Monday 2 July, 2007 - Monthly Climate Summary for Perth - Product Code: IDCKGC11L0
Third driest June on record for Perth
Rainfall - very much below average: The city received 60.0 mm of rainfall over 11 days in June compared with the average of 178 mm over about 16 days. Since records began in 1876, this was Perth's third driest June on record. The wettest day in June 2007 was the 23rd when 19.2 mm was recorded. Historically, June rainfall has ranged from 24.6 mm in 2006, to 476.1 mm in 1945.
Year to date rainfall - very much below average: The total rainfall
for January to June this year was 226.6 mm recorded on 44 days compared with the
average of 382 mm over 43 days. The total for the same period last year was 134.6
Mean daily minimum temperature - near average: Perth's mean daily minimum temperature in June was 8.5°C, compared with the average of 8.7°C. Daily minima ranged from a cold 3.8°C on the 22nd to a mild 14.3°C on the 30th.
Cold nights: Perth recorded four cold nights this June with a minimum temperature of 5°C or less. The average for June is six nights. Last June Perth recorded its greatest number of such nights with 13.
Climate of Perth in July
the highest maximum temperature for July on record on the following dates: 17
& 18 July 1976.
Warm days in July: On average, Perth can expect six days when the maximum temperature is 20 degrees or more. The greatest number of such days in July was 14 days in 1976 and 1977. Last July, Perth recorded 10 such days.
Cold days in July: On average, Perth can expect two days when the maximum temperature is 15 degrees or less. The greatest number of such days in July was 12 in 1916. Last July, Perth recorded three such days.
Cold nights in July: Perth has a mean of eight cold nights when the minimum temperature is 5 degrees or lower. The greatest number of such nights was 16 in 1998. Last July, Perth recorded eight cold nights.
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 (Mount 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 (Mount 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.