Product Code: IDCKGC11L0

Perth Monthly Climate Summary: November 2006

Warm November for Perth

Friday 1 December, 2006

November Rainfall - near average: The city received 16.2 mm of rainfall over 8 days in November compared with the average of 22 mm over 6 days. Last November Perth registered 13.4 mm on 7 days.

Eleven-month rainfall - record low: The total rainfall for January to November for Perth this year was 461.6 mm on 95 days, making it the driest such period on record for Perth. The previous driest was 496.3 mm on 93 days in 1940. The average for this period is 846 mm.

Perth's top 10 driest years to date
(January to November total)
Year
Rainfall (mm)
Rain Days
Ranking
2006
461.6
95
1
1940
496.3
93
2
1914
502.4
106
3
1877
514.9
100
4
1979
556.8
109
5
1969
564.3
84
6
1894
565.0
98
7
1911
584.0
101
8
1959
603.3
111
9
1977
605.4
92
10

Mean daily maximum temperature - above average: Perth's mean daily maximum temperature in November was 27.4°C, making it the highest mean daily maximum temperature for November since the 27.6°C in 2003. The November average is 26.1°C. Daily maxima ranged from a mild 21.9°C on the 1st to a hot 35.7°C on the 26th.

Mean daily minimum temperature - above average: Perth's mean daily minimum temperature in November was 15.6°C, making it the highest mean daily minimum temperature for November since the 16.0°C in 1989. The November average is 14.0°C. Daily minima ranged from a cool 10.7°C on the 2nd to a mild 19.0°C on the 6th.

November monthly mean temperature and sunshine
Element

2006

Long- term Average

Highest

Year

Lowest

YearRecords Commence
Maximum
Temperature (°C)
27.4
26.1
27.7
1920
21.5
1971
1897
Minimum
Temperature (°C)
15.6
14.0
16.9
1982
11.9
1954
1897
Sunshine
(hours per day)
9.9
10.7
11.9
2002
5.1
1965
1898
November rainfall and rain days
Element2006Long-term AverageHighestYearLowestYearRecords Commence
Rainfall (mm)
16.2
22
73.2
1984
0.0
1891
1876
Rain days
8
6
14
3 years
0
1891
1876

November daily extremes
Element2006DateExtremeDate

Records Commence

Highest daily maximum (°C)
35.7
26/11/2006
40.3
* Several
1897
Lowest daily maximum (°C)
21.9
01/11/2006
15.8
02/11/1919
1897
Highest daily minimum (°C)
19.0
06/11/2006
25.1
24/11/1920
1897
Lowest daily minimum (°C)
10.7
02/11/2006
5.0
18/11/2004
1897
Wettest 24 hours to 9am (mm)
7.0
29/11/2006
39.1
29/11/1956
1876

* Denotes the highest daily maximum temperature recorded on 24 November 1913 and 11 November 2003.

Climate of Perth in December

December is typically a dry month and days are generally sunny and warm to hot. On most afternoons a sea breeze moderates the temperature. December is Perth's sunniest month on average with 11.7 hours of sunshine per day.

December mean temperatures and sunshine
ElementAverageHighest YearLowest Year

Records
Commence

Maximum temperature
(°C)
28.7
31.7
1931
23.7
2005
1897
Minimum temperature
(°C)
16.2
19.6
1977
13.9
2005
1897

Sunshine
(hours per day)

11.7
12.6
2000
8.0
1925
1898
December rainfall and rain days
Element
Average
Highest
Year
Lowest
Year
Records Commence
Rainfall (mm)
13
80.7
1951
0.0
5 years
1876
Rain days
4
14
1913/44
0
5 years
1876

December daily extremes
Element
Highest
Date
Lowest
Date
Records Commence
Maximum temperature (°C)
42.3
31/12/1968
14.9
17/12/1952
1897
Minimum temperature (°C)
27.1
18/12/1979
8.4
02/12/2002
1897
Rainfall 24 hours to 9am (mm)
46.7
03/12/1951
n/a
n/a
1876

Very hot days: Perth can expect one day in December when the maximum temperature is 40 degrees Celsius or higher. The highest number of such December days was two in 1968, 1974, 1977, 1997 and 2002. The last time Perth recorded a very hot day in December was on 14 December 2004 with 41.5 degrees.

Hot days: On average, Perth can expect seven days in December when the maximum temperature is 32 degrees Celsius or higher. The highest number of hot days in December was eighteen in 1931, Perth's warmest December on record with a mean maximum temperature of 31.7 degrees. Last December, Perth recorded one hot day.

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.

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