Product Code: IDCKGC11L0
Thursday 1 February, 2007
Perth Monthly Climate Summary : January 2007
A cooler than normal month despite the hot finish
Rainfall - above average: The city received 19.2 mm of rainfall over 5 days in January compared with the average of 9 mm over 2 days. Historically, January rainfall has ranged from 0.0 mm in 12 years to 139.0 mm in 2000. Last January Perth registered 28.4 mm rainfall.
Mean daily maximum temperature - below average: Perth's mean daily maximum temperature in January was 29.1°C, compared with the average of 30.4°C. Daily maxima ranged from a cool 19.7°C on the 3rd, which equalled the record for January set in 1939, to a very hot 41.6°C on the 28th, which was the highest daily maximum temperature for January for 9 years.
Perth experienced its longest consecutive run of 40-degree days in January since 1991. During the three day hot spell, daily maximum temperature readings were; 26th 41.2°C, 27th 40.9°C and 28th 41.6°C.
Mean daily minimum temperature - below average: Perth's mean daily minimum temperature in January was 16.6°C, compared with the average of 17.7°C. This was the lowest daily mean minimum temperature recorded at the Perth (Mount Lawley) site, which opened in November 1993. Daily minima ranged from a cool 11.5°C on the 12th to a warm 24.4°C on the 29th, the warmest January night since the 25.6°C on 27 January 1999.
Climate of Perth in February
* Denotes highest February minimum temperature on record has occurred on the following dates: 6 February 1898, 8 February 1933 and 3 February 1962.
Very hot days in February: On average, Perth can expect one day when the maximum temperature is 40 degrees or higher. The highest number of very hot days in February was four in 1933 and 1985. The last time Perth recorded a very hot February day was on 21 February 2006 when 40.1°C was recorded.
Hot days in February: On average, Perth can expect 12 days when the maximum temperature is 32 degrees or higher. The highest number of hot days in February was 23 in 1996. That year also saw the second highest mean maximum temperature for February: 34.6 degrees.
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.