Adelaide Metro & Hills in summer 2013-14: Extremes throughout the season

This statement was prepared on the 28th February before all maximum temperature data for the period were available. This may affect some of the statistics presented.

A very extreme and variable summer with a series of heatwaves resulted in record numbers of days with extreme temperatures, and while predominatly dry through the season Adelaide observed its wettest day in 45 years.

  • Adelaide has a record 13 days reaching 40 °C or more, 11 of which reached 42 °C or more
  • Adelaide had its 4th hottest day on record reaching 45.1 °C on January 14
  • A record run of 5 days of 42 °C or more occurs in heatwave conditions in mid-January
  • Adelaide has its wettest day in 45 years and 6th wettest day on record, in mid-February

Rainfall

Adelaide (Kent Town) recorded 124.6 mm of rain during summer 2013-14, more than double the historical average (61.4 mm). Conditions were typically drier than average through the season, with below average monthly rainfall totals being observed in December and January. In February, the city recorded nearly 100 mm, with 75.2 mm in the 24 hours to 9am on February 14 which resulted in Adelaide's wettest day in over 45 years ( since 1969) and the 6th highest daily rainfall total recorded in Adelaide since records began in 1839.

Largely due to the mid-February rainfall event, summer rainfall totals were generally above average at most locations across the Adelaide Plains and Hills. The wettest location for the season was at Lobethal (Maidment Road), where 192.0 mm was observed, 95 mm of which was recorded on February 14, when several other locations also observed there highest summer daily rainfall on record at the Kent Town office .

Temperature

Mean temperatures (the average of maximum and minimum temperatures) were very much warmer than normal across the Adelaide region. The warmest location in the region was Adelaide (Kent Town) with a daily average temperature of 23.8 °C, whilst the coolest on average was Kuitpo Forest Reserve with 20.0 °C.

The summer period saw a series of extreme temperatures across most of the region, with Adelaide observing 13 days where the maximum temperature exceeded 40 °C (the average is 2 days per summer), 11 of which were days with maximum temperatures greater than 42 °C. This beats the previous record set for both summer and calendar years where 11 summer days with daily maximum temperature greater than 40 °C was observed in the summer of 1897-1898. The calendar year record for number of days greater than 40 °C is 12 days which has occurred 2 times in the past, in 1908 and 2009.

Summer maximum temperatures were warmer than average across the Adelaide Metropolitan and Hills. The mean maximum temperature recorded at Adelaide (Kent Town) across the summer period was 30.3 °C, which is 1.7 °C above the long term summer average maximum temperature, and the hottest summer days since summer 2009/2010.

The period from January 12 to January 17 saw very hot days across the Adelaide region and the state. During this heatwave event Adelaide and Parafield recorded 5 days in a row where the temperature reached 42 °C or more, a new record for both locations. Edinbrugh experienced a record run of 4 days of 42 °C or more.

The hottest maximum temperature recorded in the Adelaide Metropolitan and Hills area during was 45.4 °C at Edinburgh RAAF on January 16. Kent Town observed 45.1 °C on January 14, Adelaide's fourth hottest day since Adelaide temperature records began in 1887. The coldest day was recorded at Mount Lofty with 12.0 °C on December 5. Mount Lofty also observed the coolest days on average with 24.8 °C. Parafield Airport recorded the warmest days on average with 31.0 °C.

Like maximum temperatures, minimum temperatures were warmer than average across the Adelaide Metropolitan and Hills. Adelaide (Kent Town) recorded the warmest nights on average with a summer mean minimum temperature of 17.3 °C, 0.6 °C above the long term average. The warmest night during summer was recorded at Noarlunga with 31.5 °C on January 17; this was also the warmest night for this location since January 1 2009. The coolest night for any location across the Adelaide area during summer was observed at Mount Lofty on December 5 with 3.9 °C. The coldest nights on average were observed at Mount Barker with a seasonal average of 12.9 °C. The warmest nights on average were at Kent Town with 17.3 °C.

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Extremes in summer 2013-14
Hottest day 45.4 °C at Edinburgh RAAF on 16 Jan 2014
Warmest days on average 31.0 °C at Parafield Airport
Coolest days on average 24.8 °C at Mount Lofty
Coldest day 12.0 °C at Mount Lofty on 5 Dec 2013
Coldest night 3.9 °C at Mount Lofty on 5 Dec 2013
Coolest nights on average 12.9 °C at Mount Barker
Warmest nights on average 17.3 °C at Adelaide (Kent Town)
Warmest night 31.5 °C at Noarlunga on 17 Jan 2014
Warmest on average overall 23.8 °C at Adelaide (Kent Town)
Coolest on average overall 20.0 °C at Kuitpo Forest Reserve
Wettest overall 192.0 mm at Lobethal (Maidment Road)
Driest overall 7.6 mm at Leawood Gardens (Eagle on The Hill)
Wettest day 97.4 mm at Belair on 14 Feb 2014
97.4 mm at Montacute on 14 Feb 2014
Highest wind gust 89 km/h at Mount Crawford (Mt Crawford AWS) on 14 Jan 2014

Record highest summer daily rainfall
Highest daily rainfall
in summer 2013-14 (mm)
Previous wettest
for summer
Years of
record
Uraidla 84.5 on 14 Feb 2014 77.2 on 26 Dec 1959 125
Adelaide (Kent Town) 75.2 on 14 Feb 2014 66.2 on 8 Dec 2010 38
Burnside 77.6 on 14 Feb 2014 67.2 on 8 Dec 2010 38
Blackwood (Wittunga) 63.0 on 14 Feb 2014 54.0 on 8 Dec 2010 36



Summary statistics for summer 2013-14
Maximum temperatures
for summer
(°C)
Minimum temperatures
for summer
(°C)
Rainfall
for summer
(millimetres)
Mean for
summer
2013-14
Diff
from
average
Highest for
summer
2013-14
Mean for
summer
2013-14
Diff
from
average
Lowest for
summer
2013-14
Total for
summer
2013-14
Average
for
summer
Rank of
summer
2013-14
Fraction of
summer
average
Adelaide (Kent Town) 30.3 +1.7 45.1 14 Jan 2014 17.3 +0.6 8.5 5 Dec 2013 124.0 63.1 v high 197%
Adelaide Airport 28.7 +1.4 43.3 14 Jan 2014 16.4 +0.9 8.7 15 Dec 2013 99.6 60.2 high 165%
Edinburgh RAAF 30.5 +1.2 45.4 16 Jan 2014 16.9 +1.0 8.2 15 Dec 2013 136.8 63.3 v high 216%
Kuitpo Forest Reserve 25.9   41.4 14 Jan 2014 14.0   6.0 5 Dec 2013 108.4
Mount Barker     43.0 2 Feb 2014 12.9 +1.5 5.7 24 Dec 2013 135.2 86.4 high 156%
Mount Lofty 24.8   38.9 2 Feb 2014 13.0   3.9 5 Dec 2013 164.4
Noarlunga 28.3   43.4 2 Feb 2014 16.9   8.8 5 Dec 2013 80.0
Parafield Airport 31.0 +2.1 45.3 16 Jan 2014 16.4 +0.5 8.0 5 Dec 2013 122.6 64.6 v high 190%

Notes

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

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 Friday 28 February 2014. 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