Perth in November 2013: Very warm and dry month

  • Rainfall: below average
  • Maximum temperature: very much above average, second highest at Perth Metro
  • Minimum temperature: very much above average, warmest on record for some sites

Rainfall

Rainfall across the Perth metropolitan area during November 2013 was below average. Monthly rainfall totals were generally less than 10 mm on the islands and on the Swan coatal plain, but were generally up to 20 mm in the hills. Jarradale received the highest monthly total in Perth with 21.0 mm, whilst Medina Research Centre recorded on ly 1.6 mm, its driest November in 31 years of record.

November 2013 was dominated by sunny days and only a few rainfall events. A trough near the west coast brought showers and thunderstorms to southwest WA on the 4th, but only southern Perth suburbs recorded any measurable rainfall with daily totals less than 1 mm. A weak cold front brushed the southwest corner of the State on the 24th and showers were reported across the metropolitan area, but most sites registered daily totals of less than 1 mm. Weak cold fronts moved through the southwest of the State on the 29th and 30th bringing widespread rainfall to the metropolitan area, with moderate falls in the hills. This was the first measurable rainfall for the month at some sites.

Perth Metro recorded 10.2 mmof rainfall in November 2013,and this all fell on the last day of the month. The total for the month was below the long term November averageof 22.4 mm on 6.3 rain days. Up until the rainfall recorded in the 24 hours to 9am on the 30th, Perth Metro had recorded 40 days without measureable rainfall, its longest spring dry spell since records commenced in 1876. Also, as a result of the rainfall on the last day of the month, Perth Metro avoided its second rain-free November in its 137 year recording history.

Maximum temperature

Mean maximum temperatures in November 2013 were very much above average,being 2 C to 3 C warmer than normal on the islands and in the hills, and 3 C to 4 C warmer than normal in the eastern suburbs. Mean maxima ranged from the mid-twenties on the off-shore islands, to the high twenties and low thirties across the coastal plain and in the hills, and were essentially equivalent to temperatures normally recorded in December. Pearce RAAF experienced its warmest Novemberin 52 years of record with a mean maximum of 30.6 C, exceeding its previous record of 30.4 C set in November 2010.

Apart from mild days on the 5th and 6th, 18th and 19th, 24th and 25th, and 29th and 30th, most days in November 2013 in the Perth metropolitan area were warm to hot, with the hottest days being the 10th and 16th. A maximum of 38.8 C at Pearce RAAF on the 16th was the highest temperature recorded in the metropolitan area during the month, whilst Bickley recorded the lowest maximum of 19.3 C on the 30th.

Perth Metro's mean maximum temperature in November 2013 was 29.1 C, the second warmest November in 116 years of record and only behind the record of 29.6 C set in November 2010. Daily maxima at Perth Metro ranged from a mild of 23.2 C on the 30th to a very hot 37.2C on the 10th.

Minimum temperature

Mean minimum temperatures in November 2013 in Perth were very much above average, being 1 C to 2 C warmer than normal through much of the metropolitan area, but between 2 C and 3 C in the eastern suburbs. Mean minima ranged from the low-to-mid teens in the hills, to the mid-teens on the coatal plain and islands. Pearce RAAF, Perth Airport, and Jandakot Aerodrome all recorded their warmest November on record in terms of overnight temperatures.

Nights were mostly cool to mild with a number of warm nights on the 4th, 16th, 22nd, and 28th. A number of sites recorded their warmest night of the month on the 16th and Pearce RAAF recorded a minimum of 22.9 C that day, the highest minimum in November 2013 in the Perth metropolitan area. Cold nights were reported on the 6th, 11th, 19th, and 25th, with most sites recording their coldest night for the month on the 19th. Bickley registered a minimum of 8.4 C on the 19th, the lowest temperature in Perth for the month.

Perth Metro's mean daily minimum temperature in November 2013 was 15.9 C, which was well above the long term average of 14.2 C. Daily minima during November 2013 ranged from a cold 12.1 C on the 19th to a warm 20.3 C on the 22nd and 28th.

Sunshine & Phenomena

Perth recorded an average daily sunshine of 11.1 hours in November 2013, which is above the long-term mean of 10.6 hours per day.

Further information

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Extremes in November 2013
Hottest day 38.8 C at Pearce RAAF on the 16th
Warmest days on average 30.6 C at Pearce RAAF
Coolest days on average 25.3 C at Rottnest Island
27.1 C at Bickley
Coldest day 19.3 C at Bickley on the 30th
Coldest night 8.4 C at Bickley on the 19th
Coolest nights on average 13.1 C at Bickley
Warmest nights on average 17.2 C at Rottnest Island
16.1 C at Champion Lakes
Warmest night 22.9 C at Pearce RAAF on the 16th
Wettest overall 21.0 mm at Jarrahdale
Wettest day 18.4 mm at Jarrahdale on the 30th
Highest wind gust 83 km/h at Rottnest Island on the 12th


Lowest total November rainfall for at least 10 years

Total rainfall
for November 2013 (mm)
Most recent November
at least this dry
Years since
drier
Average for
November
Swanbourne 1.6 1.0 in 1999 14 24.5



Record highest November mean daily maximum temperature

Mean daily maximum
temperature
for November 2013 (C)
Previous warmest
for November
Years of
record
Average for
November
Pearce RAAF 30.6 30.4 in 2010 52 27.1



Record highest November mean daily minimum temperature

Mean daily minimum
temperature
for November 2013 (C)
Previous warmest
for November
Years of
record
Average for
November
Perth Airport 15.1 14.7 in 1994 69 12.7
Pearce RAAF 15.1 14.4 in 1982 53 12.5
Jandakot Aero 14.9 14.1 in 1989 23 12.5



Record highest November mean temperature

Mean daily
temperature
for November 2013 (C)
Previous warmest
for November
Years of
record
Average for
November
Perth Airport 22.3 = 22.3 in 2010 69 19.3
Pearce RAAF 22.9 22.3 in 2010 52 19.8
Jandakot Aero 21.9 = 21.9 in 2010 23 19.3
Perth Metro 22.5 = 22.5 in 2010 19 20.3



Summary statistics for November 2013

Maximum temperatures
for November
(C)
Minimum temperatures
for November
(C)
Rainfall
for November
(millimetres)
Mean for
November
2013
Diff
from
average
Highest for
November
2013
Mean for
November
2013
Diff
from
average
Lowest for
November
2013
Total for
November
2013
Average
for
November
Rank of
November
2013
Fraction of
November
average
Bickley 27.1 +2.4 34.8 16th 13.1 +1.3 8.4 19th 18.0 43.3 low 42%
Champion Lakes 28.3 36.1 16th 16.1 11.6 25th 11.4


Garden Island HSF 26.2 +2.5 36.0 10th 17.0 +1.4 12.6 19th 8.8 23.9 v low 37%
Gosnells City 30.2 +2.9 38.1 16th 15.9 +1.6 12.0 19th 10.4 29.3 low 35%
Jandakot Aero 28.9 +2.8 37.0 10th 14.9 +2.4 8.5 25th 9.4 29.4 low 32%
Medina Research Centre 29.0 +3.1 38.1 10th 15.0 +1.7 11.1 25th 1.6 31.6 lowest 5%
Pearce RAAF 30.6 +3.5 38.8 16th 15.1 +2.6 9.9 26th 7.6 23.7 low 32%
Perth Airport 29.5 +3.7 37.2 16th 15.1 +2.4 9.2 25th 6.0 26.6 low 23%
Perth Metro 29.1 +2.7 37.2 10th 15.9 +1.7 12.1 19th 10.2 22.4 low 46%
Rottnest Island 25.3 +2.3 35.7 10th 17.2 +1.4 12.8 19th 5.8 17.2 low 34%
Swanbourne 28.4 +3.2 37.2 10th 16.0 +1.4 11.7 19th 1.6 24.5 v low 7%

Daily maximum temperature
Central Coast (09) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Bickley 28.1 26.0 29.7 31.1 21.7 23.1 24.8 26.2 30.5 33.5 30.9 28.3 27.3 29.9 30.4 34.8 27.8 22.2 22.2 25.2 28.9 29.5 25.7 22.6 23.6 28.3 30.5 29.6 21.4 19.3
Champion Lakes 27.2 28.2 31.8 31.3 22.7 23.8 26.7 28.0 31.9 35.7 30.7 28.5 29.3 31.9 32.4 36.1 28.3 23.5 24.5 27.0 30.9 30.9 25.5 23.6 24.9 28.3 31.1 29.1 23.3 21.8
Garden Island HSF 20.9 27.4 31.0 29.1 20.4 20.5 23.7 26.1 27.4 36.0 21.7 21.7 22.1 30.9 33.7 34.1 24.2 24.0 26.4 28.5 30.0 31.3 25.2 23.5 22.7 24.0 26.0 27.0 23.2 22.6
Gosnells City 29.5 29.4
33.2
26.0 27.8 29.9 33.7 38.0 32.9
30.5 32.9 34.0 38.1 30.2 24.5 25.8 28.5 32.4 33.5 29.0 24.6 26.0 31.0 32.0 32.0 25.4 23.6
Jandakot Aero 26.9 29.3 32.3 32.2 23.7 24.8 27.2 28.1 32.2 37.0 30.1 28.0 30.0 32.7 33.6 36.9 27.2 24.9 25.4 27.9 31.6 31.9 27.5 25.1 25.2 27.8 30.0 30.2 24.7 23.1
Medina Research Centre 25.0 29.0 32.0
33.2 23.2 27.0 29.5 31.0 38.1 27.7 27.6 29.2 32.6

27.1 24.5 26.3 28.5 32.4 32.2 28.3
24.6 27.1 30.1 30.1

Pearce RAAF 28.9 29.1 33.2 35.4 25.0 26.1 28.3 29.6 34.1 37.5 34.5 30.8 31.5 33.4 34.8 38.8 29.7 25.4 26.2 29.5 32.7 32.4 29.5 26.9 27.3 32.2 32.5 32.6 25.9 25.2
Perth Airport 27.7 29.8 33.2 33.2 24.1 25.0 27.5 29.5 33.1 36.9 31.5 29.4 30.7 32.8 33.6 37.2 28.9 24.7 25.6 28.2 31.5 32.0 27.6 25.2 25.5 29.5 31.0 31.6 25.1 23.3
Perth Metro 27.0 29.8 33.4 32.6 24.2 24.4 27.1 29.2 33.2 37.2 30.7 27.7 29.3 32.6 33.7 37.1 28.3 25.2 25.7 28.3 31.9 31.1 27.0 24.9 25.2 29.3 29.6 30.2 24.4 23.2
Rottnest Island 21.9 24.1 29.0 30.1 22.0 21.3 22.2 24.9 26.1 35.7 22.7 22.7 22.6 24.7 31.3 33.0 24.2 23.7 24.9 27.1 29.0 27.9 24.8 23.5 22.2 23.3 24.8 24.6 22.2 22.4
Swanbourne 25.4 30.3 33.8 30.6 23.2 23.1 27.4 29.0 31.5 37.2 25.8 25.0 25.9 32.8 34.7 35.8 26.1 26.7 26.6 29.5 33.8 31.2 26.8 25.4 24.2 26.2 27.7 27.3 24.4 23.7

This table is very wide; you may have to scroll sideways to see all the days, and you may need to set the paper to 'landscape' to print.
The temperatures in this table are coloured by
their difference from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 C difference from average


Daily minimum temperature
Central Coast (09) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Bickley 12.5 14.0 10.9 16.8 15.5 10.9 12.1 9.8 11.5 13.4 15.7 14.6 11.9 12.6 12.1 15.7 16.9 13.9 8.4 9.3 11.8 16.4 13.7 14.8 10.1 11.2 13.1 16.7 14.9 12.2
Champion Lakes 13.9 17.3 15.0 20.0 17.9 13.4 15.2 13.9 15.7 17.9 13.8 14.2 12.8 15.9 16.0 21.3 19.2 17.4 12.3 13.3 16.2 20.4 17.1 16.6 11.6 14.4 16.3 20.8 18.0 15.0
Garden Island HSF 17.3 16.3 15.1 21.0 17.1 15.4 14.2 14.7 15.5 18.7 17.8 17.0 16.1 16.6 16.4 21.4 19.9 17.2 12.6 13.6 17.1 20.2 17.4 19.0 15.5 14.7 16.8 20.8 18.4 15.7
Gosnells City 14.2 17.2 15.0
18.2
15.2 14.6 16.5 17.2 13.7 14.1
12.9 16.1 21.6

12.0 13.0 16.4 21.1 17.0 17.0 12.2 13.6 16.0 20.6 18.5 14.8
Jandakot Aero 13.7 15.8 14.6 19.5 17.4 10.9 13.5 13.7 12.9 16.0 10.2 14.1 12.6 13.3 15.6 21.2 17.7 14.9 11.2 13.1 15.5 20.1 14.0 17.3 8.5 11.1 14.9 19.6 17.5 15.1
Medina Research Centre 14.5 16.0 15.0 19.1
12.5 13.6 13.9 15.2 17.6 11.2 15.0 13.6 11.6 16.1

16.0 11.7 13.0 15.5 19.9 14.4 18.7 11.1 11.4 14.6 20.2 18.0
Pearce RAAF 13.1 15.9 15.5 20.7 18.2 11.9 14.2 15.2 14.1 14.9 10.2 12.2 12.8 15.7 16.6 22.9 17.7 14.7 12.5 13.6 18.0 20.9 14.1 15.4 10.6 9.9 14.1 17.0 16.5 14.2
Perth Airport 14.4 16.6 14.8 19.4 18.3 12.4 14.2 14.1 12.4 15.3 10.7 15.1 13.9 15.1 15.8 20.2 16.9 15.4 11.6 12.9 15.7 19.9 14.2 17.9 9.2 11.1 16.3 19.1 16.7 14.4
Perth Metro 15.4 16.5 15.0 19.7 18.1 13.3 14.1 14.2 14.2 17.0 13.5 15.9 14.4 15.3 16.1 19.6 20.0 17.5 12.1 13.0 15.6 20.3 16.6 17.6 12.4 12.8 15.5 20.3 17.5 14.5
Rottnest Island 17.5 16.6 15.4 19.9 17.6 15.9 14.6 16.1 17.4 19.2 18.3 17.1 15.8 16.6 16.9 21.5 19.5 17.2 12.8 13.9 17.7 20.9 18.1 17.8 15.6 15.7 17.0 19.5 18.2 14.7
Swanbourne 15.6 16.0 15.3 19.2 17.5 13.0 13.4 14.7 15.6 18.5 15.8 15.9 13.4 13.5 16.7 21.0 20.0 16.1 11.7 13.2 16.3 21.2 16.3 18.1 13.3 12.7 14.4 19.4 18.3 14.7

This table is very wide; you may have to scroll sideways to see all the days, and you may need to set the paper to 'landscape' to print.
The temperatures in this table are coloured by
their difference from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 C difference from average


Daily rainfall
Central Coast (09) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
Bickley - - - - - - 0.2 - - - - - - - - - - - - - - - - - 1.0 - - - - 16.8
Champion Lakes - - - - - - - - - - - - - - - - - - - - - - - - 0.4 - - - - 11.0
Garden Island HSF - - - - 0.2 - - - - - - - - - - - - - - - - - - - 0.2 - - - - 8.4
Gosnells City - - - - - - - - - - - - - - - - - - - - - - - - 0.8 - - - - 9.6
Jandakot Aero - - - - 0.2 - - - - - - - - - - - - - - - - - - - 0.6 - - - - 8.6
Jarrahdale - 0.2 - - 0.4 0.2 - 0.2 - - - - 0.2 - - - - - - - - 0.6 - - 0.8 - - - - 18.4
Medina Research Centre - - - - 0.4 - - - - - - - - - - - - - - - - 0.8 - - - -
Pearce RAAF - - - - - - - - - - - - - - - - - - - - - 2.2 0.2 - 0.2 - - - - 5.0
Perth Airport - - - - - - - - - - - - - - - - - - - - - - - - 0.2 - - - - 5.8
Perth Metro - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10.2
Roleystone - - - - 0.2 - 0.2 - - - - - - - - - - - - - - - - - 1.0 - - - - 18.2
Rottnest Island - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5.8
Serpentine - - - - 0.6 - 0.2 - - - - - - - - - - - - - - - - - 0.2 - - - - 10.2
Swanbourne - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1.6

Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with are part of a longer accumulation, which is marked like this on the final day. Values over 100 mm have been rounded to the nearest whole millimetre. Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
This table is very wide; you may have to scroll sideways to see all the days, and you may need to set the paper to 'landscape' to print.


Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Perth using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.

This statement has been prepared based on information available at 11 am on Sunday 1 December 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages are long-term means based on observations from all available years of record, which vary widely from site to site. They are not shown for sites with less than 10 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.

The Rank indicates how rainfall this time compares with the climate record for the site, based on the decile ranking (very low rainfall is in decile 1, low in decile 2 or 3, average in decile 4 to 7, high in decile 8 or 9 and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.

The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.

Further information

Media
(03) 9669 4057
Enquiries