Sydney in October 2011: Dry, cloudy month for Sydney

  • Below average rainfall
  • Average maximum temperatures; below average in western Sydney
  • Above average minimum temperatures

Rainfall

Sydney Observatory Hill recorded 37.4 mm during October 2011, below the historical average of 77.4 mm. Only two days exceeded 5 mm during the month, reaching just 9.8 mm on the 2nd and 7.2 mm on the 15th, compared to an average of 4 days. Rainfall was average to below average throughout the Metropolitan region, with heaviest totals on the coast, reaching 88 mm at Avalon on the Northern Beaches and 117 mm at Cronulla in the Eastern Suburbs. The high monthly total at Cronulla was mostly due to isolated heavy rainfall on the 15th, with 24-hour totals of 78 mm.

Temperature

The average maximum temperature at Sydney Observatory Hill was 22.2 °C, close to the historical average of 22.1 °C, associated with generally cloudy conditions during the month. Temperatures were below average throughout the rest of the Metropolitan region, including 1.2 °C below average at Parramatta North, similar to conditions in October 2010. Two days reached 30 °C at Sydney Observatory Hill during the month, average for October, reaching 34.3 °C on the 24th.

The average minimum temperature at Observatory Hill during October was 14.4 °C, 0.8 °C above the historical average, with temperatures generally above average in eastern parts of the city and closer to average in the west. The average temperature was consequently 18.3 °C, slightly above average for October.

Wind

Winds were predominantly easterly at Sydney Airport during the month, with 90% of 3pm winds between NNE and SSE, typical for October. There were 2 strong wind days during the month, well below the historical average of 6-7 days, and the fewest since October 1988. The strongest wind gust at the Airport was 74 km/hr on the 30th, with the strongest winds anywhere in the Metropolitan region reaching 80 km/hr at Port Botany on the same day.

Other phenomena

Sydney Airport recorded 6.7 hours of sunshine during October, below the historical average of 7.8 hours. Only five clear days were reported at the Airport, below the historical average of 8 days and the fewest since October 2003 (3 days). No thunderstorms were reported at Sydney Airport, with 7 reported in the Metropolitan region.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in October 2011
Hottest day 34.6 °C at Sydney Airport AMO on the 24th
Warmest days on average 23.6 °C at Penrith Lakes AWS
Coolest days on average 20.7 °C at Terrey Hills AWS
Coldest day 13.2 °C at Springwood (Valley Heights) on the 2nd
Coldest night 3.8 °C at Camden Airport AWS on the 12th
Coolest nights on average 9.9 °C at Campbelltown (Mount Annan)
Warmest nights on average 14.4 °C at Sydney (Observatory Hill)
Warmest night 19.2 °C at Richmond RAAF on the 25th
Warmest on average overall 18.3 °C at Sydney (Observatory Hill)
Coolest on average overall 16.0 °C at Springwood (Valley Heights)
Wettest overall 117.4 mm at Cronulla South Bowling Club
Wettest day 78.0 mm at Cronulla South Bowling Club on the 15th
Highest wind gust 80 km/h at Port Botany (Molineux Point AWS) on the 30th

Summary statistics for October 2011
Maximum temperatures
for October
(°C)
Minimum temperatures
for October
(°C)
Rainfall
for October
(millimetres)
Mean for
October
2011
Diff
from
average
Highest for
October
2011
Mean for
October
2011
Diff
from
average
Lowest for
October
2011
Total for
October
2011
Average
for
October
Rank of
October
2011
Fraction of
October
average
Badgerys Creek AWS 22.9   33.5 24th 10.5   4.9 12th 42.6
Bankstown Airport AWS 22.9 -0.8 33.4 24th 11.9 +0.1 6.3 1st 27.6 61.3 average 45%
Camden Airport AWS 23.3 -0.8 33.9 24th 10.0 0.0 3.8 12th 32.6 66.1 average 49%
Campbelltown (Mount Annan) 23.1   33.6 24th 9.9   4.2 1st 37.0
Canterbury Racecourse AWS 22.2   32.9 24th 12.2   5.6 1st 24.0
Holsworthy Control Range 22.7   33.3 24th 10.7   4.6 1st 30.0
Horsley Park Equestrian Centre AWS 22.8   33.6 24th 11.5   6.0 1st 64.0
Parramatta North (Masons Drive) 22.7 -1.2 32.3 24th 11.7 -0.2 6.9 1st 33.6 69.9 average 48%
Penrith Lakes AWS 23.6   34.5 24th 11.9   7.0 1st 46.4
Prospect Reservoir 22.9 -0.8 33.3 24th 11.9 -0.2 5.7 12th 42.5 59.3 average 72%
Richmond RAAF 23.0   32.7 24th 10.9   5.2 1st 36.8
Riverview Observatory 22.0 -0.7 32.6 24th 12.4 +0.4 7.6 1st 36.5 76.8 low 48%
Springwood (Valley Heights) 21.2   32.3 24th 10.8   6.7 11th 58.4 74.4 average 78%
Sydney (Observatory Hill) 22.2 +0.1 34.3 24th 14.4 +0.8 10.0 5th 37.4 77.4 average 48%
Sydney Airport AMO 21.9 -0.6 34.6 24th 14.3 +1.2 10.0 1st 46.4 71.3 average 65%
Terrey Hills AWS 20.7   31.7 24th 12.5   8.3 5th 61.8

Daily rainfall
Hunter (61)12345678910111213141516171819202122232425262728293031
Webbs Ck-Wisemans Ferry (Hawkesbury Rive - 8.2 12.0 - - - 1.6 34.0 1.4 - - - - - - - - - - - - - - - 0.2 5.6 1.6 0.2 - - -
Central Tablelands (South) (63)12345678910111213141516171819202122232425262728293031
Sackville Ferry (Hawkesbury River) - 7.6 3.6 - - - 2.0 17.2 0.8 0.2 - - - - - - - - - - - - - - 0.4 12.4 0.4 - - 0.4 1.4
Springwood (Valley Heights) - 0.6 8.0 - - 0.2 2.2 12.8 10.2 - - - 0.2 0.4 3.6 - - - - - - - - - - 14.2 5.2 0.2 - - 0.6
Valley Heights (Sun Valley Rd) - 0.6



2.2 13.0 10.0 - - - 0.2




- - -









Metropolitan (East) (66)12345678910111213141516171819202122232425262728293031
Abbotsford (Blackwall Point Rd)
7.2 4.9


5.0 3.0 1.0














2.0 4.0 3.0



Auburn (Rosnay Golf Club) - 4.0 4.0 - - - 2.0 2.0 2.0 - - - - - - - 1.0 - - - - - - - 2.0 8.0 2.0 - - 1.0 -
Audley (Royal National Park) - 9.0 12.0 - - - 3.0 1.0 - - - - - - 10.0 - 1.0 - - - - - - - 2.0 6.0 - - - 2.0 -
Avalon (Wollstonecraft Ave) - 45.0 16.0 - - - 2.0 4.0 2.0 - - - - - 1.0 - 12.0 - - - - - - - 1.0 4.0 1.0 - - - -
Avalon Beach (Avalon (Palmgrove Rd))


0.4











12.0













Bankstown Airport AWS - 3.4 8.2 - - - 2.2 0.6 0.8 - - - - - 0.6 - - - - - - - - - 3.0 5.4 3.4 - - - -
Belrose (Evelyn Place)
11.2 18.6 0.4

3.6 2.6 1.0




4.0
0.4






1.4 2.0 4.0


1.4
Campbelltown (Ingleburn (Long Point)) - 4.0 13.0 - - - 5.0 - 2.0 - - - - - - - - - - - - - - - 4.0 7.0 - - - - -
Canterbury Racecourse AWS - 6.6 4.2 - - - 2.2 1.2 - - - - - - 2.4 0.2 - - - - - - - - 1.4 4.4 1.4 - - - -
Castle Cove (Rosebridge Ave)

13.0


2.5 4.5





3.0
2.0






1.0 3.0 2.5



Chatswood Bowling Club - 7.0 3.0 - - - 2.0 5.0 3.0 - - - - - 1.0 - 2.0 - - - - - - - 1.0 4.0 5.0 - - - -
Collaroy (Long Reef Golf Club)
16.4
1.6

2.8 1.8 1.0




7.8
2.8






0.8 1.6 1.0


0.2
Concord Golf Club
12.4 5.6



2.6 1.4




0.2















Cronulla South Bowling Club
»» »» 14.2

4.0 5.0



5.0
78.0 »» 3.0






2.6 5.6




Guildford (Woodville Golf Club) - 4.0 4.0 - - - 2.0 2.0 1.0 - - - - - - - - - - - - - - - 4.0 6.0 2.0 - - - -
Holsworthy Control Range - 5.0 6.4 - - - 3.0 2.2 0.2 - - - - - - 0.2 - - - - - - - - 2.6 9.4 0.8 0.2 - - -
Lidcombe (Carnarvon Golf Club) - 2.0 1.0 - - - 1.0 1.0 1.0 - - - - - 1.0 - - - - - - - - - 2.0 2.0 2.0 - - - -
Liverpool-Scrivener St (Georges River) - 2.0 5.0 - - - 2.0 1.0 1.0 - - - - - - - - - - - - - - - 4.0 5.0 1.0 1.0 - - -
Lucas Heights (ANSTO)

9.2


3.8 2.0















2.0 7.0 0.6



Macquarie Park (Willandra Village)

5.8



4.4 5.2




1.0








1.8 4.6 3.6



Manley / Warringah (Allambie) - 16.5 11.0 - - - 2.0 2.0 2.5 - - - - - 8.5 - 1.5 - - - - - - - 0.5 2.0 2.5 - - - 1.0
Manley / Warringah (Belrose) - 5.0 15.5 -
- 3.0 2.5
- - - - - 3.0 - 0.5 - - - - - - - 1.0 3.5

- - 1.0
Marrickville Golf Club - 10.0 4.0 - - - 2.0 2.0 - - - - - - 5.0 - 1.0 - - - - - - - 2.0 4.0 2.0 - - - -
Milperra Bridge (Georges River) - 2.0 10.0 - - - 1.0 - 1.0 - - - - - - - - - - - - - - - 2.0 5.0 2.0 - - - -
Mona Vale Golf Club - 23.6 3.8 - - - 3.2 6.6 1.0 - 0.2 - - - 5.2 - 3.8 - - - 0.2 - 0.2 0.2 1.2 2.0 0.4 - - - 0.4
Parramatta (Erts) - 2.0 2.5 - - 0.5 1.0 1.5 1.5 0.5 - - - - - - - - - - - - - - 3.0 2.0 3.5 - - - -
Parramatta North (Masons Drive) - 6.2 5.4 - - - 2.6 3.6 1.2 - - - - - 0.4 - - - - - - - - - 2.8 7.8 3.6 - - - -
Peakhurst Golf Club - 3.0 5.0 - - - 2.0 1.0 1.0 - - - - - 4.0 - 1.0 - - - - - - - 3.0 4.0 3.0 - - - -
Randwick Bowling Club













7.2
2.8 0.2




2.0 1.4 2.0 1.4



Riverview Observatory - »» 13.5 - - - 4.4 3.6 »» 1.8 - - - - 1.2 »» 1.6 - - - - - - - 1.2 4.4 4.8 - - - -
Rose Bay (Royal Sydney Golf Club)
9.2 7.8 1.2

1.6 0.8 2.2


0.6
3.6
5.4





- 1.0 1.8 1.6



Sans Souci (Public School) - - - - - - - - - - - - - - 9.0 - - - - - - - - - 1.0 - - - - - -
St Ives (Richmond Avenue)
11.2 14.0


3.4 2.6 2.0













»» 3.0 4.0 6.6
0.2
0.8
Strathfield Golf Club - 8.0 5.0 - - - 2.0 1.0 1.0 - - - - - 1.0 - - - - - - - - - 3.0 4.0 2.0 1.0 - - -
Sydney (Observatory Hill) 0.2 9.8 4.6 0.2 0.2 - 2.2 2.0 1.0 0.2 - - 0.2 - 7.2 0.2 3.2 0.2 - - 0.2 - - - 0.8 2.8 2.2 - - - -
Sydney Airport AMO - 7.0 6.6 0.4 - - 1.2 3.0 0.2 - - - 2.2 - 17.4 - 2.2 0.2 - - - - - - 1.4 3.2 1.2 0.2 - - -
Terrey Hills AWS - 21.2 17.8 - - - 2.8 4.2 1.6 - - - - - 3.0 - - - - - - - - - 1.4 6.6 1.8 0.8 - - 0.6
Turramurra (Kissing Point Road)
10.0 4.6


3.4 3.0 3.0




1.0
0.6






2.0 6.6
4.4

0.4
Metropolitan (West) (67)12345678910111213141516171819202122232425262728293031
Abbotsbury (Fairfield City Farm) - 3.0 7.0 - - - 1.0 1.0 23.0 - - - - - - - - - - - - - - - 3.0 12.0 2.0 - - 1.0 -
Badgerys Creek AWS - 4.6 10.8 0.2 - - 1.6 5.4 3.8 - - - - - - - - - - - - - - - 0.8 12.0 1.4 - - 1.8 0.2
Baulkham Hills (Swimming Pool ) - 6.5 5.5 - - - 2.5 13.5 8.5 - - - - 1.5 - - - - - - - - - - 2.5 8.0 2.5 - - - -
Baulkham Hills Eucalyptus Ct - 2.5 5.0 - - - 2.0 8.5 4.0 0.5 - - - 0.5 - - - - - - - - - - 2.0 7.0 3.0 0.5 - - -
Berowra (Goodwyn Road)
21.4 23.8


3.6
21.2




1.6








1.4 5.4



1.4
Blacktown (Dog Pound) - 2.5 9.0 - - - 1.0 2.5 16.0 - - - 0.5 - - - - - - - - - - - 3.0 4.5 5.0 - 0.5 - 1.0
Box Hill (Hynds Road) - 3.0 6.0 - - - 2.0 5.0 4.0 - - - - - - - - - - - - - - - 3.0 6.0 2.0 - - - 1.0
Castle Hill (Kathleen Ave)
6.8 6.8


3.0 6.0 35.4














3.8 8.0 2.4



Glenorie (Old Northern Rd)
12.0 4.2


3.0 13.0 8.0














1.4 12.0 2.0 1.4

2.4
Greystanes (Cumberland Golf Club) - 3.5 7.5 - - - 1.5 2.0 3.0 - - - - - - - - - - - - - - - 3.5 3.5 4.5 - - - -
Hawkesbury River (Sackville Downstream) - 3.5 3.5 - - - 1.5

- - -
- -




- - - -
11.0 0.5 -
-
Horsley Park Equestrian Centre AWS - 2.2 8.8 - - - 0.8 2.4 32.4 - - - - - 0.2 0.2 - - - - - - - - 3.4 10.6 3.0 - - - -
Kelso Ck (Kelso Creek U/S Levee (Georges - 6.0 13.5 - - - 3.0 1.0 0.5 - - - - - 1.0 - - - - - - - - - 4.5 4.5 2.5 - - - -
Kings Langley (NSW Soccer Federation) - 3.0 5.5 0.5 1.0 - 2.0 3.0 29.0 0.5 - - - - - - - - - - - - - - 2.0 8.5 2.0 - - - -
Kings Langley (Solander Rd) - 2.0 5.8 - - - 2.0 3.0 13.6 - - - - - - - - - - - - - - - 2.2 7.0 3.0 - - - 0.2
Liverpool (Michael Wenden Centre) 6.8 3.8 7.0 - - »» 2.2 1.8 6.0 - -
»» »» »» 0.4 - - - - - - - - 3.4 8.4 »» »» 1.0 - -
Lower Portland (Hawkesbury River) - 10.0 4.4 - - - 1.8 13.2 4.2 - - - - -

- - - - - - - - - 10.4 0.6 0.2 - 0.4 3.6
Maroota (Tobruk) - - 0.2 - - - 0.2 - - - 0.2 - - 0.2 - - - - - - - - - - - 0.2 - 0.2 - - 0.2
Merrylands (Welsford Street)





1.8 2.2 3.0















7.8 4.8



Merrylands West (Finlayson Creek) - 6.0 11.5 - - - 1.5 3.0 6.0 1.0 - - 3.5 - - - - - - - - - - - 5.0 8.0 6.0 - - - -
North Parramatta (Burnside Homes) - 5.5 5.0 - 1.0 - 2.0 3.5 0.5 - - - - - - - - - - - - - - - 2.0 7.0 3.5 - - - -
North Rocks (Muirfield Golf Club) - 6.5 6.0 - - - 4.5 10.0 1.5 - - - - - - - - - - - - - - - 3.5 7.5 4.0 - - - -
Northmead Bowling Club - 3.0


2.5 2.0 2.5 1.0 - - - - - 0.5 - - - - - - - - - 2.5 5.5 3.0 0.5 - - 0.5
Parramatta (Baulkham Hills West (Sierra - 2.5 5.5 - - - 2.0 3.5 8.0 - - - - 1.0 - - - - - - - - - - 2.5 6.0 2.5 - 0.5 - -
Penrith Lakes AWS - 0.8 13.6 0.6 - - 1.0 7.2 9.6 - - - - - 0.8 1.0 - - - - - - - - 0.4 8.2 1.6 0.2 - - 1.4
Prospect Reservoir - 2.6 10.4 - - - 1.2 2.6 11.4 - - - - - 0.3 - - - - - - - - - 3.7 5.7 4.0 - - - 0.6
Richmond RAAF - 0.8 6.4 - 0.4 - 2.2 12.8 3.0 0.2 - - - - - - - - - - - - - - 0.6 9.2 1.2 - - - -
Seven Hills (Radio FM 103.2) - 3.0 7.5 - - - 1.5 2.5 5.0 - - - - 0.5 - - - - - - - - - - 3.0 5.0 3.5 - - - 1.0
Seven Hills (Collins St)
2.6



»» 4.8 10.0














3.0 6.4 3.6



South Creek (Elizabeth Drive)
0.5 4.0


1.0 1.5 2.0














0.5 6.0 0.5

1.0
St Clair (Juba Close) - 1.0 6.0 - - - - 2.0 1.0 - - - - - - - - - - - - - - - 1.0 5.0 1.0 - - - -
Toongabbie Bowling Club - 1.0 6.0 - 0.5 - 1.5 3.5 3.5 - - - - - - - - - - - - - - - 2.5 5.5 3.5 - - - -
Toongabbie Ck (Redbank Road (Toongabbee - 2.5 4.5 - - - 2.0 3.0 1.0 - - - - 1.5 - - - - - - - - - - 2.5 6.0 5.0 - - - -
West Pennant Hills (Cumberland S F Alert - 8.0 4.5 0.5 - 0.5 2.5 8.5 16.5 - - - - - - - - 0.5 - - - - - - 2.5 6.0 3.0 - - - -
Willmot (Resolution Ave) - 1.0 6.0 - - - 1.0 1.0 12.0 - - - - - - - - - - - - - - - - 4.0 2.0 - - - 1.0
Windsor SWC (Hawkesbury River) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Illawarra (68)12345678910111213141516171819202122232425262728293031
Camden Airport AWS - 5.8 5.8 - - - 2.2 1.8 4.8 - - - - - 0.2 0.2 - - - - - - - - 0.4 9.4 1.6 0.2 - 0.2 -
Camden Valley Golf Resort - 6.0 5.0 - - - 2.0 - 2.0 - - - - - 2.0 - - - - - - - - - 1.0 9.0 1.0 - - - -
Campbelltown (Kentlyn (Georges River Roa - 2.0 2.0 - - - 4.0 - 1.0 - - - - - - - - - - - - - - - 4.0 7.0 2.0 - - - -
Campbelltown (Mount Annan) - 9.6 5.8 - - - 2.8 1.4 3.0 - - - - - 1.0 0.2 - - - - - - - - 3.4 8.6 0.8 0.2 - - 0.2
Rossmore (South Creek) - 3.0 5.0 - - - 2.0 3.0 2.0 - - - - - - - - - - - - - - - 1.0 13.0 2.0 - - - -

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 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 November 2011. 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

Media
(03) 9669 4057
Enquiries