Adelaide Metro & Hills in spring 2011: Warm with below average rainfall.

  • Below average spring rainfall, typically about 80% of average across the region.
  • Warmer than average temperatures, by up to 2C.

Rainfall

Spring rainfall across the metropolitan area was mostly below average with some locations receiving up to 30% less than normal. Although rainfall totals for the month of October were near average, rainfall across the region was well below average through September and November 2011. Rainfall totals for the season as a whole were typically 80 to 110mm on the Adelaide plains, and ranging between 120 to 200mm in the Adelaide Hills. The wettest location in the Adelaide metropolitan and hills area during spring 2011 was at Piccadilly (Woodhouse) with 211.3 mm.

Adelaide (Kent Town) recorded 114.6 mm for spring 2011, which is 21.3 mm below the long-term spring rainfall average. In 2010, spring rainfall at Kent Town totalled 124.6 mm ( Note that the rainfall readings used here for climate records are from the manual Kent Town gauge. Some Adelaide rainfall totals on some Bureau of Meteorology web pages may differ as they are from automatic rainfall recordings).

Temperature

Both maximum and minimum temperatures were warmer than average across the Adelaide metropolitan and hills area this spring. September and November days were warmer than average, with cooler days in October, while night-time temperatures were cooler in September but warmer in both October and November.

The spring 2011 average maximum temperature at Adelaide (Kent Town) was 23.3 C, which is 1.3 C above the average spring maximum. The hottest maximum temperature recorded in the Adelaide metropolitan and hills area was 38.3 C, recorded at both Edinburgh RAAF and Parafield Airport on the 18th of November. The coldest day was recorded at Mount Lofty on September 10, with 7.9 C. Parafield Airport recorded the warmest days on average with 24 C, which is 2.0 C above spring average recorded at this location. The coolest days on average were recorded at Mount Lofty with 17.2 C.

Minimum temperatures were also warmer than average across the Adelaide metropolitan and hills area. The mean minimum temperature for spring 2011 at Adelaide (Kent Town) was 12.7, which is 1.0 C above the average spring mean minimum, and is ranked as the third warmest since records began in 1977. Last spring the mean minimum was 11.7C. The coldest night during spring was recorded at Edinburgh RAAF on the 25th of September where the minimum went down to 1.2 C. Noarlunga recorded the warmest night during spring with 24.6 C on 18th November. The coolest nights on average were at Mount Lofty where minimum temperatures averaged 8.3 C.

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Extremes in spring 2011
Hottest day 38.3 °C at Edinburgh RAAF on 18 Nov
38.3 °C at Parafield Airport on 18 Nov
Warmest days on average 24.1 °C at Parafield Airport
Coolest days on average 17.2 °C at Mount Lofty
Coldest day 7.9 °C at Mount Lofty on 10 Sep
Coldest night 1.2 °C at Edinburgh RAAF on 25 Sep
Coolest nights on average 8.3 °C at Mount Lofty
Warmest nights on average 12.7 °C at Adelaide (Kent Town)
Warmest night 24.6 °C at Noarlunga on 18 Nov
Warmest on average overall 18.0 °C at Adelaide (Kent Town)
Coolest on average overall 12.8 °C at Mount Lofty
Wettest overall 211.3 mm at Piccadilly (Woodhouse)
Highest wind gust 89 km/h at Parafield Airport on 14 Oct




Summary statistics for spring 2011
Maximum temperatures
for spring
(°C)
Minimum temperatures
for spring
(°C)
Rainfall
for spring
(millimetres)
Mean for
spring
2011
Diff
from
average
Highest for
spring
2011
Mean for
spring
2011
Diff
from
average
Lowest for
spring
2011
Total for
spring
2011
Average
for
spring
Rank of
spring
2011
Fraction of
spring
average
Adelaide (Kent Town) 23.3 +1.3 36.8 18 Nov 12.7 +1.0 5.0 12 Sep 114.6 135.9 average 84%
Adelaide Airport 22.5 +1.5 36.3 18 Nov 12.0 +1.3 4.3 13 Sep 87.8 109.4 average 80%
Edinburgh RAAF 23.6 +1.4 38.3 18 Nov 11.2 +0.9 1.2 25 Sep 94.2 112.9 average 83%
Mount Barker 20.7 +1.2 35.0 18 Nov 8.8 +1.5 1.7 3 Oct 151.2 192.3 low 79%
Mount Lofty 17.2   29.8 18 Nov 8.3   2.5 25 Sep 181.2
Noarlunga 22.1   33.7 5 Nov 12.4   5.5 12 Sep 83.0
Parafield Airport 24.1 +2.2 38.3 18 Nov 11.3 +0.9 2.6 12 Sep 96.4 113.4 average 85%

Notes

A Seasonal 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 4 pm on Wednesday 30 November 2011. 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