Tuesday, 3 March 2009 - Seasonal Climate Summary for Perth - Product Code: IDCKGC21L0
A very warm summer in Perth
Mean daily maximum temperature - very much above average: The mean daily maximum temperature this summer was 30.7°C, which is the equal 10th warmest summer on record for Perth. The average is 30.1°C. Last summer the mean daily maximum temperature was 31.0°C, Perth's equal fourth warmest summer on record. Daily values this summer ranged from a mid 21.9°C on 10 December 2008 to a very hot 41.8°C on 16 January 2009.
Mean daily minimum temperature - near average: The mean daily minimum temperature for Perth this summer was 17.4°C, compared to the average of 17.3°C. Daily minima ranged from a cool 10.0°C on 26 February 2009 to a warm 23.7°C on 11 February 2009. Last summer the mean daily minimum temperature was 17.8°C.
Rainfall - near average: This summer the rainfall in Perth was near average. From December to February, Perth received 20.0 mm over 11 days compared with the average of 36 mm on about 9 days. It was Perth's driest summer since 2004/2005, then 5.6 mm on 6 days. Last summer, Perth recorded 65.6 mm over 9 days. Rainfall totals for individual months this summer were: December 11.6 mm (average 13 mm), January 0.2 mm (average 10 mm) and February 8.2 mm (average 13 mm). The wettest day was on 26 February 2009 when 7.6 mm of rain was recorded.
* Denotes highest February minimum temperature on record has occurred on the following dates: 6 February 1898, 8 February 1933 and 3 February 1962.
Note: Official Perth observations have been recorded at several different sites with varying instrumentation over the years, and these changes can affect the continuity of the climate record. For the current Perth (Mt Lawley) site, the most significant changes of this kind relate to temperature and rain days. For that reason, current mean temperature and rain-day data quoted here are based only on readings from the Perth (Mt Lawley) site, which commenced observations in 1993. Sunshine recordings are from Perth Airport and for similar reasons current means use only Perth Airport data, which commenced in 1993.