Tuesday, 1 October 2024 - Monthly Climate Summary for Remote Islands and Antarctica - Product code IDCKGC1RR0
Remote Islands and Antarctica in September 2024
Jump to a map of the areas covered in this summary
Australia's Indian Ocean islands
- Christmas Island Aero recorded 78.8 mm of total rainfall in September, this was 144% of its September average rainfall of 54.8 mm.
- At Christmas Island Aero, both the mean maximum and minimum temperatures were 0.8 °C and 0.5 °C above average, respectively.
- Total rainfall at Cocos Island Airport in September was at least 51.8 mm, compared to the September average rainfall of 90.1 mm. Noting there were several days of missing rainfall data in September.
- The mean maximum and minimum temperature at Cocos Island Airport was 0.9 °C above average.
- On the 23rd, Cocos Island Airport had its highest September daytime temperature on record at 30.9 °C, the average daytime temperature for September is 28.3 °C.
Australia's Pacific Ocean islands
- Norfolk Island Aero had below average rainfall in September, with a monthly rainfall total of at least 31.2 mm, noting that there were several days of missing rainfall data in September. The September average rainfall is 92.0 mm.
- At Norfolk Island Aero, both the mean maximum and minimum temperatures were 1.6 °C above average.
- Norfolk Island Aero had its highest September mean daily maximum temperature on record at 20.7 °C and its highest September mean daily minimum temperature on record at 15.4 °C.
- Norfolk Island Aero had its highest September mean temperature on record at 18.0 °C, the average for September is 16.5 °C.
- The rainfall total at Lord Howe Island Aero was at least 90.0 mm, noting there were several days of missing rainfall data in September. The September average rainfall is 112.4 mm.
- At Lord Howe Island Aero, the mean maximum temperature was 1.4 °C above average and the mean minimum temperature was 0.9 °C above average.
- Lord Howe Island Aero had its highest September mean daily maximum temperature on record at 21.4 °C and the station had its highest September temperature on record on the 1st at 24.1 °C.
Australia's Antarctic and sub-Antarctic territories
- The strongest wind gust recorded at the Australian Antarctic stations during September was 157 km/h at Davis on the morning of the 24th, which was the strongest in September since 2020.
- Mean maximum and mean minimum temperatures were below average at the Australian Antarctic stations, with Casey having its coldest September since 2018.
- Monthly precipitation at Macquarie Island was 84.4 mm, this was close to the September average of 76.8 mm.
- The mean maximum temperature at Macquarie Island was 0.6 °C above average, while the mean minimum temperature was 0.3 °C below average.
- The strongest wind gust at Macquarie Island was 117km/h, on the morning of the 25th.
Records Summaries Daily observations Important notes the top
Record highest September temperature | ||||||
---|---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for September |
|||
Cocos Island Airport | 30.9 | on the 23rd | 30.2 | on the 9th in 2022 | 73 | 28.3 |
Lord Howe Island Aero | 24.1 | on the 1st | 23.7 | on the 21st in 2023 | 36 | 20.0 |
Record highest September mean daily maximum temperature | |||||
---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for September |
||
Norfolk Island Aero | 20.7 | 20.3 | in 1996 | 85 | 19.1 |
Lord Howe Island Aero | 21.4 | 21.0 | in 1996 | 35 | 20.0 |
Highest September mean daily maximum temperature for at least 20 years | |||||
---|---|---|---|---|---|
Observed (°C) |
Most recent higher |
Average for September |
|||
Christmas Island Aero | 27.1 | =27.1 | in 1987 | 26.3 | |
Cocos Island Airport | 29.2 | 29.5 | in 1999 | 28.3 |
Record highest September daily minimum temperature | ||||||
---|---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for September |
|||
Norfolk Island Aero | 19.0 | on the 2nd | = 19.0 | on the 19th in 1988 | 86 | 13.8 |
Record highest September mean daily minimum temperature | |||||
---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for September |
||
Norfolk Island Aero | 15.4 | 15.3 | in 1996 | 85 | 13.8 |
Record highest September mean temperature | |||||
---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for September |
||
Norfolk Island Aero | 18.0 | 17.8 | in 1996 | 85 | 16.5 |
Records Summaries Daily observations Important notes the top
Summary statistics for September 2024 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum temperatures (°C) |
Minimum temperatures (°C) |
Precipitation (millimetres) |
||||||||||
Mean for September 2024 |
Diff from average |
Highest for September 2024 |
Mean for September 2024 |
Diff from average |
Lowest for September 2024 |
Total for September 2024 |
Average for September |
Rank of September 2024 |
Fraction of September average |
|||
Offshore Islands | ||||||||||||
Christmas Island Aero | 27.1 | +0.8 | 28.2 | 28th | 22.8 | +0.5 | 19.9 | 22nd | 78.8 | 54.8 | high | 144% |
Cocos Island Airport | 29.2 | +0.9 | 30.9 | 23rd | 24.9 | +0.9 | 22.1 | 6th | 51.8 | 90.1 | average | 57% |
Lord Howe Island Aero | 21.4 | +1.4 | 24.1 | 1st | 15.5 | +0.9 | 9.7 | 15th | 90.0 | 112.4 | average | 80% |
Norfolk Island Aero | 20.7 | +1.6 | 23.0 | 22nd | 15.4 | +1.6 | 12.6 | 16th | 31.2 | 92.0 | v low | 34% |
Antarctica and Macquarie Island | ||||||||||||
Casey | -12.6 | -2.8 | -6.4 | 16th | -21.1 | -3.9 | -30.7 | 11th | 23.9 | 18.1 | average | 132% |
Davis | -13.6 | -0.9 | -6.3 | 26th | -19.7 | -0.1 | -27.3 | 20th | 1.2 | 5.4 | low | 22% |
Macquarie Island | 6.0 | +0.6 | 7.5 | 29th | 1.3 | -0.3 | -3.2 | 17th | 84.4 | 76.8 | average | 110% |
Mawson | -15.1 | -1.1 | -6.9 | 27th | -21.4 | -1.0 | -26.7 | 15th | ||||
Note: Precipitation values from Casey and Davis should be used with caution. |
Records Summaries Daily observations Important notes the top
Daily maximum temperatures for September 2024 | ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Offshore Islands | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
Christmas Island Aero | 26.8 | 27.1 | 26.7 | 27.2 | 27.3 | 26.0 | 27.0 | 25.5 | 25.7 | 26.7 | 26.1 | 26.6 | 27.1 | 27.2 | 27.3 | 27.5 | 27.2 | 27.2 | 26.6 | 27.6 | 28.0 | 27.9 | 27.3 | 28.1 | 27.4 | 28.0 | 27.6 | 28.2 | 27.1 | 27.5 |
Cocos Island Airport | 29.0 | 29.5 | 29.4 | 29.5 | 28.5 | 29.0 | 29.0 | 29.4 | 28.9 | 29.1 | 28.3 | 29.1 | 28.9 | 29.5 | 29.9 | 29.0 | 29.1 | 28.9 | 30.2 | 29.3 | 29.5 | 27.4 | 30.9 | 29.4 | 30.5 | 29.4 | 28.8 | 28.7 | 28.9 | 29.4 |
Lord Howe Island Aero | 24.1 | 23.7 | 18.6 | 19.1 | 19.5 | 21.2 | 22.5 | 23.1 | 23.0 | 22.7 | 20.9 | 22.1 | 18.2 | 19.7 | 20.8 | 18.2 | 19.4 | 20.8 | 21.9 | 23.3 | 23.6 | 21.9 | 21.7 | 23.1 | 22.7 | 22.6 | 17.9 | 22.6 | ||
Norfolk Island Aero | 22.6 | 22.3 | 22.5 | 17.8 | 18.9 | 18.6 | 19.6 | 20.0 | 21.3 | 22.2 | 21.1 | 21.4 | 21.6 | 21.0 | 18.9 | 18.8 | 18.5 | 19.0 | 20.5 | 20.7 | 22.0 | 23.0 | 20.7 | 21.3 | 20.5 | 21.6 | 22.1 | 20.5 | 20.7 | 20.5 |
Antarctica and Macquarie Island | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
Casey | -13.6 | -11.1 | -10.3 | -9.1 | -9.6 | -11.5 | -11.8 | -11.8 | -17.5 | -21.9 | -20.1 | -19.3 | -9.2 | -10.8 | -6.4 | -6.4 | -13.2 | -15.5 | -16.2 | -12.5 | -10.7 | -11.2 | -12.0 | -12.3 | -11.2 | -12.4 | -13.2 | -16.3 | -12.3 | -10.0 |
Davis | -9.9 | -9.1 | -14.4 | -13.0 | -15.7 | -12.8 | -12.3 | -12.1 | -13.9 | -12.3 | -15.2 | -15.5 | -14.2 | -9.9 | -11.3 | -19.3 | -17.2 | -18.7 | -19.1 | -22.1 | -21.1 | -21.1 | -8.1 | -7.3 | -7.8 | -6.3 | -8.4 | -10.1 | -14.3 | -16.4 |
Macquarie Island | 5.8 | 6.6 | 6.1 | 6.0 | 6.6 | 5.9 | 4.8 | 6.0 | 6.1 | 6.4 | 6.2 | 6.1 | 6.3 | 4.9 | 5.4 | 4.8 | 5.9 | 6.6 | 6.2 | 5.6 | 5.7 | 6.5 | 6.5 | 6.2 | 7.2 | 2.4 | 6.9 | 6.7 | 7.5 | 7.4 |
Mawson | -10.4 | -13.2 | -14.7 | -16.2 | -15.8 | -17.1 | -17.7 | -18.9 | -17.0 | -15.7 | -16.4 | -15.5 | -17.3 | -19.1 | -19.3 | -18.4 | -15.7 | -15.0 | -15.2 | -17.5 | -19.1 | -19.4 | -15.2 | -9.8 | -8.1 | -7.0 | -6.9 | -10.7 | -14.5 | -16.9 |
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated, and typically occurred in the afternoon of that day. | ||||||||||||||||||||||||||||||
Temperatures coloured according to their difference from the long-term average for the period |
-10.0 | -9.0 | -8.0 | -7.0 | -6.0 | -5.0 | -4.0 | -3.0 | -2.0 | -1.0 | 0.0 | +1.0 | +2.0 | +3.0 | +4.0 | +5.0 | +6.0 | +7.0 | +8.0 | +9.0 | +10.0 | °C | Grey outline marks highest and lowest for the period |
Daily minimum temperatures for September 2024 | ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Offshore Islands | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
Christmas Island Aero | 22.4 | 21.9 | 23.3 | 22.9 | 23.2 | 23.1 | 23.7 | 22.4 | 22.4 | 22.2 | 23.4 | 23.0 | 23.4 | 23.3 | 23.7 | 23.1 | 22.8 | 22.7 | 23.2 | 22.9 | 21.4 | 19.9 | 21.0 | 23.2 | 23.8 | 22.0 | 21.5 | 24.0 | 24.5 | 24.7 |
Cocos Island Airport | 25.1 | 25.7 | 25.7 | 23.8 | 25.3 | 22.1 | 24.0 | 25.4 | 25.6 | 24.7 | 24.9 | 24.5 | 24.5 | 25.6 | 26.0 | 25.9 | 25.2 | 24.0 | 24.9 | 22.9 | 25.2 | 24.3 | 22.2 | 25.3 | 25.8 | 26.0 | 25.7 | 24.4 | 25.3 | 25.9 |
Lord Howe Island Aero | 16.6 | 19.2 | 15.2 | 14.3 | 10.7 | 13.7 | 18.4 | 19.0 | 19.5 | 17.9 | 17.8 | 15.1 | 9.7 | 12.3 | 13.5 | 14.0 | 16.9 | 18.7 | 13.8 | 15.0 | 12.2 | 11.6 | 15.5 | 19.7 | 16.8 | 15.8 | ||||
Norfolk Island Aero | 18.8 | 19.0 | 18.5 | 13.6 | 13.3 | 14.2 | 15.1 | 14.1 | 13.7 | 13.6 | 14.6 | 16.4 | 15.8 | 16.8 | 14.3 | 12.6 | 14.2 | 13.3 | 14.3 | 15.3 | 15.7 | 14.6 | 14.5 | 15.0 | 14.9 | 13.5 | 16.9 | 18.6 | 18.0 | 17.5 |
Antarctica and Macquarie Island | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |
Casey | -18.5 | -21.3 | -18.9 | -17.8 | -13.8 | -18.7 | -20.6 | -16.2 | -24.8 | -23.0 | -30.7 | -28.4 | -23.2 | -21.0 | -25.9 | -22.2 | -14.1 | -21.3 | -22.0 | -25.2 | -17.1 | -15.6 | -15.6 | -24.3 | -22.2 | -19.1 | -22.2 | -23.8 | -24.3 | -19.9 |
Davis | -16.2 | -16.2 | -19.9 | -19.0 | -18.6 | -18.2 | -16.2 | -15.0 | -17.1 | -17.4 | -16.8 | -20.5 | -23.0 | -19.3 | -19.0 | -22.7 | -25.4 | -26.0 | -26.7 | -27.3 | -27.3 | -27.0 | -25.7 | -21.1 | -10.6 | -9.6 | -14.5 | -15.9 | -18.1 | -22.1 |
Macquarie Island | 1.1 | 3.8 | 1.1 | 0.6 | 4.5 | 4.5 | 3.4 | -0.1 | 3.6 | -2.0 | -0.4 | 1.2 | 3.0 | 1.4 | 1.8 | -1.8 | -3.2 | 3.1 | 0.4 | 0.5 | 1.5 | 0.7 | 2.8 | 0.7 | 0.6 | -0.2 | -1.5 | 1.3 | 2.5 | 3.6 |
Mawson | -13.7 | -18.4 | -19.8 | -18.6 | -17.5 | -21.3 | -22.9 | -26.6 | -25.2 | -23.3 | -19.5 | -19.8 | -23.2 | -23.6 | -26.7 | -26.1 | -24.8 | -23.1 | -22.9 | -24.1 | -26.3 | -26.6 | -23.7 | -23.9 | -16.2 | -12.2 | -11.7 | -16.8 | -20.5 | -23.1 |
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated, and typically occurred that morning. | ||||||||||||||||||||||||||||||
Temperatures coloured according to their difference from the long-term average for the period |
-10.0 | -9.0 | -8.0 | -7.0 | -6.0 | -5.0 | -4.0 | -3.0 | -2.0 | -1.0 | 0.0 | +1.0 | +2.0 | +3.0 | +4.0 | +5.0 | +6.0 | +7.0 | +8.0 | +9.0 | +10.0 | °C | Grey outline marks highest and lowest for the period |
Daily precipitation for September 2024 | |||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Offshore Islands | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
Christmas Island Aero | - | 1.4 | - | 0.4 | - | 1.6 | 1.4 | 1.2 | 23.0 | 49.2 | 0.2 | 0.4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | |
Cocos Island Airport | 0.6 | - | - | 0.8 | - | 1.4 | 2.4 | 1.4 | 0.2 | - | 1.2 | 4.4 | 0.2 | - | - | - | - | - | 1.4 | - | - | 37.8 | - | - | - | - | - | - | |||
Lord Howe Island (Milky Way) | - | - | - | 2.2 | - | - | - | - | - | - | - | - | 19.8 | 5.2 | - | 11.6 | 2.0 | - | - | 1.6 | - | 0.2 | - | - | - | - | 19.8 | 21.4 | 12.0 | 2.2 | |
Lord Howe Island Aero | - | - | - | 0.4 | - | - | - | - | - | - | - | - | 18.2 | 13.0 | - | 5.2 | 3.2 | - | - | 0.8 | - | 0.2 | - | - | - | - | 26.4 | 22.6 | |||
Norfolk Island Aero | - | - | - | 2.0 | 0.8 | - | - | - | - | - | - | 1.0 | 1.8 | 0.2 | 1.2 | - | - | 0.2 | 2.8 | 7.4 | 7.6 | 3.0 | - | - | - | 0.2 | - | 3.0 | |||
Antarctica and Macquarie Island | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
Casey | - | - | 3.4 | 0.8 | - | 0.4 | - | - | - | - | - | - | - | 2.0 | 0.2 | 3.6 | 4.4 | - | - | 0.2 | 7.8 | 1.0 | 0.1 | - | - | - | - | - | - | - | |
Davis | - | - | - | - | - | - | - | - | - | - | - | - | 0.6 | - | - | 0.6 | - | - | - | - | - | - | - | - | - | - | - | ||||
Macquarie Island | - | 1.6 | 0.2 | 3.2 | 2.4 | 3.6 | 3.8 | 0.8 | 4.8 | 0.4 | 5.8 | 2.8 | 3.6 | 2.4 | 0.2 | 3.4 | 2.2 | 4.4 | 2.4 | 10.2 | 0.8 | - | 2.6 | 4.0 | 2.4 | 11.0 | 0.4 | 2.4 | 0.2 | 2.4 | |
Most values are the precipitation in the 24 hours to 9 am on the day indicated.
Days marked with → are part of a longer accumulation, which is shown on the final day. Values over 100 mm have been rounded to the nearest whole millimetre. Days marked with - have a precipitation report of zero; days left blank have no precipitation report (which often indicates no precipitation fell). | |||||||||||||||||||||||||||||||
Precipitations coloured according to the amount |
0 | 1.0 | 5.0 | 10.0 | 15.0 | 25.0 | 50.0 | 100 | 150 | 200 | 300 | 400 | 600 | millimetres |
Records Summaries Daily observations Important notes the top
Notes
The Monthly climate summary, usually published in the first week of the following month, lists the main features of the weather in Remote Islands and Antarctica using the most timely and accurate information available on the date of publication; it will generally not be updated.
This statement has been prepared based on information available at 2 pm on Tuesday 1 October 2024. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
In some situations, some or all of the precipitation is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.
Averages for individual sites are long-term means based on observations from
all available years of record, which vary widely from site to site.
They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median
is sometimes more representative than the
mean
of long-term average precipitation.
The Rank indicates how precipitation this time compares with the climate record for the site,
based on the
decile ranking
(very low precipitation is in decile 1, low in decile 2 or 3,
average in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of average shows how much precipitation has fallen this time as a
percentage of the long-term mean.
Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.
Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.
Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence