Sydney in March 2011: Warm, wet start to Autumn

  • Wettest March in ten years.
  • Wettest March day since 1984.
  • 6th warmest March on record for mean temperatures.

Rainfall

Sydney Observatory Hill recorded a total rainfall of 191.6mm during March, above the historical average of 128.9mm. This is the wettest March since 2000 (248.4mm) and the wettest single month since February 2010. The majority of the rain fell in a single event between the 20th and 22nd, following the driest start to a year since 1985, with further light falls associated with easterly flow between the 27th and 29th. In total, there were 18 rain days during the month, above the historical average of 13 rain days, of which five exceeded 10mm.

On the 20th, a complex low pressure system developed in a trough over the Gippsland region of Victoria and intensified over NSW, bringing very heavy rainfall to the Sydney region. This caused daily totals of 99.4mm at Sydney Observatory Hill, the wettest March day since 1984, with rainfall as high as 178mm at St Ives and 175mm in Turramurra in northern Sydney, including record breaking totals at Avalon, Collaroy and Mona Vale on the northern beaches. This system was associated with significant flash flooding in the Sydney Metropolitan region on the 20th, with road closures around the city including in the CBD and approximately 500 calls for assistance to the SES, particularly in the northern suburbs. Further rain followed on the 21st and 22nd, with daily falls of over 20mm at Sydney Observatory Hill.

Some sites had their highest total March rainfall on record.

Temperature

Maximum temperatures at Sydney Observatory Hill averaged 26.0 °C during March, 1.3 °C above the historical average of 24.7 °C. This is the fourth consecutive warm month in Sydney, associated with the above average sea surface temperatures off the NSW coast. Temperatures were warmest on the first of the month when maximums reached 33.6 °C at Observatory Hill and 36.6 °C at Badgerys Creek in the west, with coolest conditions on the 28th. Four days above 30 °C were recorded in the city during March, well above the historical average of less than two days, with no days having maximum temperatures below 20 °C compared to the historical average of one day.

Minimum temperatures were also above average during March, averaging 19.2 °C compared to the historical average of 17.5 °C. This is the 7th warmest March on record for minimum temperatures, although slightly cooler than March 2010 (19.3 °C). Eleven nights exceeded 20 °C during the month, above the historical average of four warm nights, including six consecutive nights between the 9th and 14th. Mean temperatures were consequently well above average at 22.6 °C, 1.5 °C above the historical average of 21.1 °C. This was the equal 7th warmest March on record, and the warmest since 22.7 °C in March 2007.

Wind

Winds were predominantly E to SE during March, with 63% of 3pm winds from this direction, slightly above the normal frequency for March. Two strong wind days were reported at Sydney Airport, below the historical average of 4-5 strong wind days, with a maximum wind gust at the Airport of 67km/hr on the 14th. The strongest wind gust anywhere in the Metropolitan region during the month was 89km/hr at Camden Airport on the 30th associated with a severe thunderstorm.

Other phenomena

Sydney Airport recorded an average of 5.2 sunshine hours during March, below the historical average of 6.9 hours and the fourth lowest on record (since 1978). One thunderstorm was observed at Sydney Airport, below the historical average of 2 storms, with five storms reported throughout the Metropolitan region including a severe storm on the 30th. Humidity was close to average in Sydney during March.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in March 2011
Hottest day 36.6 °C at Badgerys Creek AWS on the 1st
Warmest days on average 27.7 °C at Badgerys Creek AWS
27.7 °C at Liverpool (Michael Wenden Centre)
Coolest days on average 24.7 °C at Springwood (Valley Heights)
Coldest day 18.6 °C at Terrey Hills AWS on the 26th
Coldest night 10.9 °C at Camden Airport AWS on the 7th
10.9 °C at Camden Airport AWS on the 8th
Coolest nights on average 15.6 °C at Campbelltown (Mount Annan)
Warmest nights on average 19.2 °C at Sydney (Observatory Hill)
Warmest night 23.0 °C at Sydney Airport AMO on the 10th
Warmest on average overall 22.7 °C at Sydney Airport AMO
Coolest on average overall 20.2 °C at Springwood (Valley Heights)
Wettest overall 302.2 mm at Terrey Hills AWS
Wettest day 178.6 mm at St Ives (Richmond Avenue) on the 20th
Highest wind gust 89 km/h at Camden Airport AWS on the 30th

Record highest total March rainfall
Total rainfall
for March 2011 (mm)
Previous wettest
for March
Years of
record
Average for
March
Mona Vale Golf Club 290.2 280.4 in 1976 40 110.6



Summary statistics for March 2011
Maximum temperatures
for March
(°C)
Minimum temperatures
for March
(°C)
Rainfall
for March
(millimetres)
Mean for
March
2011
Diff
from
average
Highest for
March
2011
Mean for
March
2011
Diff
from
average
Lowest for
March
2011
Total for
March
2011
Average
for
March
Rank of
March
2011
Fraction of
March
average
Badgerys Creek AWS 27.7   36.6 1st 15.8   12.0 7th 83.0
Bankstown Airport AWS 26.9 +0.7 34.0 1st 17.4 +1.3 13.4 7th 100.6 97.7 average 103%
Camden Airport AWS 27.3 +0.5 34.8 1st 15.7 +1.0 10.9 7th 116.8 85.5 high 137%
Campbelltown (Mount Annan) 27.4   35.1 1st 15.6   11.2 8th 93.8
Canterbury Racecourse AWS 26.5   33.9 1st 17.3   12.7 7th 133.2
Holsworthy Control Range 27.1   34.9 1st 16.3   11.6 8th
Horsley Park Equestrian Centre AWS 27.0   33.6 13th 16.5   12.8 6th 49.6
Liverpool (Michael Wenden Centre) 27.7   35.2 1st     13.6 25th 92.1
Parramatta North (Masons Drive) 26.8 +0.5 33.5 1st 16.7 +0.9 12.0 7th 133.0 107.3 high 124%
Penrith Lakes AWS 27.4   33.4 13th 17.2   13.8 7th 121.2
Prospect Reservoir 27.0 +0.7 33.5 13th 17.0 +0.9 12.5 6th 83.4 95.6 average 87%
Richmond RAAF 27.1   32.9 13th 16.3   12.0 8th 113.8
Riverview Observatory 26.2 +1.0 34.7 1st 17.7 +1.6 14.3 7th 176.0 125.9 high 140%
Springwood (Valley Heights) 24.7   31.0 22nd 15.7   12.2 6th 157.2 125.6 high 125%
Sydney (Observatory Hill) 26.0 +1.3 33.6 1st 19.2 +1.7 15.9 28th 191.6 129.3 high 148%
Sydney Airport AMO 26.3 +1.1 34.4 1st 19.2 +1.7 15.7 28th 172.8 115.2 high 150%
Sydney Olympic Park (Sydney Olympic Pk A 26.7   34.3 1st 18.6   15.0 7th 123.2
Terrey Hills AWS 24.9   31.3 1st 17.2   14.2 27th 302.2

Daily rainfall
Hunter (61)12345678910111213141516171819202122232425262728293031
Webbs Ck-Wisemans Ferry (Hawkesbury Rive 11.5 - - - - - 0.5 - - - - 6.5 0.5 1.5 - 0.2 4.0 - 0.5 9.0 13.5 19.0 - - - - - 1.5 - - 2.5
Central Tablelands (South) (63)12345678910111213141516171819202122232425262728293031
Sackville Ferry (Hawkesbury River) 8.6 - - - 2.6 - - - - - 0.2 7.2 - - 0.2 0.2 3.4 2.0 0.4 24.0 21.4 10.6 - - - - - - - - 2.4
Springwood (Valley Heights) 8.2 2.0 0.2 - 0.6 0.6 - - - - - 54.4 2.0 2.6 1.4 1.4 5.4 0.4 1.8 25.8 36.0 10.6 - - - - - 2.8 0.6 - 0.4
Valley Heights (Sun Valley Rd) 8.0 2.0 0.2 -
0.6
- - - 0.2 72.0 2.4 3.4 1.2 1.2 5.0
3.4 27.0 37.8 12.0 - - - - - 3.0 0.6 - 1.0
Metropolitan (East) (66)12345678910111213141516171819202122232425262728293031
Abbotsford (Blackwall Point Rd) 1.0


2.5





16.4



7.9
25.0 65.0 24.5 32.0 5.0

4.0 1.0 4.4 2.5
2.2
Ashfield Bowling Club










22.0






74.1










Auburn (Rosnay Golf Club) - - - - - 1.0 - - - - - - - - - - 5.0 - 1.0 - - -








Audley (Royal National Park) 1.0 1.0 - - 4.0 3.0 - - - - 11.0 2.0 - - - 2.0 - 1.0 37.0 115 30.0 15.0 - - - 1.0 1.0 1.0 4.0 - -
Avalon (Wollstonecraft Ave) 1.0 - - - - - - - - - - - - - - - - - 66.0 139 43.0 14.0 - - - 1.0 6.0 - 7.0 - 7.0
Avalon Beach (Avalon (Palmgrove Rd)) 2.0 0.6

1.2 0.6







0.2
0.6
75.8 120 42.0 19.2




9.2

9.0
Bankstown Airport AWS 0.2 - 0.2 - - 0.4 - - - - - 0.2 - - - 0.6 3.8 - 2.2 54.4 13.8 11.4 8.8 - - 0.2 - 2.0 0.2 - 2.2
Belrose (Evelyn Place) 1.4 2.2








2.2

0.6
0.6 0.2 56.6 137 30.4 24.0



8.4 3.4 4.2
20.0
Campbelltown (Ingleburn (Long Point)) - - - - 1.0 - - - - - - - - - - - 3.0 - 5.0 72.0 19.0 12.0 1.0 - - - 2.0 - - - 4.0
Canterbury Racecourse AWS 0.2 - - - 0.6 0.2 - - - - - 1.6 - - 0.2 0.6 3.2 - 8.2 69.4 16.6 13.8 7.6 - - 1.8 - 2.8 3.4 - 3.0
Castle Cove (Rosebridge Ave) 1.0



0.5




11.0



1.0
52.0 104 24.0



1.0 4.5 5.0 2.0 1.0 1.0
Chatswood Bowling Club 1.0 - - - - - - - - - - 4.0 - - - - 2.0 - 17.0 69.0 20.0 35.0 - - - 2.0 2.0 5.0 3.0 - 2.0
Collaroy (Long Reef Golf Club) 1.0














0.8
79.4 115 42.2 11.8


»» »» 9.4 15.8
5.0
Concord Golf Club 0.4


1.0












14.2 60.2 24.0 21.4


1.4
2.6


Cronulla South Bowling Club









4.0



1.0
5.5 14.0 »» 153









Guildford (Woodville Golf Club) - - - - - 1.0 - - - - - - - - - - 9.0 - 3.0 28.0 10.0 12.0 2.0 - - - - 1.0 - - 12.0
Holsworthy Control Range 0.4 - 0.2 - - 0.2 - - - - - - - - - - 0.2 0.2


8.2 - - - - - 1.0 - - 8.2
Lidcombe (Carnarvon Golf Club) - 1.0 - - - - - - - - - - - - - - 11.0 - 3.0 39.0 13.0 12.0 5.0 - - - - - 1.0 - 4.0
Liverpool-Scrivener St (Georges River) - - - - - - - - - - - - - - - - 5.0 - 3.0 45.0 13.0 11.0 14.0 - - - - - - - 3.0
Lucas Heights (ANSTO) 0.6


2.0 2.0



1.8 118


1.2 0.3

80.0 37.8 11.2 2.7



3.2 0.5
0.1
Macquarie Park (Willandra Village) 3.0


1.4 0.4




2.4


0.4 1.8 0.2 30.8 59.6 19.8 23.6


0.8 0.8 4.6 1.4
6.4
Manley / Warringah (Allambie) 1.0 2.5 - - - - - - - - - 19.5 - - -
0.5 0.5 41.5 102 35.5 12.5 - - - 1.0 11.0 3.5 6.5 - 6.0
Manley / Warringah (Belrose) 1.0 1.5 0.5 - - - - - - - - 1.5 0.5 - - - 0.5 0.5 51.5 128 26.5 26.5 - - - 1.0 6.0 3.5 4.5 0.5 12.0
Marrickville Golf Club - - - - 2.0 - - - - - - 1.0 - - - 1.0 2.0 - 10.0 90.0 16.0 12.0 10.0 - - - 1.0 3.0 3.0 - 2.0
Milperra Bridge (Georges River) - - - - - - - - - - - - - - - - 4.0 - 2.0 60.0 17.0 11.0 5.0 - - - - 1.0 - - 3.0
Mona Vale Golf Club 1.2 - 0.2 - - - - - - - - - - - - - 1.0 - 71.4 106 46.6 16.6 - - - 1.8 5.0 1.0 20.2 0.2 19.0
Parramatta (Erts) 1.5 - - - - - - - - - - 1.0 - - - 0.5 2.0 0.5 3.0 42.0 18.0 11.0 - - - - - - 0.5 - 1.0
Parramatta North (Masons Drive) 2.0 - 0.2 - 0.2 3.0 - - - - - 9.6 1.2 - 1.2 0.4 2.4 - 14.0 53.0 18.8 18.4 1.2 - - 2.2 - 1.8 0.4 - 3.0
Peakhurst Golf Club 1.0 - - - - 2.0 - - - - - - - - - - 6.0 2.0 7.0 81.0 17.0 12.0 - - - 1.0 1.0 3.0 1.0 - 2.0
Randwick Bowling Club 0.6 0.6




0.6

0.4 0.2

1.6 0.6 4.4 0.4 14.8 113 34.2 26.6 4.0

1.0 10.2 7.8 12.4 - 3.0
Riverview Observatory 0.8 - - - - 0.2 - - - - - 4.6 - - 0.3 - 2.8 0.4 15.6 80.8 14.6 35.0 0.5 - - 2.4 1.6 6.4 3.4 - 6.6
Rose Bay (Royal Sydney Golf Club) 0.8 0.4















15.0 107 34.4 26.8 1.0

2.6 7.4 6.8 9.8
1.0
Sans Souci (Public School) 2.0 - - - - - - - - - - - - - - - - - 2.0 108 19.0 13.0 - - - - - 4.0 6.0 - 5.0
St Ives (Richmond Avenue) 1.4


0.2



0.8
3.0 0.6
0.6
2.2
30.0 179 19.2 28.2


2.0 3.0 3.0 4.8

Strathfield Golf Club 1.0 - 1.0 - - - - - - - 1.0 3.0 - - - 1.0 9.0 - 5.0 63.0 21.0 16.0 3.0 - - - - 1.0 1.0 - 3.0
Sydney (Observatory Hill) 0.6 - - - 0.2 0.2 - 0.2 - - - 1.0 0.2 - 0.8 - 5.6 - 10.4 99.4 20.8 27.8 0.8 0.2 - - 5.0 5.8 10.8 - 1.8
Sydney Airport AMO 0.4 0.2 - - 0.6 0.2 - - - - - 1.2 - - 0.2 0.4 1.2 0.6 13.8 100 16.4 16.4 6.6 - - - 1.6 5.4 6.0 0.2 1.4
Sydney Olympic Park (Sydney Olympic Pk A 0.6 - - - - 0.2 - - - - - 16.8 - - 0.2 0.4 7.2 - 3.2 60.8 11.8 15.0 1.6 - - - - 1.6 2.0 - 1.8
Terrey Hills AWS 1.0 5.0 0.4 - 3.4 0.6 - - - - - 16.6 - - - - 1.8 0.2 60.6 126 40.0 26.0 - - - 0.6 8.8 2.4 5.2 - 4.0
Turramurra (Kissing Point Road) 1.8


0.2 1.4




2.6 0.6
0.8
2.0
37.0 175 23.0 25.0 0.2

1.6 1.4 3.4 2.0
11.0
West Pymble (Wyuna Road)










5.8
0.8

1.2













Metropolitan (West) (67)12345678910111213141516171819202122232425262728293031
Abbotsbury (Fairfield City Farm) 1.0 - - - - - - - - - - - - - - - 10.0 - 4.0 13.0 17.0 12.0 1.0 - - - - - - - 1.0
Badgerys Creek AWS 0.6 - - - 0.2 0.2 - - - - - 0.8 - - 0.2 0.8 16.6 0.2 3.0 25.8 17.2 13.2 0.2 0.2 - - - 1.2 - - 2.6
Baulkham Hills (Swimming Pool ) 4.0 - - - - 0.5 - - - - - - 1.0 - 0.5 - 5.5 - 13.5 66.0 12.5 23.5 - - - - - 0.5 - - 3.0
Baulkham Hills Eucalyptus Ct 2.5 - - - - 0.5 - - - - - - - - 1.0 - 2.0 - 8.5 49.0 11.5 21.5 - - - - - 0.5 - - 4.0
Berowra (Goodwyn Road)

















29.2 72.8 38.6 11.6




»» 5.4
1.4
Blacktown (Dog Pound) 2.5 - - - 0.5 0.5 - - - - - 7.0 - 4.0 0.5 0.5 8.0 - 2.0 28.5 11.5 11.5 1.0 - - - - 1.0 - - 1.5
Box Hill (Hynds Road) 3.0 - - - - - - - - - - - - - 3.0 - 4.0 - 7.0 82.0 11.0 21.0 - - - - - - 1.0 - 4.0
Castle Hill (Kathleen Ave) 2.2 0.3


0.5




0.2

1.4 0.3 2.6 0.1 11.8 73.1 12.6 19.4




1.2

3.6
Glenorie (Old Northern Rd) 8.0









1.0 6.4
4.0
2.0
3.0 25.4 23.0 10.0





1.2
1.0
Greystanes (Cumberland Golf Club) 2.0 - - - - - - - - - - - - - - 0.5 3.5 - 0.5 32.0 10.5 10.0 1.0 - - - - - 2.0 - -
Hawkesbury River (Sackville Downstream) 8.5 - - - - - - - - - - 7.0 - - -
3.5 2.0 - 15.5 17.0 10.5 - - - - - - - - 2.5
Horsley Park Equestrian Centre AWS 1.0 0.2 - 0.2 - 0.6 - - - - - 0.2 1.8 0.2 0.2 0.2
0.2

20.6 13.6 7.8 0.2 - - - 0.6 0.2 - 1.8
Kelso Ck (Kelso Creek U/S Levee (Georges 0.5 - - - - - - - - - - - - - - 0.5 4.0 - 3.5 53.0 20.5 10.0 1.0 - - 0.5 - 1.0 - - 1.0
Kings Langley (NSW Soccer Federation) 5.0 0.5 - - - - - - - - - - 5.0 - 1.0 - 3.0 0.5 8.5 64.0 9.5 17.5 - - 0.5 - - 0.5 0.5 - 1.5
Kings Langley (Solander Rd) 3.0 - - - - 0.4 - - - - - - 0.4 - 0.8 0.4 8.2 - 4.2 41.4 10.8 13.6 - - - 0.2 - 1.6 - - 5.0
Liverpool (Michael Wenden Centre) - - - - - - - - - - - - - - »» »» 5.6 »» 3.6 42.8 17.3 16.6 1.8 - - 0.3 - - -
3.1
Lower Portland (Hawkesbury River) 7.6 - - - - - - - - - - 6.2 0.2 - - - 4.6 2.2 1.8 18.8 33.8 7.4 0.2 - - - - - 0.2 - 11.8
Maroota (Tobruk) 0.6 0.2 0.2 - - - - 0.2 - - - 6.6 0.2 - 0.4 0.2 7.2 0.2 1.2 38.0 24.8 15.0 - - - - 0.8 0.6 0.2 - 5.4
Merrylands (Welsford Street)


















43.8 21.2 10.8




1.6 1.6
3.4
Merrylands West (Finlayson Creek) 0.5 - - - - 0.5 - - - - - - - - - 1.0 4.0 - 0.5 45.0 24.5 16.5 5.0 - - - - 1.0 - - 2.5
North Parramatta (Burnside Homes) 2.0 - - - - 2.5 - - - - - 9.0 1.0 - 0.5 0.5 2.0 - 13.0 50.5 17.5 17.5 1.0 - - - - 1.5 - 0.5 2.0
North Rocks (Muirfield Golf Club) 2.0 - - - - - - - - - - 8.5 - - 0.5 - 3.0 - 10.0 61.5 14.5 22.0 2.0 - - - - 2.0 - - 6.5
Northmead Bowling Club 2.0 - - - - 0.5 1.0 - - - - - 1.5 2.0 1.0 0.5 2.0 - 6.5 41.5 12.0 15.5 4.0 - - - - 1.5 0.5 - 2.5
Parramatta (Baulkham Hills West (Sierra 2.5 - - - - - - - - - - - 0.5 - 0.5 0.5 4.0 0.5 4.5 41.0 11.5 14.5 - - - - - 1.0 - - 5.0
Penrith Lakes AWS 4.6 - - 0.2 - - - - - - - 46.4 0.2 - 0.6 0.4 1.0 0.2 - 22.0 15.6 12.8 0.2 - - - - 2.0 -
15.0
Prospect Reservoir 1.2 - - - 0.6 0.4 - - - - - 0.8 - 0.7 0.6 0.6 5.8 - 1.1 31.7 11.5 22.0 1.8 - - 0.2 - 1.1 1.5 - 1.8
Richmond RAAF 6.4 - - - - - - - - - - 4.2 0.2 - 0.8 - 1.8 3.2 - 45.2 12.0 24.4 - - - 0.2 0.2 0.2 - - 15.0
Seven Hills (Radio FM 103.2) 1.0 - - - - - - - - - - - 0.5 1.0 0.5 0.5 4.0 - 0.5 22.0 12.0 8.0 - - - - - 1.5 0.5 - 3.5
Seven Hills (Collins St) 3.6












1.6
11.4
2.4











South Creek (Elizabeth Drive) 0.1 - - - 0.1 - - - - - - -
- - 0.1 1.2 - - 1.0 1.6 1.0 0.1 - - - - 0.1 - - 0.5
St Clair (Juba Close) 3.0 - 1.0 - - - - - - - - 2.0 - - 1.0 - 10.0 - - 24.0 12.0 14.0 1.0 - - - - - - - 4.0
Toongabbie Bowling Club 2.0 - - - - - - - - - - - - - 1.0 - 4.0 - 1.5 32.0 11.5 9.5 - - - - - 1.0 - - 3.5
Toongabbie Ck (Redbank Road (Toongabbee 1.5 - - - - - - - - - - - 0.5 - 0.5 0.5 2.5 - 7.0 58.5 12.5 11.5 - - - - - 1.0 - - 2.0
West Pennant Hills (Cumberland S F Alert 3.0 - - - - 0.5 0.5 - - - - 11.0 - - 0.5 - 1.5 0.5 11.5 77.5 19.5 15.5 0.5 - - 0.5 - 1.5 - - 3.0
Willmot (Resolution Ave) 1.0 - - - - - - - - - - - - - - - - - - - - -








Windsor SWC (Hawkesbury River) 3.0 - - - - - - - - - - 1.0 - - 1.0 - - - - 17.0 13.0 51.0 - - - - - - 2.0 - 18.0
Illawarra (68)12345678910111213141516171819202122232425262728293031
Camden Airport AWS - - - - - - - - - - 0.8 0.8 - - 0.2 1.4 9.8 - 4.2 27.8 18.8 37.8 0.8 - - - - 0.6 - - 13.8
Camden Valley Golf Resort 1.0 - - - - - - - - - 1.0 - - - - 1.0 6.0 - 3.0 35.0 26.0 14.0 - - - - - 1.0 - - 10.0
Campbelltown (Kentlyn (Georges River Roa - - - - - - - - - - - - - - - 1.0 - - 6.0 34.0 23.0 14.0 9.0 5.0 2.0 - 1.0 - - 1.0 -
Campbelltown (Mount Annan) 0.4 0.2 - 0.2 - - - - - - 0.2 1.2 - - - 0.8 1.4 - 7.2 38.6 20.6 19.0 0.2 - - - - 0.4 - - 3.4
Rossmore (South Creek) 1.0 - - - - 1.0 - - - - - - 1.0 - - 1.0 24.0 - 2.0 47.0 12.0 12.0 - - - - - 1.0 - - 9.0

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 Friday 1 April 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