Tuesday 5 May 2026 - Monthly Climate Summary for Remote Islands and Antarctica - Product code IDCKGC1RR0
Remote Islands and Antarctica in April 2026
Jump to a map of the areas covered in this summary
Australia's Indian Ocean islands
- Christmas Island Aero monthly rainfall total was 268.4 mm, which was 116% of the April average rainfall of 231.9 mm.
- At Christmas Island Aero, the mean maximum and mean minimum temperatures were 0.2 °C and 0.6 °C above the April average, respectively.
- The monthly rainfall total at Cocos Island Airport was 322.2 mm, which was 133% of the April average rainfall of 242.7 mm. In the 24 hours to 9 am on the 29th, the station recorded 109.8 mm, the highest April daily rainfall for the station since 2019.
- At Cocos Island Airport, the mean maximum and minimum temperatures were 0.6 °C and 0.5 °C above the April average, respectively.
Australia's Pacific Ocean islands
- Norfolk Island Aero recorded a monthly rainfall total of just 18.0 mm. This is very much below the April average of 122.8 mm and the lowest April rainfall for the station since 1993.
- At Norfolk Island Aero, both the mean maximum and mean minimum temperatures were 0.7 °C above the April average.
- The monthly rainfall total at Lord Howe Island Aero was 71.8 mm. This was below the April average rainfall of 144.7 mm. and the lowest April rainfall for the station since 2020
- At Lord Howe Island Aero, both the mean maximum and mean minimum temperatures were 0.3 °C above the April average.
Australia's Antarctic and sub-Antarctic territories
- The strongest wind gust recorded at the Australian Antarctic stations during April was 185 km/h at Casey on the evening of 17th, and the highest daily wind gust in April since 2006
- During April mean maximum and mean minimum temperatures were above average at all the Australian Antarctic stations.
- Monthly precipitation at Macquarie Island was 87.8 mm, which was below the April average rainfall of 95.6 mm.
- The mean maximum and mean minimum temperature at Macquarie Island were 0.7 °C and 1.3 °C above the April average respectively.
- The strongest wind gust recorded in April at Macquarie Island was 109 km/h on the afternoon of 25th.
Extremes Records Summaries Daily observations Important notes the top
| Summary statistics for April 2026 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
| Mean for April 2026 |
Diff from average |
Highest for April 2026 |
Mean for April 2026 |
Diff from average |
Lowest for April 2026 |
Total for April 2026 |
Average for April |
Rank of April 2026 |
Fraction of April average |
|||
| Offshore Islands | ||||||||||||
| Lord Howe Island Aero | 23.7 | +0.3 | 26.9 | 8th | 18.5 | +0.3 | 13.4 | 7th | 71.8 | 144.7 | low | 50% |
| Norfolk Island Aero | 23.5 | +0.7 | 25.0 | 13th | 18.6 | +0.7 | 15.7 | 23rd | 18.0 | 122.8 | v low | 15% |
| Christmas Island Aero | 28.6 | +0.2 | 30.2 | 10th | 24.2 | +0.6 | 22.5 | 5th | 268.4 | 231.9 | average | 116% |
| Cocos Island Airport | 30.5 | +0.6 | 32.5 | 17th | 25.9 | +0.5 | 24.3 | 22nd | 322.2 | 242.7 | high | 133% |
| Antarctica and Macquarie Island | ||||||||||||
| Casey | -2.9 | +4.9 | 1.8 | 8th | -7.9 | +6.9 | -13.1 | 1st | 24.0 | 21.3 | average | 113% |
| Davis | -8.3 | +2.0 | 1.0 | 10th | -14.1 | +2.1 | -26.5 | 29th | 3.4 | 9.7 | low | 35% |
| Macquarie Island | 7.7 | +0.7 | 9.8 | 8th | 5.1 | +1.3 | 1.6 | 20th | 87.8 | 95.6 | average | 92% |
| Mawson | -9.2 | +2.5 | -0.8 | 10th | -15.4 | +2.0 | -23.3 | 29th | ||||
Extremes Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for April 2026 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Lord Howe Island Aero | 24.3 | 24.2 | 24.9 | 25.3 | 24.2 | 22.6 | 25.4 | 26.9 | 25.4 | 25.6 | 26.2 | 24.8 | 23.7 | 23.6 | 24.3 | 25.6 | 25.9 | 22.5 | 21.5 | 21.3 | 20.6 | 21.9 | 21.9 | 22.8 | 21.9 | 22.2 | 22.2 | 22.8 | 23.1 | 22.8 |
| Norfolk Island Aero | 23.4 | 25.0 | 24.1 | 25.0 | 25.0 | 24.6 | 23.7 | 23.5 | 23.7 | 23.9 | 23.7 | 25.0 | 25.0 | 24.8 | 23.8 | 23.7 | 23.0 | 24.9 | 24.2 | 22.2 | 22.7 | 22.6 | 22.7 | 21.9 | 21.2 | 21.8 | 21.2 | 22.5 | 22.9 | 22.2 |
| Christmas Island Aero | 29.4 | 28.6 | 27.9 | 29.0 | 27.2 | 27.4 | 28.2 | 28.1 | 28.6 | 30.2 | 29.6 | 29.0 | 29.6 | 26.9 | 29.0 | 29.0 | 28.3 | 28.9 | 28.8 | 27.4 | 28.3 | 28.1 | 29.5 | 29.5 | 28.8 | 28.9 | 29.0 | 28.5 | 27.8 | 28.4 |
| Cocos Island Airport | 31.5 | 30.9 | 30.8 | 30.2 | 30.7 | 30.4 | 30.4 | 32.1 | 31.4 | 32.1 | 29.9 | 30.7 | 29.9 | 29.0 | 29.2 | 31.0 | 32.5 | 28.7 | 30.0 | 30.4 | 30.0 | 29.5 | 30.4 | 30.2 | 31.0 | 30.4 | 30.6 | 30.0 | 29.9 | 29.9 | 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 | -3.5 | -3.4 | -3.2 | -4.0 | -1.8 | -1.3 | -0.1 | 1.8 | -1.5 | -4.7 | -4.6 | -3.0 | -2.7 | -2.6 | -3.0 | -3.8 | -1.3 | -0.7 | -0.3 | -1.2 | -1.1 | 0.7 | -3.9 | -6.6 | -4.7 | -2.8 | -2.4 | -4.2 | -7.0 | -11.2 |
| Davis | -14.6 | -9.3 | -7.2 | -7.6 | -9.9 | -9.7 | -10.9 | -2.4 | 0.6 | 1.0 | -0.2 | -5.4 | -8.6 | -3.9 | -9.3 | -4.9 | -4.5 | -8.0 | -10.4 | -9.0 | -6.7 | -5.0 | -8.0 | -11.1 | -12.0 | -14.3 | -12.1 | -19.3 | -15.0 | -10.7 |
| Macquarie Island | 8.9 | 9.0 | 8.3 | 7.6 | 8.1 | 7.8 | 9.0 | 9.8 | 8.1 | 9.4 | 7.4 | 7.3 | 6.2 | 5.9 | 5.3 | 7.3 | 7.4 | 6.0 | 5.0 | 7.4 | 7.5 | 8.6 | 8.6 | 8.5 | 7.1 | 7.7 | 7.9 | 8.0 | 8.3 | 8.4 |
| Mawson | -8.1 | -8.8 | -9.4 | -9.8 | -10.8 | -12.6 | -6.1 | -7.7 | -3.6 | -0.8 | -1.9 | -3.9 | -8.4 | -7.9 | -7.6 | -8.8 | -11.3 | -12.1 | -12.0 | -11.2 | -11.6 | -6.6 | -4.0 | -6.1 | -12.7 | -16.1 | -18.8 | -19.2 | -9.2 | -8.6 |
|
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 |
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| Daily minimum temperatures for April 2026 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 |
| Lord Howe Island Aero | 20.1 | 19.9 | 20.3 | 18.0 | 20.1 | 18.6 | 13.4 | 18.7 | 20.3 | 21.6 | 21.1 | 19.8 | 18.9 | 19.2 | 20.4 | 14.9 | 21.9 | 17.1 | 17.3 | 16.6 | 16.1 | 16.4 | 16.4 | 16.3 | 18.8 | 17.7 | 17.3 | 19.1 | 18.1 | 19.9 |
| Norfolk Island Aero | 19.7 | 19.7 | 19.8 | 19.9 | 20.2 | 21.0 | 20.0 | 19.7 | 19.3 | 19.6 | 19.7 | 19.7 | 19.3 | 18.2 | 19.0 | 16.5 | 16.9 | 17.1 | 18.6 | 17.9 | 16.6 | 16.7 | 15.7 | 16.8 | 17.3 | 17.4 | 18.0 | 18.2 | 19.3 | 19.2 |
| Christmas Island Aero | 24.0 | 23.9 | 24.5 | 24.1 | 22.5 | 23.3 | 23.4 | 23.8 | 22.8 | 23.7 | 23.7 | 24.7 | 25.4 | 24.9 | 23.4 | 23.9 | 25.4 | 24.9 | 24.3 | 25.5 | 23.1 | 25.2 | 23.6 | 24.5 | 24.7 | 25.8 | 25.1 | 25.3 | 23.3 | 23.5 |
| Cocos Island Airport | 25.6 | 27.0 | 27.2 | 25.8 | 26.1 | 27.3 | 25.8 | 24.3 | 26.5 | 26.0 | 25.7 | 27.1 | 24.9 | 26.3 | 24.7 | 24.7 | 26.1 | 24.9 | 24.4 | 27.1 | 26.9 | 24.3 | 26.0 | 26.4 | 26.5 | 25.0 | 26.8 | 26.3 | 24.7 | 26.2 | 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 | -13.1 | -7.0 | -7.2 | -7.5 | -8.7 | -7.7 | -6.5 | -9.0 | -7.3 | -10.6 | -7.1 | -7.2 | -6.5 | -6.1 | -7.1 | -10.8 | -9.7 | -7.6 | -4.9 | -4.8 | -4.3 | -3.4 | -5.8 | -10.3 | -11.0 | -8.7 | -6.3 | -7.1 | -12.2 | -11.4 |
| Davis | -18.6 | -18.7 | -15.5 | -13.2 | -12.0 | -11.8 | -16.4 | -16.6 | -10.9 | -2.6 | -1.8 | -7.5 | -9.4 | -13.8 | -13.0 | -14.5 | -12.3 | -9.9 | -13.8 | -13.5 | -16.2 | -16.1 | -12.2 | -14.1 | -16.8 | -16.6 | -18.5 | -19.6 | -26.5 | -20.8 |
| Macquarie Island | 3.5 | 7.0 | 6.9 | 3.1 | 4.0 | 6.8 | 6.2 | 7.5 | 6.6 | 4.4 | 5.8 | 4.7 | 5.5 | 5.2 | 3.3 | 3.4 | 4.0 | 5.4 | 2.1 | 1.6 | 4.9 | 6.4 | 6.8 | 7.7 | 7.1 | 5.1 | 5.8 | 5.9 | 3.4 | 4.1 |
| Mawson | -14.3 | -14.0 | -15.6 | -14.8 | -15.9 | -17.3 | -17.7 | -17.6 | -9.8 | -9.2 | -6.0 | -7.2 | -9.2 | -14.0 | -12.9 | -11.4 | -15.0 | -18.9 | -17.2 | -17.3 | -17.3 | -17.8 | -16.3 | -11.1 | -15.9 | -17.9 | -22.5 | -23.2 | -23.3 | -20.3 |
|
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 |
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| Daily rainfall for April 2026 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| Lord Howe Island (Milky Way) | - | 2.8 | - | - | - | 1.2 | - | - | - | - | - | 14.8 | 1.6 | 0.8 | - | 0.4 | - | 15.0 | 0.2 | 4.0 | 4.0 | 1.0 | 5.8 | 10.2 | 0.2 | 2.0 | 0.2 | 2.0 | 3.0 | 0.6 | |
| Lord Howe Island Aero | - | 0.2 | 0.2 | 0.8 | 1.0 | 0.2 | - | - | - | - | - | 20.2 | 0.8 | 0.2 | - | 3.0 | - | 12.2 | 0.8 | 3.2 | 6.4 | 2.6 | 1.2 | 11.0 | - | 1.2 | - | 0.6 | 6.0 | - | |
| Norfolk Island Aero | - | - | 0.8 | 6.4 | 0.4 | - | - | - | - | - | 0.4 | - | - | - | 0.8 | - | - | 1.0 | 1.8 | - | 1.0 | 1.8 | - | - | 0.2 | 0.8 | - | 2.4 | - | 0.2 | |
| Christmas Island Aero | 2.0 | 1.8 | 0.2 | 4.8 | 63.6 | 1.6 | 0.4 | 15.8 | 42.2 | 1.2 | 0.2 | 1.6 | - | - | 29.0 | 3.4 | - | 1.8 | 3.8 | 0.2 | 67.0 | 1.0 | 5.2 | 0.6 | 3.0 | - | - | - | 17.6 | 0.4 | |
| Cocos Island Airport | 4.4 | 4.0 | 0.6 | 0.8 | - | - | 1.6 | 11.4 | - | 2.6 | 12.0 | - | 10.2 | 0.2 | 12.2 | 20.4 | 12.2 | 39.6 | 37.2 | - | - | 13.4 | 2.2 | 2.6 | 0.2 | 6.8 | 1.4 | 3.0 | 109.8 | 13.4 | 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 | 8.0 | - | - | - | 0.2 | - | - | - | - | - | 2.6 | 1.8 | 1.6 | - | 1.0 | - | - | - | - | 0.8 | 1.4 | 6.6 | - | ||||||||
| Davis | - | - | - | - | - | - | - | - | 0.2 | - | 0.8 | 0.2 | 0.2 | - | 0.1 | - | 0.2 | 0.2 | - | - | - | - | - | - | - | - | - | 1.4 | 0.1 | - | |
| Macquarie Island | 0.6 | 6.8 | 1.2 | 3.4 | 0.4 | 0.2 | 0.2 | 3.2 | 1.8 | 2.0 | 13.0 | 1.8 | 7.0 | 0.2 | - | - | 8.0 | 7.4 | 0.4 | 0.4 | 1.4 | 0.4 | 0.4 | 1.6 | 3.4 | 2.0 | 1.0 | 0.2 | 17.8 | 1.6 | |
|
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 rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell). | |||||||||||||||||||||||||||||||
| Rainfalls 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 | |||||||||||||||||
Extremes 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 on Tuesday 5 May 2026. 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 rainfall 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, excluding the current year. The length of record can
vary widely from site to site. Averages are not shown for sites with fewer 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 rain.
The Rank indicates how rainfall this time compares with the climate record for the site,
based on the
decile ranking
(very low rainfall 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 rain 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
