Tuesday, 4 March 2008 - Monthly Climate Summary for Perth - Product Code:IDCKGC11L0

Hottest February for twelve years in Perth

Mean daily maximum temperature - above average: Perth's mean daily maximum temperature in February was 32.5°C, which was the highest mean daily maximum temperature for Perth in February since 1996, then 34.6°C. The  average for February is 31.1°C. Daily maxima ranged from a mild 22.1°C on the 7th to a very hot 41.5°C on the 28th.

Perth's top 10 mean maximum temperatures
for February (1897- 2008)
Year
Mean Maximum Temperature (°C)
Departure from normal
Ranking
1985
35.1
+4.0
1
1996
34.6
+3.5
2
1975
34.0
+2.9
3
1988
33.9
+2.8
4
1921
33.7
+2.6
5
1972
33.1
+2.0
6
1976
33.0
+1.9
7
2008
32.5
+1.4
8
1933
32.4
+1.3
9
1940
32.3
+1.2
10
1999
32.3
+1.2
10

Mean daily minimum temperature - above average: Perth's mean daily minimum temperature in February was 19.3°C, compared with the average of 17.9°C. This was the highest mean daily minimum temperature recorded at the Perth (Mount Lawley) site, which opened in November 1993. Daily minima ranged from a mild 14.3°C on the 22nd to a warm 24.9°C on the 14th.

Rainfall - very much above average: The city received 47.6 mm of rainfall over 2 days in February compared with the average of 12 mm on about 2 days. February 2008 was the wettest February since the 131.4 mm in 1992. Historically, February rainfall has ranged from zero on 17 occasions to 166.3 mm in 1955. The wettest day in February 2008 was the 8th when 30.4 mm was recorded which was the wettest February day for 16 years, since the 120.6 mm on 9 February 1992. 

Year to date rainfall - above average: The total rainfall for January to February this year was 47.6 mm recorded on 2 days compared with the average of 22 mm on about 5 days. Last year Perth recorded 22.6 mm on 9 days for the year to the end of February.

February monthly mean temperature and sunshine
Element

2008

Long- term Average

Highest

Year

Lowest

Year Records Commence
Maximum
Temperature (°C)
32.5
31.1
35.1
1985
26.5
1926
1897
Minimum Temperature (°C)
19.3
17.9
22.7
1985
15.6
1931
1897
Sunshine
(hours per day) 
10.4
11.0
12.0
3 years
7.7
1955
1898
February rainfall and rain days
Element 2007 Long-term Average Highest Year Lowest Year Records Commence
Rainfall (mm)
47.6
   12   
166.3
1955
0.0
17 years
1876
Rain days
2
2.2
8
3 years
0
17 Years
1876
February daily extremes
Element 2007 Date Extreme Date

Records Commence

Highest daily maximum (°C)
41.5
28/02/2008
46.2
23/02/1991
1897
Lowest daily maximum (°C)
22.1
07/02/2008
19.0
17/02/1914
1897
Highest daily minimum (°C)
24.9
14/02/2008
29.3
* 3 years
1897
Lowest daily minimum (°C)
14.3
22/02/2008
8.7
01/02/1902
1897
Wettest 24 hours to 9am (mm)
30.4
08/02/2008
120.6
09/02/1992
1876

* Denotes highest February minimum temperature on record has occurred on the following dates: 6 February 1898, 8 February 1933 and 3 February 1962.

Climate of Perth in March
March is generally a little cooler than February as temperatures begin to decline with the autumn season. Most days are sunny and warm, but some hot days can occur, particularly in the first half of the month. On average, Perth can expect 19 mm of rainfall on about five days, though March has been rainless on several occasions since records began.

March monthly mean temperatures and sunshine
Element Average Highest Year Lowest Year

Records
Commence

Maximum temperature (°C)
29.5
31.8
1978
24.4
1927
1897
Minimum temperature (°C)
16.5
20.0
1988
13.5
1900
1897

Sunshine
(hours per day)

9.5
10.6
2001/2007
5.5
1927
1898
March monthly rainfall and rain days
Element
Average
Highest
Year
Lowest
Year
Records Commence
Rainfall (mm)
19
145.2
1934
0.0
6 years
1876
Rain days
4.6
10
1915
0
6 years
1876

March daily extremes
Element
Highest
Date
Lowest
Date
Records Commence
Maximum temperature (°C)
42.4
07/03/2007
16.4
27/03/1968
1897
Minimum temperature (°C)
28.3
02/03/1934
6.3
27/03/2008
1897
Rainfall 24 hours to 9am (mm)
77.0
09/03/1934
n/a
n/a
1876

Hot days in March: On average, Perth can expect about nine days when the maximum temperature is 32°C or higher. The greatest number of such hot days in March was 17 in 1983.

Days 40°C or higher in March: Daily maximum temperatures of 40°C or above occur in Perth in about six years out of ten. The most recent event was 7 March 2007 when Perth experienced 42.4°C, its highest recorded March temperature on record.

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.

Further information:
John Relf (JR), or Glenn Cook tel: (08) 9263 2222 on weekdays.