Wednesday, 1 July 2020 - Monthly Climate Summary for Remote Islands and Antarctica - Product code IDCKGC1RR0
Remote Islands and Antarctica in June 2020
Jump to a map of the areas covered in this summary
Australia's Indian Ocean islands: drier than average
- June began with a wet day on Christmas Island, but it ended up being a drier than average month, with no recorded rainfall for the second half of the month
- Rainfall was also very much below average at Cocos Island Airport, recording less than 20% of its June average and likely its driest June for more than 20 years (noting that an estimated 3 mm fell during power outages at the Airport, resulting some days of missing rainfall in the real-time reporting)
- Daytime temperatures were close to average at both Christmas Island Aero and Cocos Island Airport
- Night-time temperatures were warmer than average during most of the month
Australia's Pacific Ocean islands: drier than average at Norfolk
- At Norfolk Island Aero, light rainfall was recorded on most days during the month, however the total for June was less than half of average
- Rainfall for June was close to average at Lord Howe Island Aero, with heavy rain at times and four days recording more than 20 mm
- Both daytime and night-time temperatures were generally close to average at both Lord Howe Island Aero and Norfolk Island Aero
Australia's Antarctic and sub-Antarctic territories: cold at Casey, record warm end to the month at Macca
- Casey had cooler than average maximum and minimum temperatures throughout the first half of the month
- Casey recorded a minimum temperature of -30.6 °C on the 19th, the site's coldest temperature in June since -31.1 °C on 17 June 2016
- At Mawson and Davis, maximum and minimum temperatures were generally above average, apart from a cooler than average week through the middle of the month
- Precipitation at Macquarie Island was close to average, with precipitation recorded on most days during June
- On the 30th, Macquarie Island recorded a maximum temperature of 10.6 °C, its highest June temperature on record and highest for any month between May and October
- Mean maximum and mean minimum temperatures at Macquarie Island were both slightly warmer than average for June
Further information
- Media
- media@bom.gov.au (03) 9669 4057
Records Summaries Daily observations Important notes the top
| Record highest June temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for June |
|||
| Macquarie Island | 10.6 | on the 30th | 8.7 | on the 20th in 1974 | 73 | 5.1 |
Records Summaries Daily observations Important notes the top
| Summary statistics for June 2020 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Precipitation (millimetres) |
||||||||||
| Mean for June 2020 |
Diff from average |
Highest for June 2020 |
Mean for June 2020 |
Diff from average |
Lowest for June 2020 |
Total for June 2020 |
Average for June |
Rank of June 2020 |
Fraction of June average |
|||
| Offshore Islands (district 200) | ||||||||||||
| Christmas Island Aero | 27.0 | 0.0 | 27.8 | 4th | 23.8 | +0.5 | 21.5 | 2nd | 77.8 | 174.2 | average | 45% |
| Cocos Island Airport | 28.7 | +0.1 | 29.5 | 23rd | 25.5 | +1.0 | 24.2 | 2nd | 32.6 | 211.5 | v low | 15% |
| Lord Howe Island Aero | 20.0 | +0.1 | 22.9 | 1st | 14.5 | -0.3 | 8.9 | 7th | 164.0 | 168.2 | average | 98% |
| Norfolk Island Aero | 19.5 | +0.2 | 21.5 | 4th | 14.8 | +0.1 | 11.8 | 29th | 66.0 | 143.2 | low | 46% |
| Antarctica and Macquarie Island (district 300) | ||||||||||||
| Casey | -11.2 | -0.5 | -1.6 | 21st | -19.7 | -1.1 | -30.6 | 19th | 21.8 | 25.7 | average | 85% |
| Davis | -11.0 | +1.6 | -4.1 | 5th | -16.9 | +2.0 | -27.4 | 16th | 9.2 | 9.1 | average | 101% |
| Macquarie Island | 5.7 | +0.6 | 10.6 | 30th | 2.0 | +0.4 | -3.1 | 12th | 82.8 | 77.5 | average | 107% |
| Mawson | -12.5 | +1.0 | -6.8 | 9th | -18.4 | +1.2 | -26.1 | 20th | ||||
| Note: Precipitation values from Casey and Davis should be used with caution. | ||||||||||||
Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for June 2020 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Offshore Islands (200) | 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 | 27.2 | 26.9 | 27.4 | 27.8 | 27.5 | 27.2 | 27.1 | 26.8 | 27.1 | 27.6 | 26.9 | 26.7 | 27.0 | 26.9 | 26.7 | 27.4 | 27.1 | 27.0 | 27.5 | 26.6 | 26.8 | 26.7 | 27.1 | 26.1 | 26.8 | 27.7 | 27.2 | 27.2 | 26.2 | |
| Cocos Island Airport | 27.9 | 28.6 | 29.0 | 29.3 | 28.6 | 29.2 | 28.6 | 28.2 | 29.1 | 27.9 | 28.1 | 27.9 | 28.2 | 28.6 | 28.8 | 28.4 | 28.7 | 28.9 | 29.0 | 29.5 | 28.8 | 28.7 | 29.5 | 28.5 | 29.1 | 28.3 | 27.5 | 29.3 | 28.6 | 28.8 |
| Lord Howe Island Aero | 22.9 | 20.4 | 20.9 | 17.7 | 19.2 | 19.8 | 20.6 | 17.7 | 19.9 | 20.2 | 21.7 | 21.7 | 22.2 | 22.2 | 21.2 | 21.2 | 21.0 | 18.6 | 17.9 | 19.7 | 17.9 | 19.4 | 19.8 | 19.1 | 18.6 | 18.8 | ||||
| Norfolk Island Aero | 20.5 | 21.5 | 21.0 | 21.5 | 18.5 | 18.6 | 19.2 | 19.4 | 19.4 | 18.8 | 19.7 | 20.4 | 20.3 | 20.6 | 20.8 | 19.8 | 18.9 | 20.2 | 17.1 | 18.4 | 19.1 | 19.5 | 18.8 | 19.7 | 19.2 | 20.4 | 19.7 | 18.3 | 18.5 | 18.0 |
| Antarctica and Macquarie Island (300) | 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 | -13.8 | -21.3 | -16.5 | -19.8 | -14.2 | -14.8 | -17.1 | -17.5 | -22.3 | -8.2 | -7.7 | -16.8 | -13.0 | -14.0 | -18.0 | -10.4 | -20.8 | -5.5 | -1.6 | -1.8 | -1.6 | -5.1 | -12.2 | -4.4 | -3.5 | -3.2 | -4.0 | -5.5 | -11.7 | -8.4 |
| Davis | -14.7 | -13.9 | -10.3 | -6.8 | -4.1 | -4.7 | -8.4 | -7.1 | -6.9 | -10.4 | -9.2 | -8.2 | -12.9 | -20.1 | -21.2 | -21.3 | -21.4 | -16.9 | -12.1 | -6.6 | -5.1 | -9.9 | -7.3 | -8.0 | -6.4 | -9.7 | -13.7 | -8.8 | -10.5 | -13.4 |
| Macquarie Island | 7.4 | 6.5 | 6.3 | 6.6 | 3.6 | 4.6 | 6.1 | 6.7 | 6.6 | 5.6 | 4.8 | 5.2 | 6.6 | 7.9 | 6.8 | 6.7 | 5.6 | 6.5 | 6.5 | 3.4 | 2.5 | 3.4 | 4.1 | 4.3 | 5.0 | 5.4 | 5.1 | 5.8 | 5.4 | 10.6 |
| Mawson | -20.5 | -15.9 | -13.1 | -12.2 | -8.3 | -15.8 | -12.1 | -7.8 | -6.8 | -11.6 | -14.7 | -14.6 | -13.6 | -17.8 | -14.5 | -12.5 | -16.1 | -19.5 | -22.6 | -7.9 | -7.1 | -9.5 | -9.2 | -9.7 | -8.4 | -8.8 | -9.7 | -12.5 | -10.7 | -11.5 |
|
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 June 2020 | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Offshore Islands (200) | 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 | 22.5 | 21.5 | 22.5 | 23.5 | 25.0 | 24.4 | 22.2 | 24.3 | 24.1 | 24.3 | 23.7 | 23.6 | 23.9 | 23.8 | 23.9 | 24.6 | 24.3 | 24.2 | 24.2 | 24.0 | 23.7 | 24.0 | 24.2 | 23.9 | 24.1 | 23.9 | 23.7 | 23.5 | 24.1 | |
| Cocos Island Airport | 24.6 | 24.2 | 26.1 | 26.8 | 26.4 | 26.7 | 25.4 | 25.0 | 26.1 | 24.5 | 25.2 | 24.8 | 25.5 | 25.3 | 25.7 | 25.1 | 26.1 | 26.2 | 24.7 | 24.6 | 26.3 | 25.7 | 24.6 | 25.7 | 25.7 | 25.8 | 24.6 | 24.7 | 26.1 | |
| Lord Howe Island Aero | 16.1 | 18.2 | 13.8 | 13.8 | 14.6 | 10.0 | 8.9 | 14.2 | 13.8 | 16.8 | 18.2 | 17.4 | 19.5 | 17.2 | 18.0 | 10.6 | 10.7 | 16.5 | 13.6 | 13.6 | 11.9 | 12.8 | 11.6 | 14.7 | 16.9 | 16.4 | 11.8 | 15.4 | ||
| Norfolk Island Aero | 16.8 | 14.1 | 17.5 | 16.4 | 13.9 | 14.4 | 12.7 | 12.8 | 14.2 | 15.6 | 14.5 | 15.1 | 15.7 | 16.0 | 16.5 | 17.8 | 16.0 | 15.6 | 13.7 | 13.4 | 14.4 | 13.1 | 13.1 | 15.0 | 15.7 | 15.6 | 16.5 | 14.3 | 11.8 | 12.3 |
| Antarctica and Macquarie Island (300) | 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 | -18.6 | -22.5 | -25.7 | -23.5 | -27.8 | -22.2 | -24.4 | -26.8 | -26.6 | -27.1 | -28.0 | -18.6 | -21.5 | -21.7 | -22.9 | -22.3 | -22.1 | -28.9 | -30.6 | -7.0 | -8.3 | -6.6 | -14.3 | -18.2 | -17.8 | -8.1 | -8.6 | -9.1 | -14.3 | -17.7 |
| Davis | -17.5 | -17.3 | -22.9 | -16.3 | -16.1 | -7.8 | -9.3 | -10.2 | -12.6 | -12.7 | -13.8 | -13.7 | -13.6 | -21.2 | -25.5 | -27.4 | -24.3 | -26.8 | -24.1 | -20.1 | -19.7 | -10.6 | -16.6 | -15.8 | -11.6 | -11.8 | -14.0 | -21.2 | -16.1 | -16.3 |
| Macquarie Island | 6.5 | 3.1 | 2.1 | -1.2 | 0.6 | -1.4 | -2.6 | 1.8 | 3.0 | 4.2 | 1.1 | -3.1 | 3.3 | 4.8 | 5.5 | 3.2 | 0.9 | 0.1 | 5.3 | -0.2 | 1.5 | 1.2 | 1.9 | 2.3 | 1.6 | 2.4 | 4.0 | 1.4 | 2.3 | 3.0 |
| Mawson | -23.5 | -24.2 | -22.3 | -17.8 | -16.0 | -18.1 | -20.3 | -19.5 | -12.6 | -12.5 | -16.8 | -19.4 | -18.9 | -21.3 | -21.6 | -21.4 | -18.0 | -22.0 | -25.6 | -26.1 | -23.2 | -16.5 | -16.6 | -12.3 | -12.1 | -10.2 | -12.4 | -16.2 | -18.8 | -14.6 |
|
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 June 2020 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Offshore Islands (200) | 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 | 46.2 | 18.2 | - | 0.2 | 0.8 | 10.6 | - | - | - | 0.8 | 1.0 | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||
| Cocos Island Airport | 0.4 | 0.4 | 0.2 | - | - | 0.2 | - | 2.6 | 0.2 | 0.6 | 6.4 | 1.2 | - | - | - | 0.2 | 0.4 | 0.8 | 3.6 | 15.4 | - | ||||||||||
| Lord Howe Island (Milky Way) | 6.8 | 3.4 | 3.0 | 0.8 | 0.4 | 0.4 | - | 2.6 | 21.8 | 1.4 | - | 7.2 | - | 30.8 | 26.4 | - | - | 1.2 | 0.4 | 0.2 | 2.8 | 5.2 | 11.6 | 14.0 | 14.8 | 1.4 | 0.4 | 0.6 | 0.8 | 0.4 | |
| Lord Howe Island Aero | 8.6 | 3.2 | 1.6 | 3.2 | 0.2 | 0.4 | - | 2.4 | 22.4 | 1.0 | - | 7.2 | - | 26.6 | 30.0 | 0.6 | - | - | 1.2 | 2.2 | 8.8 | 18.6 | 25.6 | - | 0.2 | - | |||||
| Norfolk Island Aero | 1.2 | 0.2 | 1.8 | 0.2 | 0.4 | 0.2 | 0.8 | - | 0.8 | 0.6 | - | - | 4.4 | 1.0 | 0.6 | 0.2 | 13.0 | 4.6 | 1.4 | 0.4 | 0.4 | 0.8 | 1.0 | 17.8 | 1.0 | 6.6 | 0.2 | 2.0 | 2.8 | 1.6 | |
| Antarctica and Macquarie Island (300) | 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 | - | - | - | 0.2 | - | 2.6 | 0.2 | - | - | - | 1.4 | - | - | 7.8 | - | - | 3.8 | - | - | 0.6 | 4.2 | 0.6 | 0.2 | - | 0.2 | - | - | - | |||
| Davis | → | 1.6 | - | 1.8 | 1.0 | 0.2 | - | - | 1.2 | 1.2 | - | - | - | - | - | - | - | - | 2.0 | - | - | - | - | - | - | 0.2 | - | ||||
| Macquarie Island | 1.2 | 10.6 | 12.4 | 0.8 | 1.6 | 1.6 | 5.0 | 4.4 | 3.4 | 1.6 | 6.2 | 1.8 | 0.4 | 0.4 | 8.8 | 1.8 | 3.6 | 1.2 | 1.8 | 8.4 | 0.6 | - | 0.2 | 1.0 | 0.2 | 0.2 | - | - | 3.2 | 0.4 | |
|
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, 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 3 pm on Wednesday 1 July 2020. 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
- media@bom.gov.au (03) 9669 4057
