Adelaide Metro & Hills in winter 2013: A warm and wet winter

This statement was prepared before all data for the period were available. This may affect some of the statistics presented.
  • Above average rainfall across the Plains and Hills, with Adelaide's wettest winter in 9 years
  • Warmer than average days and nights

Rainfall

Winter rainfall across the Adelaide metropolitan and Hills area was above average for 2013, with several locations in the Adelaide Hills receiving in excess of 40% more rainfall than normal. The winter 2013 rainfall total at Adelaide (Kent Town) was 280.0 mm received on 48 rain days, 57 mm above the long-term winter average and resulting in the wettest winter since 2004 (9 years).

For Adelaide, the season started with near average rainfall throughout June with 76.4 mm for the month. Most of the total winter rainfall was observed through the wettest July in 18 years, when 119.2mm was recorded for the month, most of which fell between the 18th and 23rd. The wet conditions continued through August with 84.4 mm being recorded.

Despite the above average wet conditions seen through July and August,  the wettest day for any location in the Adelaide metro and Hills region through as observed at Parafield Airport on June 1st, with 59.8 mm, which was a record highest winter daily rainfall for this location. The wettest location overall was at Mount Lofty which received a winter total rainfall of 526.4mm. Mount Barker received 458.2 mm for the season, resulting in the wettest winter in 32 years for this location.

Note that the Adelaide official climate rainfall record is taken from the manually observed 203mm rain gauge at the Kent Town site of the Adelaide. These figures may differ from totals on some Bureau web pages as these may be from automatic tipping bucket rain gauge readings.

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

Temperature

Maximum temperatures were generally warmer than average across the Adelaide metropolitan and Hills area this winter. The mean maximum temperature recorded at Adelaide (Kent Town), for winter 2012 was 16.6 °C, which is 0.6 °C above the average winter maximum.

The hottest maximum temperature recorded in the Adelaide metropolitan and Hills area during winter 2013 was 25.8 °C at Adelaide (Kent Town) on August 31. The coldest day was recorded at Mount Lofty on July 20 with 5.0 °C. Both Adelaide (Kent Town) and Parafield Airport recorded the warmest days on average with 16.6 °C. The coolest days on average were recorded at Mount Lofty with 10.7 °C.

Minimum temperatures were also warmer than average across the Adelaide metropolitan and Hills area. The mean minimum temperature for winter 2013 at Adelaide (Kent Town) was 9.0 °C, which is 1.1 °C above the average winter mean minimum. The warmest night night during winter 2013 was recorded at Adelaide Airport with 14.8 °C on June 1. The coldest nights for any location across the Adelaide area during winter was observed at Parafield Airport on June 19 with 0.9 °C which was also observed on July 20 at Mount Lofty. The coolest nights on average were observed at Mount Lofty with a seasonal average of 6.2 °C. The warmest nights on average were at Noarlunga with 9.9 °C.

The warm nights reflect the below average number of frost nights (nights with a minimum temperature at or below 2 °C) across the Adelaide Plains and Hills; Parafield Airport had 5 nights and Edinburgh RAAF had 3 nights. Both Adelaide (Kent Town) and the Adelaide Airport had no nights below 2 °C where one or two would typically be expected. Frost nights through the Hills were also below average; Mount Barker had 4 nights as opposed to the average of 16.

Some sites had their highest winter mean daily minimum temperature on record.

Further information

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Extremes in winter 2013
Hottest day 25.8 °C at Adelaide (Kent Town) on 31 Aug
Warmest days on average 16.6 °C at Adelaide (Kent Town)
16.6 °C at Parafield Airport
Coolest days on average 10.7 °C at Mount Lofty
Coldest day 5.5 °C at Mount Lofty on 20 Jul
Coldest night 0.9 °C at Parafield Airport on 19 Jun
0.9 °C at Mount Lofty on 20 Jul
Coolest nights on average 6.2 °C at Mount Lofty
Warmest nights on average 9.9 °C at Noarlunga
Warmest night 14.8 °C at Adelaide Airport on 1 Jun
Warmest on average overall 12.9 °C at Noarlunga
Coolest on average overall 8.5 °C at Mount Lofty
Wettest overall 526.4 mm at Mount Lofty
Driest overall 222.6 mm at Parafield Airport
Wettest day 59.8 mm at Parafield Airport on 1 Jun
Highest wind gust 78 km/h at Mount Lofty on 18 Jul
78 km/h at Noarlunga on 18 Jul
78 km/h at Adelaide Airport on 16 Aug
78 km/h at Mount Lofty on 16 Aug

Record highest winter daily rainfall
Highest daily rainfall
in winter 2013 (mm)
Previous wettest
for winter
Years of
record
Parafield Airport 59.8 on 1 Jun 51.4 on 5 Jun 1988 66
Edinburgh RAAF 59.2 on 1 Jun 51.0 on 21 Jun 2005 41



Highest total winter rainfall for at least 25 years
Total rainfall
for winter 2013 (mm)
Most recent winter
at least this wet
Years since
wetter
Average for
winter
Mount Barker 458.2 541.0 in 1981 32 309.4



Record highest winter mean daily minimum temperature
Mean daily minimum
temperature
for winter 2013 (°C)
Previous warmest
for winter
Years of
record
Average for
winter
Mount Barker 6.7 6.5 in 1867 110 4.9



Summary statistics for winter 2013
Maximum temperatures
for winter
(°C)
Minimum temperatures
for winter
(°C)
Rainfall
for winter
(millimetres)
Mean for
winter
2013
Diff
from
average
Highest for
winter
2013
Mean for
winter
2013
Diff
from
average
Lowest for
winter
2013
Total for
winter
2013
Average
for
winter
Rank of
winter
2013
Fraction of
winter
average
Adelaide (Kent Town) 16.6 +0.6 25.8 31 Aug 9.0 +1.1 3.6 19 Jun 280.0 222.8 high 126%
Adelaide Airport 16.3 +0.7 25.3 31 Aug 8.7 +1.3 2.5 19 Jun 236.6 166.6 v high 142%
Edinburgh RAAF 16.3 +0.4 24.5 31 Aug 7.4 +1.0 1.2 19 Jun 231.0 157.7 high 146%
Mount Barker 14.1 +0.5 23.2 31 Aug 6.7 +1.8 1.2 19 Jun 458.2 309.4 v high 148%
Mount Lofty 10.7   19.8 31 Aug 6.2   0.9 20 Jul 526.4
Noarlunga 15.8   24.6 31 Aug 9.9   5.0 1 Aug 254.4
Parafield Airport 16.6 +0.9 25.0 31 Aug 7.5 +0.8 0.9 19 Jun 222.6 167.0 high 133%

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 12 pm on Sunday 1 September 2013. 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.

The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

Further information

Media
(03) 9669 4057
Enquiries