Perth in autumn 2014: Dry early and mid-autumn constrasting with a wet finish

Dry and warm to hot conditions for most of March and April made way for a wet and mild late April and May in Perth. Autumn 2014 was near average in terms of rainfall as a result of an above average May, and near average for daytime temperatures, whilst overnight temperatures were approximately 1 °C above average for most sites.

  • Wettest autumn (282.4 mm) for 9 years at Bickley, since May 2005 (313.2 mm)
  • Warmest autumn nights for 3 years for Perth Metro
  • Least sunshine hours in Perth in autumn (7.4 hours per day) for 9 years, since May 2005 (7.2 hours per day)

Further information

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Extremes in autumn 2014
Hottest day 40.1 °C at Pearce RAAF on 2 Mar
Warmest days on average 27.2 °C at Pearce RAAF
Coolest days on average 23.6 °C at Bickley
Coldest day 13.7 °C at Bickley on 31 May
Coldest night 3.4 °C at Jandakot Aero on 2 May
Coolest nights on average 13.1 °C at Bickley
Warmest nights on average 17.5 °C at Rottnest Island
15.7 °C at Swanbourne
Warmest night 24.0 °C at Gosnells City on 7 Mar
Warmest on average overall 20.7 °C at Rottnest Island
20.7 °C at Swanbourne
Coolest on average overall 18.4 °C at Bickley
Wettest overall 297.4 mm at Jarrahdale
Wettest day 61.8 mm at Bickley on 8 May
Highest wind gust 102 km/h at Rottnest Island on 8 May




Summary statistics for autumn 2014
Maximum temperatures
for autumn
(°C)
Minimum temperatures
for autumn
(°C)
Rainfall
for autumn
(millimetres)
Mean for
autumn
2014
Diff
from
average
Highest for
autumn
2014
Mean for
autumn
2014
Diff
from
average
Lowest for
autumn
2014
Total for
autumn
2014
Average
for
autumn
Rank of
autumn
2014
Fraction of
autumn
average
Bickley 23.6 -0.1 36.7 2 Mar 13.1 +0.6 5.7 2 May 282.4 211.0 high 134%
Champion Lakes 25.6   38.1 1 Mar 15.5   7.9 29 Apr 201.0
Garden Island HSF 23.7 -0.6 35.2 1 Mar 16.9 +0.8 10.3 30 May 108.6 134.8 average 81%
Jandakot Aero 25.7 -0.1 37.7 1 Mar 13.4 +1.0 3.4 2 May
Medina Research Centre 26.0 +0.3 39.0 1 Mar 14.5 +1.2 5.3 22 Apr        
Pearce RAAF 27.2 +0.9 40.1 2 Mar 13.8 +0.4 5.7 22 Apr 155.2 134.6 average 115%
Perth Airport 26.3 +0.6 38.2 1 Mar 14.0 +0.9 5.2 1 May 140.2 156.3 average 90%
Perth Metro 26.1 +0.1 38.0 1 Mar 14.7 +1.1 6.0 30 May 184.6 180.4 average 102%
Rottnest Island 23.8 +0.1 36.3 1 Mar 17.5 +0.4 11.2 8 May 134.8 151.9 average 89%
Swanbourne 25.8 +0.2 38.0 12 Mar 15.7 +0.7 8.3 22 Apr

Notes

A Seasonal Climate Summary is prepared to list the main features of the weather in Perth 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.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 10 am on Tuesday 3 June 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 10 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