Remote Islands and Antarctica in May 2022

Australia's Indian Ocean islands

  • Rainfall totals in May were 52% above average at Christmas Island Aero.
  • Rainfall at Christmas Island Aero was running below average during May until a daily total of 119.0 mm on the 29th, followed by 53.2 mm on the 30th.
  • At Christmas Island Aero, mean maximum temperature was 0.9 °C above average, but mean minimum temperature was 0.4 °C below average.
  • Christmas Island Aero had its highest May temperature on record.
  • Cocos Island Airport site experienced equipment issues on some days during May. As a result, daily rainfall totals for those days and the monthly rainfall total, as well as mean maximum and minimum temperatures, are not known.

Australia's Pacific Ocean islands

  • Rainfall in May was below average at both Lord Howe Island Aero and Norfolk Island Aero.
  • Lord Howe Island Aero recorded 117.2 mm for the month, which was 79% of its average rainfall for May.
  • Norfolk Island Aero recorded rainfall total of only 46.6 mm, which was 36% of its May average.
  • Mean maximum temperature was 0.5 °C and 1.3 °C above average at Lord Howe Island Aero and Norfolk Island Aero respectively.
  • Mean minimum temperature was 1.8 °C above average at both Lord Howe Island Aero and Norfolk Island Aero.
  • Lord Howe Island Aero had its highest May mean daily minimum temperature on record, and Norfolk Island had its highest May mean daily minimum temperature since 1999.

Australia's Antarctic and sub-Antarctic territories

  • Total monthly wind run was above average at all three Australian Antarctic stations.
  • The strongest wind gust recorded in May was 189 km/h at Mawson on the 27th.
  • At Casey, both mean maximum and mean minimum temperatures were much warmer than average, 2.0 °C and 2.7 °C respectively.
  • In contrast, both mean maximum and mean minimum temperatures at Mawson were below average, 0.5 °C and 1.5 °C respectively.
  • At Davis, mean maximum and mean minimum temperatures were within one degree of average.
  • The coldest temperature recorded at all three Antarctic stations during the month was −32.1 °C at Davis on the 5th.
  • The strongest wind gust recorded this month at Macquarie Island was 120 km/h on the 25th.
  • May was wetter than average at Macquarie Island, with precipitation recorded on all but one day during the month; the site recorded 130.0 mm for the month, which was 49% above its average.
  • Mean maximum and mean minimum temperatures were both above the May average at Macquarie Island.

Further information

Media
(03) 9669 4057

Record highest May temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Christmas Island Aero 30.7 on the 14th 30.5 on the 6th in 2016 48 27.9



Record highest May mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Norfolk Island Aero 22.3 = 22.3 in 2016 83 21.0



Record highest May mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Lord Howe Island Aero 18.2 18.1 in 2016 33 16.4

Highest May mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
May
Norfolk Island Aero 18.0 18.1 in 1999 16.2



Record highest May mean temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Norfolk Island Aero 20.2 20.1 in 2016 83 18.6



Summary statistics for May 2022
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Precipitation
(millimetres)
Mean for
May
2022
Diff
from
average
Highest for
May
2022
Mean for
May
2022
Diff
from
average
Lowest for
May
2022
Total for
May
2022
Average
for
May
Rank of
May
2022
Fraction of
May
average
Offshore Islands (district 200)
Christmas Island Aero 28.8 +0.9 30.7 14th 23.5 -0.4 21.5 30th 286.8 189.0 high 152%
Cocos Island Airport 29.4 +0.1 30.8 11th 25.7 +0.6 24.0 20th 48.4 190.8 v low 25%
Lord Howe Island Aero 22.1 +0.5 24.4 7th 18.2 +1.8 13.1 31st 117.2 149.0 average 79%
Norfolk Island Aero 22.3 +1.3 24.5 1st 18.0 +1.8 15.6 16th 46.6 129.2 low 36%
Antarctica and Macquarie Is. (district 300)
Casey -8.9 +2.0 -1.7 20th -15.7 +2.7 -27.6 6th 8.2 24.9 low 33%
Davis -12.5 +0.2 -2.7 21st -19.6 -0.7 -32.1 5th 3.1 9.4 low 33%
Macquarie Island 6.6 +0.7 8.8 3rd 3.6 +1.0 -0.8 21st 130.0 87.3 v high 149%
Mawson -13.9 -0.5 -4.3 30th -20.8 -1.5 -28.8 20th
Note: Precipitation values from Casey and Davis should be used with caution.

Daily maximum temperatures for May 2022
Offshore Islands (200)12345678910111213141516171819202122232425262728293031
Christmas Island Aero28.929.228.528.128.529.029.127.829.829.230.429.729.630.729.429.029.029.329.029.027.727.628.728.628.927.629.528.226.528.328.8
Cocos Island Airport30.530.330.129.128.630.829.529.729.029.329.630.630.328.528.929.728.429.129.429.529.228.229.129.028.929.2
Lord Howe Island Aero22.723.023.523.324.024.224.420.822.022.122.122.222.523.323.823.022.823.021.721.020.520.321.020.921.120.520.620.621.121.420.7
Norfolk Island Aero24.524.323.823.223.523.623.523.023.322.222.421.921.221.422.622.523.724.223.722.020.620.219.520.519.320.421.222.122.722.722.1
Antarctica and Macquarie Is. (300)12345678910111213141516171819202122232425262728293031
Casey-5.2-10.1-16.8-16.1-16.4-16.0-14.5-16.2-11.8-8.2-7.9-8.2-6.8-2.2-2.9-3.4-1.9-2.8-2.3-1.7-6.7-14.3-7.0-5.5-6.3-5.7-3.3-10.0-10.7-16.1-17.6
Davis-12.6-20.2-26.1-26.1-5.6-3.7-4.3-6.4-10.5-16.8-15.0-13.9-12.6-14.1-20.6-17.4-12.5-17.7-21.6-15.6-2.7-3.5-6.0-16.8-18.0-12.9-6.2-6.4-7.0-8.4-7.6
Macquarie Island7.88.38.87.07.06.66.36.77.98.47.46.46.34.77.96.87.16.93.74.93.86.76.04.06.57.07.66.27.17.05.9
Mawson-19.7-19.3-21.8-13.6-12.4-10.3-7.6-8.4-12.0-14.5-18.9-21.1-21.5-18.2-20.8-16.8-12.7-14.9-23.5-21.8-10.3-8.7-11.6-15.9-9.9-10.3-9.9-9.3-5.3-4.3-6.7
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 May 2022
Offshore Islands (200)12345678910111213141516171819202122232425262728293031
Christmas Island Aero22.324.924.324.123.625.124.723.323.526.025.225.124.922.922.822.822.722.624.022.823.122.022.424.524.622.522.123.622.421.522.8
Cocos Island Airport26.827.427.427.626.324.426.124.525.327.025.825.725.424.825.826.024.526.124.026.525.825.725.826.126.124.524.025.324.524.9
Lord Howe Island Aero20.918.418.419.820.420.921.317.816.618.618.118.018.120.819.321.319.713.819.116.316.515.717.016.717.317.917.519.219.216.413.1
Norfolk Island Aero19.320.320.419.119.419.419.018.017.117.618.317.217.818.417.215.618.118.418.218.617.316.216.015.617.216.817.117.319.519.019.5
Antarctica and Macquarie Is. (300)12345678910111213141516171819202122232425262728293031
Casey-9.9-13.1-25.2-25.6-18.6-27.6-24.2-21.5-24.4-25.8-15.0-11.2-18.0-17.4-7.2-5.6-6.7-6.6-11.7-5.9-6.7-16.1-22.4-21.2-11.0-10.6-9.5-14.9-14.9-17.5-21.4
Davis-23.0-20.9-27.7-32.0-32.1-26.9-6.2-7.1-11.4-19.3-22.0-18.8-17.1-16.7-21.9-25.7-25.9-17.9-22.6-28.8-29.0-15.8-7.6-17.0-23.6-23.5-18.7-16.8-8.3-11.3-12.2
Macquarie Island5.35.95.66.54.44.75.94.84.33.15.93.63.82.52.44.44.55.21.00.3-0.8-0.42.42.20.51.46.24.44.32.55.6
Mawson-27.0-26.5-26.2-27.4-26.5-17.3-17.0-11.6-17.7-17.6-19.5-24.4-24.1-24.8-23.7-25.1-25.3-21.7-26.3-28.8-28.0-23.5-16.0-20.1-21.8-18.7-13.7-13.0-11.1-10.2-10.7
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 May 2022
Offshore Islands (200)12345678910111213141516171819202122232425262728293031
Christmas Island Aero 0.2 - 5.0 7.8 3.0 2.4 0.2 15.8 0.2 - - - 3.2 0.4 0.2 0.2 0.2 - 4.4 13.2 29.2 13.2 5.2 2.4 2.0 3.8 2.0 119 53.2 -
Cocos Island Airport

- -






0.4 - 0.4 4.0 1.6 12.2
0.6
1.0 - - - 1.0 0.2 11.6 14.0 1.4 - -
Lord Howe Island (Milky Way) - 26.8 - 1.2 0.8 0.4 1.4 30.6 10.0 - 0.6 2.0 0.6 - 2.6 0.4 27.0 0.2 - - 0.8 2.6 1.8 1.6 - 0.2 0.8 - - 1.6 16.4
Lord Howe Island Aero - 21.2 0.2 1.4 - - 1.4 28.2 7.0 0.2 0.4 0.2 0.2 - 2.6 0.4 27.8 - - 0.6 1.8 3.6 0.8 0.4 0.2 - 0.6 - - 1.2 16.8
Norfolk Island Aero 2.2 - 0.4 3.6 0.6 2.8 0.6 - 0.4 0.2 0.4 - - - - - - - - 2.4 0.4 - 3.2 11.8 - 3.0 1.2 2.4 10.4 0.2 0.4
Antarctica and Macquarie Is. (300)12345678910111213141516171819202122232425262728293031
Casey 2.4 0.6 - 0.4 0.4 - - - - 0.4 - - -
0.4 1.2 0.2 -

2.0 0.2 -
- - - - - - -
Davis - 0.4 - - - 0.2
- - - - 0.2 0.6 0.1 - - - - - - 0.6 - 0.4 - - - - - - 0.4 0.2
Macquarie Island 17.2 8.4 0.8 2.0 6.4 1.2 0.4 0.2 0.6 0.8 3.8 1.6 10.2 5.8 - 2.6 25.0 1.0 1.0 2.4 3.2 12.8 3.0 2.2 0.4 0.4 0.8 5.2 0.2 5.8 4.6
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 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 2 June 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

Climate