Adelaide Metro & Hills in August 2010

Cold and Wet

  • Well above average rainfall throughout.
  • August rainfall brings year to date rainfall up to near average
  • Maximum temperatures 1C to 2C below average.
  • Record August rainfall records were set at a few places.

Rainfall

The total rainfall recorded at Adelaide (Kent Town), for August 2010 was 115.2 mm recorded on 23 days, which is almost double the long-term average of 67.1 mm. This is the second wettest August on record. The highest August rainfall occurred in 1992 with 129.0 mm.

Rainfall totals were well above average elsewhere over the metropolitan and hills region, with most suburbs of Adelaide receiving between 50 and 100 mm during August. Over higher parts of the Adelaide Hills rainfall totals in excess of 150 mm were recorded at several locations. The highest rainfall total of 289.6 mm was recorded at Uraidla, which is the new highest August rainfall total recorded for Uraidla. A few other locations set new monthly rainfall records for August, see monthly rainfall records. Magill also set a new highest daily rainfall record for August with 40.0 mm on the 26th (the previous highest was 38.0 mm on the 1st in 1994).

For the first eight months of the year 381.0 mm has been recorded at Adelaide (Kent Town). The long-term average is 384.7 mm for the same period. Rainfall totals are close to average this year so far over the rest of the Adelaide Hills and Metro area.

Some sites had their highest total August rainfall on record.
Some sites had their highest total August rainfall for at least 25 years.
Some sites had their highest August daily rainfall on record.

Temperature

Maximum temperatures were well below average over the Adelaide metro and hills area this August. At Adelaide (Kent Town) the mean maximum temperature for August was 15.1 C, which is 1.6C below the long-term mean of 16.7 C. Last year, in contrast, was 1.6 C above the long-term August mean maximum temperature.

The hottest maximum temperature recorded in the Adelaide metropolitan and hills area was 21.1 C at Parafield Airport on the 31st.

Minimum temperatures were close to average across the Adelaide metropolitan and hills area this August. The mean minimum temperature for August 2010 at Adelaide (Kent Town) was 8.0 C, which is 0.2 C below the long-term August mean minimum temperature of 8.2 C. This is the lowest August average minimum temperature since 2008 when 6.5C was recorded. In August last year, the mean minimum temperature was 9.4 C.

The coldest minimum temperature recorded in the Adelaide metropolitan and hills area was -0.1 C on the 17th at Mount Barker, whilst the warmest night was 14.1 C at Adelaide (Kent Town), on the 31st.

 

Further information

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Extremes in August 2010
Hottest day 21.1 °C at Parafield Airport on the 31st
Warmest days on average 15.5 °C at Parafield Airport
Coolest days on average 8.8 °C at Mount Lofty
Coldest day 5.7 °C at Mount Lofty on the 4th
Coldest night -0.1 °C at Mount Barker on the 17th
Coolest nights on average 4.1 °C at Mount Lofty
Warmest nights on average 8.6 °C at Noarlunga
Warmest night 14.1 °C at Adelaide (Kent Town) on the 31st
Wettest overall 289.6 mm at Uraidla
Highest wind gust 81 km/h at Adelaide Airport on the 1st

Record highest August daily rainfall
Highest daily rainfall
in August 2010 (mm)
Previous highest
for August
Years of
record
Adelaide (Magill Secure Care Centre) 40.0 on the 26th 38.0 on the 1st in 1994 43



Record highest total August rainfall
Total rainfall
for August 2010 (mm)
Previous highest
for August
Years of
record
Average for
August
Belair (State Flora Nursery) 181.3 175.8 in 1984 127 97.3
Adelaide (Magill Secure Care Centre) 158.5 149.8 in 1984 43 85.7

Highest total August rainfall for at least 25 years
Total rainfall
for August 2010 (mm)
Most recent higher
for August
Years since
higher
Average for
August
Uraidla 289.6 292.5 in 1900 110 145.1
Woodside 214.4 219.5 in 1968 30 112.8



Summary statistics for August 2010
Maximum temperatures
for August
(°C)
Minimum temperatures
for August
(°C)
Rainfall
for August
(millimetres)
Mean for
August
2010
Diff
from
average
Highest for
August
2010
Mean for
August
2010
Diff
from
average
Lowest for
August
2010
Total for
August
2010
Average
for
August
Rank of
August
2010
Fraction of
August
average
Adelaide (Kent Town) 15.1 -1.6 20.1 31st 8.0 -0.2 3.6 7th 115.2 66.7 v high 173%
Adelaide Airport 15.0 -0.9 19.6 30th 8.0 +0.5 3.1 7th 77.4 50.1 high 154%
Edinburgh RAAF 15.0 -1.5 19.7 31st 6.9 +0.4 1.5 5th 61.2 49.7 average 123%
Mount Barker 13.2 -1.0 18.5 30th 5.0 +0.1 -0.1 17th 188.1 102.6 v high 183%
Mount Lofty 8.8   14.6 31st 4.1   1.9 17th 232.4
Noarlunga 14.7   18.9 31st 8.6   5.5 5th 80.0
Parafield Airport 15.5 -0.7 21.1 31st 7.0 +0.3 1.6 5th 77.6 54.0 high 144%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Adelaide Metro & Hills using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

This statement has been prepared based on information available at 3 pm on Wednesday 1 September 2010. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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 long-term average 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, 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 rain has fallen this time as a percentage of the long-term mean.

Further information

Media
(03) 9669 4057
Enquiries