Monday, 2 September 2019 - Monthly Climate Summary for Remote Islands and Antarctica - Product code IDCKGC1RR0
Remote Islands and Antarctica in August 2019
Jump to a map of the areas covered in this summary
Australia's Indian Ocean islands
- Temperatures were below average on the Cocos (Keeling) Islands, especially during the middle of the month
- Cocos Islands Airport was half a degree cooler than average, registering its lowest August mean daily maximum temperature since 1997 and its lowest August mean temperature since 1997
- Rainfall of 88.2 mm at Cocos Islands Airport was 74% of the long-term August average
- The Cocos (Keeling) Islands have been much warmer than usual so far this year
- Christmas Island's temperatures were below average for much of August, with the mean maximum temperature for the month half a degree below average
- There was only 16.0 mm of rainfall at Christmas Island Airport, about two-fifths of the August average
- Rainfall on Christmas Island has been well below average so far this year
Australia's Pacific Ocean islands
- Mild weather was common on Lord Howe Island, with the mean maximum temperature 0.6 °C above average and the mean minimum temperature 0.3 °C above average
- Lord Howe Island Airport received 129.4 mm of rain for the month, somewhat above the August average
- Lord Howe Island has been much drier and warmer than usual so far this year
- On Norfolk Island, the mean maximum temperature was 0.6 °C above average and the mean minimum temperature 0.5 °C above average
- Norfolk Island Airport had a minimum temperature of 18.9 °C on the morning of the 11th, its warmest August night (highest daily minimum temperature) on record
- Only 51.8 mm of rain was recorded at Norfolk Island Airport, only two-fifths of the long-term average
- Norfolk Island has been drier and much warmer than usual so far this year
Australia's Antarctic and sub-Antarctic territories
- Temperatures were well above average at Mawson, going above -10 °C on thirteen days, well above the August average of about five days
- At Davis, temperatures were more than three degrees warmer than average for August, with sixteen days above -10 °C compared to an average of about nine days that warm
- Casey was warmer than average for most of the month, including a maximum of -2.9 °C on the 4th, but turned cold in the final week with a minimum of -28.7 °C on the 28th
- Mawson and Casey have been warmer than usual so far this year, but the mean temperature at Davis is close to the long-term average
- Macquarie Island was colder than usual, with a mean maximum temperature 0.5 °C below average and a mean minimum temperature 1.1 °C below average
- Total precipitation of 113.8 mm on Macquarie Island was more than 50% above the long-term average
- Macquarie Island has been much wetter and warmer than usual so far this year
Further information
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
Records Summaries Daily observations Important notes the top
| Lowest August mean daily maximum temperature for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (°C) |
Most recent lower |
Average for August |
|||
| Cocos Island Airport | 27.4 | 27.1 | in 1997 | 28.0 | |
| Record highest August daily minimum temperature | ||||||
|---|---|---|---|---|---|---|
|
New record (°C) |
Old record |
Years of record |
Average for August |
|||
| Norfolk Island Aero | 18.9 | on the 11th | 18.3 | on the 27th in 1971 | 81 | 13.2 |
| Lowest August mean temperature for at least 20 years | |||||
|---|---|---|---|---|---|
|
Observed (°C) |
Most recent lower |
Average for August |
|||
| Cocos Island Airport | 25.5 | 25.2 | in 1997 | 26.0 | |
Records Summaries Daily observations Important notes the top
| Summary statistics for August 2019 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures (°C) |
Minimum temperatures (°C) |
Precipitation (millimetres) |
||||||||||
| Mean for August 2019 |
Diff from average |
Highest for August 2019 |
Mean for August 2019 |
Diff from average |
Lowest for August 2019 |
Total for August 2019 |
Average for August |
Rank of August 2019 |
Fraction of August average |
|||
| Offshore Islands (district 200) | ||||||||||||
| Christmas Island Aero | 25.6 | -0.5 | 26.6 | 3rd | 21.9 | -0.3 | 19.9 | 12th | 16.0 | 41.2 | average | 39% |
| Cocos Island Airport | 27.4 | -0.6 | 28.7 | 29th | 23.5 | -0.4 | 20.9 | 7th | 88.2 | 119.2 | average | 74% |
| Lord Howe Island Aero | 19.6 | +0.6 | 21.9 | 17th | 13.8 | +0.3 | 9.6 | 16th | 129.4 | 110.4 | average | 117% |
| Norfolk Island Aero | 18.9 | +0.6 | 20.6 | 10th | 13.7 | +0.5 | 11.2 | 7th | 51.8 | 125.3 | v low | 41% |
| Antarctica and Macquarie Island (district 300) | ||||||||||||
| Casey | -10.8 | 0.0 | -2.9 | 4th | -17.5 | +1.1 | -28.7 | 28th | 9.9 | 19.5 | low | 51% |
| Davis | -10.8 | +3.3 | -5.2 | 4th | -17.7 | +3.1 | -32.6 | 17th | 5.0 | 6.8 | average | 74% |
| Macquarie Island | 4.6 | -0.5 | 6.7 | 18th | 0.5 | -1.1 | -3.4 | 4th | 113.8 | 74.9 | v high | 152% |
| Mawson | -13.1 | +2.3 | -7.3 | 22nd | -20.3 | +1.3 | -29.6 | 16th | ||||
| Note: Precipitation values from Casey and Davis should be used with caution. | ||||||||||||
Records Summaries Daily observations Important notes the top
| Daily maximum temperatures for August 2019 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 31 |
| Christmas Island Aero | 26.1 | 26.0 | 26.6 | 25.7 | 25.9 | 25.2 | 25.9 | 25.5 | 25.9 | 25.5 | 25.2 | 24.4 | 24.4 | 25.8 | 25.6 | 25.5 | 25.3 | 24.9 | 25.0 | 25.6 | 25.4 | 25.8 | 26.1 | 26.0 | 25.8 | 25.1 | 25.5 | 26.1 | 25.9 | 26.3 | 26.5 |
| Cocos Island Airport | 28.4 | 28.1 | 28.1 | 28.1 | 27.8 | 26.0 | 26.6 | 26.3 | 26.8 | 27.7 | 27.6 | 26.8 | 27.7 | 26.6 | 27.8 | 26.9 | 26.7 | 27.3 | 27.7 | 26.6 | 28.0 | 27.6 | 27.0 | 26.6 | 26.9 | 27.5 | 28.4 | 28.7 | 27.8 | 28.5 | |
| Lord Howe Island Aero | 19.6 | 19.4 | 18.7 | 19.4 | 18.8 | 20.1 | 20.9 | 19.4 | 21.1 | 18.2 | 18.0 | 18.2 | 18.3 | 19.1 | 18.7 | 20.9 | 21.9 | 18.7 | 20.9 | 18.9 | 19.7 | 19.8 | 17.6 | 19.3 | 21.0 | 19.9 | 20.1 | 20.7 | 20.5 | 20.1 | 19.6 |
| Norfolk Island Aero | 17.6 | 18.9 | 17.7 | 19.1 | 18.4 | 18.1 | 19.1 | 20.0 | 20.3 | 20.6 | 20.5 | 20.2 | 19.4 | 19.5 | 18.2 | 17.5 | 19.3 | 19.4 | 18.8 | 19.2 | 19.2 | 19.7 | 17.1 | 17.8 | 16.4 | 18.6 | 18.7 | 19.0 | 19.3 | 20.1 | 18.3 |
| 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 | 31 |
| Casey | -14.5 | -8.0 | -4.9 | -2.9 | -6.9 | -5.3 | -7.9 | -4.5 | -5.0 | -8.8 | -5.0 | -4.8 | -7.1 | -10.3 | -5.5 | -6.6 | -7.4 | -7.3 | -7.7 | -5.9 | -8.5 | -13.6 | -15.6 | -16.4 | -21.9 | -22.5 | -23.6 | -20.4 | -19.0 | -17.1 | -18.7 |
| Davis | -19.5 | -12.0 | -6.5 | -5.2 | -6.1 | -5.7 | -7.4 | -9.9 | -11.9 | -8.5 | -7.7 | -11.3 | -14.6 | -13.7 | -17.8 | -21.1 | -9.7 | -8.0 | -7.5 | -6.9 | -6.9 | -5.8 | -6.2 | -8.3 | -13.0 | -17.5 | -15.7 | -12.7 | -11.4 | -13.0 | -12.8 |
| Macquarie Island | 4.9 | 6.7 | 1.2 | 2.6 | 4.3 | 5.4 | 5.6 | 0.7 | 1.4 | 3.7 | 3.8 | 2.9 | 5.2 | 5.6 | 2.4 | 5.2 | 6.4 | 6.7 | 6.5 | 2.8 | 3.7 | 4.3 | 6.2 | 4.6 | 5.3 | 5.9 | 6.3 | 4.4 | 5.0 | 5.7 | 6.5 |
| Mawson | -14.6 | -14.8 | -16.4 | -9.4 | -9.3 | -8.0 | -7.8 | -8.8 | -12.6 | -18.2 | -15.0 | -12.6 | -16.8 | -23.9 | -24.7 | -19.4 | -18.0 | -17.4 | -8.3 | -8.7 | -8.4 | -7.3 | -8.8 | -9.9 | -12.8 | -13.0 | -17.6 | -13.3 | -10.7 | -9.1 | -9.8 |
|
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 August 2019 | |||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 31 |
| Christmas Island Aero | 22.4 | 22.6 | 22.9 | 22.8 | 21.4 | 20.5 | 20.7 | 22.3 | 22.2 | 21.4 | 21.3 | 19.9 | 20.5 | 21.2 | 22.5 | 22.5 | 22.5 | 21.1 | 21.4 | 22.1 | 22.1 | 22.4 | 22.8 | 22.3 | 21.7 | 22.0 | 21.6 | 22.1 | 22.0 | 22.4 | 22.3 |
| Cocos Island Airport | 25.2 | 25.0 | 25.3 | 25.7 | 24.6 | 21.4 | 20.9 | 22.4 | 22.1 | 24.2 | 22.1 | 22.6 | 24.0 | 22.4 | 22.6 | 23.7 | 23.0 | 23.2 | 23.8 | 22.9 | 23.7 | 22.9 | 24.4 | 24.2 | 23.4 | 22.6 | 23.9 | 23.8 | 24.4 | 24.5 | 24.1 |
| Lord Howe Island Aero | 13.8 | 13.8 | 11.4 | 15.6 | 12.0 | 10.9 | 14.7 | 13.2 | 13.2 | 15.9 | 11.5 | 12.2 | 13.9 | 14.9 | 14.9 | 9.6 | 17.8 | 12.1 | 15.4 | 12.6 | 15.1 | 15.3 | 12.1 | 13.9 | 13.9 | 15.2 | 14.2 | 13.9 | 14.0 | 14.3 | 15.6 |
| Norfolk Island Aero | 13.9 | 13.6 | 13.4 | 14.3 | 14.4 | 12.3 | 11.2 | 14.6 | 15.8 | 13.9 | 18.9 | 16.3 | 16.1 | 14.8 | 12.4 | 12.6 | 11.7 | 12.3 | 14.0 | 12.4 | 14.0 | 14.2 | 12.9 | 11.3 | 13.4 | 13.5 | 12.2 | 12.9 | 11.9 | 13.8 | 15.6 |
| 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 | 31 |
| Casey | -20.8 | -20.5 | -21.0 | -12.3 | -8.1 | -11.1 | -11.7 | -16.1 | -15.3 | -9.7 | -17.4 | -13.7 | -9.6 | -13.1 | -18.8 | -17.6 | -11.9 | -12.7 | -13.6 | -12.0 | -10.8 | -19.1 | -17.6 | -23.2 | -24.6 | -28.5 | -28.6 | -28.7 | -26.7 | -25.1 | -23.7 |
| Davis | -27.1 | -27.5 | -22.8 | -12.6 | -9.6 | -11.2 | -8.7 | -10.2 | -13.2 | -15.8 | -15.2 | -24.6 | -22.9 | -17.9 | -20.4 | -21.4 | -32.6 | -31.8 | -10.3 | -10.3 | -12.3 | -14.5 | -10.1 | -9.5 | -15.8 | -20.8 | -21.1 | -21.4 | -20.8 | -15.6 | -19.9 |
| Macquarie Island | 4.0 | 1.3 | -1.0 | -3.4 | -1.7 | 1.5 | 3.0 | 0.3 | -1.7 | -1.2 | 1.1 | -2.7 | -2.8 | -2.4 | 1.6 | -0.4 | 0.5 | 5.0 | 5.8 | 2.6 | -1.3 | 0.9 | 0.5 | 0.1 | -0.1 | 1.3 | 2.5 | 2.7 | -2.2 | -1.7 | 3.3 |
| Mawson | -28.4 | -19.8 | -21.4 | -21.1 | -19.0 | -11.8 | -12.2 | -10.2 | -14.2 | -24.0 | -24.9 | -22.9 | -20.3 | -26.5 | -29.1 | -29.6 | -28.9 | -26.3 | -25.7 | -19.9 | -17.1 | -14.9 | -14.8 | -16.4 | -16.1 | -20.8 | -23.4 | -20.5 | -14.5 | -13.4 | |
|
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 August 2019 | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 31 | |
| Christmas Island Aero | - | - | - | - | 0.4 | 0.4 | 2.8 | - | - | 2.8 | 2.0 | 3.0 | 0.2 | - | - | - | 1.2 | 3.0 | - | - | - | - | - | - | - | 0.2 | - | - | ||||
| Cocos Island Airport | - | - | - | - | - | 6.4 | 6.4 | 3.8 | 10.6 | - | 4.0 | 14.6 | 0.2 | 9.8 | 2.2 | 2.0 | 18.8 | - | 1.0 | 1.8 | 0.2 | 0.2 | 0.8 | 2.4 | 2.8 | - | - | - | 0.2 | |||
| Lord Howe Island (Milky Way) | 3.8 | 1.0 | 2.0 | - | 1.8 | - | 0.2 | 1.8 | 17.2 | - | 11.0 | 4.8 | - | - | - | - | - | - | - | 4.4 | 1.2 | 7.4 | 10.4 | 1.4 | - | 3.4 | - | 32.8 | 6.4 | 5.4 | 5.2 | |
| Lord Howe Island Aero | 3.2 | 0.6 | 2.2 | 0.8 | 1.4 | - | 1.0 | 1.8 | 30.4 | 0.2 | 8.6 | 6.6 | 0.4 | - | - | - | - | - | - | 2.6 | 1.8 | 5.2 | 10.4 | 0.4 | - | 1.4 | 0.2 | 33.2 | 9.8 | 4.6 | 2.6 | |
| Norfolk Island Aero | 0.6 | 1.0 | 0.4 | 0.6 | 0.4 | 1.8 | - | 5.8 | 1.2 | 4.0 | - | 0.6 | - | - | 1.0 | 1.2 | - | 3.2 | 0.2 | - | 6.0 | 5.0 | 10.0 | 1.8 | - | - | 2.8 | 0.8 | - | - | 3.4 | |
| 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 | 31 | |
| Casey | - | - | 2.0 | 3.0 | - | - | - | - | 2.1 | - | - | 0.8 | 2.0 | - | - | - | - | - | - | - | - | - | - | - | - | - | ||||||
| Davis | - | - | - | - | - | - | - | - | 0.4 | 3.2 | - | - | - | 0.8 | - | - | - | - | - | - | - | - | - | - | - | 0.6 | - | - | ||||
| Macquarie Island | 0.8 | 0.2 | 4.4 | 1.4 | 4.6 | 5.8 | 2.6 | 0.8 | - | - | 0.4 | 2.8 | 3.2 | 1.0 | 4.0 | 18.6 | 1.0 | 0.6 | 7.6 | 6.2 | 3.4 | 10.0 | 0.6 | 9.4 | 1.0 | 3.6 | 5.0 | 4.4 | 2.6 | 3.6 | 4.2 | |
|
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 | ||||||||||||||||||
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 1 pm on Monday 2 September 2019. 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
- Enquiries
- helpdesk.climate@bom.gov.au
