Adelaide Metro & Hills in April 2010

Warmer with close to average rainfall.

This statement was prepared before all data for the period were available. This may affect some of the statistics presented.
  • Rainfall in the Adelaide and Hills region was generally close to average.
  • Monthly temperatures warmer than average.

Rainfall

The total rainfall recorded at the South Australian Regional Office (Kent Town) for April 2010 is 49.6 mm on 10 days, which is 9 mm more than the long-term average of 40.6 mm on 8 days. Last year, 73.6 mm was recorded in April on 7 days, and 45.0mm was recorded in April 2008. Rainfall values were generally close to average elsewhere over the metropolitan and hills area, with Adelaide Airport recording above average rainfall.

The highest rainfall recorded in the Adelaide and hills region for April was at Mount Lofty with 82.6 mm.

The South Australian Regional Office (Kent Town) has recorded a total of 83.4 mm of rain this year to date. This is just below the long-term mean of 97.2 mm for the January to April period. Last year was close to average with 97.0 mm recorded.

Temperature

Maximum and minimum temperatures were generally close to 2.0C warmer than average across the Adelaide Metro and Hills area..

The mean April temperature (average of the mean maximum and minimum temperatures) recorded at Adelaide (Kent Town) was 19.2°C, which is 1.7°C warmer than the long-term average of 17.5°C. The mean temperature this year so far (over January to April) has been 22.8°C, which equals the record mean temperature of 22.8°C set at the West Terrace site in 1968, and also at the current Kent Town site in 2007.

Maximum

The mean maximum temperature at the South Australian Regional Office (Kent Town) for April 2010 was 24.1C which is 1.5C above the long-term average of 22.6C. The mean April maximum last year was 22.8C, while the record highest April mean maximum at the South Australian Regional Office is 26.9 C in 1923.

The highest daily maximum temperature for the month was 32.8C recorded at Parafield Airport on the 5th, with the lowest daily maximum temperature of 12.2C recorded at Mount Lofty on the 28th.

This year so far, Adelaide's (Kent Town) mean maximum temperature has been 28.7°C, which is the warmest mean maximum temperature recorded for the January to April period (previous record of 28.6°C set in 2007).

Minimum

The mean minimum temperature for April 2010 at the South Australian Regional Office (Kent Town) was 14.3C, which is 1.9C above the normal April mean minimum of 12.4C. Last year the mean minimum was 13.0 C. April's highest recorded average minimum temperature is 15.7 C in 1971.

The coldest daily minimum temperature recorded in the Adelaide and hills area was 3.0C on the 12th at Mount Barker, whilst the warmest night was 21.1C at Noarlunga on the 23rd.

The mean minimum at Adelaide (Kent Town) this year so far is 16.9°C, which equals the previous warmest minimum temperature recorded over this period at the current Kent Town site (previous record set in 2007), but not the previous record set at the West Terrace site, which had a mean minimum temperature of 18.0°C for January to April 1968.

One site had their highest 1 April to 30 April mean daily minimum temperature on record.

 

Further information

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Extremes in 1 April to 30 April 2010
Hottest day 32.8 °C at Parafield Airport on the 5th
Warmest days on average 24.8 °C at Parafield Airport
Coolest days on average 18.3 °C at Mount Lofty
Coldest day 12.2 °C at Mount Lofty on the 28th
Coldest night 3.0 °C at Mount Barker on the 12th
Coolest nights on average 9.9 °C at Mount Barker
Warmest nights on average 14.5 °C at Noarlunga
Warmest night 21.1 °C at Noarlunga on the 23rd
Wettest overall 82.6 mm at Mount Lofty
Highest wind gust 61 km/h at Adelaide Airport on the 24th
61 km/h at Edinburgh RAAF on the 24th

Record highest 1 April to 30 April mean daily minimum temperature
Mean daily minimum
temperature
for 1 April to 30 April 2010 (°C)
Previous highest
for 1 April to 30 April
Years of
record
Average for
1 April to 30 April
Edinburgh RAAF 13.8 = 13.8 in 2005 36 11.9



Summary statistics for 1 April to 30 April 2010
Maximum temperatures
for 1 April to 30 April
(°C)
Minimum temperatures
for 1 April to 30 April
(°C)
Rainfall
for 1 April to 30 April
(millimetres)
Mean for
1 April to 30 April
2010
Diff
from
average
Highest for
1 April to 30 April
2010
Mean for
1 April to 30 April
2010
Diff
from
average
Lowest for
1 April to 30 April
2010
Total for
1 April to 30 April
2010
Average
for
1 April to 30 April
Rank of
1 April to 30 April
2010
Fraction of
1 April to 30 April
average
Adelaide (Kent Town) 24.2 +1.6 32.2 5th 14.3 +1.9 7.4 12th 49.6 40.6 average 122%
Adelaide Airport 23.3 +1.1 31.6 5th 13.7 +2.0 7.4 12th 61.4 35.6 high 172%
Edinburgh RAAF 24.4 +1.3 31.9 5th 13.8 +1.9 6.5 12th 33.4 31.4 average 106%
Mount Barker 22.8 +2.0 31.4 5th 9.9 +1.4 3.0 12th 55.4 60.4 average 92%
Mount Lofty 18.3   26.7 5th 10.7   5.9 13th 82.6
Noarlunga 22.9   31.0 5th 14.5   8.8 12th 55.6
Parafield Airport 24.8 +2.1 32.8 5th 13.2 +1.2 5.6 12th 30.4 39.5 average 77%

Notes

This statement was prepared before all data for the period were available. This may affect some of the statistics presented.

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 Friday 30 April 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