Remote Islands and Antarctica in October 2022

Australia's Indian Ocean islands

  • October was much wetter than average at Christmas Island Aero, with heavy rainfall on several days; the site recorded 225.0 mm for the month, which was nearly three times its October monthly average rainfall.
  • At Christmas Island Aero, both mean maximum and mean minimum temperatures were slightly below average.
  • Cocos island Airport recorded little rainfall during the month, resulting in a monthly total which was only 31% of its October average.
  • Both mean maximum and mean minimum temperatures were above average at Cocos Island Airport.

Australia's Pacific Ocean islands

  • Lord Howe Island Aero's rainfall for the month was 61% above the October average, mostly due to a daily total of 84.8 mm on the 26th associated with a low pressure system off the New South Wales coast.
  • Lord Howe Island Aero had its highest total October precipitation for at least 20 years
  • At Lord Howe Island Aero, mean maximum and mean minimum temperatures were within half a degree of their October average.
  • At Norfolk Island Aero, most rainfall was recorded on the first day of the month and little was recorded in the last two weeks of the month, resulting in the monthly total that was close the October average.
  • Both mean maximum and mean minimum temperatures were above average at Norfolk Island Aero.

Australia's Antarctic and sub-Antarctic territories

  • Total wind run for October was above average at all three Australian Antarctic stations.
  • The strongest wind gust recorded for the month was 196 km/h at Casey on the 4th.
  • Daily maximum and minimum temperatures in the second half of the month were generally warmer than average at Mawson, Davis and Casey stations, with some days more 10 degrees warmer than average.
  • Mawson station had its warmest October night on record on the 29th.
  • Both mean maximum and mean minimum temperatures were more than 2 degrees above their October averages at all three Antarctic stations.
  • The coldest temperature recorded this October was -25.5 °C at Casey station on the 13th.
  • Macquarie Island's rainfall for the month was 43% above the October average.
  • At Macquarie Island, the mean maximum temperature equalled its October average, while the mean minimum temperature was 0.1 °C below average.
  • Macquarie Island had its lowest October temperature on record.
  • The strongest wind gust at Macquarie Island this October was 104 km/h on the 3rd.

Further information

Media
(03) 9669 4057

Record highest October daily precipitation
New record
(mm)
Old
record
Years of
record
Lord Howe Island (Milky Way) 101.8 on the 26th 79.4 on the 15th in 2014 23



Highest October total precipitation for at least 20 years
Observed
(mm)
Most recent
higher
Average for
October
Lord Howe Island Aero 166.4 229.6 in 1998 103.3



Record highest October daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
October
Mawson -3.8 on the 29th -4.7 on the 24th in 2012 69 -16.3



Record lowest October temperature
New record
(°C)
Old
record
Years of
record
Average for
October
Macquarie Island -6.0 on the 5th -4.6 on the 26th in 1969 75 2.0



Summary statistics for October 2022
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Precipitation
(millimetres)
Mean for
October
2022
Diff
from
average
Highest for
October
2022
Mean for
October
2022
Diff
from
average
Lowest for
October
2022
Total for
October
2022
Average
for
October
Rank of
October
2022
Fraction of
October
average
Offshore Islands (district 200)
Christmas Island Aero 26.7 -0.2 27.7 19th 22.5 -0.2 20.2 29th 225.0 76.9 v high 293%
Cocos Island Airport 29.0 +0.3 30.6 11th 24.9 +0.6 23.1 5th 24.6 80.0 average 31%
Lord Howe Island Aero 20.9 -0.2 24.4 27th 16.1 +0.3 11.6 5th 166.4 103.3 high 161%
Norfolk Island Aero 21.0 +0.8 23.9 30th 15.9 +1.0 12.4 6th 87.4 84.2 average 104%
Antarctica and Macquarie Is. (district 300)
Casey -4.8 +3.1 -0.1 25th -11.7 +3.2 -22.6 8th 5.6 15.8 v low 35%
Davis -6.1 +2.8 1.4 25th -12.8 +2.5 -25.5 13th
Macquarie Island 5.8 0.0 7.3 31st 1.9 -0.1 -6.0 5th 111.4 78.0 v high 143%
Mawson -7.5 +2.3 -1.0 26th -13.9 +2.4 -22.0 4th
Note: Precipitation values from Casey and Davis should be used with caution.

Daily maximum temperatures for October 2022
Offshore Islands (200)12345678910111213141516171819202122232425262728293031
Christmas Island Aero26.727.026.326.626.526.426.025.326.426.627.227.127.026.527.127.427.526.827.727.227.127.626.525.827.426.626.726.626.626.425.9
Cocos Island Airport28.327.628.429.127.827.928.429.330.230.030.630.529.029.129.329.229.029.229.429.229.830.529.228.929.529.327.527.828.228.2
Lord Howe Island Aero18.418.319.019.119.919.220.721.120.819.919.320.420.420.120.521.020.920.720.921.821.821.620.520.021.123.524.424.023.923.6
Norfolk Island Aero20.520.018.419.619.518.619.421.021.622.020.620.821.520.520.021.320.520.820.320.619.921.321.822.022.021.622.622.823.623.922.1
Antarctica and Macquarie Is. (300)12345678910111213141516171819202122232425262728293031
Casey-6.2-12.6-7.1-3.5-3.2-3.7-16.3-10.2-4.7-4.1-1.2-1.1-3.4-8.7-5.2-4.3-2.2-2.4-5.9-5.6-7.4-2.8-0.5-0.4-0.1-1.3-2.7-6.5-5.9-5.1-3.7
Davis-11.2-8.7-11.5-7.9-6.6-8.0-7.5-4.7-4.5-7.3-7.5-10.9-10.7-8.5-8.2-2.9-1.4-3.4-7.7-8.6-11.4-8.4-6.4-4.01.4-0.7-1.8-2.2-2.7-1.5-2.9
Macquarie Island6.16.15.02.33.65.26.47.15.76.36.34.27.17.06.95.66.66.05.85.76.46.34.86.26.84.15.56.55.55.17.3
Mawson-14.0-13.3-13.7-7.0-6.3-6.6-8.9-9.0-7.9-10.9-11.2-12.1-11.8-12.3-9.3-9.1-5.3-3.4-5.7-8.3-6.4-11.8-8.9-6.4-1.6-1.0-1.6-1.4-1.7-2.2-3.8
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 October 2022
Offshore Islands (200)12345678910111213141516171819202122232425262728293031
Christmas Island Aero23.222.322.823.122.322.522.923.123.323.523.523.723.622.622.123.222.223.122.622.823.424.222.322.421.922.220.820.620.220.521.4
Cocos Island Airport24.624.624.424.423.124.825.724.925.726.026.425.226.426.025.325.525.424.524.425.024.824.625.425.524.025.324.023.823.423.823.9
Lord Howe Island Aero15.613.813.013.511.616.416.517.717.815.217.115.116.416.214.615.813.413.216.517.817.417.918.918.818.916.719.520.015.515.513.9
Norfolk Island Aero15.615.414.914.314.112.414.715.816.317.116.415.916.115.615.512.815.414.814.513.313.814.016.617.917.416.618.218.919.419.518.2
Antarctica and Macquarie Is. (300)12345678910111213141516171819202122232425262728293031
Casey-12.2-15.6-20.7-19.0-9.8-6.4-20.4-22.6-16.3-10.4-13.3-5.9-7.5-13.3-18.2-14.6-7.1-7.8-8.6-9.4-9.2-13.6-8.4-3.7-6.4-5.5-5.5-12.9-13.2-12.6-12.2
Davis-14.5-14.4-17.7-19.7-15.3-14.5-14.9-10.8-8.9-10.8-17.4-21.4-25.5-16.6-14.6-14.1-8.4-9.7-13.9-15.7-16.6-16.3-14.3-10.8-9.6-4.1-4.2-3.9-5.5-6.0-6.1
Macquarie Island4.03.90.6-3.3-6.0-3.31.73.31.42.11.12.21.81.95.33.52.91.01.90.62.35.52.41.93.31.20.71.55.34.62.5
Mawson-18.2-18.8-19.2-22.0-20.1-9.3-10.0-13.5-12.7-17.6-19.2-19.3-19.2-16.0-15.5-16.8-15.6-13.2-13.1-13.6-13.8-16.9-14.2-13.5-10.4-6.7-6.5-5.6-3.8-5.5-10.5
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 October 2022
Offshore Islands (200)12345678910111213141516171819202122232425262728293031
Christmas Island Aero - - 2.2 0.2 0.6 - - 2.6 0.2 5.8 0.4 - - 0.8 0.2 - - 0.2 - - 2.0 74.6 26.0 95.0 6.4 0.2 - - 3.2 4.4
Cocos Island Airport 0.2 - -
8.2 0.2 - 0.4 2.2 - - 7.6 0.6
- - - - - - - - - - - - - 1.6 3.2 - 0.4
Lord Howe Island (Milky Way) 4.8 - 2.2 0.2 4.0 - - - 1.6 17.0 - 4.2 3.0 - 6.8 - - - - - - - - 0.4 9.8 102 10.4 10.2 - - 3.2
Lord Howe Island Aero 4.2 1.6 3.8 1.0 6.2 - - - 2.6 16.6 - 9.0 3.2
8.2 - - - 0.2 - - - - 0.6 5.0 84.8 10.8 8.4 0.2 - -
Norfolk Island Aero 50.8 4.8 0.8
- - 1.0 - 1.4 0.6 - 1.4 0.6 2.6 - 0.2 11.6 -
- - - 7.8 - - - - - - 3.8 -
Antarctica and Macquarie Is. (300)12345678910111213141516171819202122232425262728293031
Casey 2.0 - -
- 0.2 -
- 0.5 0.2
1.4 - - -

0.3 - - 0.4 0.6 - - - - - - - -
Davis - - 1.8 - - - - 0.8 1.2 - - - - - - - - - - - - - - - 0.2
Macquarie Island 3.2 3.0 9.4 6.0 1.8 0.2 - 7.4 4.2 2.0 0.6 - - - 0.2 - 3.4 4.4 3.2 10.8 - 0.4 16.4 - - 1.0 - - 10.4 21.0 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

Map of the areas covered by this summary

Notes

The Monthly climate summary, generally published on the third working day of each 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. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 1 pm on Thursday 3 November 2022. 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.

Further information

Media
(03) 9669 4057

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