New South Wales in April 2015: Wettest April in 25 years

  • Wettest April since 1990
  • East Coast Low causes severe weather along central parts of the NSW coast
  • Coolest April days since 1999

The statewide average rainfall for NSW during April was 47.0% above average, making it the wettest April since 1990. Rainfall was above average across most of the state, particularly along the south and central coasts, with some stations in the Hunter and Sydney regions recording their wettest April on record.

The most significant rainfall event of the month was an East Coast Low that developed in a surface trough off the Hunter coast on the evening of the 20th. This system caused very heavy rain, strong winds and high seas in the Hunter, Sydney, and Illawarra regions over subsequent days, contributing to widespread flooding as well as numerous downed trees, large scale power outages persisting for several days in some areas, and coastal erosion. Rainfall totals for the 48 hours to 9am on the 22nd were broadly above 200 mm, reaching 436 mm at Maitland, with wind gusts reaching 135 km/h at several coastal locations and waves as high as 14.9 m in waters off Sydney. The SES reported more than 20,000 jobs and more than 150 flood rescues during this event, and hourly rainfall totals of over 100 mm led to major flooding along the Williams and Patersons Rivers, with several communities temporarily isolated by floodwaters. Twelve LGAs were declared Natural Disaster Areas as a result of this event.

Earlier in the month an East Coast Low in the southeast also produced widespread totals above 50 mm on the 8th, breaking April daily rainfall records at several locations, and wind gusts of 107 km/h at Green Cape. A coastal trough with an embedded low produced rain in the northeast of the state on the 4th and 5th, while a cold front and surface trough produced rain in inland NSW over the 18th and 19th.

Daytime temperatures were 1.0 °C below average in NSW during April, the coolest April since 1999, associated with well above average rainfall. Temperatures were particularly cold associated with the two East Coast Lows during the month, with parts of central NSW more than 8 °C below average on the 7th and large areas of northern NSW more than 8 °C below average on the 20th and 21st; both of these events broke daily cool maximum temperature records for April. These were followed by a period of persistent southerly winds and cool conditions during the final week of the month. The statewide average minimum temperature was 0.4 °C above average, associated with warm sea surface temperatures and cloudy conditions.

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Extremes in April 2015
Hottest day 37.6 °C at Wanaaring Post Office on the 16th
Warmest days on average 27.0 °C at Mungindi Post Office
Coolest days on average 7.5 °C at Thredbo AWS
Coldest day -0.7 °C at Thredbo AWS on the 19th
Coldest night -6.2 °C at Perisher Valley AWS on the 29th
Coolest nights on average 1.2 °C at Thredbo AWS
Warmest nights on average 17.4 °C at Byron Bay (Cape Byron AWS)
Warmest night 23.1 °C at Tibooburra Airport on the 15th
23.1 °C at Tibooburra Airport on the 16th
Warmest on average overall 20.8 °C at South West Rocks (Smoky Cape Lighthouse)
Coolest on average overall 4.4 °C at Thredbo AWS
Wettest overall 535.0 mm at Maitland Belmore Bridge (Hunter River)
Driest overall 8.2 mm at Bourke Airport AWS
Wettest day 307.5 mm at Maitland Belmore Bridge (Hunter River) on the 22nd
Strongest wind gust 135 km/h at Newcastle Nobbys Signal Station AWS on the 21st
135 km/h at Norah Head AWS on the 21st
135 km/h at Wattamolla AWS on the 21st

Maps
ObservedAnomalyDecile rank
Total
rainfall
Map of Rainfall totals Map of Percentage of normal rainfall Map of Rainfall deciles
Mean
daily
maximum
temperatures
Map of Mean maximum temperature Map of Anomaly in mean maximum temperature Map of Decile rank of mean maximum temperature
Mean
daily
minimum
temperatures
Map of Mean minimum temperature Map of Anomaly in mean minimum temperature Map of Decile rank of mean minimum temperature

Click on a map to show it full size in a pop-up window


Record highest April daily rainfall
New record
(mm)
Old
record
Years of
record
Branxton (Dalwood Vineyard) 199.4 on the 22nd 116.8 on the 16th in 1927 126
Tharwa General Store 90.2 on the 8th 78.0 on the 9th in 1945 72
Elderslie 175.0 on the 21st 132.6 on the 23rd in 1931 66
Williamtown RAAF 155.6 on the 21st 129.0 on the 21st in 1974 64
Carrow Brook 108.8 on the 21st 84.6 on the 8th in 1962 54
Dungog - Main Creek (Yeranda) 188.0 on the 21st 96.0 on the 25th in 2008 51
Paterson (Tocal AWS) 242.6 on the 21st 99.0 on the 1st in 2009 48
Lostock Dam 150.0 on the 21st 94.0 on the 2nd in 2009 46
Berridale (Myack Street) 68.0 on the 8th 52.0 on the 21st in 1990 44
Cooma Visitors Centre 70.3 on the 8th 67.2 on the 29th in 1988 42
Marrickville Golf Club 123.0 on the 21st 116.3 on the 27th in 1966 40
Gosford North (Glennie St) 140.0 on the 21st 106.2 on the 25th in 2007 37
Guyra Hospital 49.6 on the 4th 48.4 on the 13th in 1983 34
Mandalong (Mandalong Road) 140.0 on the 22nd 97.0 on the 17th in 2011 29
Cooma Airport AWS 66.4 on the 8th 60.5 on the 29th in 1988 28
Cessnock Airport AWS 126.6 on the 22nd 72.0 on the 2nd in 2009 25
Chatswood Bowling Club 131.0 on the 21st 78.0 on the 28th in 2003 25
Hampton (Bindo) 68.0 on the 21st 67.0 on the 20th in 1984 24
Box Hill (Hynds Road) 113.0 on the 21st 88.0 on the 18th in 2012 22
Bombala AWS 75.4 on the 8th 39.0 on the 22nd in 2001 21
Mount Boyce AWS 105.2 on the 21st 69.4 on the 2nd in 2009 21
Richmond RAAF 113.4 on the 21st 58.4 on the 1st in 2009 21
Canterbury Racecourse AWS 123.0 on the 21st 100.0 on the 11th in 1998 20
Little Hartley (Roscommon) 85.4 on the 21st 53.2 on the 18th in 2002 20
Moree Aero 54.4 on the 4th 38.8 on the 28th in 2007 20
Penrith Lakes AWS 85.6 on the 21st 43.8 on the 19th in 2012 20

Record highest April total rainfall
New record
(mm)
Old
record
Years of
record
Average for
April
Branxton (Dalwood Vineyard) 454.8 340.6 in 1931 152 71.4
Prospect Reservoir 422.2 363.5 in 1988 129 77.1
Elderslie 361.0 334.4 in 1931 84 66.6
Marrickville Golf Club 413.0 370.6 in 1927 80 107.1
Williamtown RAAF 362.4 361.2 in 1963 68 111.2
Carrow Brook 266.8 254.0 in 1988 53 78.4
Paterson (Tocal AWS) 528.2 416.0 in 1988 48 89.3
Lostock Dam 334.6 272.2 in 1988 46 77.1
Peakhurst Golf Club 339.0 228.8 in 1985 39 79.9
Avalon Beach (Avalon (Palmgrove Rd)) 382.2 315.2 in 1998 35 118.4
Cooma Airport AWS 137.0 132.7 in 1989 28 44.0
Mandalong (Mandalong Road) 490.8 465.4 in 1988 27 132.9
Putty Tea Rooms 195.8 164.1 in 1964 26 62.6
Cessnock Airport AWS 298.6 169.2 in 2008 25 59.6
Chatswood Bowling Club 392.0 302.2 in 1952 25 106.1
Beaumont (The Cedars) 448.2 300.0 in 1994 23 136.2
Dora Creek (Dora St) 481.8 336.6 in 2008 23 133.1
Box Hill (Hynds Road) 354.0 181.0 in 2012 22 63.9
Bathurst Airport AWS 122.4 97.2 in 2010 21 35.1
Bombala AWS 151.8 110.8 in 2014 21 42.4
Goulburn Airport AWS 86.8 79.8 in 1998 21 26.5
Green Cape AWS 225.2 172.0 in 2012 21 70.4
Inverell (Raglan St) 104.6 81.8 in 2003 21 36.5
Moree (Oodnadatta) 113.0 85.0 in 2003 21 26.4
Mount Boyce AWS 313.6 157.2 in 2009 21 71.9
Nullo Mountain AWS 156.6 111.6 in 2001 21 61.6
Richmond RAAF 353.0 131.2 in 2012 21 63.1
Scone Airport AWS 108.0 95.2 in 2000 21 37.4
Forbes Airport AWS 72.4 66.4 in 1998 20 23.8
Mandagery (Rawene) 107.0 79.8 in 1998 20 32.9
Moree Aero 78.6 69.2 in 2003 20 25.0
Orange Airport AWS 145.0 94.6 in 1998 20 41.3
Penrith Lakes AWS 258.8 93.6 in 2012 20 53.1

Record highest April temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Lord Howe Island Aero 27.2 on the 7th 27.0 on the 1st in 1998 27 23.2
Wanaaring Post Office 37.6 on the 16th 37.4 on the 3rd in 2012 24 28.0

Record lowest April daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Balranald (RSL) 13.3 on the 25th 13.8 on the 27th in 2008 107 24.0
Brewarrina Hospital 16.3 on the 30th 16.7 on the 30th in 1996 101 27.5
Nyngan Airport 13.6 on the 20th 15.6 on the 23rd in 1979 84 25.6
Condobolin Ag Research Stn 13.0 on the 20th 13.6 on the 28th in 2008 56 24.6
Cobar MO 13.4 on the 20th = 13.4 on the 9th in 1964 53 25.2
Barraba Post Office 13.0 on the 21st 14.0 on the 12th in 1994 50 25.1
Tenterfield (Federation Park) 12.0 on the 21st 12.4 on the 30th in 1966 50 21.8
Trangie Research Station AWS 12.2 on the 20th 13.0 on the 12th in 1994 47 24.4
Glen Innes Ag Research Stn 10.0 on the 21st 11.0 on the 12th in 1994 40 20.0
Camden Airport AWS 15.2 on the 20th 16.6 on the 29th in 2009 39 23.8
Murwillumbah (Bray Park) 17.2 on the 30th 18.1 on the 26th in 1983 39 26.1
Wanaaring Post Office 17.3 on the 20th 17.4 on the 22nd in 1998 24 28.0
Cobar Airport AWS 14.3 on the 20th 15.0 on the 28th in 2008 22 25.6
Richmond RAAF 15.0 on the 20th 16.4 on the 23rd in 1998 22 23.9
Armidale Airport AWS 9.5 on the 26th 11.4 on the 28th in 2008 21 19.7
Casino Airport AWS 17.0 on the 30th 18.2 on the 30th in 1996 21 25.8
Condobolin Airport AWS 13.0 on the 20th 13.9 on the 28th in 2008 21 24.5
Inverell (Raglan St) 13.8 on the 21st 15.6 on the 28th in 2008 21 24.6
Badgerys Creek AWS 15.0 on the 20th 16.5 on the 28th in 2008 20 23.9
Canterbury Racecourse AWS 15.7 on the 20th 16.5 on the 28th in 2008 20 23.4
Moree Aero 14.7 on the 21st 16.7 on the 28th in 2012 20 27.2
Penrith Lakes AWS 14.6 on the 20th 16.0 on the 23rd in 1998 20 24.4

Record highest April mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Lord Howe Island Aero 24.3 = 24.3 in 2010 26 23.2

Record lowest April mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Broken Hill Airport AWS 21.6 = 21.6 in 1996 25 24.3
Braidwood Racecourse AWS 17.6 = 17.6 in 2003 23 19.4
Cooma Airport AWS 15.3 16.0 in 1996 23 18.1
Inverell (Raglan St) 22.1 22.5 in 2003 20 24.6

Record highest April daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Dunedoo Post Office 19.1 on the 3rd 19.0 on the 11th in 1983 46 9.8

Record highest April mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Young Airport 9.0 8.8 in 2009 23 6.4

Record highest April mean temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Lord Howe Island Aero 21.8 21.7 in 2010 26 20.6

Summary statistics for April 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2015
Diff
from
average
Highest for
April
2015
Mean for
April
2015
Diff
from
average
Lowest for
April
2015
Total for
April
2015
Average
for
April
Rank of
April
2015
Fraction of
April
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 23.8 -2.6 36.0 15th 11.3 -1.3 4.2 28th 10.6 10.1 average 105%
Tibooburra Airport 25.7 -2.0 34.9 2nd 13.6 -1.3 8.0 28th 23.6 10.1 high 234%
White Cliffs AWS 24.7   34.1 1st 12.6   6.7 27th 23.6 14.8 high 159%
Wilcannia Aerodrome AWS 25.0 -2.1 34.6 15th 10.8 -1.1 4.0 29th 16.0 13.5 average 119%
Western (Lower Darling) (district 47)
Broken Hill (Patton Street) 22.7 -1.2 35.4 15th 11.6 -0.2 4.4 20th 44.8 18.1 v high 248%
Broken Hill Airport AWS 21.6 -2.7 34.2 15th 10.4 -0.8 4.3 20th 36.4 20.9 high 174%
Lake Victoria Storage 22.0 -1.5 32.8 1st 10.8 +0.3 6.7 20th 60.3 18.6 v high 324%
Menindee Post Office 23.5 -2.1 35.9 15th 11.2 +0.3 6.7 7th 40.7 16.6 v high 245%
Pooncarie Mail Agency 23.6 -2.7 34.9 15th 11.0 -0.2 6.2 20th 43.5 17.8 v high 244%
Western (Upper Darling) (district 48)
Bourke Airport AWS 26.8 -1.2 35.6 16th 13.5 +0.4 6.9 9th 8.2 25.2 average 33%
Brewarrina Hospital 26.7 -0.8 34.2 16th 13.0 +0.4 4.9 28th 56.0 29.5 high 190%
Cobar Airport AWS 24.3 -1.3 33.9 16th 12.2 +1.2 3.2 28th 16.2 17.3 average 94%
Cobar MO 24.0 -1.2 33.8 16th 12.9 0.0 5.2 20th 19.8 25.6 average 77%
Collarenebri (Albert St) 26.5 -1.1 33.9 16th 13.7 +1.2 4.9 29th 15.0 34.4 average 44%
Lightning Ridge Visitors Information Cen 26.7 -1.2 33.5 16th     5.0 29th 32.5 29.9 average 109%
Wanaaring Post Office 26.5 -1.5 37.6 16th 12.6 -0.2 6.5 27th 46.0 15.8 v high 291%
Western (Southwest Plains) (district 49)
Balranald (RSL) 22.3 -1.7 34.0 15th 9.9 +0.3 5.1 3rd 71.7 23.8 v high 301%
Ivanhoe Aerodrome AWS 23.1 -2.7 34.8 15th 11.7 -0.4 5.0 29th 41.4 18.9 high 219%
Central Western Plains (South) (district 50)
Condobolin Ag Research Stn 22.9 -1.7 31.4 15th 11.3 +1.4 3.0 28th 64.7 31.1 v high 208%
Condobolin Airport AWS 23.5 -1.0 32.5 15th 11.5 +2.2 3.6 28th 58.0 20.7 v high 280%
Peak Hill Post Office 23.1 -2.0 32.0 15th 12.6 +0.4 4.7 28th 86.2 42.2 high 204%
West Wyalong Airport AWS 22.3 -1.7 30.8 15th 10.9 +1.4 2.6 28th 23.2 19.4 average 120%
Central Western Plains (North) (district 51)
Coonamble Airport AWS 24.2 -2.1 31.8 16th 12.7 +0.9 5.0 28th
Nyngan Airport 24.8 -0.8 34.1 16th 12.7 +0.9 7.0 28th 43.8 34.7 high 126%
Trangie Research Station AWS 23.3 -1.1 32.3 16th 12.8 +1.6 5.8 28th 114.4 40.0 v high 286%
Northwest Plains (West) (district 52)
Mungindi Post Office 27.0 -0.7 32.5 1st 13.3 +0.5 4.8 28th 57.4 30.7 high 187%
Walgett Airport AWS 26.3 -1.2 33.2 16th 12.3 +0.8 3.3 29th 24.0 20.8 average 115%
Northwest Plains (East) (district 53)
Moree Aero 24.7 -2.5 30.3 2nd 12.7 +0.2 4.1 28th 78.6 25.0 highest 314%
Northwest Slopes (North) (district 54)
Barraba Post Office 23.5 -1.6 29.0 16th     5.0 8th 69.0 39.3 high 176%
Narrabri Airport AWS 24.3 -2.6 30.3 16th 12.3 +0.1 3.3 28th 107.0 30.3 v high 353%
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 24.0 -2.3 30.2 2nd 11.2 +0.7 2.0 28th 93.2 24.0 v high 388%
Gunnedah Resource Centre 23.8 -1.4 30.1 2nd 12.8 0.0 6.0 28th 89.8 38.9 high 231%
Tamworth Airport AWS 23.8 -1.5 30.8 2nd 10.6 +0.7 3.3 28th 85.6 27.1 v high 316%
Woolbrook (Danglemah Road) 19.5 -1.8 26.2 17th 6.2 +0.7 -1.5 28th 100.6 41.8 v high 241%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 19.3 -1.0 26.7 17th 7.3 +0.6 -2.0 28th 85.4 41.3 high 207%
Armidale Airport AWS 18.2 -1.5 25.1 16th 8.2 +0.6 1.0 28th 86.2 37.1 v high 232%
Glen Innes Ag Research Stn 18.7 -1.3 25.0 17th 8.3 +0.3 1.0 27th 159.6 41.5 v high 385%
Glen Innes Airport AWS 18.7 -2.0 24.9 17th 7.3 +0.7 -1.2 27th 221.8 52.9 v high 419%
Guyra Hospital 16.8 -1.2 23.7 16th 7.2 +0.3 0.0 28th 126.0 52.5 high 240%
Inverell (Raglan St) 22.1 -2.5 28.5 17th 8.6 +1.3 1.5 28th 104.6 36.5 highest 287%
Inverell Research Centre 21.5 -2.1 27.3 17th 10.9 -0.1 4.6 8th 126.6 41.0 v high 309%
Tenterfield (Federation Park) 19.9 -1.9 24.8 16th 8.1 -0.4 0.1 27th 80.5 47.3 high 170%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 21.7 -0.4 25.7 6th 12.8 -0.7 6.7 22nd 106.2 100.4 high 106%
Upper North Coast (district 58)
Ballina Airport AWS 24.9 0.0 28.6 19th 15.7 +0.5 10.4 23rd 304.8 194.6 high 157%
Byron Bay (Cape Byron AWS) 24.1 +0.2 28.7 25th 17.4 -0.2 12.3 22nd 163.8 183.5 average 89%
Casino Airport AWS 26.3 +0.5 31.1 6th 13.8 -0.3 8.0 27th 79.0 72.3 average 109%
Evans Head RAAF Bombing Range AWS 25.3 +0.8 30.7 19th 15.5 -1.0 10.3 22nd 224.4 170.4 high 132%
Grafton Airport AWS 25.1   28.5 17th 13.2   6.8 22nd 118.0 91.8 average 129%
Grafton Research Stn 25.6 0.0 29.1 17th 14.5 +0.1 8.1 22nd 88.8 80.8 average 110%
Lismore Airport AWS 25.5 -0.4 29.5 6th 13.7 -0.5 6.9 28th 138.0 125.7 average 110%
Murwillumbah (Bray Park) 25.8 -0.3 29.8 19th 15.2 -0.4 6.7 22nd 183.5 158.9 high 115%
Yamba Pilot Station 24.8 +0.5 28.9 19th 16.5 0.0 11.5 22nd 183.2 162.8 high 113%
Lower North Coast (district 59)
Coffs Harbour Airport 24.2   28.6 7th 14.9   9.2 22nd 177.0
Coffs Harbour MO 24.2 +0.2 28.4 7th 14.8 -0.4 9.6 8th 182.2 178.4 average 102%
Dorrigo (Old Coramba Rd) 19.9 +0.2 25.8 16th 10.2 -0.4 5.8 27th 198.7 145.0 average 137%
Kempsey Airport AWS 24.9 -0.2 29.4 7th 12.8 -0.2 6.5 26th 95.4 79.2 average 120%
South West Rocks (Smoky Cape Lighthouse) 24.9 +0.9 28.1 17th 16.9 +0.3 13.2 29th 173.6 171.5 average 101%
Manning (district 60)
Forster - Tuncurry Marine Rescue 23.8 +0.1 27.8 17th 14.6 -0.5 9.4 14th 141.5 129.4 average 109%
Port Macquarie Airport AWS 24.5 +0.3 28.9 7th 14.0 +0.2 9.2 22nd 95.2 144.0 average 66%
Taree Airport AWS 24.3 +0.1 30.1 16th 13.9 +0.3 9.8 22nd 68.6 108.7 average 63%
Yarras (Mount Seaview) 23.9 -0.5 29.6 16th 13.5 +0.9 9.0 28th 235.4 145.6 high 162%
Hunter (district 61)
Cessnock Airport AWS 23.5 -0.6 31.1 16th 12.2 +1.8 6.8 28th 298.6 59.6 highest 501%
Cooranbong (Lake Macquarie AWS) 23.4   31.1 16th 13.0   8.0 28th 300.4
Gosford AWS 22.8   31.2 16th 14.1   9.7 29th 462.6
Maitland Visitors Centre 24.2 -0.2 32.0 16th     9.5 14th 357.8 97.8 v high 366%
Mangrove Mountain AWS 21.1 -0.6 29.1 16th 12.0 0.0 6.7 29th 174.8 89.5 v high 195%
Merriwa (Roscommon) 22.3   30.3 16th 10.5   2.5 28th 113.2 34.6 v high 327%
Murrurundi Gap AWS 19.3 -1.5 26.7 16th 10.4 -0.7 5.5 28th 93.8 38.1 v high 246%
Murrurundi Post Office 22.0 -1.7 29.6 2nd 9.3 +0.8 0.7 28th 95.8 52.7 high 182%
Nelson Bay (Nelson Head) 22.4 -1.2 27.0 2nd 16.4 +1.3 13.5 28th 321.3 129.6 v high 248%
Newcastle Nobbys Signal Station AWS 22.7 -0.1 31.5 16th 15.8 +0.5 12.2 26th 295.2 117.2 v high 252%
Newcastle University 23.8 0.0 31.2 16th 14.5 +0.7 10.6 14th 109.4 124.8 average 88%
Norah Head AWS 22.2 -0.7 27.4 16th 16.0 +0.2 12.3 26th 321.4 136.7 v high 235%
Paterson (Tocal AWS) 23.4 -0.8 31.5 16th 13.6 +1.1 9.3 28th 528.2 89.3 highest 591%
Scone Airport AWS 23.2 -1.2 31.6 16th 11.4 +1.5 4.2 28th 108.0 37.4 highest 289%
Singleton STP 23.9 -0.7 31.7 2nd 13.1 +2.3 4.5 28th 294.8 63.2 v high 466%
Williamtown RAAF 23.4 -0.3 31.5 16th 13.8 +0.6 9.3 15th 362.4 111.2 highest 326%
Central Tablelands (North) (district 62)
Gulgong Post Office 21.8 -1.6 29.5 16th 11.1 +1.4 3.8 28th 95.2 44.3 high 215%
Mudgee Airport AWS 21.4 -1.4 29.5 2nd 10.1 +2.5 2.2 28th 93.6 36.0 v high 260%
Nullo Mountain AWS 15.8 -0.9 23.2 16th 8.3 -0.1 3.2 27th 156.6 61.6 highest 254%
Central Tablelands (South) (district 63)
Bathurst Agricultural Station 18.9 -1.2 26.1 15th 8.4 +1.7 0.5 28th 122.8 42.3 v high 290%
Bathurst Airport AWS 18.7 -2.0 26.0 15th 8.3 +2.1 1.3 28th 122.4 35.1 highest 349%
Katoomba (Murri St) 16.3 -0.4 24.0 15th 8.9 +0.2 3.2 28th 398.2 123.4 v high 323%
Lithgow (Cooerwull) 16.9   24.6 2nd 7.9   -0.6 28th 184.2 58.7 v high 314%
Mount Boyce AWS 15.7 -1.4 23.5 15th 8.4 -0.2 4.0 28th 313.6 71.9 highest 436%
Oberon (Springbank) 16.0 -1.1 24.0 1st 6.7 +1.3 0.0 28th 156.8 58.2 v high 269%
Orange Airport AWS 16.8 -1.6 24.4 2nd 7.0 +1.7 -0.4 28th 145.0 41.3 highest 351%
Springwood (Valley Heights) 21.1   29.9 16th 12.3   7.7 27th 312.0 89.5 v high 349%
Central Western Slopes (North) (district 64)
Coonabarabran (Namoi Street) 22.0 -1.9 29.0 16th 8.6 +1.5 0.0 28th 104.2 52.4 high 199%
Coonabarabran Airport AWS 20.7 -2.1 27.9 16th 11.5 -0.2 5.7 28th 136.6 38.9 high 351%
Dunedoo Post Office 22.9 -1.4 31.1 16th 11.9 +2.1 2.4 28th 102.6 41.4 v high 248%
Central Western Slopes (South) (district 65)
Cowra Airport AWS 21.9 -1.8 30.5 15th 10.4 +2.1 3.0 28th 102.4 32.7 v high 313%
Dubbo Airport AWS 23.3 -1.4 31.4 16th 11.4 +1.3 3.9 28th 81.8 35.6 high 230%
Forbes Airport AWS 22.5 -2.1 31.4 15th 10.9 +1.6 3.2 28th 72.4 23.8 highest 304%
Parkes Airport AWS 22.2 -1.8 30.5 15th 10.6 +1.3 2.1 28th 87.6 32.3 v high 271%
Wellington (Agrowplow) 23.3 -1.2 31.7 16th 10.7 +1.3 3.1 28th 92.8 45.3 high 205%
Metropolitan (East) (district 66)
Bankstown Airport AWS 23.0 -0.7 31.7 16th 13.5 +0.8 7.8 28th 299.6 88.4 v high 339%
Canterbury Racecourse AWS 21.3 -2.1 30.2 16th 12.2 -0.5 7.5 28th 397.6 113.4 v high 351%
Holsworthy Aerodrome AWS 22.5   31.4 16th 12.9   7.7 28th 239.2
Parramatta North (Masons Drive) 22.5 -1.3 31.2 16th 13.1 +0.3 7.8 28th 406.5 94.8 v high 429%
Sydney (Observatory Hill) 22.7 +0.3 31.7 16th 15.3 +0.6 10.3 28th 366.8 128.6 v high 285%
Sydney Airport AMO 22.6 -0.3 32.6 16th 15.3 +1.1 10.6 28th 349.0 109.3 v high 319%
Sydney Harbour (Wedding Cake West) 21.2 -1.1 25.8 18th 15.9 -0.7 11.9 28th
Sydney Olympic Park AWS (Archery Centre) 23.0   31.7 16th 14.0   8.5 28th 412.8
Terrey Hills AWS 21.1 -1.0 30.1 16th 13.7 0.0 8.7 28th 360.2 143.2 v high 252%
Metropolitan (West) (district 67)
Badgerys Creek AWS 22.3 -1.6 30.2 16th 12.7 +1.4 7.2 28th 253.4 54.2 v high 468%
Horsley Park Equestrian Centre AWS 22.6 -1.0 30.7 16th 13.2 +0.4 9.1 28th 298.2 81.8 v high 365%
Penrith Lakes AWS 22.9 -1.5 31.2 16th 13.8 +0.8 8.4 28th 258.8 53.1 highest 487%
Prospect Reservoir 23.3 -0.4 30.4 16th 13.5 +0.5 8.9 28th 422.2 77.1 highest 548%
Richmond RAAF 22.9 -1.0 31.3 16th 13.1 +1.6 6.4 28th 353.0 63.1 highest 559%
Illawarra (district 68)
Albion Park (Wollongong Airport) 22.0 -1.2 31.1 16th 13.4 +1.4 8.2 29th 261.2 81.9 v high 319%
Bellambi AWS 21.4 -0.8 31.5 16th 15.2 -0.3 11.2 27th
Camden Airport AWS 22.6 -1.2 31.1 16th 11.9 +0.9 5.3 28th 219.8 70.5 v high 312%
Campbelltown (Mount Annan) 22.5   30.9 16th 11.8   4.9 28th 226.0
High Range AWS (Wanganderry) 17.4   26.1 2nd 9.2   4.2 28th 151.8
Jervis Bay (Point Perpendicular) 20.4 -0.8 29.1 2nd 14.9 -0.4 10.5 27th 315.6 132.4 high 238%
Kiama (Bombo Headland) 21.4   31.2 16th 15.1   11.0 27th 247.6
Moss Vale AWS 17.4 -1.5 25.7 16th 9.1 +0.7 1.0 29th 210.4 57.4 v high 367%
Nowra RAN Air Station AWS 21.4 -1.3 29.9 16th 12.7 +0.4 8.0 28th 233.6 70.9 v high 329%
South Coast (district 69)
Batemans Bay (Catalina Country Club) 21.1 -1.1 29.4 2nd 11.2 +0.7 4.2 27th 145.6 69.3 v high 210%
Bega AWS 20.7 -1.5 28.5 1st 10.6 +1.2 3.0 29th 38.6 33.8 high 114%
Braidwood Racecourse AWS 17.6 -1.8 25.6 16th 6.9 +1.2 -0.7 27th 102.4 44.1 v high 232%
Green Cape AWS 19.7 -1.1 24.7 5th 14.2 -0.4 10.5 20th 225.2 70.4 highest 320%
Merimbula Airport AWS 20.5 -1.0 25.5 16th 11.6 +0.7 7.2 29th 200.2 74.0 v high 271%
Montague Island Lighthouse 20.1 -0.4 25.1 2nd 15.0 -0.2 11.1 8th 122.0 81.5 high 150%
Moruya Airport AWS 21.0 -1.0 28.4 2nd 11.8 +1.0 4.0 27th 134.6 52.7 high 255%
Moruya Heads Pilot Station 20.7 -0.9 27.2 2nd 12.8 +0.5 7.4 28th 143.4 86.9 high 165%
Narooma (Marine Rescue) 20.3 -0.8 24.6 2nd 13.4 +0.4 8.2 27th 168.8 81.7 high 207%
Nerriga AWS 18.3   26.9 16th 8.1   0.4 29th 125.2
Ulladulla AWS 20.9 -0.5 29.2 2nd 13.9 0.0 9.1 27th 229.2 108.4 v high 211%
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 16.5 -2.0 26.0 1st 6.5 +1.3 1.1 28th 151.8 46.3 v high 328%
Bombala AWS 15.8 -2.0 26.9 1st 6.3 +1.0 0.7 14th 151.8 42.4 highest 358%
Canberra Airport 19.4   26.6 16th 7.2   -0.8 27th 91.8
Cooma Airport AWS 15.3 -2.8 23.8 1st 4.9 +1.3 -3.2 28th 137.0 44.0 highest 311%
Cooma Visitors Centre 16.8 -2.6 25.9 16th 5.7 +1.7 -1.5 29th 120.1 41.4 v high 290%
Goulburn Airport AWS 18.4 -1.4 25.8 15th 7.5 +2.0 0.1 28th 86.8 26.5 highest 328%
Goulburn TAFE 18.4 -1.6 25.8 15th 8.7 +0.9 2.3 28th 89.6 45.7 high 196%
Mount Ginini AWS 10.0 -1.6 17.7 2nd 3.4 -0.2 -1.9 20th 120.4 62.7 high 192%
Taralga Post Office 17.6 -1.0 25.5 15th 7.4 +1.3 -1.0 29th 144.9 59.4 v high 244%
Tuggeranong (Isabella Plains) AWS 18.5 -2.5 26.4 16th 7.8 +1.1 0.4 29th 96.8 35.9 high 270%
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 9.9   16.9 1st 1.3   -6.2 29th 204.2
Thredbo AWS 7.5 -1.8 13.7 1st 1.2 -0.3 -5.3 29th 196.8 101.0 high 195%
Thredbo Village 12.1 -1.7 19.6 1st 2.7 +1.1 -4.5 29th 201.4 111.8 high 180%
Southwest Slopes (South) (district 72)
Albury Airport AWS 22.0 -0.4 29.1 1st 10.0 +1.8 3.6 28th 83.4 41.5 high 201%
Cabramurra SMHEA AWS 11.5 -1.4 17.5 1st 5.2 -0.5 -0.6 27th 140.4 73.2 high 192%
Hume Reservoir 21.7 0.0 29.0 1st 11.9 +1.9 7.3 22nd 98.2 52.6 high 187%
Khancoban AWS 20.7 -0.8 28.6 1st 8.0 +0.9 1.8 28th 112.6 55.1 high 204%
Tumbarumba Post Office 19.2 -0.7 26.0 1st 6.7 +1.7 0.6 28th 86.2 66.1 high 130%
Wagga Wagga AMO 22.0 -0.5 29.5 1st 10.6 +1.5 3.8 28th 49.4 40.6 high 122%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 20.2 -0.8 28.1 1st 9.7 +0.2 4.5 9th 91.3 65.2 high 140%
Cootamundra Airport 21.4 -1.2 28.2 1st 9.3 +2.2 -0.2 28th 58.8 34.1 high 172%
Grenfell (Manganese Rd) 21.2 -1.4 29.4 15th 9.7 +0.4 2.3 28th 114.4 47.2 v high 242%
Temora Airport 22.2 -1.4 29.8 15th 10.4 +2.1 1.8 28th 49.4 27.7 high 178%
Young Airport 21.0 -1.7 29.4 15th 9.0 +2.6 -0.2 28th 72.8 32.0 high 228%
Riverina (East) (district 74)
Corowa Airport 22.7 +0.2 30.0 1st 9.4 +0.8 4.0 20th 95.1 37.4 v high 254%
Deniliquin Airport AWS 22.0 -1.4 32.6 15th 9.3 -0.1 3.1 28th 39.8 24.6 high 162%
Narrandera Airport AWS 22.6 -0.8 32.1 15th 10.6 +1.2 3.3 28th 49.2 34.4 high 143%
Tocumwal Airport 21.8 -1.2 30.8 1st 9.9 +0.2 4.9 29th 65.3 32.7 high 200%
Yanco Agricultural Institute 22.5 -1.6 31.9 15th 11.4 -0.2 5.6 20th 40.8 29.8 high 137%
Riverina (West) (district 75)
Griffith Airport AWS 22.8 -1.1 33.6 15th 11.2 +1.1 5.5 9th 38.6 28.0 high 138%
Hay Airport AWS 22.4   33.9 15th 10.1   3.9 3rd 49.0
Hillston Airport 23.1 -1.2 33.8 15th 10.9 +0.3 4.0 29th 43.0 27.1 high 159%
Lake Cargelligo Airport 23.5 -1.7 32.0 15th 12.2 +1.5 7.0 29th 47.5 30.5 high 156%
Offshore Islands (district 200)
Lord Howe Island Aero 24.3 +1.1 27.2 7th 19.2 +1.1 14.9 29th 325.6 140.9 v high 231%
Norfolk Island Aero 23.6 +0.9 25.8 7th 18.8 +1.0 16.1 17th 62.6 123.3 average 51%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in New South Wales 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 Friday 1 May 2015. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages for individual sites 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 10 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 used for temperature area averages.

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