Friday 2 January 2009 - Annual Climate Summary for Perth - Product Code:IDCKGC51L0
Near average rainfall with warmer days for Perth in 2008
Annual rainfall - near average: Perth's annual rainfall for 2008 was 807.8 mm on 117 days, compared with the long-term average of 855 mm on about 111 days. In 2007, Perth recorded 703.0 mm on 117 days.
Perth's wettest month in 2008 was July with 179.4 mm, on 20 days, just above the average of 170 mm. The wettest day in 2008 was 6 April when 58.6 mm of rainfall was recorded.
Perth's driest month was January when no rainfall was recorded.
Annual mean maximum temperature - near average: Perth's annual mean maximum temperature in 2008 was 24.6°C, which was the highest annual mean maximum temperature since the 24.8°C in 2006. The long-term annual mean maximum temperature is 24.4°C.
Daily maxima ranged from a cold 14.1°C on 31 July to a very hot 41.9°C on 3 January.
During 2008 Perth recorded 54 hot days, when the maximum temperature was 32°C
or higher, which is the greatest number of such days since the 56 days
in 1998. The long-term annual average is 47.
Perth recorded 39 nights when the minimum temperature was 5°C or less, the greatest number of such nights since the 43 in 2001. The long-term annual average is 26.
Annual mean sunshine hours - average:
Perth's annual mean sunshine hours in 2008 was 8.8 hours, which equals
the long-term average of 8.8 hours.
* 6 February 1898, 8
February 1933 and 3 February 1962. ** 6 & 7 July 2008.
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 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 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.