New South Wales in December 2020: wet across the state

Rainfall in December 2020 was above average across much of New South Wales, making it the wettest December since 2010 for the state as a whole. A slow-moving low pressure system in the middle of the month saw much of the northeast record their wettest December on record. Temperatures were generally milder than in recent year and overall, it was the coolest December since 2011.

Wet across the state

  • Rainfall in December was above average across much of New South Wales, except for parts of the Riverina.
  • For the state as whole, December rainfall was 81.8 mm, 63% above the 1961–1990 average and the wettest December since 2010.
  • A slow-moving low pressure system in the middle of the month, and another trough on the 21st, resulted in much of the north-east area having its wettest December on record.
  • Rainfall was more than twice the December average over much of New England and the Northwest Slopes, and over three times the December average along the north-east coast.
  • The highest monthly total was 812.6 mm at Yarras (Mount Seaview) and many sites received over 600 mm.
  • Many sites had their highest total December rainfall on record or their highest for at least 20 years.

Mild conditions

  • Daytime temperatures across New South Wales were close to or below the December average.
  • For the state as a whole, the December mean maximum temperature was 0.14 °C below average, making it the coolest December since 2011.
  • Night-time temperatures were above average to very much above average in the north and along the coast, and below average in the south, particularly in the Riverina.
  • For the state as a whole, the December mean minimum temperature was 0.69 °C above average, but after several very warm years nights were the coolest in December since 2013.
  • The state-wide December mean temperature was 0.28 °C above average, making it the coolest December since 2011; in contrast December 2019 was 3.30 °C above average.
  • Heatwave conditions at the start of the month saw a number of sites have their highest December temperature on record or their warmest December night on record.
  • Brewon AWS, near Walgett, recorded 48.0 °C on the 1st, which is the second-highest temperature ever for December in New South Wales.
  • An inland trough on the 21st resulted in several sites having their coldest December day on record.

Heavy rain in the north-east

  • A slow-moving low pressure system and trough was near the coast in the New South Wales and Queensland border region from the 12th to the 17th.
  • The system brought widespread heavy rain, damaging winds, abnormally high tides and dangerous surf to the north-east coastal area.
  • Flash and riverine flooding was reported for the Tweed, Clarence, Richmond/Wilsons and Bellinger rivers.
  • Damaging storm surges coincided with king tides, resulting in hazardous surf conditions and major coastal erosion at numerous beaches in the north-east, notably at Byron Bay.
  • Daily totals over 200 mm were recorded at many sites over the 12th to the 17th, and sites had their highest December daily rainfall on record.
  • Five-day totals of over 400 mm were recorded near the Queensland border, the highest such totals in the area since at least April 2017.

Further information

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Extremes in December 2020
Hottest day 48.0 °C at Walgett (Brewon AWS) on the 1st
Warmest days on average 35.0 °C at Lightning Ridge Visitor Information Cent
35.0 °C at Mungindi Post Office
Coolest days on average 13.6 °C at Thredbo AWS
Coldest day 1.9 °C at Thredbo AWS on the 6th
1.9 °C at Thredbo AWS on the 7th
Coldest night -6.0 °C at Perisher Valley AWS on the 11th
Coolest nights on average 3.4 °C at Perisher Valley AWS
Warmest nights on average 22.0 °C at Wanaaring (Borrona Downs AWS)
Warmest night 29.7 °C at Wanaaring (Borrona Downs AWS) on the 5th
Warmest on average overall 28.1 °C at Wanaaring (Borrona Downs AWS)
Coolest on average overall 8.8 °C at Thredbo AWS
Wettest overall 812.6 mm at Yarras (Mount Seaview)
Wettest day 300.0 mm at Bellwood (Nambucca Heads (Nambucca Resor on the 12th
Strongest wind gust 159 km/h at Montague Island Lighthouse on the 22nd

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 December daily rainfall
New record
(mm)
Old
record
Years of
record
Old Junee (Millbank) 78.6 on the 17th 72.9 on the 27th in 1971 126
Mullumbimby (Fairview Farm) 198.0 on the 13th 191.8 on the 3rd in 1940 123
Junee Treatment Works 78.2 on the 17th 75.7 on the 24th in 1971 96
Glen Morrison (Branga Plains) 73.0 on the 22nd 70.0 on the 23rd in 2015 81
Murwillumbah (Dungay (Taleswood)) 273.0 on the 13th 246.0 on the 13th in 1991 68
Clunes (Flatley Drive) 124.0 on the 13th =124.0 on the 8th in 2004 59
Green Pigeon (Morning View) 196.8 on the 15th 115.0 on the 19th in 1988 52
Nowendoc (Green Hills) 83.0 on the 22nd 77.2 on the 29th in 1978 50
Murwillumbah (Bray Park) 160.0 on the 18th 149.0 on the 28th in 2014 49
Manilla (Fern Hill) 79.4 on the 22nd 53.3 on the 9th in 1970 44
Swansea (Catherine St) 79.8 on the 22nd 77.0 on the 5th in 1992 34
Nundle (Keeva) 82.8 on the 22nd 73.0 on the 11th in 2002 32
Millbank 84.0 on the 16th 83.0 on the 13th in 1991 28
Tamworth Airport AWS 92.2 on the 22nd 66.8 on the 11th in 2010 28
Albury Airport AWS 50.2 on the 17th 49.6 on the 2nd in 2017 27
Casino Airport AWS 152.2 on the 15th 91.0 on the 24th in 1998 26
Glen Innes Airport AWS 92.2 on the 4th 61.2 on the 28th in 2008 25
Eungella (Oxley River) 207.0 on the 13th 86.5 on the 28th in 2009 23
Evans Head RAAF Bombing Range AWS 111.6 on the 12th 80.2 on the 28th in 2014 23
St Ives (Richmond Avenue) 73.0 on the 30th 70.2 on the 11th in 2002 23
Moruya Airport AWS 79.0 on the 16th 61.2 on the 7th in 2014 22
Nashua (Wilsons River) 131.0 on the 13th 98.0 on the 25th in 2010 22
Baryulgil (Clarence River) 110.8 on the 15th 78.8 on the 30th in 2000 21
Bentley (Back Creek) 121.0 on the 13th 95.0 on the 30th in 2009 21
Boat Harbour (Rous River) 298.0 on the 13th 126.0 on the 28th in 2014 21
Bowra Sugarloaf 187.0 on the 15th 171.0 on the 29th in 2009 21
Corndale (Coopers Creek) 131.0 on the 13th 119.0 on the 8th in 2004 21
Hillview (Shoalhaven River) 92.0 on the 17th 66.0 on the 7th in 2014 21
McLeans Ridges (Lascott Drive) 127.6 on the 30th 94.4 on the 8th in 2004 21
Nimbin (Goolmangar Creek) 147.0 on the 13th 112.0 on the 28th in 2014 21
North Murwillumbah (Tweed River) 226.0 on the 13th 167.0 on the 28th in 2014 21
Rock Valley (Leycester Creek) 146.5 on the 15th 78.0 on the 28th in 2014 21
Tuncester (Leycester Creek) 148.0 on the 17th 73.0 on the 8th in 2004 21
Bellbrook (Macleay River) 65.0 on the 15th 51.0 on the 17th in 2015 20
Gunnedah Airport AWS 71.8 on the 22nd 60.2 on the 23rd in 2007 20
Kempsey Airport AWS 109.2 on the 16th 72.0 on the 2nd in 2010 20
Moss Vale AWS 86.8 on the 17th 62.8 on the 14th in 2018 20
Ogunbil (Amaroo) 84.4 on the 22nd 62.2 on the 23rd in 2015 20
Pillar Valley 132.8 on the 12th 111.8 on the 22nd in 2017 20
Uki (Tweed River) 211.0 on the 13th 130.0 on the 28th in 2014 20



Record highest December total rainfall
New record
(mm)
Old
record
Years of
record
Average for
December
Tweed Heads Golf Club 558.0 487.2 in 1955 135 146.5
Uralla (Salisbury Court) 241.8 202.9 in 1947 131 89.1
Uralla (Dumaresq St) 233.8 228.1 in 1996 120 88.1
Kelvin (Kahana) 183.0 172.0 in 1985 103 63.0
Nimbin Post Office 546.9 497.2 in 1970 98 160.5
Nymboida (Sutton St) 428.4 370.8 in 2018 94 127.4
South West Rocks (Smoky Cape Lighthouse) 513.4 466.0 in 1947 82 121.9
Yarras (Mount Seaview) 812.6 611.2 in 2014 71 196.2
Murwillumbah (Dungay (Taleswood)) 681.2 595.2 in 2010 68 193.9
Grafton Research Stn 513.0 265.2 in 1931 65 107.6
The Channon 489.5 408.4 in 2010 65 155.2
Meldrum (Coolawarrah) 607.0 412.9 in 1962 62 177.8
Nana Glen (Cowling Close) 581.6 379.4 in 2018 62 138.5
Rosebank (Repentance Creek) 604.2 581.8 in 2010 62 178.7
Bulga (South Wambo) 192.0 189.8 in 1991 61 73.5
Taylors Arm 465.0 387.3 in 1962 59 127.2
Tia (Highrent) 226.2 221.8 in 2014 58 101.1
Uralla (Blue Nobby) 273.0 218.6 in 2009 58 106.6
Clunes (Flatley Drive) 483.5 432.0 in 2010 57 151.0
Mount Mitchell (Tirranna) 261.0 224.6 in 2009 57 119.3
Lillian Rock (Williams Road) 603.0 596.7 in 1970 53 181.9
Wooli Beach 425.2 329.0 in 1975 53 114.3
Green Pigeon (Morning View) 585.2 543.3 in 1970 52 181.7
Number One (Murrays Creek) 230.2 224.0 in 1988 51 104.2
Kunghur (The Junction) 615.0 555.4 in 1991 50 153.2
Murwillumbah (Bray Park) 638.7 499.9 in 2010 49 175.8
Weetaliba (Munna) 202.4 200.4 in 2010 49 68.5
Nowendoc (Green Hills) 281.0 261.8 in 1978 48 114.7
Krambach (Tipperary) 324.0 246.3 in 1992 47 98.5
Manilla (Fern Hill) 233.0 189.7 in 1970 43 78.8
Killawarra (Uralba) 430.1 211.8 in 2007 38 104.4
New Italy (Vineyard Haven) 374.0 270.4 in 2014 37 107.3
Swansea (Catherine St) 216.6 212.5 in 1992 33 86.7
Nundle (Keeva) 239.4 206.1 in 2010 29 111.7
Tamworth Airport AWS 223.6 195.8 in 2014 28 80.7
Armidale Airport AWS 256.8 189.0 in 1994 27 100.8
Millbank 412.0 235.0 in 1988 26 124.5
Norah Head AWS 172.8 133.8 in 2007 26 69.4
Port Macquarie Airport AWS (Comparison) 407.0 261.6 in 2017 26 120.6
Armidale (Tree Group Nursery) 193.6 159.6 in 2014 24 89.1
Casino Airport AWS 438.6 256.0 in 2010 24 132.2
Dorrigo (Old Coramba Rd) 771.7 387.2 in 2014 24 200.4
Taree Airport AWS 380.8 152.0 in 2014 24 90.8
Eungella (Oxley River) 572.0 489.5 in 2010 23 168.3
Evans Head RAAF Bombing Range AWS 415.6 270.2 in 2010 23 104.9
Point Lookout 493.4 456.2 in 2000 23 153.1
Nashua (Wilsons River) 547.0 432.0 in 2010 22 138.4
Baryulgil (Clarence River) 358.8 201.4 in 2015 21 114.4
Boat Harbour (Rous River) 755.0 522.0 in 2010 21 209.9
Grafton Airport AWS 379.2 295.0 in 2004 21 131.7
Guyra (Box Point) 205.8 162.0 in 2000 21 85.7
Inverell (Elsmore Village) 183.2 182.4 in 2007 21 95.9
McLeans Ridges (Lascott Drive) 495.3 379.0 in 2010 21 139.3
Newcastle University 183.4 146.4 in 2002 21 71.6
Nimbin (Goolmangar Creek) 604.0 381.0 in 2010 21 140.6
North Murwillumbah (Tweed River) 531.0 462.0 in 2010 21 174.3
Rock Valley (Leycester Creek) 508.5 391.6 in 2010 21 135.0
Wollomombi (Wollomombi River) 205.0 203.0 in 2014 21 101.1
Wyong (Mount Elliot) 255.0 215.0 in 2007 21 89.4
Bowra Sugarloaf 691.0 370.0 in 2014 20 212.3
Corndale (Coopers Creek) 425.0 252.0 in 2010 20 133.7
Gunnedah Airport AWS 228.8 195.0 in 2010 20 82.3
Kempsey Airport AWS 374.4 200.4 in 2010 20 112.4
Tuncester (Leycester Creek) 480.0 322.0 in 2010 20 122.5
Wyong (Kulnura (Jeavons)) 188.0 175.0 in 2007 20 88.8

Highest December total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
December
Wingham (Lanark Close) 359.6 360.4 in 1947* 101.5
Broke (Harrowby) 171.6 204.2 in 1947* 69.1
Walcha (Karori) 258.9 330.9 in 1958 105.9
Mullumbimby (Fairview Farm) 534.6 594.0 in 1955* 154.1
Weabonga (Stoneleigh) 209.4 261.4 in 1959 97.1
Bundarra (Bimbadeen) 258.6 261.7 in 1959* 100.4
Gloucester Post Office 214.6 351.9 in 1962* 103.2
Krambach (Firefly Rd) 327.7 339.3 in 1962* 105.6
Bonalbo Post Office 327.1 361.9 in 1965* 123.4
Delungra (Pearsby Hall) 235.0 286.3 in 1970 85.6
Ulan Water 176.8 223.5 in 1963* 66.5
Uralla (Mihi) 202.4 218.1 in 1970 88.9
Woolbrook (Woolbrook Road) 211.4 237.8 in 1970 100.7
Glen Elgin (Glenbrook) 268.4 281.5 in 1970* 121.5
Mona Vale Golf Club 176.4 251.7 in 1970* 71.4
Cobbadah (Rocky Glen) 232.2 302.3 in 1970* 87.8
Brushgrove (Clarence St) 408.6 426.6 in 1970* 103.1
Tabulam (Muirne) 390.8 405.6 in 1975* 151.1
Glen Morrison (Millbank) 226.6 237.1 in 1970* 97.2
Kingscliff (Woram Place) 420.0 446.0 in 1970* 155.5
Brays Creek (Misty Mountain) 525.0 551.0 in 1988* 164.9
Hunter Springs (Wondecla) 235.2 261.0 in 1988* 108.4
Collaroy (Long Reef Golf Club) 121.1 210.8 in 1970* 69.7
Yamba Pilot Station 253.4 262.6 in 1991 116.4
Belrose (Evelyn Place) 219.4 221.8 in 1992 93.3
Colo Heights (Mountain Pines) 189.4 207.4 in 1992 94.0
Harwood Island (Harwood Sugar Mill) 302.3 306.4 in 1991* 110.6
Moruya Heads Pilot Station 247.6 248.4 in 1992 75.4
Putty Tea Rooms 178.8 224.1 in 1962* 82.2
Tabulam Post Office 229.8 236.4 in 1991* 117.4
Faulconbridge (St Georges Crescent) 185.8 235.1 in 1992* 99.2
Springwood (Valley Heights) 210.8 302.2 in 1991* 101.8
Dundee (Wattle Dale) 190.8 193.2 in 1994 117.1
Stroud Post Office 207.8 301.9 in 1992* 102.2
Avalon Beach (Avalon (Palmgrove Rd)) 188.6 212.2 in 1992* 89.5
Elderslie 151.0 179.4 in 1992* 70.9
Ivanhoe (Kilfera) 37.0 42.1 in 1947* 16.4
Craven (Longview) 263.4 350.6 in 1992* 102.5
Tibooburra (Fort Grey) 31.5 48.6 in 1992* 13.7
Urbenville 249.4 333.8 in 1991* 123.1

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported




Record highest December temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Cobar MO 46.7 on the 1st 45.7 on the 21st in 2019 59 32.8
Cobar Airport AWS 46.1 on the 1st 45.8 on the 20th in 2018 28 33.5
Walgett Airport AWS 46.6 on the 1st 44.8 on the 21st in 2019 28 34.7
Armidale Airport AWS 36.5 on the 2nd 36.4 on the 21st in 2019 27 25.1
Lightning Ridge Visitor Information Cent 45.8 on the 1st 44.7 on the 22nd in 2019 24 34.8
Bourke Airport AWS 47.6 on the 1st 47.3 on the 20th in 2018 23 35.7
Gunnedah Airport AWS 43.7 on the 2nd 42.8 on the 20th in 2019 20 32.6
Narrabri Airport AWS 44.4 on the 2nd 43.1 on the 29th in 2013 20 33.3



Record lowest December daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Cobar MO 17.8 on the 21st 18.4 on the 26th in 1968 59 32.8
Cobar Airport AWS 17.8 on the 21st 20.6 on the 25th in 2013 28 33.5
Coonamble Airport AWS 19.6 on the 21st 20.0 on the 23rd in 1999 24 33.4
Bourke Airport AWS 19.0 on the 21st = 19.0 on the 22nd in 1999 23 35.7



Record highest December daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Barraba (Clifton Lane) 26.1 on the 2nd 25.6 on the 24th in 1994 55 14.7
Inverell Research Centre 24.2 on the 2nd 23.3 on the 31st in 1965 55 15.1
Woolbrook (Woolbrook Road) 21.0 on the 2nd 20.7 on the 28th in 1990 49 10.9
Glen Innes Ag Research Stn 19.5 on the 2nd 19.3 on the 27th in 2003 45 12.2
Tamworth Airport AWS 27.2 on the 2nd 26.0 on the 22nd in 2003 29 15.7
Moree Aero 27.5 on the 2nd 27.4 on the 11th in 2019 26 18.7
Glen Innes Airport AWS 18.5 on the 20th 18.4 on the 27th in 2003 25 11.4
Armidale (Tree Group Nursery) 20.0 on the 2nd 19.6 on the 4th in 2001 24 11.4
Narrabri Airport AWS 29.4 on the 2nd 28.7 on the 22nd in 2003 20 18.6



Record lowest December temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Deniliquin Airport AWS 4.6 on the 8th 5.0 on the 6th in 2013 24 14.4



Record highest December mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Murwillumbah (Bray Park) 21.1 20.4 in 1997 44 18.5
Ballina Airport AWS 20.5 20.2 in 1997 28 18.3
Grafton Research Stn 19.6 19.4 in 2005 27 18.0
Inverell (Raglan St) 16.3 16.2 in 2018 25 14.0
Glen Innes Airport AWS 13.2 13.1 in 2014 24 11.4
Armidale (Tree Group Nursery) 13.3 13.0 in 2014 23 11.4
Taree Airport AWS 18.2 = 18.2 in 2012 23 16.8

Highest December mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
December
Port Macquarie Airport AWS (Comparison) 18.6 18.8 in 1997 16.9
Tenterfield (Federation Park) 14.9 =14.9 in 1997* 13.0

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported




Summary statistics for December 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2020
Diff
from
average
Highest for
December
2020
Mean for
December
2020
Diff
from
average
Lowest for
December
2020
Total for
December
2020
Average
for
December
Rank of
December
2020
Fraction of
December
average
Western (Far Northwest) (district 46)
Fowlers Gap AWS 32.3 -2.0 39.4 27th 18.2 -1.6 11.8 8th 8.2 21.4 average 38%
Smithville AWS 34.5   43.3 5th 19.9   12.0 9th 13.8
Tibooburra Airport 34.1 -1.3 44.4 5th 21.6 -0.1 14.7 8th 0.2 14.2 v low 1%
Wanaaring (Borrona Downs AWS) 34.2   44.7 5th 22.0   14.6 8th 32.2
White Cliffs AWS 33.5 -1.5 43.2 5th 20.0 -1.0 12.8 8th 16.4 22.6 average 73%
Western (Lower Darling) (district 47)
Broken Hill Airport AWS 30.3 -1.4 38.3 15th 16.7 -0.7 9.5 8th 21.8 21.3 average 102%
Lake Victoria Storage 30.0 -0.5 39.5 27th 14.4 -0.9 9.0 29th 7.5 20.4 average 37%
Menindee Post Office 32.0 -0.9 39.0 15th 16.5 -0.4 10.5 6th 20.1 21.8 average 92%
Mulurulu AWS 31.4   38.4 27th 15.8   9.0 9th 23.6
Pooncarie Mail Agency 32.0 -1.8 39.8 15th 15.7 -1.3 10.0 8th 11.6 21.2 average 55%
Western (Upper Darling) (district 48)
Bourke Airport AWS 34.8 -0.9 47.6 1st 21.2 +0.6 14.2 9th 47.4 33.9 high 140%
Brewarrina Hospital 34.2 -0.9 46.3 1st 20.3 +1.3 12.2 9th 42.1 38.5 average 109%
Cobar Airport AWS 32.3 -1.2 46.1 1st 17.9 -0.3 10.2 9th 43.8 25.5 high 172%
Cobar MO 32.4 -0.4 46.7 1st 18.2 -0.7 11.9 8th 30.4 34.8 average 87%
Lightning Ridge Visitor Information Cent 35.0 +0.2 45.8 1st 21.1 +0.7 13.0 9th 79.6 55.9 high 142%
Noona AWS 32.2   44.9 1st 18.7   12.2 8th 30.4
Wanaaring (Delta AWS) 34.4   46.9 1st 21.1   14.7 23rd 59.4
Wanaaring Post Office 34.5 -0.9 45.7 1st 21.0 +1.0 13.8 9th 63.0 28.8 high 219%
Western (Southwest Plains) (district 49)
Balranald (RSL) 30.1 -0.9 39.1 27th 14.5 -0.4 7.4 8th 21.6 26.0 average 83%
Euabalong (Mount Hope AWS) 31.2   43.9 1st 14.6   6.8 9th 21.8
Ivanhoe Aerodrome AWS 31.5 -2.0 39.5 1st 17.1 -1.3 10.4 8th 32.6 18.4 high 177%
Central Western Plains (South) (district 50)
Condobolin Airport AWS 31.5 -0.7 43.6 1st 14.2 -2.3 6.4 9th 27.4 36.2 average 76%
West Wyalong Airport AWS 30.7 -0.7 41.2 1st 13.6 -2.0 7.2 8th 27.2 48.7 average 56%
Central Western Plains (North) (district 51)
Coonamble Airport AWS 32.5 -0.9 43.3 1st 18.4 +0.2 12.0 9th 107.0 64.0 high 167%
Girilambone (Okeh) AWS 32.7   46.2 1st 19.2   13.7 8th 49.8
Trangie Research Station AWS 32.0 0.0 44.5 1st 16.9 +0.2 9.3 9th 76.8 42.6 high 180%
Walgett (Brewon AWS) 34.6   48.0 1st 19.6   10.4 9th 79.0
Northwest Plains (West) (district 52)
Mungindi Post Office 35.0 +0.4 45.9 1st 20.8 +1.8 11.6 9th 90.8 51.6 high 176%
Walgett Airport AWS 34.4 -0.3 46.6 1st 19.2 +0.6 9.4 9th 73.6 48.5 high 152%
Northwest Plains (East) (district 53)
Moree Aero 32.2 -0.8 43.7 2nd 20.0 +1.3 10.4 9th 139.8 67.2 high 208%
Northwest Slopes (North) (district 54)
Barraba (Clifton Lane) 29.5 -1.3 41.0 2nd 16.2 +1.5 6.1 9th 198.0 77.7 v high 255%
Narrabri Airport AWS 32.1 -1.2 44.4 2nd 18.9 +0.3 11.1 9th 166.0 69.7 v high 238%
Northwest Slopes (South) (district 55)
Gunnedah Airport AWS 31.5 -1.1 43.7 2nd 17.4 +0.9 7.8 9th 228.8 82.3 highest 278%
Quirindi Post Office 29.7 -1.6 40.8 1st     9.0 9th 125.0 80.2 high 156%
Tamworth Airport AWS 30.4 -0.4 41.8 2nd 17.0 +1.3 8.7 9th 223.6 80.7 highest 277%
Woolbrook (Woolbrook Road) 25.8 -0.6 37.6 2nd 14.0 +3.1 4.5 9th 211.4 100.7 v high 210%
Northern Tablelands (West) (district 56)
Armidale (Tree Group Nursery) 24.8 -1.0 36.4 2nd 13.3 +1.9 3.3 9th 193.6 89.1 highest 217%
Armidale Airport AWS 24.1 -1.0 36.5 2nd 13.4 +1.3 5.1 9th 256.8 100.8 highest 255%
Glen Innes Airport AWS 25.0 -0.3 36.2 2nd 13.2 +1.8 2.1 9th 174.2 111.2 v high 157%
Guyra Hospital 22.5 -0.4 33.5 2nd 12.1 +1.2 4.4 9th 204.4 110.1 v high 186%
Inverell (Raglan St) 28.7 -0.6 39.2 2nd 16.3 +2.3 5.2 9th 157.5 113.2 high 139%
Inverell Research Centre 28.2 -0.3 39.6 2nd 16.9 +1.8 8.4 9th 166.6 98.5 v high 169%
Tenterfield (Federation Park) 26.1 -0.5 35.8 2nd 14.9 +1.9 8.4 10th 161.1 105.3 high 153%
Northern Tablelands (East) (district 57)
Tabulam (Muirne) 27.3 +0.3 36.4 1st 17.0 +0.8 10.4 12th 390.8 151.1 v high 259%
Upper North Coast (district 58)
Ballina Airport AWS 27.8 +0.2 32.2 22nd 20.5 +2.2 15.7 9th 382.2 140.9 v high 271%
Byron Bay (Cape Byron AWS) 26.9 +0.2 31.3 1st 21.0 +1.0 16.1 12th 253.0 128.0 high 198%
Casino Airport AWS 31.2 +1.1 42.3 6th 19.5 +1.7 14.2 9th 438.6 132.2 highest 332%
Evans Head RAAF Bombing Range AWS 28.9 +0.8 36.5 2nd 19.8 +1.1 15.7 9th 415.6 104.9 highest 396%
Grafton Airport AWS 29.5 +0.2 38.3 6th 19.1 +1.6 12.0 9th 379.2 131.7 highest 288%
Grafton Research Stn 30.0 0.0 37.8 6th 19.6 +1.6 14.0 9th 513.0 107.6 highest 477%
Lismore Airport AWS 29.9 +0.2 38.6 6th 19.2 +1.9 13.3 9th 565.6 139.0 v high 407%
Murwillumbah (Bray Park) 29.5 +0.3 36.8 6th 21.1 +2.6 16.5 10th 638.7 175.8 highest 363%
Yamba Pilot Station 27.0 +1.0 31.5 22nd 20.6 +1.4 15.6 9th 253.4 116.4 v high 218%
Lower North Coast (district 59)
Coffs Harbour Airport 26.9   32.1 2nd 19.7   14.7 9th 476.4
Dorrigo (Old Coramba Rd) 23.9 -0.1 31.4 2nd 15.1 +1.2 8.1 9th 771.7 200.4 highest 385%
Kempsey Airport AWS 27.3 -1.2 34.2 18th 18.1 +1.9 10.6 9th 374.4 112.4 highest 333%
South West Rocks (Smoky Cape Lighthouse) 26.8 +0.8 30.4 6th 19.5 +1.0 14.8 13th 513.4 121.9 highest 421%
Manning (district 60)
Port Macquarie Airport AWS (Comparison) 26.5 -0.4 31.9 6th 18.6 +1.7 9.9 9th 407.0 120.6 highest 337%
Port Maquarie (Port Macquarie Airport Aw 26.6   31.7 6th 18.5   9.6 9th 437.0
Taree Airport AWS 26.9 -1.0 34.7 5th 18.2 +1.4 12.5 9th 380.8 90.8 highest 419%
Yarras (Mount Seaview) 27.3 -1.4 36.6 2nd 17.7 +1.4 12.0 10th 812.6 196.2 highest 414%
Hunter (district 61)
Cessnock Airport AWS 27.0 -2.2 36.2 1st 16.8 +1.7 8.8 9th 170.4 80.4 v high 212%
Cooranbong (Lake Macquarie AWS) 26.2 -1.4 33.3 18th 16.9 +0.9 10.8 9th 220.6 87.6 v high 252%
Gosford AWS 25.1   32.8 18th 17.5   12.2 9th 197.6
Maitland Airport AWS 27.4   36.1 1st 17.0   9.8 9th 155.6
Mangrove Mountain AWS 25.0 -1.5 35.9 1st 15.7 +0.3 10.0 9th 211.2 90.8 v high 233%
Merriwa (Roscommon) 27.5 -2.5 40.1 1st 14.7 0.0 6.5 9th 149.2 73.5 high 203%
Murrurundi (Haydon Street) 27.7   38.6 1st 15.2   5.8 9th 149.4
Murrurundi Gap AWS 24.9 -1.9 35.4 1st 14.4 -0.6 7.9 9th 120.6 85.3 high 141%
Nelson Bay (Nelson Head) 25.3 -0.8 30.5 28th 18.8 +1.0 14.2 27th 156.6 92.6 high 169%
Newcastle Nobbys Signal Station AWS 24.4 -0.5 31.8 18th 19.1 +1.0 15.1 9th
Newcastle University 27.0 -1.1 32.8 27th 18.1 +0.2 12.4 9th 183.4 71.6 highest 256%
Norah Head AWS 25.3 +0.2 31.7 6th 18.7 +0.2 15.0 9th 172.8 69.4 highest 249%
Paterson (Tocal AWS) 27.4 -1.9 36.4 1st 17.2 +0.9 10.5 9th 118.0 80.9 high 146%
Scone Airport AWS 28.5 -1.9 41.2 1st 16.4 +1.0 8.2 9th 120.6 75.6 high 160%
Singleton Defence AWS 27.0   36.3 1st 17.2   11.0 9th 158.8
Williamtown RAAF 26.5 -0.9 33.4 27th 18.1 +1.5 13.0 9th 156.2 78.6 high 199%
Central Tablelands (North) (district 62)
Mudgee Airport AWS 27.5 -1.5 40.0 1st 14.8 +1.0 5.4 9th 113.0 79.0 high 143%
Nullo Mountain AWS 20.8 -1.7 31.1 1st 11.4 -0.6 5.2 8th 155.4 88.8 v high 175%
Central Tablelands (South) (district 63)
Bathurst Airport AWS 26.0 -0.9 36.9 1st 12.0 +0.2 4.0 9th 74.8 72.0 average 104%
Katoomba (Farnells Rd) 20.5 -2.0 34.2 1st 10.6 -1.2 5.4 10th 204.8 121.5 high 169%
Lithgow (Cooerwull) 22.4 -2.3 34.4 1st 12.3 +0.9 3.5 9th 117.1 78.7 high 149%
Marrangaroo (Defence) 22.1   33.9 1st 11.6   3.5 9th 87.8
Mount Boyce AWS 21.1 -1.7 33.6 1st 11.3 -0.4 5.0 8th 159.8 84.3 v high 190%
Oberon (Albion St) 22.4 -1.1 32.5 1st 8.9 -0.2 0.9 9th 128.6 74.5 high 173%
Orange Airport AWS 23.9 -1.1 33.4 1st 10.2 -0.4 1.9 9th 70.2 86.3 average 81%
Springwood (Valley Heights) 25.1 -2.3 34.5 1st 15.1 -0.4 10.9 9th 210.8 101.8 high 207%
Central Western Slopes (North) (district 64)
Coonabarabran (Showgrounds) 29.3 -1.3 39.4 1st 15.2 +1.9 6.0 9th 170.1 70.6 v high 241%
Coonabarabran Airport AWS 28.3 -1.2 38.8 1st 15.5 -0.8 9.4 12th 161.0 88.7 high 182%
Dunedoo Post Office 29.1 -1.9 42.5 1st 15.0 -0.2 8.3 13th 134.2 62.8 v high 214%
Central Western Slopes (South) (district 65)
Cowra Airport AWS 30.4 -0.7 41.3 1st 13.8 -0.8 6.1 9th 22.4 62.8 low 36%
Dubbo Airport AWS 30.6 -1.0 42.8 1st 15.8 -0.2 8.2 9th 120.6 61.3 high 197%
Forbes Airport AWS 31.1 -0.8 43.1 1st 14.0 -1.4 6.5 9th 27.8 51.3 average 54%
Parkes Airport AWS 29.7 -1.6 42.4 1st 13.8 -1.0 4.7 9th 70.4 53.5 high 132%
Wellington (D&J Rural) 30.1 -1.5 41.9 1st 15.6 +0.4 6.5 9th 90.1 56.4 high 160%
Metropolitan (East) (district 66)
Bankstown Airport AWS 27.0 -0.6 35.1 4th 17.4 +0.7 13.0 9th        
Canterbury Racecourse AWS 25.8 -0.9 33.2 4th 17.1 +0.2 12.3 9th 81.6 64.1 average 127%
Holsworthy Aerodrome AWS 26.4   34.6 4th 16.4   10.7 9th 74.6
Parramatta North (Masons Drive) 26.4 -1.2 34.5 4th 16.4 +0.1 11.5 23rd 111.2 72.8 high 153%
Sydney (Observatory Hill) 26.1   30.8 7th 18.1   14.4 9th 119.0
Sydney Airport AMO 26.2 +0.3 34.0 18th 18.4 +0.8 15.0 9th 72.0 72.7 average 99%
Sydney Harbour (Wedding Cake West) 23.5 -0.1 30.9 18th 18.7 -0.2 16.0 8th
Sydney Olympic Park AWS (Archery Centre) 26.6   34.7 4th 17.4   12.8 9th 96.2 79.2 high 121%
Terrey Hills AWS 24.0 -1.7 30.3 18th 16.5 -0.2 12.0 9th 243.0 89.1 v high 273%
Metropolitan (West) (district 67)
Badgerys Creek AWS 27.0 -1.7 34.4 4th 15.9 +0.4 9.9 9th 89.8 55.0 average 163%
Horsley Park Equestrian Centre AWS 26.6 -1.9 35.0 1st 16.2 0.0 11.0 9th 113.6 65.7 high 173%
Penrith Lakes AWS 28.0 -1.8 38.5 1st 16.8 -0.3 11.7 9th 120.2 63.1 v high 190%
Richmond RAAF 27.1 -2.0 38.1 1st 16.5 +0.3 10.8 9th 122.2 69.3 v high 176%
Illawarra (district 68)
Albion Park (Shellharbour Airport) 24.7 -1.0 31.5 18th 16.3 +1.0 9.9 7th 75.6 63.6 high 119%
Bellambi AWS 23.4 -0.6 29.9 18th 17.2 -0.4 13.9 8th 136.2 74.6 v high 183%
Camden Airport AWS 27.0 -1.7 34.9 1st 15.8 +0.5 9.0 9th 79.4 57.1 high 139%
Campbelltown (Mount Annan) 26.9 -1.6 34.4 17th 15.3 0.0 8.9 9th 69.8 58.1 average 120%
High Range AWS (Wanganderry) 21.6   31.6 1st 11.9   5.7 8th 128.6
Holsworthy Defence AWS 25.9   34.6 4th 15.7   10.9 9th 88.2
Jervis Bay (Point Perpendicular) 23.1 -0.6 29.8 1st 17.2 +0.2 13.9 8th 76.4 78.6 average 97%
Jervis Bay NSW (Jervis Bay Airfield AWS) 23.7   30.3 18th 16.2   12.6 8th 100.4
Kiama (Bombo Headland) 23.2 -0.7 29.3 18th 17.2 -0.1 14.1 8th 80.2 73.6 average 109%
Moss Vale AWS 22.6 -1.8 31.2 17th 12.2 -0.1 5.0 9th 142.8 57.0 v high 251%
Nowra RAN Air Station AWS 24.9 -1.4 33.7 4th 15.2 +0.2 9.2 7th 76.6 73.6 average 104%
South Coast (district 69)
Bega AWS 24.7 -0.4 34.2 1st 13.9 +0.5 5.8 11th 72.6 63.1 high 115%
Braidwood Racecourse AWS 23.4 -1.4 32.5 1st 10.8 +0.2 3.0 8th 36.4 62.8 average 58%
Green Cape AWS 21.8 -0.4 25.4 20th 16.0 +0.2 11.6 8th 70.2 46.8 high 150%
Merimbula Airport AWS 23.2 -0.2 27.1 22nd 14.2 +0.4 8.2 8th 115.8 62.2 high 186%
Montague Island Lighthouse 21.6 -0.2 26.0 7th 16.7 +0.6 12.8 8th 138.2 66.8 v high 207%
Moruya Airport AWS 23.4 -0.6 28.7 7th 15.1 +0.8 9.2 8th 223.4 77.1 v high 290%
Moruya Heads Pilot Station 22.4 -0.4 27.0 5th 16.0 +1.3 11.2 8th 247.6 75.4 v high 328%
Narooma (Marine Rescue) 22.1 0.0 26.0 17th 15.2 0.0 10.5 8th 107.4 73.9 high 145%
Nerriga AWS 23.4   34.6 1st 12.3   6.2 8th 47.2
Ulladulla AWS 23.3 +0.2 33.4 4th 16.5 +0.5 12.2 8th 62.6 70.7 average 89%
Southern Tablelands (Goulburn-Monaro) (district 70)
Bombala (Therry Street) 23.0 -1.0 33.7 1st 9.4 +0.4 1.5 11th 34.8 63.7 low 55%
Bombala AWS 22.4 -0.9 33.8 1st 8.8 -0.3 0.7 12th 63.6 54.6 average 116%
Canberra Airport 25.4 -2.4 33.1 1st 11.5 -0.8 3.9 8th 41.4 75.0 average 55%
Cooma Airport AWS 23.1 -1.2 30.8 1st 7.9 -0.8 -0.2 9th 79.8 52.9 high 151%
Cooma Visitors Centre 24.5 -0.8 33.1 1st 9.1 -0.1 0.5 11th 41.6 55.1 average 75%
Goulburn Airport AWS 24.2 -1.9 34.4 1st 10.9 +0.1 1.8 9th 37.8 54.8 average 69%
Goulburn TAFE 24.2 -1.9 34.7 1st 12.1 +0.1 5.7 9th 41.8 61.0 average 69%
Mount Ginini AWS 16.2 -2.0 23.8 1st 5.8 -1.8 -1.0 8th 104.2 104.2 average 100%
Taralga Post Office 22.8 -1.8 36.0 1st 10.4 +0.5 1.0 9th 65.8 66.2 average 99%
Tuggeranong (Isabella Plains) AWS 25.3 -2.1 33.6 1st 12.1 -0.3 4.8 8th 56.0 66.8 average 84%
Southern Tablelands (Snowy Mountains) (district 71)
Perisher Valley AWS 16.0 -1.3 22.0 1st 3.4 -2.0 -6.0 11th 107.8 158.6 low 68%
Thredbo AWS 13.6 -0.8 19.6 14th 3.9 -1.1 -3.2 11th 94.6 112.0 average 84%
Thredbo Village 18.9 -0.5 25.9 1st 5.8 +0.3 -2.0 11th 106.6 122.1 average 87%
Southwest Slopes (South) (district 72)
Albury Airport AWS 29.0 -0.6 36.4 27th 12.9 -1.2 7.2 8th 73.8 42.5 high 174%
Cabramurra SMHEA AWS 17.7 -1.0 23.9 1st 7.8 -1.4 0.7 8th 102.6 88.3 average 116%
Hume Reservoir 28.5 -0.2 35.5 27th 13.4 -1.1 6.9 8th 49.0 49.7 average 99%
Khancoban AWS 28.0 -0.5 33.5 27th 10.5 -0.9 5.1 11th 38.8 73.6 low 53%
Tumbarumba Post Office 26.2 0.0 32.0 1st 9.2 -0.6 3.8 9th 64.0 70.8 average 90%
Wagga Wagga AMO 28.8 -0.8 36.8 1st 13.1 -0.9 6.7 9th 61.8 46.3 high 133%
Southwest Slopes (North) (district 73)
Burrinjuck Dam 27.1 -0.6 33.8 1st 14.2 +0.5 8.0 9th 66.0 63.3 average 104%
Cootamundra Airport 28.3 -1.2 37.5 1st 12.1 -1.0 4.3 9th 37.0 52.8 average 70%
Grenfell (Manganese Rd) 28.7 -1.3 39.6 1st 13.0 -1.5 6.2 9th 62.2 55.4 average 112%
Gundagai (Nangus Rd) 28.8 -1.2 37.2 1st 13.5 -0.8 6.5 9th
Temora Airport 30.3 -0.8 41.7 1st 12.7 -1.6 4.8 9th 30.6 42.8 average 71%
Young Airport 28.6 -0.9 38.9 1st 11.7 -0.4 4.2 9th 37.2 56.3 average 66%
Riverina (East) (district 74)
Corowa Airport 29.3 -0.9 38.0 27th 11.1 -2.6 6.4 8th 20.6 40.6 average 51%
Deniliquin Airport AWS 29.9 -0.8 39.8 27th 12.3 -2.1 4.6 8th 8.2 28.6 low 29%
Kapooka (Defence) 29.4   38.9 1st 13.0   4.6 8th 62.4
Narrandera Airport AWS 31.2 +0.1 38.9 1st 13.6 -1.5 6.9 9th 18.6 36.4 average 51%
Tocumwal Airport 29.8 +0.1 39.0 27th 13.0 -1.2 8.5 8th 14.7 34.3 average 43%
Yanco Agricultural Institute 31.4 +0.7 39.1 27th 14.6 -1.7 7.2 8th 12.2 30.4 average 40%
Riverina (West) (district 75)
Griffith Airport AWS 30.9 -0.2 38.9 27th 14.6 -0.8 6.8 8th 10.0 32.8 low 30%
Hay Airport AWS 31.2 -1.1 40.3 27th 13.6 -2.5 6.2 8th 15.2 33.2 low 46%
Hillston Airport 31.8 +0.1 41.0 1st 15.5 -1.0 8.3 8th 13.8 30.2 average 46%
Lake Cargelligo Airport 31.0 -1.5 44.1 1st 16.3 -0.5 10.2 8th 30.8 36.8 average 84%
Note: From 2017, information about Lord Howe and Norfolk Islands can be found in the climate summary for the Remote Islands and Antarctica

Notes

The Monthly climate summary lists 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. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

This statement has been prepared based on information available at 5 pm on Thursday 7 January 2021. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

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.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

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