Adelaide Metro & Hills in February 2013: A warm and dry end to summer

This statement was prepared before all data for the period were available. This may affect some of the statistics presented.
  • Slightly below average rainfall, typically 80 to 90% of average on the Adelaide plains and Hills.
  • Warmer than average days and nights.

Rainfall

February 2013 rainfall at Adelaide (Kent Town) was below average, with 11.8 mm received on 4 rain days. The long-term February average is 13.2 mm typically received on 4 rain days, with a median rainfall of 8.4 mm. By comparison, 61.2 mm was observed through February 2012. Rainfall totals elsewhere across the Adelaide and Hills region were mostly below average, with most locations seeing around 60% of the normal February rainfall amount.

Rainfall totals generally ranged between 10 to 15 mm across the Adelaide Plains while totals in excess of 20 mm were observed at some locations in the Hills. The wettest location for the month was at Charleston in the Hills where 33.2 mm was recorded, 23mm of which occurring on the 16th as a low pressure trough combined with high humidity produced showers and thunderstorms across the Mount Lofty Ranges.

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

Temperature

Although February 2013 started and finished with cooler than usual temperatures, both monthly maximum and minimum temperatures were above average across the Adelaide Plains and Hills region. The warmest period occurred through the third week of February as a high pressure system located in the Tasman Sea directed light to moderate northerly winds over South Australia, resulting in hot to very hot conditions for most of the State. Adelaide (Kent Town) observed the highest February daily maximum temperature for any location in the region on the 18th with a maximum of 40.5C.

The average maximum temperature recorded at Adelaide (Kent Town) for February 2013 was 31.1C, 1.7C above the long-term average of 29.4 C. In comparison, February 2012 saw average maximum temperatures of 28.2C at Adelaide (Kent Town). The record warmest February mean maximum in Adelaide is 33.0C recorded in February 1906 at the West Terrace site. The warmest days on average through February 2013 were at Parafield Airport, with a monthly average of 31.5 C. The coldest day during February 2013 was reported at Mount Lofty on the 27th when the maximum reached 14.7 C.

The mean minimum temperature for February 2013 at Adelaide (Kent Town) was 18.2C, 1.0 C above the long term February average of 17.2 C, and the warmest nights on average for any location in the region. By comparison, February 2012 saw minimum temperatures average 17.2C.

The coldest night during February 2013 in the Adelaide and Hills area was 7.4 C, observed on the 1st at Mount Lofty, which also observed the coolest nights on average with 13.6 C. The warmest night was 29.5 C at Noarlunga on the 18th.

Further information

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Extremes in February 2013
Hottest day 40.5 °C at Adelaide (Kent Town) on the 18th
Warmest days on average 31.5 °C at Parafield Airport
Coolest days on average 25.7 °C at Mount Lofty
Coldest day 14.7 °C at Mount Lofty on the 27th
Coldest night 7.4 °C at Mount Lofty on the 1st
Coolest nights on average 13.6 °C at Mount Lofty
Warmest nights on average 18.2 °C at Adelaide (Kent Town)
Warmest night 29.5 °C at Noarlunga on the 18th
Warmest on average overall 24.7 °C at Adelaide (Kent Town)
Coolest on average overall 19.7 °C at Mount Lofty
Wettest overall 33.2 mm at Charleston
Driest overall 1.8 mm at Willunga
Wettest day 23.0 mm at Charleston on the 16th
Highest wind gust 63 km/h at Mount Crawford (Mt Crawford AWS) on the 6th




Summary statistics for February 2013
Maximum temperatures
for February
(°C)
Minimum temperatures
for February
(°C)
Rainfall
for February
(millimetres)
Mean for
February
2013
Diff
from
average
Highest for
February
2013
Mean for
February
2013
Diff
from
average
Lowest for
February
2013
Total for
February
2013
Average
for
February
Rank of
February
2013
Fraction of
February
average
Adelaide (Kent Town) 31.1 +1.7 40.5 18th 18.2 +1.0 11.9 1st 11.8 13.2 average 89%
Adelaide Airport 29.0 +0.9 38.9 18th 17.3 +1.2 12.0 4th 15.4 18.1 average 85%
Edinburgh RAAF 31.2 +1.2 39.5 18th 17.2 +0.6 11.3 3rd 11.0 16.5 average 67%
Kuitpo Forest Reserve 27.0   36.5 18th 15.1   9.5 1st 20.8
Mount Barker 28.7 +2.0 38.7 18th 13.7 +1.8 9.0 1st 17.1 25.4 average 67%
Mount Crawford (Mt Crawford AWS) 28.3   36.3 18th 14.7   8.3 1st 14.8
Mount Lofty 25.7   34.3 18th 13.6   7.4 1st 17.2
Noarlunga 29.0   38.6 18th 17.8   11.4 1st 7.4
Parafield Airport 31.5 +2.2 39.7 18th 17.1 +0.7 10.3 1st 10.2 18.0 average 57%

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 Thursday 28 February 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