 01 Jul 2016 | 19 Aug 1984 | 11 Sep 1981 | 18 Oct 1981 | 30 Nov 1981 | 27 Dec 2023 | 30 Nov 1981 | ||||
Lowest maximum temperature (°C) | 24.1 | 24.2 | 24.6 | 25.1 | 24.0 | 23.4 | 22.8 | 22.9 | 23.0 | 23.2 | 23.6 | 23.4 | 22.8 | 51 | 1972 2025 |
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Date | 11 Jan 2001 | 09 Feb 2008 | 22 Mar 2008 | 01 Apr 1975 | 28 May 1977 | 20 Jun 1976 | 31 Jul 1976 | 26 Aug 1992 | 06 Sep 2018 | 29 Oct 1975 | 27 Nov 2000 | 04 Dec 1981 | 31 Jul 1976 | ||||
Decile 1 maximum temperature (°C) | 26.6 | 26.5 | 27.0 | 27.3 | 26.8 | 25.9 | 25.2 | 25.1 | 25.1 | 25.8 | 26.1 | 26.5 | 45 | 1972 2024 |
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Decile 9 maximum temperature(°C) | 29.2 | 29.3 | 29.5 | 29.3 | 28.8 | 28.3 | 27.3 | 27.1 | 27.3 | 28.0 | 28.6 | 28.9 | 45 | 1972 2024 |
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Mean number of days ≥ 30 °C | 0.9 | 1.1 | 1.1 | 0.9 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.1 | 0.6 | 4.9 | 51 | 1972 2025 |
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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 | 51 | 1972 2025 |
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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 | 51 | 1972 2025 |
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Minimum temperature | |||||||||||||||||
Mean minimum temperature (°C) | 22.8 | 22.8 | 23.1 | 23.6 | 23.9 | 23.3 | 22.6 | 22.3 | 22.3 | 22.8 | 22.9 | 22.7 | 22.9 | 50 | 1972 2025 |
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Lowest temperature (°C) | 18.8 | 18.4 | 18.6 | 18.3 | 19.3 | 18.3 | 16.2 | 17.7 | 16.7 | 18.2 | 18.0 | 17.1 | 16.2 | 51 | 1972 2025 |
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Date | 27 Jan 1982 | 03 Feb 1989 | 15 Mar 1982 | 14 Apr 1978 | 13 May 1977 | 02 Jun 2004 | 11 Jul 1978 | 04 Aug 1997 | 14 Sep 1982 | 21 Oct 1986 | 11 Nov 1976 | 20 Dec 2018 | 11 Jul 1978 | ||||
Highest minimum temperature (°C) | 26.1 | 25.8 | 26.2 | 26.7 | 26.5 | 25.9 | 25.4 | 25.2 | 24.8 | 25.5 | 25.8 | 25.6 | 26.7 | 51 | 1972 2025 |
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Date | 08 Jan 2016 | 26 Feb 2019 | 11 Mar 2016 | 24 Apr 2020 | 01 May 2020 | 26 Jun 1988 | 06 Jul 2016 | 04 Aug 1998 | 21 Sep 1981 | 24 Oct 1981 | 29 Nov 2015 | 21 Dec 2019 | 24 Apr 2020 | ||||
Decile 1 minimum temperature (°C) | 21.3 | 21.3 | 21.6 | 22.0 | 22.2 | 21.8 | 21.3 | 21.1 | 21.2 | 21.7 | 21.6 | 20.8 | 44 | 1972 2024 |
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Decile 9 minimum temperature (°C) | 24.2 | 24.2 | 24.6 | 25.0 | 25.1 | 24.6 | 23.7 | 23.4 | 23.2 | 23.8 | 24.1 | 24.1 | 44 | 1972 2024 |
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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 | 51 | 1972 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 | 51 | 1972 2025 |
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Ground surface temperature | |||||||||||||||||
Mean daily ground minimum temperature (°C) | 7 | 1997 2004 |
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Lowest ground temperature (°C) | 7 | 1997 2004 |
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Date | |||||||||||||||||
Mean number of days ground min. temp. ≤ -1 °C | 7 | 1997 2004 |
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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) | 291.0 | 352.0 | 298.9 | 233.5 | 183.5 | 166.1 | 89.5 | 41.7 | 54.8 | 74.2 | 171.3 | 232.5 | 2185.2 | 51 | 1973 2025 |
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Highest rainfall (mm) | 704.6 | 811.1 | 696.8 | 570.1 | 528.6 | 708.4 | 628.2 | 163.8 | 702.4 | 754.4 | 611.0 | 758.6 | 5120.8 | 51 | 1973 2025 |
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Date | 2011 | 1975 | 2001 | 1991 | 1978 | 1978 | 1998 | 1978 | 2016 | 2016 | 2016 | 1989 | 2016 | ||||
Lowest rainfall (mm) | 24.2 | 59.6 | 36.4 | 18.6 | 14.1 | 6.8 | 4.0 | 1.4 | 0.0 | 0.0 | 0.4 | 12.0 | 1066.9 | 51 | 1973 2025 |
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Date | 2022 | 1993 | 1980 | 1988 | 2005 | 2024 | 1976 | 2012 | 2006 | 1994 | 2019 | 1997 | 1987 | ||||
Decile 1 rainfall (mm) | 113.1 | 115.6 | 117.4 | 53.8 | 49.3 | 15.6 | 10.4 | 6.0 | 1.5 | 0.4 | 6.1 | 39.6 | 52 | n/a n/a |
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Decile 5 (median) rainfall (mm) | 271.0 | 311.8 | 264.3 | 210.6 | 147.0 | 81.6 | 48.6 | 25.4 | 20.5 | 28.2 | 121.2 | 219.4 | 52 | n/a n/a |
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Decile 9 rainfall (mm) | 453.9 | 599.6 | 535.2 | 409.8 | 346.1 | 446.6 | 210.6 | 102.6 | 111.9 | 222.8 | 384.1 | 460.8 | 52 | n/a n/a |
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Highest daily rainfall (mm) | 145.0 | 186.2 | 173.2 | 183.8 | 171.6 | 140.0 | 155.6 | 57.1 | 138.8 | 195.8 | 212.6 | 141.2 | 212.6 | 50 | 1973 2025 |
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Date | 21 Jan 2011 | 12 Feb 2001 | 20 Mar 2001 | 21 Apr 2024 | 15 May 2004 | 12 Jun 1998 | 31 Jul 1978 | 14 Aug 1993 | 26 Sep 2016 | 13 Oct 2016 | 29 Nov 2017 | 31 Dec 1998 | 29 Nov 2017 | ||||
Mean number of days of rain | 19.1 | 20.3 | 21.6 | 18.5 | 16.5 | 13.9 | 12.2 | 10.1 | 8.5 | 8.3 | 12.1 | 15.9 | 177.0 | 51 | 1973 2025 |
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Mean number of days of rain ≥ 1 mm | 15.2 | 16.6 | 17.5 | 14.0 | 11.5 | 10.2 | 7.9 | 6.2 | 4.9 | 5.0 | 8.6 | 11.8 | 129.4 | 50 | 1973 2025 |
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Mean number of days of rain ≥ 10 mm | 8.4 | 9.3 | 8.4 | 6.1 | 4.7 | 4.0 | 2.3 | 1.2 | 1.2 | 1.7 | 3.9 | 5.8 | 57.0 | 50 | 1973 2025 |
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Mean number of days of rain ≥ 25 mm | 3.7 | 4.3 | 3.6 | 2.7 | 2.0 | 1.8 | 1.0 | 0.2 | 0.6 | 0.8 | 2.0 | 3.0 | 25.7 | 50 | 1973 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) | 269 | 266 | 271 | 332 | 412 | 404 | 482 | 495 | 497 | 460 | 391 | 291 | 381 | 16 | 1995 2023 |
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Maximum wind gust speed (km/h) | 87 | 71 | 82 | 70 | 68 | 67 | 63 | 76 | 63 | 74 | 74 | 106 | 106 | 36 | 1972 2024 |
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Date | 14 Jan 1974 | 08 Feb 1996 | 18 Mar 1975 | 22 Apr 2008 | 15 May 1996 | 16 Jun 1996 | 08 Jul 1997 | 10 Aug 1996 | 25 Sep 2016 | 30 Oct 1995 | 03 Nov 1995 | 17 Dec 1980 | 17 Dec 1980 | ||||
Mean daily sunshine (hours) | |
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Mean daily solar exposure (MJ/m2) | |
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Mean number of clear days | 0.9 | 0.6 | 0.5 | 0.9 | 1.0 | 0.3 | 0.4 | 0.9 | 0.5 | 0.3 | 0.6 | 1.0 | 7.9 | 28 | 1972 2010 |
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Mean number of cloudy days | 16.7 | 15.2 | 16.3 | 14.6 | 15.2 | 14.4 | 14.2 | 15.0 | 16.4 | 17.4 | 16.8 | 15.8 | 188.0 | 28 | 1972 2010 |
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Mean daily evaporation (mm) | 9 | 1972 1981 |
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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) | 25.9 | 25.7 | 26.1 | 26.3 | 26.0 | 25.3 | 24.5 | 24.2 | 24.3 | 25.0 | 25.4 | 25.7 | 25.4 | 31 | 1972 2010 |
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Mean 9am wet-bulb temperature (°C) | 23.7 | 23.8 | 24.2 | 24.2 | 23.9 | 23.2 | 22.3 | 21.8 | 22.0 | 22.5 | 22.9 | 23.2 | 23.1 | 31 | 1972 2010 |
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Mean 9am dew-point temperature (°C) | 22.6 | 22.9 | 23.3 | 23.2 | 22.8 | 22.2 | 21.2 | 20.6 | 20.7 | 21.3 | 21.7 | 22.0 | 22.0 | 31 | 1972 2010 |
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Mean 9am relative humidity (%) | 82 | 85 | 85 | 84 | 83 | 83 | 82 | 81 | 81 | 80 | 81 | 81 | 82 | 31 | 1972 2010 |
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Mean 9am cloud cover (oktas) | 5.9 | 5.8 | 5.9 | 5.9 | 5.7 | 5.9 | 5.6 | 5.7 | 5.9 | 6.1 | 6.1 | 5.8 | 5.9 | 29 | 1972 2010 |
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Mean 9am wind speed (km/h) | 12.6 | 11.4 | 12.5 | 15.4 | 17.4 | 19.1 | 20.7 | 21.6 | 22.1 | 21.1 | 18.0 | 14.1 | 17.2 | 35 | 1972 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) | 26.2 | 26.2 | 26.5 | 26.5 | 26.2 | 25.4 | 24.8 | 24.4 | 24.4 | 24.9 | 25.4 | 25.9 | 25.6 | 32 | 1972 2010 |
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Mean 3pm wet-bulb temperature (°C) | 23.7 | 24.0 | 24.3 | 24.3 | 23.9 | 23.3 | 22.4 | 21.9 | 22.0 | 22.5 | 22.9 | 23.2 | 23.2 | 32 | 1972 2010 |
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Mean 3pm dew-point temperature (°C) | 22.5 | 22.9 | 23.3 | 23.2 | 22.9 | 22.2 | 21.3 | 20.6 | 20.8 | 21.3 | 21.6 | 21.9 | 22.0 | 32 | 1972 2010 |
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Mean 3pm relative humidity (%) | 81 | 82 | 83 | 83 | 83 | 82 | 81 | 80 | 81 | 80 | 80 | 79 | 81 | 32 | 1972 2010 |
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Mean 3pm cloud cover (oktas) | 6.2 | 6.1 | 6.0 | 5.8 | 5.9 | 5.9 | 5.7 | 5.6 | 5.9 | 6.1 | 6.0 | 6.0 | 5.9 | 29 | 1972 2010 |
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Mean 3pm wind speed (km/h) | 13.5 | 13.2 | 13.3 | 14.8 | 16.4 | 18.0 | 20.1 | 21.0 | 21.2 | 20.3 | 17.7 | 14.3 | 17.0 | 31 | 1972 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.