Sydney in August 2014: Wettest, cloudiest August since 1998

August 2014 was a cool and wet month for Sydney, with most of the city recording more than three times the historical average rainfall. Sydney Observatory Hill recorded its wettest August and most August rain days since 1998, with particularly heavy rain associated with an East Coast Low over 17-19 August, as well as persistent onshore flow over the 26th-27th. Notably, there were 10 days with at least 10 mm at Sydney Observatory Hill (average 2 days), the equal-second-highest on record for August and the most since 1908.

Both maximum and minimum temperatures were close to normal at Observatory Hill, making it the coolest August since 2010, with below-average daytime temperatures across most of the city. The cool temperatures were associated with the rainy conditions and well below average sunshine hours (cloudiest August since 1998), as well as a lack of warm days.

  • Wettest August since 1998
  • Close to average temperatures

Further information

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Extremes in August 2014
Hottest day 23.2 °C at Sydney (Observatory Hill) on the 10th
Warmest days on average 18.9 °C at Penrith Lakes AWS
Coolest days on average 16.2 °C at Terrey Hills AWS
Coldest day 12.0 °C at Terrey Hills AWS on the 11th
Coldest night -2.2 °C at Camden Airport AWS on the 3rd
Coolest nights on average 5.1 °C at Camden Airport AWS
Warmest nights on average 9.7 °C at Sydney Airport AMO
Warmest night 15.9 °C at Sydney (Observatory Hill) on the 1st
Warmest on average overall 14.0 °C at Sydney (Observatory Hill)
Coolest on average overall 11.6 °C at Springwood (Valley Heights)
Wettest overall 338.0 mm at Audley (Royal National Park)
Wettest day 92.0 mm at Turramurra (Kissing Point Road) on the 19th
Highest wind gust 89 km/h at Sydney Airport AMO on the 18th

Summary statistics for August 2014
Maximum temperatures
for August
(°C)
Minimum temperatures
for August
(°C)
Rainfall
for August
(millimetres)
Mean for
August
2014
Diff
from
average
Highest for
August
2014
Mean for
August
2014
Diff
from
average
Lowest for
August
2014
Total for
August
2014
Average
for
August
Rank of
August
2014
Fraction of
August
average
Badgerys Creek AWS 18.1   22.6 10th 6.1   -0.4 6th 135.8
Bankstown Airport AWS 18.3 -0.7 22.4 10th 6.9 +0.9 1.2 6th 179.2 49.9 v high 359%
Camden Airport AWS 18.6 -0.5 22.5 31st 5.1 +1.3 -2.2 3rd 193.6 45.2 v high 428%
Campbelltown (Mount Annan) 18.5   22.5 31st 5.8   -1.3 3rd 150.4
Canterbury Racecourse AWS 17.4   21.8 10th 7.0   1.6 4th 247.4
Holsworthy Aerodrome AWS 17.9   22.0 10th 6.7   0.1 6th 149.6
Holsworthy Control Range 18.1   21.9 10th 6.4   0.3 6th 143.8
Horsley Park Equestrian Centre AWS 18.2   22.1 31st 7.4   1.5 6th 123.0
Parramatta North (Masons Drive) 18.0 -1.1 22.2 10th 7.0 -0.1 2.4 3rd 185.0 56.1 v high 330%
Penrith Lakes AWS 18.9   22.8 10th 7.3   1.5 3rd 103.0
Prospect Reservoir 18.1 -0.7 22.0 9th 7.3 +0.5 2.5 6th 154.8 50.3 v high 308%
Richmond RAAF 18.8 -1.0 22.9 9th 5.7   -1.5 3rd 107.8 33.2 v high 325%
Springwood (Valley Heights) 16.3   21.4 9th 6.9   3.2 7th 123.4 53.6 high 230%
Sydney (Observatory Hill) 18.3 +0.5 23.2 10th 9.6 +0.6 5.5 3rd 215.2 80.7 v high 267%
Sydney Airport AMO 17.3 -1.1 22.9 10th 9.7 +1.6 4.9 3rd 257.8 77.0 v high 335%
Terrey Hills AWS 16.2   20.0 10th 8.4   4.0 3rd 235.6

Daily rainfall for August 2014
Abbotsbury (Fairfield City Farm) - - - - - - - - - - - - 3.0 - - - 24.0 44.0 23.0 1.0 - 1.0 - 2.0 - 1.0 19.0 5.0 - - -
Abbotsford (Blackwall Point Rd) - - - - - - - - - - - 15.0 14.0 - - - 26.0 18.0 »» 81.0 »» 12.0 - 33.0 - - 17.0 23.0 - - 3.0
Auburn (Rosnay Golf Club) - - - - - - - - - - - 2.0 8.0 - - - 21.0 62.0 57.0 3.0 1.0 2.0 - 1.0 - 2.0 24.0 14.0 1.0 - -
Audley (Royal National Park) - - - - - - - 3.0 2.0 - - 2.0 12.0 - - - 43.0 54.0 63.0 12.0 1.0 11.0 2.0 7.0 - 38.0 74.0 11.0 1.0 1.0 1.0
Avalon (Wollstonecraft Ave) - - - - - - - - - - - 6.0 68.0 - - 1.0 31.0 8.0 26.0 6.0 5.0 34.0 11.0 2.0 - 4.0 18.0 25.0 2.0 2.0 2.0
Avalon Beach (Avalon (Palmgrove Rd)) - - - - - - - - - - - 9.8 46.6 - 0.5 - 33.8 7.2 43.8 »» 10.8 35.0 7.8 - - 4.2 22.2 24.2 1.6 2.2
Badgerys Creek AWS - - - - - - - - - - - - 2.2 - - - 27.0 44.2 18.4 1.2 - - 0.2 5.0 - 7.4 28.4 1.6 0.2 - -
Bankstown Airport AWS - - - - - - - - 0.2 0.2 - 1.0 5.8 - - - 22.2 57.8 47.0 1.8 - 0.2 - 0.6 - 2.4 26.4 12.8 0.8 - -
Baulkham Hills (Swimming Pool ) - - - - - 1.0 - - - - - 3.5 10.0 - 0.5 - 21.0 35.0 52.5 3.0 1.0 4.0 - 6.5 - 0.5 19.0 14.5 0.5 - 2.0
Baulkham Hills Eucalyptus Ct - - - - - 0.5 - - - - - 3.0 7.0 - - - 18.0 36.5 51.0 3.5 1.5 3.0 - 4.0 - 1.0 27.0 15.5 2.0 0.5 1.0
Belrose (Evelyn Place) - - - - - - - 0.2 - - - 9.4 23.0 - - - 34.0 20.8 41.2 6.6 10.8 24.0 3.2 0.8 - 6.0 50.0 15.4 1.8 2.6
Berowra (Goodwyn Road) - - - - - - - - - - - 2.6 - - - - 41.5 7.2 - 4.4 5.6 15.8 0.4 - - 6.2 26.8 14.6 1.0 1.0 1.0
Blacktown (Dog Pound) - - - - - 0.5 - - - - - - 3.0 - - - 22.5 32.0 28.5 3.0 0.5 1.0 - 5.0 - 3.0 28.0 7.0 1.0 - 0.5
Box Hill (Hynds Road) - - - - - - - - - - - - 6.0 - - - 29.0 18.0 37.0 4.0 - 4.0 - 5.0 - 1.0 32.0 10.0 2.0 - -
Camden Airport AWS - 0.2 - - - 0.2 - - - - - - - - - - 29.6 78.0 9.2 0.2 - 0.4 - 31.8 1.0 6.0 12.4 11.0 13.4 0.2 -
Campbelltown (Ingleburn (Long Point)) - - - - - - - - - - - - 3.0 - - - 36.0 63.0 47.0 2.0 - - - 1.0 - 6.0 57.0 5.0 - - -
Campbelltown (Kentlyn (Georges River Roa - - - - - - - - 1.0 - - - 3.0 - - - 25.0 49.0 45.0 2.0 - 1.0 - - - 8.0 76.0 4.0 1.0 - -
Campbelltown (Mount Annan) - - - - - -
- - -
- - -
- 19.8 50.2 24.0 1.8 - - 0.2 0.8 0.2 7.6 44.8 0.4 0.4 0.2 -
Canterbury Racecourse AWS - - - - - - -
0.2 - 0.4 14.4 15.0 - - - 28.4 40.8 60.8 7.4 3.6 1.2 1.2 3.2 - 6.4 38.8 20.2 3.6 0.6 1.2
Castle Cove (Rosebridge Ave) - - - - - - - - - - - 13.0 25.0 - - - 33.0 22.0 61.0 11.0 11.0 17.5 2.0 5.0 - 5.0 22.0 15.0 6.0 5.0 5.5
Castle Hill (Kathleen Ave)













0.4 3.0














Castlereagh (Castlereagh Road) - - - - - - - - - - - 1.0 - - - 36.0 5.6 18.2












Centennial Park - - - - - - - - 1.2 - 0.8 25.0 12.6 - - - 39.0 20.8 15.8 8.0 17.4 2.2 6.4 3.6 0.1 21.2




Chatswood Bowling Club - - - - - - - - - - - 13.0 15.0 - - - 32.0 31.0 56.0 9.0 6.0 9.0 3.0 3.0 - 5.0 18.0 26.0 2.0 3.0 4.0
Collaroy (Long Reef Golf Club)










9.0 25.8


28.8 7.2 34.2 3.6 6.4 20.4 2.2 1.0
7.2
20.2 6.2

Concord (Brays Rd) - - - - - - - - - - - 14.8 12.8 - - - 24.0 41.4 62.4 7.2 2.0 - 0.6 1.8 - - 20.4 22.4 1.4 1.0 1.6
Concord Golf Club - - - - - - - - - - - 9.4 9.2 - - - 23.0 43.8 66.6 6.6 3.8 3.6 - 2.4 - 3.8 18.2



Cronulla South Bowling Club










10.0 20.0
3.0 1.8 35.0 46.0 31.0 9.0 4.0 1.0 6.0







Frenchs Forest (Frenchs Forest Rd) - - - - - - - - - - - 11.0 29.0 - - - 34.0 16.0 44.0 10.0 12.0 26.0 3.0 1.0 - 7.0 50.0 19.0 3.0 2.0 3.0
Glenorie (Old Northern Rd)











10.0


29.0 11.0 70.0 4.0 2.0 11.0
11.0

27.0 7.4 2.0
2.0
Greystanes (Cumberland Golf Club) - - - - - - - - - - - 0.5 4.5 - - - 20.0 35.5 33.0 2.0 0.5 1.5 - 3.0 - 1.5 24.0 8.5 0.5 - 1.0
Guildford (Woodville Golf Club) - - - - - - - - - - - 1.0 7.0 - - - 20.0 62.0 66.0 2.0 1.0 1.0 - 2.0 - 2.0 24.0 11.0 1.0 - -
Holsworthy Aerodrome AWS -
- - - - - 0.2 0.4 - - 0.2 2.8 - - - 23.2 35.8 37.6 2.6 - 1.2 0.4 0.6 - 3.8 35.2 5.2 0.2 - 0.2
Holsworthy Control Range - - - - - - - - 0.2 - - - 2.6 - - - 23.8 43.6 34.6 2.2 - 0.6 0.4 2.4 - 2.0 30.8
- 0.2 0.4
Horsley Park Equestrian Centre AWS - - - - - - - - - - - 0.4 2.8 - - - 24.4 42.0 24.0 1.0 - 0.2 0.2 2.0 0.2 1.8 23.0
0.2 - 0.8
Kings Langley (NSW Soccer Federation) 0.5 - - - 0.5 - - - - - - 2.0 7.0 - - - 21.0 34.0 46.5 3.0 1.5 2.5 0.5 5.0 - 0.5 20.0 12.5 1.0 1.0 0.5
Lidcombe (Carnarvon Golf Club) - - - - - - - - - - - 4.0 8.0 - - - 21.0 52.0 66.0 4.0 2.0 2.0 - 2.0 - 3.0 29.0 18.0 1.0 1.0 -
Liverpool-Scrivener St (Georges River) - - - - - - - - - - - - 2.0 - - - 21.0 50.0 18.0 2.0 - - - 1.0 - 1.0 21.0 5.0 - - -
Lucas Heights (ANSTO) - - - - - - - 1.2 - - - 1.6 6.8 - - - 25.4 44.5 52.2 7.2 - 1.5 - 0.8 - - 73.8 5.2

-
Manley / Warringah (Allambie) - - - - - - - - - - - 10.0 28.5 - - - 29.5 10.5 32.0 6.0 9.5 20.5 3.0 2.5 - 5.0 35.5 15.0 2.0 3.0 1.5
Maroota (Tobruk) - - - - - - - - 0.4 - - - 6.4 - - 0.2 16.8 10.2 48.6 1.2 1.2 12.4 1.4 11.0 0.4 0.2 22.2 19.4 1.6 0.4 0.4
Marrickville Golf Club - - - - - - - 1.0 - - - 20.0 17.0 - - - 38.0 33.0 46.0 9.0 6.0 2.0 4.0 2.0 - 7.0 32.0 22.0 1.0 2.0 1.0
Merrylands West (Finlayson Creek) - - - - 1.0 - - - - - - 0.5 5.0 - - - 18.0 49.0 39.0 1.5 - 1.0 - 2.5 - 2.0 23.5 7.5 0.5 - 0.5
Milperra Bridge (Georges River) - - - - - - - - - - - 1.0 4.0 - - - 20.0 36.0 25.0 1.0 - - - 1.0 - 3.0 29.0 9.0 - - -
Mona Vale Golf Club - - - - 0.2 - - - 0.4 - - 10.6 22.2 - - 0.4 34.0 7.6 27.8 8.0 7.8 17.8 8.2 1.8 0.4 3.2 20.0 28.4 2.0 2.2 1.6
North Parramatta (Burnside Homes) - - - - - - - - - - - 1.5 7.0 - - - 20.0 52.0 13.5 3.0 3.0 2.0 0.5 3.0 - 1.5 24.5 11.5 2.5 1.0 0.5
North Richmond (Hospital) - - - - - - - - - - - - 1.0 - - - 31.0 13.0 7.0 1.0 - 3.0 - 1.0 - 4.0 34.0 8.0 6.0 - -
North Rocks (Muirfield Golf Club) - - - - 0.5 - - - - - - 4.5 11.0 - - - 18.5 39.5 58.0 3.0 1.0 3.0 0.5 3.0 - 1.5 23.0 16.5 0.5 0.5 1.5
Northmead Bowling Club - - - - - - - - - - - 3.0 7.5 - - - 18.0 40.5 53.0 3.5 2.0 2.0 0.5 2.5 - 2.5 23.0 15.5 2.0 - 1.0
Oatley (Woronora Parade)










6.0 11.0











17.0




Parramatta (Erts) - - - - 0.5 - - - - - - 2.0 5.0 - - - 17.5 42.5 33.0 1.5 2.0 1.0 - 2.5 - 1.5 23.0 13.0 1.0 - -
Parramatta North (Masons Drive) - - - - - - - - - - - 4.4 7.6 - - - 17.8 47.0 48.2 3.4 2.6 2.4 0.2 3.0 0.2 1.8 22.8 18.6 2.8 0.6 1.6
Peakhurst Golf Club - - - - - - - 1.0 1.0 - - 2.0 12.0 - - - 31.0 43.0 60.0 7.0 1.0 - 3.0 1.0 - 10.0 34.0 24.0 1.0 - 1.0
Penrith Lakes AWS - - - 0.2 - 0.2 - - - - - - 0.2 - - - 38.4 17.6 9.6 1.2 - 0.2 0.4 10.0 - 2.4 15.6 6.8 0.2 - -
Prospect Reservoir - - - - - - - - - - - 0.7 3.0 - - - 23.0 44.6 30.8 2.8 0.3 0.8 - 5.0 - 1.2 30.7 10.7 0.2 0.4 0.6
Randwick (Randwick St) - - - - - - - 1.6 3.6 - 0.8 28.8 12.6 - - - 37.0 25.6 25.6 6.6 15.2 0.8 5.2 5.0 - 16.6 16.6 22.0 4.6 10.2 2.2
Richmond RAAF - - - - - - - - - - - - 2.0 - - - 23.8 11.4 12.6 2.2 0.2 2.8 0.2 0.6 - 2.8 38.0 10.6 0.6 - -
Riverview Observatory - - - - - - - - 0.2 »» »» 14.4 21.6 - - - »» 70.8 57.6 6.6 4.0 8.8 0.8 »» 3.0 5.0 10.6 14.6 1.2 »» 5.6
Rose Bay (Royal Sydney Golf Club) - - - - - - - 0.3 2.6 - 0.2



















Rossmore (South Creek) - - - - - - - - - - - - 4.0 - - - 23.0 64.0 21.0 1.0 - - - 2.0 - - 31.0 1.0 - - -
Sackville - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Sans Souci (Public School) - - - - - - - 2.0 - - - 11.0 19.0 - - - 37.0 33.0 42.0 9.0 3.0 5.0 6.0 5.0 - 23.0 35.0 21.0 - 1.0 1.0
Seven Hills (Radio FM 103.2) - - - - 0.5 - - - - - - 0.5 4.5 - - - 21.5 33.5 35.0 2.5 0.5 1.5 - 3.5 - 4.5 21.5 15.5 1.0 0.5 0.5
Seven Hills (Collins St)










1.4 6.4


21.2 »» 77.8 4.0 1.4 4.0
5.6
5.0 21.4 20.8 3.0

South Creek (Elizabeth Drive)











0.5


12.0 22.0 10.0 0.5


2.5
2.0 9.5 1.5


Springwood (Valley Heights) - 0.6 - - - - - - - - - 0.2 0.8 - - - 41.2 19.6 7.2 2.2 0.4 1.2 2.0 15.4 - 2.4 22.2 7.8 0.2 - -
St Ives (Richmond Avenue)










6.0 17.0


»» 66.3 60.4 7.0 8.4 20.0
3.6 1.2 3.0 50.4 12.2 1.4 3.0 3.4
Strathfield Golf Club - - - - - - - 1.0 - - - 7.0 12.0 1.0 - - 23.0 39.0 76.0 8.0 4.0 2.0 1.0 2.0 - 5.0 38.0 21.0 3.0 1.0 -
Sydney (Observatory Hill) - - - - - - - - - - - 21.4 19.4 0.2 - - 28.6 21.8 38.4 8.2 10.8 10.2 3.2 3.8 - 12.6 13.2 15.2 2.0 3.2 3.0
Sydney Airport AMO - - - - - 0.2 - 1.4 0.2 - 0.8 29.0 18.6 - - - 35.2 35.6 35.0 9.6 12.8 3.4 6.6 3.8 0.2 18.0 29.0 13.0 1.8 2.6 1.0
Sydney Botanic Gardens - - - - - - - - - - - 23.2 18.0 - - - 29.0 20.0 37.0 9.8 12.2 10.8 5.0 5.2 - 13.4 14.6 16.0 - - -
Terrey Hills AWS - - - - - - - - - 0.2 - 5.0 27.0 - - - 31.8 25.4 56.0 7.0 6.8 17.8 3.0 0.8 0.2 2.6 23.6 22.2 1.6 2.4 2.2
Toongabbie Bowling Club - - - - - - - - - - - 1.0 7.0 - - - 19.0 37.5 43.0 2.0 0.5 1.5 - 6.0 - 3.5 21.5 13.0 1.5 0.5 1.5
Toongabbie Ck (Redbank Road (Toongabbee - - - - - 0.5 - - - - - 2.5 6.5 - - - 19.5 44.5 57.0 3.0 1.5 1.5 - 2.5 - 1.0 25.5 15.0 1.5 0.5 0.5
Turramurra (Kissing Point Road)










7.4 16.0


26.0 41.0 92.0 6.0 4.0 13.6 1.6 0.8






Webbs Ck-Wisemans Ferry (Hawkesbury Rive - - - - - - - - - - - - 4.2 0.2 - - 14.6 7.8 41.4 1.2 1.2 9.6 1.0 17.4 - - 22.4 10.4 2.0 0.2 0.2
West Pennant Hills (Cumberland S F Alert - - - - - - - - - - - 5.5 13.5 0.5 - - 19.5 40.5 66.5 3.0 1.0 5.5 0.5 7.0 - 1.0 16.0 18.5 1.0 0.5 3.0
West Pennant Hills (Cumberland State For - - - - - - - - - - - 6.4 13.8 - - - 30.8 37.0 72.2 4.2 1.6 5.6 1.0 6.3 0.8 0.4 18.4



Willmot (Resolution Ave) - - 4.0 - - - - - - - - - 1.0 - - - 37.0 14.0 16.0 1.0 - 1.0 - 2.0 - 21.0 20.0 3.0 1.0 - 1.0
Windsor SWC (Hawkesbury River) - - - - - - - - - - - - 3.0 - - - 18.0 13.0 16.0 1.0 - 3.0 - 2.0 - 13.0 38.0 8.0 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.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 10 am on Monday 1 September 2014. 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
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