Sydney in January 2013: An extreme month for Sydney

  • Sydney City sets new record daytime temperature
  • Ex-TC Oswald delivers heavy rain

Rainfall

Sydney Observatory Hill recorded 137.8 mm of rain during January, well above the historical average of 101.5 mm. The rain fell over eight rain days, below average for Sydney (average is 12). Four days recording at least 1 mm, less than half the historical average of nine. The majority of the rain (95.2 mm) fell in the 24 hours to 9am on the 29th as ex-TC Oswald moved south along the NSW coast (see Special Climate Statement 44). As a consequence of ex-TC Oswald, large areas of Sydney recorded rainfall in excess of 100 mm on the 29th, with 161 mm falling at Castle Cove, 136 mm at Springwood and 128 mm at Campbelltown. For a number of stations in western Sydney this was the wettest day in over a decade.

Temperature

Sydney Observatory Hill recorded an average maximum temperature of 27.6 °C during January, 1.8 °C above the historical average, with warmer than average temperatures recorded across the city. On the 8th, Sydney Observatory Hill recorded 42.3 °C its fifth highest temperature on record and then, on the 18th, set a new record maximum temperature of 45.8 °C surpassing the previous record set on 14 January 1939 by 0.5 °C. The extreme heat was the result of a heatwave that affected much of Australia over a prolonged period (see Special Climate Statement 43). The affect of this heatwave was pronounced in western Sydney with Richmond RAAF recording 10 days over 35 °C (average is five) and three days over 40 °C with a maximum temperature of 46.4 °C on the 18th.

Nights were also warm during January, with Sydney Observatory Hill recording an average minimum temperature of 20.5 °C, 1.8 °C above the historical average. There were 24 nights over 20 °C (average eight to nine nights). Conversely only four nights were below the January average of 18.7 °C, with the coldest night reaching 16.8 °C on the 15th.

The mean daily temperature at Sydney Observatory Hill was 24.5 °C, 2.2 °C above the historical average, with temperatures above average throughout the city.

Other phenomena

The prevailing wind direction at Sydney Airport was north-easterly, with 52% of 3pm winds between E-NNE, while 32% of 3pm winds were ESE-S, normal for January. There were fourteen strong wind days at the airport, with the maximum wind gust reaching 87 km/h on the 18th associated with a strong southerly change.

Sydney Airport recorded an average of 7.1 hours of bright sunshine during January, below the historical average of 7.5 hours. There was one thunderstorm reported at the airport.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in January 2013
Hottest day

46.5 °C at Penrith Lakes AWS on the 18th

Warmest days on average 32.1 °C at Penrith Lakes AWS
32.1 °C at Richmond RAAF
Coolest days on average 27.5 °C at Terrey Hills AWS
Coldest day 21.0 °C at Terrey Hills AWS on the 27th
Coldest night 11.0 °C at Camden Airport AWS on the 15th
Coolest nights on average 17.4 °C at Springwood (Valley Heights)
Warmest nights on average 20.5 °C at Sydney (Observatory Hill)
Warmest night 24.0 °C at Bankstown Airport AWS on the 26th
Warmest on average overall 25.7 °C at Penrith Lakes AWS
Coolest on average overall 23.2 °C at Terrey Hills AWS
Wettest overall 224.0 mm at Castle Cove (Rosebridge Ave)
Wettest day 161.0 mm at Castle Cove (Rosebridge Ave) on the 29th
Highest wind gust 104 km/h at Terrey Hills AWS on the 18th

Record highest January daily rainfall
Highest daily rainfall
in January 2013 (mm)
Previous wettest
for January
Years of
record
Camden Airport AWS 125.2 on the 29th 88.9 on the 28th in 1973 39
Avalon Beach (Avalon (Palmgrove Rd)) 118.0 on the 29th 74.9 on the 14th in 1968 35
Campbelltown (Kentlyn (Georges River Roa 117.0 on the 29th 93.2 on the 28th in 1973 34
Audley (Royal National Park) 139.0 on the 29th 117.0 on the 31st in 2001 31
Chatswood Bowling Club 132.0 on the 29th 102.9 on the 23rd in 1955 23
Belrose (Evelyn Place) 157.8 on the 29th 77.4 on the 22nd in 1999 22



Record highest total January rainfall
Total rainfall
for January 2013 (mm)
Previous wettest
for January
Years of
record
Average for
January
Audley (Royal National Park) 185.0 179.8 in 1986 31 83.8
Belrose (Evelyn Place) 222.8 208.0 in 1999 22 106.8

 



Record highest January temperature
Highest temperature
in January 2013 (°C)
Previous warmest
for January
Years of
record
Average for
January
Sydney (Observatory Hill) 45.8 on the 18th 45.3 on the 14th in 1939 155 25.9
Sydney Airport AMO 46.4 on the 18th 45.2 on the 1st in 2006 74 26.5
Prospect Reservoir 45.1 on the 18th 44.7 on the 15th in 2001 48 28.3
Bankstown Airport AWS 46.1 on the 18th 44.8 on the 18th in 2003 45 28.2
Parramatta North (Masons Drive) 45.5 on the 18th 44.8 on the 1st in 2006 45 28.3
Camden Airport AWS 46.4 on the 18th 45.0 on the 30th in 2003 37 29.4
Riverview Observatory 45.4 on the 18th 44.0 on the 1st in 2006 29 26.6



Summary statistics for January 2013
Maximum temperatures
for January
(°C)
Minimum temperatures
for January
(°C)
Rainfall
for January
(millimetres)
Mean for
January
2013
Diff
from
average
Highest for
January
2013
Mean for
January
2013
Diff
from
average
Lowest for
January
2013
Total for
January
2013
Average
for
January
Rank of
January
2013
Fraction of
January
average
Badgerys Creek AWS 31.2   45.8 18th 18.0   12.9 15th 168.2
Bankstown Airport AWS 29.7 +1.5 46.1 18th 19.2 +1.1 13.6 15th 129.4 91.7 high 141%
Camden Airport AWS 31.6 +2.2 46.4 18th 17.8 +1.0 11.0 15th 179.4 77.9 v high 230%
Campbelltown (Mount Annan) 30.5   45.0 18th 17.6   11.2 15th 203.0
Canterbury Racecourse AWS 28.2   44.6 18th 18.6   13.2 15th 164.2
Holsworthy Aerodrome AWS 29.7   45.8 18th 18.6   12.8 15th 143.6
Holsworthy Control Range 30.0   45.7 18th 18.0   12.4 15th 149.4
Horsley Park Equestrian Centre AWS 30.6   44.9 18th 18.2   13.5 15th 141.6
Parramatta North (Masons Drive) 29.7 +1.4 45.5 18th 18.3 +0.8 12.2 15th 115.4 102.3 average 113%
Penrith Lakes AWS 32.1   46.5 18th 19.3   15.6 15th 149.2
Prospect Reservoir 30.0 +1.7 45.1 18th 18.5 +0.9 13.0 15th 134.9 94.4 high 143%
Richmond RAAF 32.1   46.4 18th 18.4   14.4 4th 155.0
Springwood (Valley Heights) 29.5   44.1 18th 17.4   13.3 15th 198.5 125.6 high 158%
Sydney (Observatory Hill) 27.6 +1.7 45.8 18th 20.5 +1.8 16.8 15th 137.8 101.7 high 135%
Sydney Airport AMO 28.3 +1.8 46.4 18th 20.4 +1.6 17.3 14th 138.0 94.5 high 146%
Terrey Hills AWS 27.5   43.9 18th 18.9   14.9 14th 217.0

Daily rainfall
Hunter (61)12345678910111213141516171819202122232425262728293031
Webbs Ck-Wisemans Ferry (Hawkesbury Rive - - - - - - - - - - - - - - - 7.6 1.0 0.2 0.8 0.2 - - - 14.8 91.2
Central Tablelands (South) (63)12345678910111213141516171819202122232425262728293031
North Richmond (Hospital)




















4.0 15.0 80.0 - - 1.0 - - -
Springwood (Valley Heights) - - 1.2 - - - - - - - - - - 12.4 - - - - 0.4 1.0 0.4 - 7.4 - - - 32.3 4.4 136 3.0 -
Metropolitan (East) (66)12345678910111213141516171819202122232425262728293031
Abbotsford (Blackwall Point Rd)












6.0











24.5 14.5 108

Auburn (Rosnay Golf Club) - - - - - - - - - - - - - 10.0 - - - - - - - - - - - - 8.0 9.0 91.0 - -
Audley (Royal National Park) - - - - - - - - - - - - - 10.0 - - - - - - - 1.0 3.0 - - - 21.0 11.0 139 - -
Avalon (Wollstonecraft Ave) - - - - - - - - - - - - - 16.0 - - - - - 4.0 1.0 - - - - - 24.0 37.0 116 - -
Avalon Beach (Avalon (Palmgrove Rd))


















4.2 1.8





35.0 118 0.8
Bankstown Airport AWS - - - - - - - - - - - - - 6.6 - - - - 0.2 1.0 - - 0.4 - - - 9.4 9.0 102 0.4 -
Belrose (Evelyn Place) - - 0.2 - - - - - - - - - - 12.2 - - - - 1.8 2.0 1.2 - 0.2 0.4 - - 20.6 26.0 158 0.4
Campbelltown (Ingleburn (Long Point)) - - - - - - - - - - - - - 14.0 - - - - - - - - 1.0 - - - 26.0 10.0 128 - -
Canterbury Racecourse AWS - - - - - - - - - - - - - 4.0 0.4 - - - 3.6 0.2 0.4 - - 0.2 - - 30.0 15.0 110 0.4 -
Castle Cove (Rosebridge Ave)












20.0



1.5 2.0 1.0
0.5


18.0 20.0 161

Chatswood Bowling Club - - - - - - - - - - - - - 16.0 - - - - 1.0 1.0 - - - 1.0 - - 17.0 17.0 132 1.0 -
Collaroy (Long Reef Golf Club)












14.2



4.2 3.0 0.4




31.2 29.4 117

Concord Golf Club












5.6








12.0

12.0



Cronulla South Bowling Club












17.2




»» 3.0
11.0


»» 31.2 109

Guildford (Woodville Golf Club) - - - - - - - - - - - - - 8.0 - - - - - - - - 1.0 - - - 11.0 8.0 89.0 - -
Holsworthy Aerodrome AWS - - - - - - - - - - - - - 6.0 0.6 - - - - 0.2 - 0.2 0.6 0.2 - - 13.6 8.8 113 0.4 -
Holsworthy Control Range - - - - - - - - - - - - - 4.8 - - - - - 0.4 - - 1.0 - - - 28.2 7.2 108 0.2 -
Lidcombe (Carnarvon Golf Club) - - - - - - - - - - - - - 7.0 - - - - - 1.0 - - - - - - 9.0 11.0 91.0 - -
Liverpool-Scrivener St (Georges River) - - - - - - - - - - - - - 4.0 - - - - 1.0 1.0 - - - 1.0 - - 25.0 7.0 101 - -
Lucas Heights (ANSTO)












12.8 0.4











7.7 130 0.4 1.6
Macquarie Park (Willandra Village) - - - - - - - - - - - - - - - - - - 3.4 - - - - - - - »» 30.4 106 0.2
Marrickville Golf Club - - - - - - - - - - - - - 4.0 - - - - 1.0 - 1.0 - - - - - 15.0 14.0 98.0 - -
Milperra Bridge (Georges River)









- - - 4.0 - - - - - 1.0 - - - - - - 6.0 7.0 100 - -
Mona Vale Golf Club - - - - - - - - - - - - 0.2 19.4 - - - - 1.8 2.4 1.2 - 0.2 - 0.2 - 28.4 32.6 136 - -
Parramatta (Erts) - - - - - - - - - - - - - 5.0 0.5 - - - - 3.5 - - 1.0 - - - 6.5 9.5 79.5 - -
Parramatta North (Masons Drive) - - - - - - - - - - - - - 12.0 - - - - 0.4 2.0 0.2 - 0.8 - - - 8.0 11.2 80.8 - -
Peakhurst Golf Club - - - - - - - - - - - - - 9.0 - - - - - 1.0 1.0 - - - - - 14.0 10.0 98.0 - -
Randwick Bowling Club












6.2



2.6
2.0




32.0 21.4 110 0.6
Riverview Observatory


- - - - - - - - - »» »» 10.6 - - - 0.6 0.4 0.2 »» 0.6 - - - »» 31.6 106 0.8 -
Rose Bay (Royal Sydney Golf Club)



















0.4




34.0
118

Sans Souci (Public School) - - - - - - - - - - - - - 10.0 1.0 - - - - 1.0 1.0 - 2.0 - - - 19.0 13.0 84.0 - -
St Ives (Richmond Avenue)











0.2 15.0 0.2


2.6 2.0 0.4
1.0 0.6

9.6 17.2 109

Strathfield Golf Club - - - 1.0 - - - - 1.0 - - 2.0 - 7.0 1.0 - 1.0 1.0 2.0 - 1.0 1.0 - 1.0 1.0 - 15.0 12.0 93.0 - -
Sydney (Observatory Hill) - - - - - - - - - - - - - 8.6 0.2 - - - - 0.2 0.2 - - - - - 16.8 15.8 95.2 0.8 -
Sydney Airport AMO - - - - - - - - - - - - - 9.2 0.2 - - - 1.2 0.2 1.0 - 0.2 - 0.2 - 13.0 15.0 97.2 0.6 -
Terrey Hills AWS - - - - - -
- - - - - - 26.4


- 5.8 2.8 1.0 - 0.2 0.4 - 0.2 21.0 23.4 136 0.2 -
Turramurra (Kissing Point Road)









1.0
0.2 25.2 0.8


0.6 2.0 0.6
1.4 0.4

17.0 16.0 129 1.6 -
Metropolitan (West) (67)12345678910111213141516171819202122232425262728293031
Abbotsbury (Fairfield City Farm) - - - - - - - - - - - - - 7.0 - - - - - 1.0 - - 1.0 - - - 13.0 9.0 118 - -
Badgerys Creek AWS - - - - - - - - - - - - - 5.2 - - - - 0.8 0.8 1.4 - 1.4 - - - 35.4 6.8 116 - 0.4
Baulkham Hills (Swimming Pool ) - - - - - - - - - - - - 0.5 13.5 - - - - - 0.5 - 0.5 - - - - 10.0 11.0 17.0 - -
Baulkham Hills Eucalyptus Ct - - - - - - - - - - - - - 15.5 - - - - - 1.0 - - - - - - 11.5 10.5 75.5 - -
Berowra (Goodwyn Road) - - - - - - - - - - - - - 15.2 - - - - - 2.0 0.8 - - - - - 9.8 19.0 147

Blacktown (Dog Pound) - - - - - - - - - - - - - 7.5 - - - - - 2.5 - - 0.5 - - - 11.0 5.5 85.5 - -
Box Hill (Hynds Road) - - - - - - - - - - - - - 16.0 - - - - - 1.0 - - 1.0 - - - 6.0 8.0 83.0 - -
Castle Hill (Kathleen Ave) - - - - - - - - - - - - 2.8 16.8 0.4 - - - - 5.8 0.6 - 1.0 - - - 13.8 12.4 86.4 0.8
Glenorie (Old Northern Rd)












10.0




3.0





11.2 15.6 107

Greystanes (Cumberland Golf Club) - - - - - - - - - - - - - 7.5 - - - - - - - - - - - - 14.5 7.5 87.0 - -
Horsley Park Equestrian Centre AWS - - - - - - - - - - - - - 7.2 0.2 - - - - 1.2 - 0.2 1.0 - - - 9.4 7.8 114 0.2 -
Kelso Ck (Kelso Creek U/S Levee (Georges - - - - - - - - - - - - - 2.5 - - - - - 1.0 - - 0.5 - - - 8.5 9.0 93.5 - 0.5
Kings Langley (NSW Soccer Federation) - - - - - - - - - - - - 1.5 11.5 - - - - - - - - 0.5 - - - 10.5 8.5 76.5 0.5 -
Liverpool (Michael Wenden Centre) »» 23.6 - - - - - - - - - - »» 5.2 - »» »» »» 0.2 »» »» »» 4.0 - -

20.6


Lower Portland (Hawkesbury River) - - - - - - - - - - - - - 0.8 - - - - - - - - 0.2 0.2 - - - - 1.0 -
Maroota (Tobruk) - - - - - - - - - - - - - - - - - - - - - - - - - 1.0 8.0 17.2 124 - -
Merrylands West (Finlayson Creek) - - - - - - - - - - - - - 11.0 - - - - - - 0.5 - - - - - 15.5 8.0 89.0 - -
North Parramatta (Burnside Homes) - - - - - - - - - - - - - 12.0 - - - - - 2.0 0.5 - 0.5 - - - 7.0 11.5 77.5 0.5 -
North Rocks (Muirfield Golf Club) - - - - - - - - - - - - - 14.5 - - - - - 1.5 - - - - - - 7.0 11.5 77.5 - -
Northmead Bowling Club 0.5 - - - - - 1.0 - - - - - 1.0 14.0 0.5 - - - - 1.0 1.0 - - - 0.5 - 11.5 9.5 70.5 0.5 -
Penrith Lakes AWS - - - - - - - - - - - - 0.2 12.2 - - - - 0.2 0.4 0.2 0.2 0.4 - - - 27.2 5.0 102 1.2 0.2
Prospect Reservoir - - 0.1 - - - - - - - - - - 11.2 - - - - - 0.4 0.3 - 0.4 - - - 11.8 10.0 101 0.2 -
Richmond RAAF - - - 0.4 - - - - - - - - - 9.6 0.2 - - - - 2.0 0.2 - - 0.2 - - 24.6 5.8 112 0.2 -
Sackville - - - - - - - - - - - - - 15.0 0.2 - - - - 2.6 0.2 - - - - - 11.2 11.2 97.0 0.2 -
Seven Hills (Radio FM 103.2) - - - - - - - - - - - - - 7.0 0.5 - - - - - - - 0.5 - - - 9.0 9.0 80.0 0.5 -
Seven Hills (Collins St)









»» »» »» »» »» »» 15.8

1.8





10.4 9.6 85.0

South Creek (Elizabeth Drive)












3.0




0.5 0.5
0.5


23.5 2.0 50.5

St Clair (Juba Close) - - - - - - - - - - - - - - - - - - - - - - - 3.0 - - 23.0 4.0 13.0 - -
Toongabbie Bowling Club - - - - - - - - - - - - - 10.5 2.0 - - - - 0.5 - - - - - - 14.0 10.0 81.5 - -
Toongabbie Ck (Redbank Road (Toongabbee - - - - - - - - - - - - - 8.5 0.5 - - - - 2.5 - 0.5 0.5 - - - 12.5 9.5 79.5 0.5 -
West Pennant Hills (Cumberland S F Alert - - - - - - - - - - - - - 15.5 - 0.5 - - - 1.5 0.5 - 0.5 - - - 7.0 13.0 87.0 - -
Willmot (Resolution Ave) - - - - - - - - - - - - - 12.0 - - - - - - - - 1.0 - - - 17.0 4.0 19.0

Windsor SWC (Hawkesbury River) - - - - - - - - - - - - - - - - - - - - - - - - - -




Illawarra (68)12345678910111213141516171819202122232425262728293031
Camden Airport AWS - - - - - - - - - - - - - 11.0 - - - - - - 2.0 - 1.0 - - - 32.4 7.8 125 - -
Campbelltown (Kentlyn (Georges River Roa - - - - - - - - - - - - - 13.0 - - - - - - - - - - - - 22.0 11.0 117 - 1.0
Campbelltown (Mount Annan)
- - 0.2





- - - 9.0 0.4 - - - - - 0.8 - 4.0 - - - 57.2 12.4 119 - 0.2
Rossmore (South Creek) - - - - - - - - - - - - - 7.0 - - - - - - - - 5.0 - - - 43.0 6.0 110 - -

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 1 pm on Friday 1 February 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 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.

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