Remote Islands and Antarctica in February 2018

Australia's Indian Ocean islands

  • Daytime temperatures above average on both Christmas and the Cocos (Keeling) islands, with nights just a little cooler than average
  • Rainfall for the month a bit above average at Cocos Islands Airport, and somewhat below average at Christmas Island Airport

Australia's Pacific Ocean islands

  • With strong winds and cloudy skies from the decaying tropical cyclone Gita, and nearby sea surface temperatures much warmer than usual, the temperature at Norfolk Island Airport did not drop below 24.4 °C on the 19th, the highest daily minimum temperature in 79 years of record; on the 18th the minimum was a near-record 24.2 °C and on the 20th it was 24.0 °C
  • Overall, overnight temperatures well above average on Norfolk Island, whilst daytime temperatures were a little above average
  • Rainfall on Norfolk Island somewhat below the long-term average
  • Lord Howe Island's daytime temperatures were above average, but cool nights near the start of the month and again around the 22nd meant the mean minimum temperature was a little below average
  • Lord Howe Island airport recorded rainfall of 39.4 mm for the month, with 27 mm of that falling during the morning of the 27th

Australia's Antarctic and sub-Antarctic territories

  • Temperatures were above average at Davis and Casey
  • Daytime temperatures at Mawson above average, but nights a little below average following a string of cold nights starting in the middle of the month
  • Macquarie Island a little cooler than average by night and a little warmer than average by day
  • Rainfall on Macquarie Island a little below average, with 31 mm falling in a wet day on the 24th as a trough passed by

Further information

Media
(03) 9669 4057
Enquiries

Record highest February daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
February
Norfolk Island Aero 24.4 on the 19th 24.3 on the 20th in 2009 79 19.7



Summary statistics for February 2018
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Precipitation
(millimetres)
Mean for
February
2018
Diff
from
average
Highest for
February
2018
Mean for
February
2018
Diff
from
average
Lowest for
February
2018
Total for
February
2018
Average
for
February
Rank of
February
2018
Fraction of
February
average
Offshore Islands (district 200)
Christmas Island Aero 28.6 +0.6 29.6 19th 22.6 -0.1 20.6 8th 295.8 343.3 average 86%
Cocos Island Airport 30.3 +0.3 32.1 9th 25.0 -0.1 23.0 23rd 224.2 192.1 average 117%
Lord Howe Island Aero 26.3 +0.6 29.0 17th 20.6 -0.4 17.0 22nd 39.4 103.2 average 38%
Norfolk Island Aero 25.6 +0.7 28.3 27th 21.0 +1.3 17.9 26th 84.0 96.3 average 87%
Antarctica and Macquarie Island (district 300)
Casey -0.1 0.0 3.4 14th -4.9 +0.1 -9.5 9th 41.6 16.1 v high 258%
Davis 0.4 +0.6 6.6 5th -4.3 +0.3 -10.8 28th 3.6 3.8 average 95%
Macquarie Island 8.8 +0.1 10.4 11th 5.2 -0.1 0.6 5th 82.0 85.7 average 96%
Mawson -1.5 -0.1 2.1 6th -7.9 -0.6 -14.3 27th
Note: Precipitation values from Casey and Davis should be used with caution.

Daily maximum temperatures for February 2018
Offshore Islands (200)12345678910111213141516171819202122232425262728
Christmas Island Aero28.628.927.529.228.828.227.428.129.029.327.928.028.328.729.229.428.629.029.628.828.427.627.628.929.228.229.328.4
Cocos Island Airport29.629.430.129.929.930.730.330.532.129.630.530.830.930.530.930.430.430.431.331.131.130.729.827.529.230.530.029.9
Lord Howe Island Aero24.023.424.824.925.324.825.224.925.525.627.428.428.528.928.727.529.027.327.426.225.024.925.726.527.228.125.824.7
Norfolk Island Aero26.424.424.224.524.624.324.424.525.123.224.524.924.925.826.326.225.726.727.527.426.324.625.225.325.927.128.328.0
Antarctica and Macquarie Island (300)12345678910111213141516171819202122232425262728
Casey1.7-1.0-0.1-0.3-0.8-1.20.61.6-0.7-0.5-0.12.92.63.42.52.5-0.10.8-0.20.6-0.2-1.0-1.9-2.9-4.5-2.9-2.0-1.5
Davis0.41.93.13.66.63.33.21.62.0-2.0-0.91.20.31.70.11.5-1.4-0.3-0.80.00.41.81.4-2.3-3.2-5.0-3.3-4.7
Macquarie Island7.98.29.67.15.68.58.310.19.98.610.410.29.78.59.29.59.49.07.67.98.48.68.38.38.09.810.09.7
Mawson0.0-1.81.60.80.12.10.31.50.30.20.3-2.30.8-1.6-3.8-0.8-0.3-4.6-1.2-3.6-0.9-0.8-1.8-3.1-5.8-5.3-5.3-6.5
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 February 2018
Offshore Islands (200)12345678910111213141516171819202122232425262728
Christmas Island Aero22.723.722.723.021.922.321.320.622.322.822.422.923.222.823.223.722.821.722.422.623.723.222.321.922.623.223.3
Cocos Island Airport24.825.625.623.625.225.023.523.726.425.426.726.225.026.525.724.323.626.124.626.126.126.923.025.723.023.524.323.8
Lord Howe Island Aero20.417.817.319.617.417.920.319.520.320.117.421.123.023.223.823.119.123.123.323.218.317.020.321.222.624.122.020.8
Norfolk Island Aero22.820.719.019.620.119.518.719.220.320.821.420.021.021.622.022.423.124.224.424.022.019.720.119.319.917.921.623.0
Antarctica and Macquarie Island (300)12345678910111213141516171819202122232425262728
Casey-3.7-2.4-5.2-2.6-2.6-3.3-3.7-4.0-9.5-9.2-6.2-3.0-2.7-6.3-5.6-5.6-6.4-5.5-2.9-2.4-3.6-3.9-4.2-4.5-6.5-6.3-6.5-8.7
Davis-4.4-3.8-2.6-2.2-1.7-3.5-4.6-2.4-1.8-3.8-4.3-4.2-3.7-4.6-1.0-2.6-3.1-4.0-5.2-5.7-6.7-5.4-2.2-5.9-5.6-7.7-7.6-10.8
Macquarie Island3.72.55.02.90.60.85.37.45.97.17.37.77.23.54.76.55.56.14.84.35.15.95.14.94.14.67.78.2
Mawson-5.2-5.1-4.6-5.0-2.1-1.7-4.5-6.8-5.4-8.7-8.8-6.8-6.2-7.6-8.8-7.6-9.3-9.5-11.0-10.3-8.6-7.4-9.1-11.1-12.4-11.4-14.3-12.4
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 February 2018
Offshore Islands (200)12345678910111213141516171819202122232425262728
Christmas Island Aero 0.2 2.6 10.6 13.6 3.8 2.4 2.0 18.2 - 0.4 6.0 0.2 13.0 6.8 24.4 - 1.0 - - 5.0 26.0 24.4 60.6 3.4 0.6 66.6 4.0
Cocos Island Airport - - - - - - 0.2 0.2 - 11.2 0.2 - 1.0 - - - 4.4 - - - 2.2 - 37.2 2.8 71.6 63.2 14.0 16.0
Lord Howe Island (Milky Way) 2.2 2.2 3.2 3.4 0.6 3.8 0.2 0.4 - - - - 0.6 - 0.4 - - - 1.0 3.6 - - - - 33.2 -

Lord Howe Island Aero 2.2 3.6 1.6 1.0 0.2 - - 0.4 0.2 - - - - - 0.2 0.2 - - 0.4 2.0 - - - - - - 27.2 0.2
Norfolk Island Aero 1.8 0.6 0.2 -
- - 0.8 48.4 2.6 11.0 2.6 0.6 10.0 - - 0.4 - - - - 3.2 - - - 0.4 1.4 -
Antarctica and Macquarie Island (300)12345678910111213141516171819202122232425262728
Casey - - - 17.6 14.8 0.6 2.8 - - - - - -
- - - 1.0 1.4 - 0.2 - - - 2.6 0.6 - -
Davis - -
- - - - - - 0.8 0.2 - - - - 1.8
- - - - - - - - 0.8 - -
Macquarie Island 4.2 2.8 0.2 2.8 2.8 1.8 0.4 3.8 0.2 - 0.8 1.0 4.4 - - 6.8 2.4 1.6 6.4 1.0 - 1.0 1.6 0.8 31.0 0.8 0.2 3.2
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 first 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 2 pm on Thursday 1 March 2018. 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
Enquiries