Sydney swelters in record November heat

  • Hottest November on record
  • Highest average minimum temperature on record
  • Well above average maximum temperatures
  • 2nd highest temperature ever recorded in November, 40.4 °C (on 22nd)
  • Dry month with well below average rainfall
  • Close to average sunshine

Rainfall

Following a wet October, Sydney returned to hot, dry conditions during November. Observatory Hill had a total rainfall of only 13.4 mm, which is well below the historical November average of 83.5 mm. It is the driest November at Observatory Hill since 1962 (when 10.4 mm) and ranks as the 18th driest November out of 152 years of record. The rain fell on 8 days, which is below the average of 12 rain days. The entire metropolitan area recorded below average rainfall with many suburbs recording their driest November since 1982. Slightly higher totals occurred in some southern suburbs and on the far northern beaches where thunderstorm activity was greatest. Monthly totals in metropolitan Sydney ranged from 35.0 mm at Peakhurst in southwest Sydney to only 6.8 mm at Collaroy on the northern beaches. A thunderstorm on the 20th produced 14 mm at Avalon, the highest daily rainfall in the metropolitan area during November.

A very slow moving high pressure system in the Tasman Sea for much of the month provided stable conditions along the central and southern coast with little rainfall in the Sydney region. The few low pressure troughs that managed to cross the region were very weak and produced little or no rainfall over the city.

Dry conditions also prevailed over the Warragamba Dam catchment with most falls between 10 and 40 mm for the month. The dry weather caused Sydney's storage level to fall by 2% during November and is currently around 55% of capacity. Recent rainfall and current levels in Sydney's water catchments can be found on the Sydney Catchment Authority web site http://www.sca.nsw.gov.au/dams/rainfall.html

Some sites had their lowest total November rainfall on record. Some sites had their lowest total November rainfall for at least 20 years.

Temperatures

Sydney has recorded its hottest November on record. The average mean temperature (average of maximum and minimum) was 22.4 ° which is 2.8 °C above the historic mean average. The previous hottest November was in 1914 with a mean temperature of 22.0 °C.

Daytime temperatures were well above average with long spells of warm, sunny days and the occasional hot day, especially towards the end of the month. Sydney Observatory Hill recorded its 2nd highest November temperature on record, 40.4 °C on the 22nd. Observatory Hill recorded an average monthly maximum temperature of 26.1 °C, which is 2.5 °C above the historical November average. This is Sydney's highest November average maximum temperature since 1897 (when 26.4 °C). Sydney's hottest November with respect to average maximum temperatures was in 1894 (26.5 °C). It was several degrees hotter in Sydney's western suburbs with an average maximum of 32.2 °C at Penrith, at least 4 °C above the historic average.

Sydney Observatory Hill recorded 6 hot days (temperature over 30 °C) during November, the highest number since 7 days in November 1966. It was even hotter in Sydney's western suburbs where the cooling sea breeze failed to penetrate. The November total of 17 hot days (temperature over 30 °C) at Richmond was the highest since 1957 and 20 hot days at Penrith (highest on record).

Some sites had their highest November temperature on record. Some sites had their highest November mean daily maximum temperature on record. Some sites had their highest November mean daily maximum temperature for at least 20 years.

Very warm nights were also experienced throughout the metropolitan area during the month with Sydney Observatory Hill recording its highest average minimum temperature on record for November. The average minimum of 18.7 °C was a significant 3.1 °C above the historic average. The previous highest was 18.5 °C in 1914. Numerous other locations around the metropolitan area also recorded their highest average minimum temperature on record for November. Warm nights were common during November with 21 nights having a minimum greater than 18 °C, easily exceeding the previous highest number of 18 nights set in 1914. The normal frequency for November is 5 nights above 18 °C. There was also a record total of 6 very warm nights (minimum greater than 21 °C), double the previous highest frequency of 3 nights set in 1984 and 1914. This compares to Sydney's normal frequency of one very warm night in November every 3 years.

Some sites had their warmest November night (highest daily minimum temperature) on record. Some sites had their highest November mean daily minimum temperature on record. Some sites had their highest November mean daily minimum temperature for at least 20 years.

The high temperatures in Sydney were mainly due to slow moving high pressure systems that remained almost stationary in the Tasman Sea for much of the month. The trailing edge of the highs directed warm to hot northerly winds over the state and in the Sydney area for most of November. The heat peaked on the 22nd with temperatures in metropolitan Sydney exceeding 40 °C.

An El Niño event is currently maturing in the equatorial Pacific Ocean.  These events are usually (but not always) associated with above average temperatures in eastern Australia. Very high temperatures experienced throughout winter and spring are likely due to the current influence of El Niño combined with the background, long-term warming that has been observed across Australia since the start of last century.

There was significant variation in temperatures over the Sydney region during November, with extremes ranging from a high of 42.5 °C at Sydney Airport on the 22nd to a low of 8.9 °C at Camden Airport AWS on the 14th. The warmest night was 23.1 °C at Penrith on the 21st.

Wind

Coastal Sydney experienced prevailing E-NE winds during November, with a frequency of 63% from this direction at 3pm compared to the historic average of 47% from this direction. However, the winds indicated a more northerly component in the western suburbs with a frequency of 48% from the NE-NW at Richmond. The highest wind gust was 94 km/h at Penrith Lakes AWS on the 20th during a thunderstorm.

Other phenomena

Observatory Hill recorded 4 thunderstorms during the month, on the 12th, 16th, 20th and 23rd but were accompanied by little or no rainfall. The most severe was on the 20th when 2 houses caught fire after being hit by lightning and a localised downburst in the Church Point area (northern suburbs) caused extensive damage to houses and brought down trees. Raised dust with westerly winds on the 29th reduced visibility to 5 km over Sydney. Sunshine averaged 7.8 hours per day, slightly above the November historical average of 7.6 hours per day.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in November 2009
Hottest day 42.5 °C at Sydney Airport on the 22nd
Warmest days on average 32.2 °C at Penrith Lakes AWS
Coolest days on average 26.1 °C at Sydney (Observatory Hill)
Coldest day 18.1 °C at Springwood on the 23rd
18.8 °C at Terrey Hills AWS on the 4th
Coldest night 8.9 °C at Camden Airport AWS on the 14th
Coolest nights on average 15.0 °C at Campbelltown (Mount Annan)
Warmest nights on average 18.7 °C at Sydney (Observatory Hill)
Warmest night 23.1 °C at Penrith Lakes AWS on the 21st
Wettest overall 43.4 mm at Valley Heights (Lower Blue Mtns)
35.0 mm at Peakhurst
Driest overall 6.8 mm at Collaroy (Long Reef)
7.0 mm at Toongabbie
Wettest day 18.0 mm at Springwood on the 6th
14.0 mm at Avalon on the 21st
Highest wind gust 94 km/h at Penrith Lakes AWS on the 20th

Record lowest total November rainfall
Total rainfall
for November 2009 (mm)
Previous lowest
for November
Years of
record
Average for
November
Collaroy (Long Reef) 6.8 14.5 in 1975 23 86.0

Lowest total November rainfall for at least 20 years
Total rainfall
for November 2009 (mm)
Most recent lower
for November
Years since
lower
Average for
November
Sydney (Observatory Hill) 13.4 10.4 in 1962 47 83.1
Seven Hills (Collins St) 10.0 8.8 in 1962 44 81.8
Cronulla South 16.0 15.3 in 1968 41 87.3
Rose Bay (Royal Sydney Golf Club) 17.2 5.6 in 1928 40 89.7
Riverview Observatory 10.7 10.0 in 1962 32 78.0
Berowra (Goodwyn Road) 17.6 7.1 in 1982 27 87.6
Merrylands (Welsford Street) 9.8 9.4 in 1982 27 95.6
Parramatta North (Masons Drive) 12.0 8.0 in 1982 27 84.2
Randwick Bowling Club 18.0 13.0 in 1982 27 81.1
Turramurra (Kissing Point Road) 14.0 12.4 in 1982 27 107.4
Castle Cove (Rosebridge Ave) 10.0 8.8 in 1982 26 111.0
Kings Langley (Solander Rd) 12.0 11.4 in 1982 26 79.4
Prospect Reservoir 12.4 11.0 in 1982 26 72.1
Mona Vale Golf Club 15.2 0.0 in 1980 25 83.5
Strathfield Golf Club 18.0 7.0 in 1982 23 79.6



Record highest November temperature
Highest temperature
in November 2009 (°C)
Previous highest
for November
Years of
record
Average for
November
Prospect Reservoir 42.0 on the 20th 41.6 on the 25th in 2002 43 25.2
Riverview Observatory 40.5 on the 22nd = 40.5 on the 25th in 2002 26 24.2



Record highest November mean daily maximum temperature
Mean daily maximum
temperature
for November 2009 (°C)
Previous highest
for November
Years of
record
Average for
November
Sydney Airport 27.2 26.7 in 1968 70 24.0
Parramatta North 28.6 28.4 in 2002 42 25.3
Prospect Reservoir 29.8 28.7 in 2002 42 25.2
Bankstown Airport AWS 28.6 28.1 in 1968 41 25.1
Camden Airport AWS 30.1 30.0 in 2002 33 25.9

Highest November mean daily maximum temperature for at least 20 years
Mean daily maximum
temperature
for November 2009 (°C)
Most recent higher
for November
Years since
higher
Average for
November
Sydney (Observatory Hill) 26.1 26.4 in 1897 112 23.6
Riverview Observatory 27.2 27.7 in 1915 67 24.2



Record highest November daily minimum temperature
Highest daily minimum
temperature
in November 2009 (°C)
Previous highest
for November
Years of
record
Average for
November
Camden Airport AWS 21.7 on the 21st 21.0 on the 4th in 2005 34 12.8



Record highest November mean daily minimum temperature
Mean daily minimum
temperature
for November 2009 (°C)
Previous highest
for November
Years of
record
Average for
November
Sydney (Observatory Hill) 18.7 18.5 in 1914 150 15.6
Sydney Airport 18.5 17.5 in 1997 70 15.3
Parramatta North 16.5 15.5 in 1997 42 13.9
Prospect Reservoir 16.1 16.0 in 1990 42 14.2
Bankstown Airport AWS 16.9 15.9 in 2007 41 14.2
Camden Airport AWS 15.2 14.8 in 2000 33 12.8

Highest November mean daily minimum temperature for at least 20 years
Mean daily minimum
temperature
for November 2009 (°C)
Most recent higher
for November
Years since
higher
Average for
November
Riverview Observatory 17.4 17.7 in 1914 68 14.1



Summary statistics for November 2009
Maximum temperatures
for November
(°C)
Minimum temperatures
for November
(°C)
Rainfall
for November
(millimetres)
Mean for
November
2009
Diff
from
average
Highest for
November
2009
Mean for
November
2009
Diff
from
average
Lowest for
November
2009
Total for
November
2009
Average
for
November
Rank of
November
2009
Fraction of
November
average
Sydney (Observatory Hill) 26.1 +2.5 40.4 22nd 18.7 +3.1 15.0 14th 13.4 83.1 v low 16%
Bankstown Airport AWS 28.6 +3.6 41.5 20th 16.9 +2.7 12.4 14th 21.4 76.1 low 28%
Camden Airport AWS 30.1 +4.2 41.9 20th 15.2 +2.4 8.9 14th 20.2 74.0 low 27%
Liverpool 29.7 +4.4 41.6 20th 16.0 +2.2 11.0 10th 30.1 78.3 low 38%
Parramatta North 28.6 +3.3 41.8 20th 16.5 +2.6 11.5 10th 12.0 84.2 v low 14%
Penrith Lakes AWS 32.2   42.2 20th 17.0   11.6 14th 13.6
Prospect Reservoir 29.8 +4.6 42.0 20th 16.1 +1.9 11.4 10th 12.4 72.1 v low 17%
Richmond RAAF 30.5 +3.7 41.4 22nd 16.0 +2.3 9.9 14th 13.8 76.1 v low 18%
Springwood 28.3   42.0 20th 15.7   11.3 14th 42.2 95.0 low 44%
Sydney Airport 27.2 +3.2 42.5 22nd 18.5 +3.2 15.2 14th 24.4 79.8 low 31%
Terrey Hills AWS 26.3   38.9 20th 16.7   12.4 14th 19.0

Daily rainfall

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.

Hunter (61)123456789101112131415161718192021222324252627282930
Webbs Ck-Wisemans Ferry (Hawkesbury Rive - - - - - - 1.4 3.4 6.0 - - - 3.8 - - - - - - - - - - - 0.5 - 2.4 0.2 - -
Central Tablelands (South) (63)123456789101112131415161718192021222324252627282930
Sackville Ferry (Hawkesbury River) - - - - 0.2 2.8 1.2 1.0 3.4 - - - 3.4 0.2 - - - 0.2 - - - - - - - - 1.6 - - -
Springwood Bowling Club - - - 0.4 1.8 18.0 4.8 1.2 2.4 - - - 0.4 - - - - 0.2 - - 0.4 - - 10.0 0.2 - 2.4 - - -
Valley Heights (Sun Valley Rd)
- - 0.4 2.0 16.0 »» »» 7.8
- - 1.4



0.2 -
0.6
- 12.0
- 3.0
-
Metropolitan (East) (66)123456789101112131415161718192021222324252627282930
Auburn (Rosnay Golf Club) - - - - - 2.0 1.0 - 1.0 - - - 2.0 - - - - - - - 1.0 - - 4.0 - - 3.0 - - -
Audley (Royal National Park) - - - 1.0 3.0 7.0 2.0 - 3.0 - - - - - - - - - - - 1.0 - - 10.0 1.0 - 2.0 - - -
Avalon (Wollstonecraft Ave) - - - - - - 3.0 1.0 2.0 - - - 1.0 - - - - - - - 14.0 - - 2.0 1.0 - 2.0 - - -
Avalon Beach (Avalon (Palmgrove Rd))
-

0.8 1.2 4.0 0.4 3.2 - - - 1.4 - - - 0.2 - - - 12.0 - - 2.1 4.4 - 2.0 -
-
Bankstown Airport AWS 0.2 - - - - 2.6 2.6 0.2 0.8 0.2 - - 2.2 - - - 0.4 - - - 2.0 - - 4.8 0.6 0.2 4.6 - - -
Belrose (Evelyn Place)



1.0 2.8 2.0 1.4 3.0


1.4






1.4

0.6 1.4
1.6

-
Campbelltown (Ingleburn (Long Point)) - - - - - 3.0 4.0 - - - - - 3.0 - - - - - - - 1.0 - - 9.0 - - 2.0 - - -
Canterbury Racecourse AWS - - - 0.8 0.2 5.2 5.0 - 0.6 - - - 2.6 - - - 0.6 0.2 - -
- - 5.0 0.4 - 2.8 - -
Castle Cove (Rosebridge Ave)




2.5
1.0 1.0


1.0






2.5


1.0
1.0


Chatswood Bowling Club - - 1.0 - - - 1.0 1.0 1.0 - - - 1.0 - - - - - - - 1.0 - - - 1.0 - 1.0 - - -
Collaroy (Long Reef Golf Club)

0.2


2.6




0.8










0.8
2.4


Cronulla South Bowling Club


0.6 5.0 6.8 0.6


















3.0


Guildford (Woodville Golf Club) - - - - - 2.0 1.0 - 1.0 - - - 1.0 - - - - - - - 2.0 - - 3.0 - - 2.0 - - -
Holsworthy Control Range 0.2 -

- 3.8 3.4 - 0.8
- - 3.0 - - - - - - - - - - 4.6 0.4 - 2.4 0.2

Lidcombe (Carnarvon Golf Club) - - - - - 1.0 3.0 - - - - - 1.0 1.0 - - - - - - 1.0 - - 3.0 1.0 - 2.0 - - -
Liverpool-Scrivener St (Georges River) - - - - - 3.0 2.0 - 1.0 - - - 2.0 - - - - - - - 2.0 - - 6.0 - - 4.0 - - -
Lucas Heights (ANSTO)




4.4 3.1
1.6


0.2








1.8 6.4 0.5
3.6


Manley / Warringah (Allambie) - - 3.5 - 1.0 - 1.5 0.5 1.0 - - - 1.5 - - - - - - - 0.5 - - - 1.0 - 1.0 - - -
Manley / Warringah (Belrose) - - - - 0.5 2.5 1.0 - 2.5 - - - 1.0 - - - - - - -
- - - 1.5 - 1.5 - - -
Marrickville Golf Club - - - 1.0 - 6.0 7.0 - 1.0 - - - 2.0 - - - 1.0 - - - - - - 3.0 1.0 - 2.0 - - -
Milperra Bridge (Georges River) - - - - - 4.0 2.0 - - - - - 2.0 - - - - - - - - - - 4.0 - - 3.0 - - -
Mona Vale Golf Club - - - - - - 2.2 0.2 1.4 - - - 1.0 - - - - - - - 4.8 - - 1.0 1.8 - 2.8 - - -
Parramatta North (Masons Drive) - - - - 0.2 1.2 1.0 0.6 0.8 - - - 0.8 - - - - 0.2 - - - - - 3.0 1.6 - 2.6 - - -
Peakhurst Golf Club - - - - 1.0 9.0 5.0 - 2.0 - - - 3.0 - - - 2.0 - - - 3.0 - - 7.0 - - 3.0 - - -
Randwick Bowling Club


0.2 1.0 3.0 6.4
1.2


1.2


1.0


0.4


3.6




Riverview Observatory - - 0.4 - 0.2 2.2 1.8 - 1.0 - 0.2 0.1 2.0 - - - - - - - 0.4 - - 0.2 0.6 - 1.6 -

Rose Bay (Royal Sydney Golf Club)


0.2 0.6 0.4 7.4
1.0


3.0


1.4


1.0


1.2
1.0


Sans Souci (Public School) - - - - 1.0 13.0 4.0 - 2.0 - - - 2.0 - - - 2.0 - - - - - - 3.0 1.0 - 3.0 - - -
St Ives (Richmond Avenue)



0.6 4.4 0.6 0.6 4.0


4.0






4.0

2.6




-
Strathfield Golf Club - - - - - 3.0 3.0 - 1.0 - - - 2.0 - - - 1.0 - - - - - - 5.0 - - 3.0 - - -
Sydney (Observatory Hill) - - - - - 1.4 4.2 - 0.8 - - - 4.0 0.2 - - 1.4 - - - - - - - 0.4 - 1.0 - - -
Sydney Airport AMO - - - 1.0 1.4 7.6 4.6 0.2 1.6 - - - 0.8 - - - 2.4 - - - 0.2 - - 2.0 0.4 - 2.2 - - -
Sydney Olympic Park (Sydney Olympic Pk A - - - - 0.2 2.4 1.6 0.8 0.2
- - 1.8 - - - - - - - 0.2 - - 2.8 0.2 - 2.4 - - -
Terrey Hills AWS - - - - 0.8 1.6 2.8 1.4 4.4 - - - 2.6 - - - - - - - 0.2 - - 0.6 1.4 0.2 3.0 - - -
Turramurra (Kissing Point Road)




0.8 0.8
3.2


5.6






0.2

0.6 1.2
1.6

-
Metropolitan (West) (67)123456789101112131415161718192021222324252627282930
Abbotsbury (Fairfield City Farm) - - - - - - 1.0 - 1.0 1.0 - - - - - - - - - - 7.0 - - 7.0 - - 3.0 - - -
Badgerys Creek AWS - - - - 0.2 3.0 2.4 0.2 0.8 - - - - - - - - - - - 0.4 - 1.6 5.8 - - 2.8 - - -
Baulkham Hills (Swimming Pool ) - - - - - 0.5 - 0.5 1.5 - - - 4.5 - - - - - - - - - - 1.5 1.0 - 4.0 - - -
Baulkham Hills Eucalyptus Ct - - - - - 0.5 0.5 0.5 1.0 - - - 1.5 - - - - - - - - - - 0.5 1.5 - 2.5 - - -
Berowra (Goodwyn Road)





7.4 3.8 1.6


3.8









1.0





Blacktown (Dog Pound) - - - - - - 1.5 0.5 0.5 0.5 - - 0.5 - - - - - - - 1.5 - - 1.5 1.5 - 2.0 - - -
Box Hill (Hynds Road) - - - - - - 1.0 1.0 1.0 - - - 1.0 - - - - - - - - - - - 1.0 - 7.0 - - -
Castle Hill (Kathleen Ave)


0.6 0.3 1.2 0.5 0.3 1.0


5.2



0.1




3.0 0.8
3.6


Glenorie (Old Northern Rd)




5.0 2.0
3.8


3.0











3.0



Greystanes (Cumberland Golf Club) - - - - - - 1.0 - 0.5 - - - 1.0 - - - - - - - 0.5 - - 2.5 0.5 - 2.0 - - -
Hawkesbury River (Sackville Downstream) - - - - 0.5 - 1.5 0.5 3.5 - - - 3.5 0.5 - - - - - - - - - - - - 1.5 - - -
Horsley Park Equestrian Centre AWS - -
0.2 - 1.0 0.4 0.4 1.0 - - - 3.4 - - - - - - - 7.4 - - 6.4 0.8 0.2
- - -
Kelso Ck (Kelso Creek U/S Levee (Georges 0.5 - - - - 5.5 4.0 - 0.5 - - - 1.0 - - - 1.0 - - - 5.5 - - 7.0 0.5 - 3.5 - - -
Kings Langley (NSW Soccer Federation) - - - - - 0.5 - 0.5 0.5 - - - 4.0 - - - - - - - - - - 1.0 0.5 - 3.5 - - -
Kings Langley (Solander Rd) - - - - 0.2 0.4 0.8 0.2 1.0 - - - 1.6 - - - 0.2 0.2 - - - - - 0.8 1.4 - 5.2 - - -
Liverpool (Michael Wenden Centre) - - - 0.2 - 4.6 1.6 0.6 1.2 - - - 3.6 - - - 0.4 - - - 5.4 - - 6.9 1.2 - 4.4 - - -
Lower Portland (Hawkesbury River) - - - - - 0.2 1.2 1.4 5.0 - - - 1.2 - - - - - - - 0.6 - - - 0.2 - 3.0 - - -
Maroota (Tobruk) - - - - - 1.8 1.0 2.8 1.6 - - 0.4 6.0 - - - - - - - 2.4 - - 1.0 1.6 - 3.0 - - -
Merrylands (Welsford Street)




1.4





2.4









2.2

3.8


Merrylands West (Finlayson Creek) - - - - - 0.5 - 1.0 0.5 - - - 2.5 - - - - - - - 1.0 - - 3.0 0.5 - 1.5 - - -
North Parramatta (Burnside Homes) - - - - - 1.0 0.5 0.5 0.5 - - - 0.5 - - - - - - - - - - 2.5 1.0 - 2.0 0.5 - -
North Rocks (Muirfield Golf Club) - - - - - 1.5 0.5 1.0 1.5 - - - 1.0 - - - - - - - - - - 3.5 1.0 - 4.5 - - -
Northmead Bowling Club - 0.5 0.5 - - 0.5 0.5 0.5 0.5 - - - 0.5 - - - - - - - - - - 1.0 1.0 - 2.5 - - 0.5
Parramatta (Baulkham Hills West (Sierra - - - - - - 0.5 0.5 0.5 - - - 1.5 - - - - - - - - - - - 0.5 - 4.0 - - -
Penrith Lakes AWS - - - - 0.6 1.2 2.2 1.0 2.0 0.2 - - 1.6 - 0.2 - - - - - - - -
0.4 - 4.2 - -
Prospect Reservoir - - - 0.6 - 0.4 0.8 0.6 0.9 - - - 1.2 - - - - 0.1 - - 1.5 - - 2.4 1.4 - 2.5 - - -
Richmond RAAF - - - 0.2 0.6 0.4 0.6 0.4 8.4 0.2 - - 0.4 - - - - 0.2 - - - - - - - - 2.2 0.2 - -
Seven Hills (Radio FM 103.2) - - - - - 0.5 0.5 - 0.5 - - - 2.0 0.5 - - - - - - 0.5 - - 0.5 0.5 0.5 4.0 - - -
St Clair (Juba Close) - - - - - 1.0 2.0 - 1.0 - - - - - - - - - - - 2.0 - - 7.0 - - 3.0 - - -
Toongabbie Bowling Club - - - - - - 0.5 - 0.5 - - - 0.5 - - - - - - - - - - 2.5 0.5 - 4.5 - - -
Toongabbie Ck (Redbank Road (Toongabbee - - - - - 1.0 0.5 - 0.5 - - - 0.5 - - - - - - - - - - 1.0 0.5 - 3.0 - - -
West Pennant Hills (Cumberland S F Alert - - - - 0.5 2.0 0.5 0.5 1.0 - - - 6.0 0.5 - - - - - - - - - 6.5 1.0 - 2.0 - - -
Willmot (Resolution Ave) - - - - - 1.0 - - 3.0 - - - - - - - - - - - - - - 2.0 - - 2.0 - - -
Illawarra (68)123456789101112131415161718192021222324252627282930
Camden Airport AWS - - - 1.2 0.6 6.4 2.8 0.2 - - - - 1.0 - - - - - - - - - 0.6 3.6 - - 3.8 - - -
Campbelltown (Kentlyn (Georges River Roa - - - - 1.0 2.0 5.0 - - - - - 2.0 - - - 1.0 - - - - - - 6.0 - - 3.0 - - -
Campbelltown (Mount Annan) - - - - 0.6 6.4 4.0 0.4
- - - 4.2 - - - 0.4 - - - - - 1.2 6.0 0.4 - 6.2 - - -
Rossmore (South Creek) - - - - - 8.0 1.0 1.0 - - - - 2.0 - - - - - - - - - 1.0 7.0 - - 2.0 - - -

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Sydney - Greater Sydney 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 10 am on Tuesday 1 December 2009. 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 20 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.

Further information

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