Thursday, 31 July 2008 - Monthly Climate Summary for Adelaide Metro & Hills - Product code IDCKGC13R0

Adelaide Metro & Hills in July 2008
Relatively normal but cool July

Summary

  • Rainfall has been near normal for July 2008 in the Adelaide metropolitan area.
  • Above average rainfall in the Adelaide Hills.
  • Adelaide metropolitan area's temperature within 0.5°C of the July average.

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Rainfall

Adelaide Regional Office rainfall for July 2008 was 72.2 mm, recorded on 21 days. This is 2.7 mm below the normal of 74.9 mm on 17 days. ( The Adelaide Regional Office rainfall total is from the manually observed 203 mm rain gauge. This may differ from totals on the Bureau's webpage as these may be from the automatic tipping bucket rain gauge).

Many locations in the Adelaide Hills area recorded above average rainfall for July. The highest reading was 263.2 mm at Woodhouse.

The total rainfall for the first 7 months of 2008 at the Adelaide Regional Office was 239.4 mm, which is 79.8 mm below the long-term average of 319.2 mm. Last year 325.0 mm was recorded over the same period.

Some sites had their lowest July temperature on record.

Temperatures

The mean maximum temperature for July 2008 was in the range of 14.0°C, in the southern suburbs, to 14.8°C in the greater metropolitan area, which is marginally below the normal July mean maximum temperature. In the hills area the mean maximum temperature was near normal.

This has been the coolest mean maximum at the Adelaide Regional Office for July since 1995 when the mean maximum was 13.9°C whilst the coolest July mean maximum was 13.5°C occurred in 1909. The mean maximum last year was 15.6°C. The coldest day recorded at the Adelaide Regional Office with a maximum of 11.2°C was on the 7th July.

The mean minimum temperature for July 2008 was near normal for July throughout the metropolitan and Adelaide hills area.

This has been the coolest mean minimum at the Adelaide Regional Office for July since 2001 when the mean minimum was 7.0°C whilst the coolest July mean minimum recorded was 4.8°C in 1899. The lowest daily minimum temperature recorded at the Adelaide Regional Office was 0.7°C on the morning of the 28th, which is the equal 3rd lowest minimum temperature for July and is the equal 6th lowest of any month.

Parafield Airport recorded its lowest July minimum temperature of just −1.9°C on the morning of the 28th; this is also the equal 3rd lowest minimum temperature of any month, the lowest being −2.3°C in June 2006. The previous record for July was −1.4°C in 1997.

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		 19.4°C at Parafield Airport on the 31st
19.4°C at Edinburgh RAAF on the 31st
Warmest days on average
Highest mean daily maximum temperature		 14.8°C at Adelaide (Kent Town)
Coolest days on average
Lowest mean daily maximum temperature		 12.9°C at Mount Barker
Coldest day
Lowest daily maximum temperature		 9.5°C at Mount Barker on the 7th
Coldest night
Lowest temperature		 −1.9°C at Mount Barker on the 24th
−1.9°C at Parafield Airport on the 28th
Coolest nights on average
Lowest mean daily minimum temperature		 4.2°C at Mount Barker
Warmest nights on average
Highest mean daily minimum temperature		 8.1°C at Noarlunga
Warmest night
Highest daily minimum temperature		 13.0°C at Adelaide Airport on the 2nd
Wettest overall
Highest total rainfall		 263.2 mm at Piccadilly (Woodhouse)
Highest wind gust
 70 km/h at Noarlunga on the 14th

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Records

Record lowest July temperature
Lowest temperature
in July 2008 (°C) 		Previous lowest
for July		 Years of
record		 Normal for
July
Parafield Airport −1.9 on the 28th −1.4 on the 6th in 1997 52 6.3


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Summaries

Summary statistics for July 2008
Maximum temperatures
for July
(°C)		 Minimum temperatures
for July
(°C)		 Rainfall
for July
(millimetres)
Mean for
July
2008		 Diff
from
normal		 Highest for
July
2008		 Mean for
July
2008		 Diff
from
normal		 Lowest for
July
2008		 Total for
July
2008		 Normal
for
July		 Rank of
July
2008		 Fraction of
July
normal
Adelaide 14.8 −0.5 19.3 31st 7.4 0.0 0.7 28th 72.2 74.9 normal 96%
Adelaide Airport 14.7 −0.2 18.6 31st 7.2 +0.2 −0.1 24th 36.8 59.4 low 62%
Edinburgh RAAF 14.5 −0.7 19.4 31st 6.2 +0.2 −1.2 24th 48.6 52.4 normal 93%
Mount Barker 12.9 +0.1 16.6 19th 4.2 −0.3 −1.9 24th 116.8 105.5 normal 111%
Noarlunga 14.0   17.7 19th 8.1   2.4 28th 62.6
Parafield Airport 14.7 −0.4 19.4 31st 6.1 −0.2 −1.9 28th 41.6 58.6 low 71%

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Notes

This statement has been prepared based on information available at 2 pm on Thursday 31 July 2008. 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