Monday, 2 September 2019 - Monthly Climate Summary for Victoria - Product code IDCKGC16R0
Victoria in August 2019: cold days and nights
Rainfall in August was below average in northern and much of eastern Victoria; it was wetter than average in parts of East Central and West Gippsland districts. Daytime temperatures were cooler than average in much of western and central Victoria, while night-time temperatures were below average to very much below average in the north of the State. Overall, it was Victoria's driest August since 2015 and the coolest August since 2010.
Below average rainfall in north and east
- Rainfall in August was below average in northern and much of eastern Victoria, as well as in the southwest
- State-wide, August rainfall was around 29% below average, the driest August since 2015
- It was wetter than average only in parts of East Central and West Gippsland districts, with a large area in West Gippsland receiving nearly double its mean total rainfall for August
- Morwell (Latrobe Valley Airport) in Gippsland had its highest total August rainfall on record, while Jindivick and Erica had their highest total August rainfall for at least 20 years
- Much of the August precipitation fell between the 8th and 11th, due to a complex low pressure system which moved south of Victoria, followed by very cold polar air
- Highest daily rainfall of 52.6 mm was recorded at Falls Creek (Rocky Valley) on the 8th
- With 298.8 mm received during the month, Mount Baw Baw was the wettest place in Victoria
- Year-to-date rainfall was below average in most of the State, and very much below average in the far northwest and scattered pockets in the central and southeastern Victoria
Below average temperatures
- Both daytime and night-time temperatures tended cooler than average during August
- Daytime temperatures were below average in much of western and central Victoria, while night-time temperatures were cooler than average in the north
- Most of the North and Northeast districts experienced nights 1 °C to 2 °C cooler than average. Rutherglen in the State's northeast equalled its coldest August on record (7.1 °C in 1994) in 104 years of observations.
- State-wide, mean daytime and night-time temperatures were 0.36 °C and 0.53 °C below average for August respectively
- Coldest days during the month at most sites were on the 8th, 9th and 10th, in a polar air following the vigorous cold front
- The coldest daytime temperature recorded in Victoria in August was ?4.4 °C at Mount Hotham on the 10th
- Several sites in north and central Victoria had either their lowest August mean temperature on record or lowest August mean temperature since at least 1997
- Year-to-date mean temperature was very much above average across most of the State and highest on record in parts of southern Victoria.
- State-wide, January to August mean temperature was the 3rd warmest on record
Strong winds and snow
- Sustained winds of 90-110 km/h were experienced during the 9th over the parts of West and South Gippsland, and coastal South West, with gusts of 128 km/h recorded at Wilsons Promontory, 120 km/h at Cape Otway
- Victorian State Emergency Services had received more than 500 calls, mostly due to fallen trees and some building damage
- Widespread heavy snow fell in the Alpine areas and to the lower levels, including Mt Macedon and Dandenong Ranges, on 10 and 11 August; this was the most widespread snowfall since 2008
- Strong winds, particularly in the eastern Victoria, followed the passage of a vigorous cold front on the 22nd; Wilsons Promontory reported the strongest wind gust in the State this August, 143 km/h
Further information
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
Extremes Maps Records Summaries Important notes the top
Extremes in August 2019 | |
---|---|
Hottest day | 24.2 °C at Ouyen (Post Office) on the 24th |
Warmest days on average | 17.2 °C at Mildura Airport |
Coolest days on average | 0.7 °C at Mount Hotham |
Coldest day | -4.4 °C at Mount Hotham on the 10th |
Coldest night | -7.4 °C at Mount Hotham on the 11th, 12th and 29th |
Coolest nights on average | -4.4 °C at Mount Hotham |
Warmest nights on average | 8.6 °C at Wilsons Promontory Lighthouse |
Warmest night | 12.4 °C at Wilsons Promontory Lighthouse on the 16th |
Warmest on average overall | 11.6 °C at Gabo Island Lighthouse |
Coolest on average overall | -1.8 °C at Mount Hotham |
Wettest overall | 298.8 mm at Mount Baw Baw |
Wettest day | 52.6 mm at Falls Creek (Rocky Valley) on the 8th |
Strongest wind gust | 143 km/h at Wilsons Promontory Lighthouse on the 22nd |
Extremes Maps Records Summaries Important notes the top
Maps | |||
---|---|---|---|
Observed | Anomaly | Decile rank | |
Total rainfall |
|||
Mean daily maximum temperatures |
|||
Mean daily minimum temperatures |
Click on a map to show it full size in a pop-up window
Record highest August total rainfall | |||||
---|---|---|---|---|---|
New record (mm) |
Old record |
Years of record |
Average for August |
||
Morwell (Latrobe Valley Airport) | 137.2 | 115.2 | in 1990 | 35 | 65.7 |
Highest August total rainfall for at least 20 years | |||||
---|---|---|---|---|---|
Observed (mm) |
Most recent higher |
Average for August |
|||
Jindivick | 172.3 | 210.6 | in 1975 | 103.0 | |
Erica (Parkers Corner) | 148.0 | 150.5 | in 1991* | 105.0 |
* note: there are gaps in the historical record
at this site, so it is possible a higher value has gone unreported
Record lowest August daily maximum temperature | ||||||
---|---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for August |
|||
Aireys Inlet | 8.3 | on the 9th | = 8.3 | on the 2nd in 1995 | 28 | 14.4 |
Record lowest August mean daily minimum temperature | |||||
---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for August |
||
Eildon Fire Tower | 2.9 | = 2.9 | in 2018 | 23 | 4.2 |
Mount Nowa Nowa | 5.3 | 5.4 | in 2008 | 23 | 6.3 |
Lowest August mean daily minimum temperature for at least 20 years | |||||
---|---|---|---|---|---|
Observed (°C) |
Most recent lower |
Average for August |
|||
Yarrawonga | 1.8 | 0.9 | in 1994 | 3.7 | |
Gelantipy | 1.7 | =1.7 | in 1997 | 2.8 |
Record lowest August mean temperature | |||||
---|---|---|---|---|---|
New record (°C) |
Old record |
Years of record |
Average for August |
||
Rutherglen Research | 7.1 | = 7.1 | in 1994 | 104 | 8.4 |
Deniliquin Airport AWS | 8.9 | = 8.9 | in 2008 | 22 | 10.1 |
Swan Hill Aerodrome | 9.1 | 9.3 | in 2008 | 22 | 10.4 |
Lowest August mean temperature for at least 20 years | |||||
---|---|---|---|---|---|
Observed (°C) |
Most recent lower |
Average for August |
|||
Albury Airport AWS | 8.1 | 8.0 | in 1994 | 9.2 | |
Mangalore Airport | 7.9 | 7.8 | in 1994 | 9.0 | |
Tatura Inst Sustainable Ag | 8.3 | 7.8 | in 1997 | 9.3 | |
Wangaratta Aero | 7.6 | =7.6 | in 1997 | 8.7 |
Extremes Maps Records Summaries Important notes the top
Summary statistics for August 2019 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Maximum temperatures (°C) |
Minimum temperatures (°C) |
Rainfall (millimetres) |
||||||||||
Mean for August 2019 |
Diff from average |
Highest for August 2019 |
Mean for August 2019 |
Diff from average |
Lowest for August 2019 |
Total for August 2019 |
Average for August |
Rank of August 2019 |
Fraction of August average |
|||
Southwest Slopes (South) (district 72) | ||||||||||||
Albury Airport AWS | 14.1 | -0.8 | 18.0 | 18th | 2.2 | -1.3 | -1.5 | 12th | 33.6 | 65.2 | low | 52% |
Riverina (East) (district 74) | ||||||||||||
Deniliquin Airport AWS | 15.4 | -0.8 | 21.1 | 18th | 2.4 | -1.7 | -1.7 | 23rd | 9.6 | 32.6 | low | 29% |
North Mallee (district 76) | ||||||||||||
Mildura Airport | 17.2 | -0.1 | 24.1 | 24th | 4.1 | -1.2 | -0.4 | 30th | 5.4 | 25.2 | low | 21% |
Ouyen (Post Office) | 16.6 | -0.5 | 24.2 | 24th | 4.4 | -0.7 | 0.7 | 30th | 8.8 | 32.0 | low | 28% |
Walpeup Research | 16.1 | -0.3 | 23.6 | 24th | 4.2 | -1.2 | -0.8 | 29th | 17.4 | 34.2 | low | 51% |
South Mallee (district 77) | ||||||||||||
Hopetoun Airport | 15.3 | -1.5 | 22.8 | 24th | 2.6 | -0.9 | -2.7 | 26th | 18.0 | 25.0 | average | 72% |
Swan Hill Aerodrome | 15.4 | -1.3 | 21.9 | 24th | 2.9 | -1.1 | -1.8 | 23rd | 15.2 | 26.6 | average | 57% |
North Wimmera (district 78) | ||||||||||||
Kellalac (Warracknabeal Airport) | 14.6 | 20.8 | 24th | 3.2 | -1.4 | 25th | 33.0 | |||||
Nhill Aerodrome | 14.3 | -1.2 | 20.9 | 31st | 4.2 | -0.5 | -1.0 | 29th | 50.0 | 43.7 | average | 114% |
Warracknabeal Museum | 14.6 | -1.0 | 21.0 | 24th | 3.1 | -1.3 | -1.0 | 17th | 34.7 | 43.2 | average | 80% |
South Wimmera (district 79) | ||||||||||||
Edenhope Airport | 13.7 | -1.0 | 20.2 | 31st | 4.5 | -0.9 | -0.7 | 17th | 43.6 | 68.4 | low | 64% |
Grampians (Mount William) | 5.0 | -0.9 | 10.0 | 31st | 0.2 | -0.9 | -2.6 | 19th | 124.8 | 155.3 | average | 80% |
Horsham Aerodrome | 14.2 | -0.9 | 20.0 | 31st | 3.0 | -0.2 | -2.5 | 17th | 35.8 | 39.1 | average | 92% |
Kanagulk | 13.3 | -0.9 | 19.3 | 31st | 3.6 | -1.0 | -2.7 | 30th | 58.6 | 67.1 | average | 87% |
Longerenong | 13.9 | -0.9 | 19.6 | 24th | 3.1 | -0.9 | -2.1 | 30th | 39.6 | 43.4 | average | 91% |
Pyrenees (Ben Nevis) | 7.9 | -0.5 | 13.7 | 31st | 1.8 | -0.9 | -1.6 | 11th | 68.6 | 88.1 | low | 78% |
Stawell Aerodrome | 12.8 | -1.1 | 17.5 | 31st | 3.5 | -1.1 | -1.8 | 30th | 43.4 | 54.8 | average | 79% |
Lower North (district 80) | ||||||||||||
Charlton | 14.4 | -1.2 | 21.4 | 24th | 2.8 | -1.2 | -1.5 | 17th | 30.6 | 35.0 | average | 87% |
Echuca Aerodrome | 14.5 | -0.8 | 19.9 | 24th | 3.0 | -1.7 | -2.0 | 31st | 26.5 | 42.1 | average | 63% |
Kerang | 15.4 | -0.7 | 21.5 | 24th | 3.8 | -1.1 | -0.8 | 23rd | 17.6 | 36.8 | low | 48% |
Kyabram | 14.1 | -0.8 | 18.6 | 24th | 3.0 | -0.9 | -1.1 | 30th | 28.6 | 42.5 | average | 67% |
Upper North (district 81) | ||||||||||||
Bendigo Airport | 13.6 | -0.6 | 18.6 | 24th | 2.4 | -0.4 | -1.9 | 23rd | 33.4 | 51.2 | low | 65% |
Shepparton Airport | 14.0 | -0.9 | 18.6 | 18th | 3.1 | -0.6 | -1.7 | 23rd | 25.4 | 45.1 | low | 56% |
Tatura Inst Sustainable Ag | 13.7 | -1.0 | 17.9 | 18th | 3.0 | -0.8 | -1.8 | 23rd | 28.8 | 46.6 | low | 62% |
Yarrawonga | 14.3 | -1.0 | 18.6 | 18th | 1.8 | -1.9 | -1.8 | 23rd | 17.6 | 39.3 | low | 45% |
Lower Northeast (district 82) | ||||||||||||
Benalla Airport | 13.8 | -0.7 | 18.3 | 18th | 1.4 | -2.0 | -3.0 | 3rd | 30.8 | 60.1 | low | 51% |
Corryong Airport | 13.0 | -0.9 | 17.1 | 24th | 0.5 | -1.1 | -4.0 | 23rd | 53.2 | 80.2 | low | 66% |
Dartmouth Reservoir | 13.3 | -0.1 | 17.7 | 30th | 1.9 | -0.9 | -2.0 | 24th | 68.4 | 123.0 | low | 56% |
Hunters Hill | 8.5 | -0.4 | 13.3 | 31st | 1.3 | -1.2 | -1.8 | 10th | 98.6 | 137.1 | low | 72% |
Rutherglen Research | 13.5 | -0.5 | 18.1 | 18th | 0.8 | -1.9 | -3.4 | 23rd | 20.6 | 60.2 | low | 34% |
Strathbogie | 10.8 | -0.7 | 14.2 | 30th | 1.4 | -0.9 | -3.1 | 23rd | 67.8 | 115.5 | low | 59% |
Wangaratta Aero | 13.6 | -0.9 | 18.0 | 18th | 1.5 | -1.5 | -2.3 | 23rd | 25.6 | 58.0 | low | 44% |
Upper Northeast (district 83) | ||||||||||||
Falls Creek | 2.2 | +0.3 | 7.4 | 23rd | -3.7 | -1.0 | -7.2 | 11th | 139.2 | 97.6 | high | 143% |
Mount Buller | 2.0 | 0.0 | 8.2 | 23rd | -3.5 | -1.1 | -7.1 | 29th | 111.0 | 161.6 | low | 69% |
Mount Hotham | 0.7 | +0.2 | 4.5 | 30th | -4.4 | -0.9 | -7.4 | 11th | 0 | 122.2 | lowest | 0% |
Omeo | 11.8 | -0.4 | 16.6 | 18th | 0.4 | -0.9 | -3.5 | 23rd | 35.0 | 48.4 | low | 72% |
East Gippsland (district 84) | ||||||||||||
Combienbar AWS | 12.2 | -0.5 | 19.7 | 18th | 4.0 | -1.2 | 0.4 | 23rd | 38.8 | 63.3 | low | 61% |
Gabo Island Lighthouse | 14.6 | -0.1 | 17.5 | 18th | 8.5 | 0.0 | 6.5 | 22nd | 33.0 | 71.2 | low | 46% |
Gelantipy | 10.6 | -0.5 | 17.5 | 18th | 1.7 | -1.1 | -3.0 | 23rd | 35.4 | 51.7 | average | 68% |
Lakes Entrance (Eastern Beach Road) | 15.4 | -0.7 | 23.6 | 18th | 6.3 | 0.0 | -2.0 | 24th | 25.4 | 53.2 | v low | 48% |
Mallacoota | 15.0 | -0.8 | 19.4 | 18th | 6.5 | +0.1 | 1.3 | 27th | 42.8 | 67.0 | low | 64% |
Mount Nowa Nowa | 13.7 | -0.6 | 21.1 | 18th | 5.3 | -1.0 | 2.5 | 23rd | 19.6 | 59.9 | v low | 33% |
Orbost | 15.2 | -0.8 | 23.6 | 18th | 5.9 | -0.1 | 1.4 | 24th | 22.4 | 56.7 | v low | 40% |
Point Hicks (Lighthouse) | 14.4 | -0.6 | 19.8 | 31st | 8.0 | -0.5 | 5.7 | 24th | 52.7 | 79.2 | low | 67% |
West Gippsland (district 85) | ||||||||||||
Bairnsdale Airport | 15.5 | -0.2 | 23.4 | 18th | 4.2 | -0.3 | -1.8 | 24th | 13.8 | 35.6 | v low | 39% |
Corner Inlet (Yanakie) | 13.6 | 20.9 | 18th | 6.5 | 0.5 | 30th | 102.2 | |||||
East Sale | 14.8 | -0.3 | 23.2 | 18th | 4.2 | +0.1 | -1.4 | 31st | 34.4 | 45.7 | low | 75% |
East Sale Airport | 15.0 | 22.8 | 18th | 4.3 | -1.6 | 24th | 36.0 | |||||
Morwell (Latrobe Valley Airport) | 13.9 | -0.9 | 22.4 | 18th | 4.3 | 0.0 | -1.0 | 24th | 137.2 | 65.7 | highest | 209% |
Mount Baw Baw | 2.5 | -0.4 | 9.0 | 23rd | -2.5 | -1.0 | -5.3 | 23rd | 298.8 | 168.9 | v high | 177% |
Mount Moornapa | 13.1 | -0.6 | 21.0 | 24th | 4.7 | -0.9 | 1.6 | 23rd | 23.8 | 50.6 | low | 47% |
Nilma North (Warragul) | 13.1 | 20.6 | 18th | 4.8 | -0.3 | 31st | 172.6 | |||||
Pound Creek | 13.8 | -0.7 | 20.9 | 18th | 6.8 | +0.4 | -0.3 | 30th | 136.4 | 100.4 | high | 136% |
Wilsons Promontory Lighthouse | 13.0 | +0.2 | 20.8 | 18th | 8.6 | +0.2 | 5.7 | 20th | 97.4 | 122.7 | average | 79% |
Yarram Airport | 14.3 | -0.7 | 22.6 | 18th | 4.3 | -0.7 | -2.2 | 30th | 78.2 | 52.7 | high | 148% |
East Central (district 86) | ||||||||||||
Cerberus | 13.9 | -0.7 | 19.4 | 18th | 7.1 | +0.5 | 1.1 | 30th | 111.4 | 76.4 | high | 146% |
Coldstream | 13.6 | -1.1 | 19.1 | 18th | 4.1 | -0.2 | -1.1 | 23rd | 92.8 | 70.5 | high | 132% |
Cranbourne Botanic Gardens | 13.9 | -0.7 | 19.5 | 18th | 6.5 | +0.1 | 2.7 | 11th | 121.0 | 81.7 | v high | 148% |
Essendon Airport | 14.3 | -0.1 | 18.0 | 24th | 6.2 | +0.5 | 1.6 | 30th | 58.0 | 48.0 | average | 121% |
Ferny Creek | 9.9 | 15.6 | 18th | 4.1 | 0.2 | 10th | 138.6 | |||||
Melbourne (Olympic Park) | 14.5 | 19.4 | 18th | 7.4 | 2.3 | 30th | 51.4 | |||||
Melbourne Airport | 14.1 | -0.3 | 18.0 | 18th | 5.5 | -0.4 | 0.2 | 30th | 46.8 | 43.8 | average | 107% |
Moorabbin Airport | 14.2 | -0.7 | 20.6 | 18th | 7.1 | +0.2 | 1.0 | 30th | 69.8 | 65.0 | average | 107% |
Rhyll | 13.6 | -0.7 | 18.3 | 18th | 8.4 | 0.0 | 5.4 | 30th | 137.4 | 80.3 | high | 171% |
Scoresby Research Institute | 13.9 | -0.4 | 19.5 | 18th | 6.0 | -0.3 | 0.3 | 30th | 86.8 | 79.9 | average | 109% |
Viewbank | 14.0 | -1.1 | 19.4 | 18th | 5.9 | -0.4 | -0.1 | 30th | 79.6 | 56.1 | high | 142% |
West Central (district 87) | ||||||||||||
Avalon Airport | 14.4 | -1.0 | 20.2 | 24th | 5.4 | -0.1 | -0.2 | 31st | 48.0 | 42.5 | average | 113% |
Breakwater (Geelong Racecourse) | 14.4 | 19.6 | 31st | 6.3 | 0.8 | 30th | 56.4 | |||||
Laverton RAAF | 14.3 | -0.6 | 19.6 | 24th | 6.1 | +0.5 | 0.3 | 30th | 51.2 | 43.9 | high | 117% |
Sheoaks | 12.3 | -1.0 | 16.8 | 24th | 5.1 | -0.2 | -0.7 | 30th | 45.6 | 43.8 | average | 104% |
North Central (district 88) | ||||||||||||
Castlemaine Prison | 12.2 | -1.1 | 16.6 | 31st | 2.8 | -0.8 | -1.5 | 23rd | 57.6 | 65.9 | average | 87% |
Eildon Fire Tower | 9.7 | -0.8 | 15.1 | 18th | 2.9 | -1.3 | -0.6 | 11th | 59.4 | 76.1 | low | 78% |
Lake Eildon | 13.0 | -0.7 | 17.9 | 18th | 3.4 | -0.8 | -0.7 | 23rd | 82.6 | 99.1 | average | 83% |
Mangalore Airport | 13.2 | -0.9 | 16.5 | 24th | 2.5 | -1.4 | -2.7 | 31st | 24.2 | 60.5 | low | 40% |
Maryborough | 13.3 | -0.6 | 18.8 | 24th | 3.2 | -0.7 | -1.2 | 23rd | 42.8 | 56.0 | average | 76% |
Puckapunyal Lyon Hill (Defence) | 13.2 | 17.2 | 24th | 4.3 | -0.5 | 10th | 27.8 | |||||
Puckapunyal West (Defence) | 12.5 | 16.4 | 24th | 3.8 | 0.4 | 23rd | 36.6 | |||||
Redesdale | 13.6 | 0.0 | 17.4 | 24th | 2.1 | -1.0 | -2.7 | 23rd | 41.8 | 59.8 | average | 70% |
Wallan (Kilmore Gap) | 10.0 | -0.6 | 14.0 | 30th | 3.5 | -0.7 | 0.2 | 11th | 68.2 | 61.7 | average | 111% |
Western Plains (district 89) | ||||||||||||
Ararat Prison | 12.6 | -0.4 | 16.8 | 31st | 3.9 | 0.0 | -2.8 | 30th | 72.4 | 68.6 | average | 106% |
Ballarat Aerodrome | 10.6 | -0.8 | 15.2 | 31st | 3.0 | -0.7 | -1.5 | 23rd | 75.6 | 74.0 | average | 102% |
Westmere | 12.2 | -1.1 | 16.7 | 31st | 4.1 | -0.3 | -2.7 | 30th | 55.4 | 57.9 | average | 96% |
West Coast (district 90) | ||||||||||||
Aireys Inlet | 13.9 | -0.5 | 18.9 | 31st | 6.8 | -0.6 | 3.7 | 11th | 67.0 | 66.9 | average | 100% |
Cape Nelson Lighthouse | 13.7 | -0.8 | 19.8 | 31st | 8.3 | -0.3 | 4.5 | 10th | 79.4 | 101.2 | average | 78% |
Cape Otway Lighthouse | 13.1 | -0.7 | 18.9 | 31st | 8.0 | +0.2 | 4.8 | 10th | 94.0 | 104.3 | average | 90% |
Casterton | 13.3 | -0.9 | 19.3 | 31st | 4.7 | -0.7 | -2.1 | 17th | 58.8 | 82.6 | low | 71% |
Colac (Mount Gellibrand) | 11.7 | -0.9 | 16.1 | 31st | 5.0 | -0.5 | 0.9 | 10th | 64.0 | 60.8 | average | 105% |
Dartmoor | 13.8 | -0.7 | 19.1 | 31st | 5.6 | -0.2 | 0.2 | 30th | 73.8 | 106.0 | low | 70% |
Hamilton Airport | 12.3 | -1.0 | 17.8 | 31st | 4.4 | -0.4 | -0.4 | 17th | 63.8 | 77.9 | average | 82% |
Mortlake Racecourse | 13.8 | -0.1 | 18.3 | 31st | 4.7 | -0.1 | -1.5 | 30th | 82.0 | 66.2 | high | 124% |
Port Fairy AWS | 14.3 | -0.7 | 19.4 | 31st | 7.0 | -0.3 | 1.9 | 30th | 67.6 | 87.7 | average | 77% |
Portland (Cashmore Airport) | 13.5 | -0.5 | 19.0 | 31st | 6.3 | -0.4 | 2.0 | 30th | 108.2 | 107.9 | average | 100% |
Warrnambool Airport NDB | 13.4 | -1.0 | 17.8 | 31st | 5.5 | -0.3 | -0.3 | 30th | 100.0 | 95.0 | average | 105% |
Extremes Maps Records Summaries Important notes the top
Notes
The Monthly climate summary, generally published on the first working day of each month, lists the main features of the weather in Victoria 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 7 pm on Monday 2 September 2019. 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
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence