Monday, 2 November 2009 - Monthly Climate Summary for Adelaide Metro & Hills - Product code IDCKGC13R0

Adelaide Metro & Hills in October 2009
Warm end of Month.

Summary

  • The warm end to the month offsets the first 3 weeks of cooler than average temperatures resulting in a near average monthly temperature.
  • Below average rain in the central and southern suburbs but mainly average over the northern suburbs and hills areas.

An archive of previous monthly summaries for Adelaide Metro & Hills is also available, as are summaries for other states and many other climate summaries and diagnostics.

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Rainfall

The South Australian Regional Office (Kent Town) rainfall for October 2009 was 18.4 mm, recorded on 7 days which is very much below the Kent Town average of 45.1 mm on 11 days. (The South Australian Regional Office rainfall total is from the manually observed 203 mm rain gauge. This may differ from totals on the Bureau's webpage as these may be from the automatic tipping bucket rain gauge).

The total rainfall for the first 10 months of 2009 at the South Australian Regional Office was 456.8 mm, which is 33.8 mm below the long-term average of 490.6 mm. Last year 348.2 mm was recorded over the same period.

The rainfall amounts recorded in the metropolitan area were generally average ranging from about 20 mm, in coastal areas, up to 40 mm in areas near the foothills. In the Adelaide Hills the rainfall totals were mainly between 40 mm and 75 mm. The highest reading was 90.2 mm at Kersbrook.

Overall the water storage for Adelaide is at 92% of maximum capacity, very much more than this time last year. Some reservoirs are at maximum capacity.

Temperatures

The mean maximum temperature for October 2009 was in the range of 15.5°C, in the Adelaide Hills, to 22.6°C in the northern suburbs, which is less than 1°C above the normal October mean maximum temperature.

The coldest daytime maximum temperature recorded at the South Australian Regional Office was 15.1°C on the 2nd October with the warmest being 33.7°C on the 29th..

The highest daily maximum temperature of 34.5°C was recorded at Parafield and Edinburgh, in the northern suburbs, on the 29th, whilst the coolest daytime temperature was 8.2°C at Mount Lofty, in the Adelaide Hills, on the 13th.

October's mean daily minimum temperatures in the suburbs and adjacent hills varied from 0.1°C above the average, in the central suburbs, to 0.7°C below the average in the northern suburbs. The mean minimum temperature ranged from 6.9°C, in the hills, to 11.5°C in the central suburbs.

The lowest daily minimum temperature recorded at the South Australian Regional Office was 6.0°C on the morning of the 6th.

In the metropolitan and hills areas the lowest daily minimum temperature of 1.3°C was recorded at Mount Barker on the morning of the 18th, whilst the warmest night was 20.6°C at Kent Town (South Australian Regional Office ) and Mount Lofty on the 30th.

Some sites had their lowest October temperature on record.

Further information

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au

Extremes

Hottest day
Highest temperature		 34.5°C at Edinburgh RAAF on the 29th
34.5°C at Parafield Airport on the 29th
Warmest days on average
Highest mean daily maximum temperature		 22.6°C at Edinburgh RAAF
Coolest days on average
Lowest mean daily maximum temperature		 15.5°C at Mount Lofty
Coldest day
Lowest daily maximum temperature		 8.2°C at Mount Lofty on the 13th
Coldest night
Lowest temperature		 1.3°C at Mount Barker on the 18th
Coolest nights on average
Lowest mean daily minimum temperature		 6.9°C at Mount Lofty
Warmest nights on average
Highest mean daily minimum temperature		 11.5°C at Adelaide (Kent Town)
Warmest night
Highest daily minimum temperature		 20.6°C at Adelaide (Kent Town) on the 30th
20.6°C at Mount Lofty on the 30th
Wettest overall
Highest total rainfall		 90.2 mm at Kersbrook Effluent Ponds
Highest wind gust
 81 km/h at Edinburgh RAAF on the 13th

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Records

Record lowest October temperature
Lowest temperature
in October 2009 (°C) 		Previous lowest
for October		 Years of
record		 Average for
October
Edinburgh RAAF 1.6 on the 7th 2.0 on the 9th in 2003 37 10.0


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Summaries

This table is very wide and may not fit if printed.

Summary statistics for October 2009
Maximum temperatures
for October
(°C)		 Minimum temperatures
for October
(°C)		 Rainfall
for October
(millimetres)
Mean for
October
2009		 Diff
from
average		 Highest for
October
2009		 Mean for
October
2009		 Diff
from
average		 Lowest for
October
2009		 Total for
October
2009		 Average
for
October		 Rank of
October
2009		 Fraction of
October
average
Adelaide 21.9 +0.1 33.7 29th 11.5 +0.1 6.0 6th 18.4 44.3 low 42%
Adelaide Airport 21.3 +0.4 32.8 29th 10.7 +0.1 5.2 18th 20.0 38.2 low 52%
Edinburgh RAAF 22.6 +0.6 34.5 29th 9.3 −0.7 1.6 7th 16.2 39.8 low 41%
Mount Barker 19.8 +0.5 31.0 30th 7.0 −0.1 1.3 18th 65.0 67.1 average 97%
Mount Lofty 15.5   26.8 29th 6.9   2.1 7th 64.4
Noarlunga 20.3   31.9 29th 10.7   5.0 9th 18.8
Parafield Airport 22.5 +0.8 34.5 29th 9.4 −0.7 2.5 6th 24.6 42.5 average 58%

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Notes

This statement has been prepared based on information available at 8 am on Monday 2 November 2009. 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

South Australian Regional Office
South Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au