Friday, 31 August 2007 - Monthly Climate Summary for Adelaide Metro - Product code IDCKGC13R0

Adelaide Metro in August 2007
Rain Below Average, Maximum Temperatures Soar.

Summary

Adelaide recorded well below average rainfall this winter and for August. Maximum temperatures were well above average for the month, while monthly mean minimum temperature is close to average.

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Rainfall

Adelaide's rainfall for August 2007 was 29.6 mm, recorded on 11 days. This is 38.3 mm below the average of 67.9 mm on 17 days. Last year, 11.4 mm was recorded in August on 8 days. This is the sixteenth driest August in the 168 years of rainfall records taken at the South Australian Regional Office. The driest August on record occurred in 1944 when 8.4 mm was recorded.

The total rainfall for winter 2007 was 160.2 mm on 45 days. Last year 59.8 mm of rain was recorded over 28 days during winter. The average winter rainfall for Kent Town is 225.8 mm.

The total rainfall for the first eight months of 2007 was 351.4 mm on 79 days. Last year 219.2 mm on 66 days was recorded over the same period. The average rainfall for the first eight months is 383.5 mm.

Temperature

All Adelaide metropolitan temperature recording sites reached new highest maximum temperature records for the month of August on Thursday 30th.

The mean maximum temperature recorded at the South Australian Regional Office (Kent Town) for August 2007 was 18.5°C*, which is 1.8°C* above the average August mean maximum temperature of 16.7°C. The mean August maximum last year was 18.7°C. The hottest maximum temperature recorded in the Adelaide metropolitan area was 30.8°C on the 30th at Edinburgh, whilst the lowest was 13.2°C at Noarlunga on the 17th.

The mean minimum temperature for August 2007 at the South Australian Regional Office (Kent Town) was 8.4°C, which is 0.2°C above the normal August mean minimum of 8.2°C. Last August, the mean minimum was 7.6°C. The coldest minimum temperature recorded in the Adelaide metropolitan area was 0.1°C on the 13th at the Parafield Airport, whilst the warmest night was 16.0°C at Noarlunga on the 27th.

*calculated to 3pm 31 August 2007

Some sites had their highest August temperature on record.

Further information

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au

Extremes

Hottest day
Highest temperature		 30.8°C at Edinburgh RAAF on the 30th
Warmest days on average
Highest mean daily maximum temperature		 18.6°C at Parafield Airport
Coolest days on average
Lowest mean daily maximum temperature		 17.3°C at Noarlunga
Coldest day
Lowest daily maximum temperature		 13.2°C at Noarlunga on the 17th
Coldest night
Lowest temperature		 0.1°C at Parafield Airport on the 13th
Coolest nights on average
Lowest mean daily minimum temperature		 6.1°C at Edinburgh RAAF
Warmest nights on average
Highest mean daily minimum temperature		 9.2°C at Noarlunga
Warmest night
Highest daily minimum temperature		 16.0°C at Noarlunga on the 27th
Wettest overall
Highest total rainfall		 29.6 mm at Adelaide (Kent Town)
Highest wind gust
 83 km/h at Edinburgh RAAF on the 30th


Records

Record highest August temperature
Highest temperature
in August 2007 (°C) 		Previous highest
for August		 Years of
record		 Normal for
August
Adelaide Airport 29.9 on the 30th 27.3 on the 25th in 1977 53 15.9
Parafield Airport 30.4 on the 30th 28.2 on the 25th in 1977 51 16.2
Edinburgh RAAF 30.8 on the 30th 29.3 on the 25th in 1977 35 16.5
Adelaide (Kent Town) 30.4 on the 30th 27.8 on the 29th in 1982 31 16.6


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Summaries

Summary statistics for August 2007
Maximum temperatures
for August
(°C)		 Minimum temperatures
for August
(°C)		 Rainfall
for August
(millimetres)
Mean for
August
2007		 Diff
from
normal		 Highest for
August
2007		 Mean for
August
2007		 Diff
from
normal		 Lowest for
August
2007		 Total for
August
2007		 Normal
for
August		 Rank of
August
2007		 Fraction of
August
normal
Adelaide 18.5 +1.8 30.4 30th 8.4 +0.3 3.8 13th 29.6 67.9 low 42%
Adelaide Airport 18.0 +2.2 29.9 30th 7.4 −0.1 2.1 13th 15.8 49.4 very low 32%
Edinburgh RAAF 18.4 +1.9 30.8 30th 6.1 −0.4 0.8 13th 14.4 49.7 low 29%
Noarlunga 17.3 27.3 30th 9.2 5.0 20th 13.6
Parafield Airport 18.6 +2.5 30.4 30th 6.3 −0.4 0.1 13th 12.6 54.1 very low 23%

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Notes

This statement has been prepared based on information available at 2 pm on Friday 31 August 2007. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Normals 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 20 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of "normal" rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, normal in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of normal shows how much rain has fallen this time as a percentage of the long-term mean.

Further information

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au