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Victoria in September 2019: Drier than average with cool nights

Victoria in September was generally drier than average, particularly across the State's north and in areas north and west of Melbourne. Daytime temperatures were above average in the far northwest and east of the State, with nights generally very much below average for much of the north and west of the State

Generally drier than average

  • Below average to average rainfall was recorded over most of the State
  • The statewide average rainfall total was 34% below average
  • The highest daily and monthly totals were in alpine areas to the east of Melbourne
  • Rainfall in the lowest decile (lowest ten percent of records) was recorded in areas north of Melbourne and the northeast of the State
  • Victoria's January to September rainfall totals were 22% below the long-term average

Daytime temperatures close to average, with cool nights in the north and west of the State

  • September's maximum temperature was close to average throughout much of Victoria
  • Mean maximum temperatures were above average in the far north west, in the area surrounding Melbourne and across most of Gippsland and the upper east of the State
  • Mean minimum temperatures for September were below average for much the north and west of the State
  • Victorian mean maximum temperatures were 0.62 °C above average, whereas mean minimum temperatures were 0.62 °C below average
  • The State-wide mean temperature was close to average
  • Portland (Cashmore Airport) had its lowest September temperature on record
  • Some sites had their warmest September night (highest daily minimum temperature) on record
  • Victoria's mean maximum temperature for the first nine months of the year was the fourth-highest on record, with mean minimum temperatures the ninth highest

Further information

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Extremes in September 2019
Hottest day 31.9 °C at Ouyen (Post Office) on the 15th
Warmest days on average 22.3 °C at Mildura Airport
Coolest days on average 3.9 °C at Mount Hotham
Coldest day -4.0 °C at Mount Hotham on the 9th
Coldest night -7.8 °C at Mount Hotham on the 17th
Coolest nights on average -2.0 °C at Mount Hotham
Warmest nights on average 9.9 °C at Wilsons Promontory Lighthouse
Warmest night 20.3 °C at Scoresby Research Institute on the 21st
Warmest on average overall 14.6 °C at Mildura Airport
Coolest on average overall 1.0 °C at Mount Hotham
Wettest overall 243.6 mm at Mount Baw Baw
Wettest day 53.2 mm at Mitchell River @ Glenaladale on the 29th
Strongest wind gust 139 km/h at Mount Hotham 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 lowest September daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Combienbar AWS 5.6 on the 9th = 5.6 on the 2nd in 2014 26 15.8



Record highest September daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Rutherglen Research 18.7 on the 21st 17.8 on the 28th in 1928 102 4.2
Scoresby Research Institute 20.3 on the 21st 20.2 on the 30th in 1980 54 7.6
Essendon Airport 18.3 on the 21st 18.2 on the 30th in 1944 50 6.8
Mortlake Racecourse 14.4 on the 20th 14.1 on the 22nd in 2004 28 5.6
Mallacoota 16.9 on the 21st 16.3 on the 24th in 2001 27 8.2
Coldstream 19.8 on the 21st 19.3 on the 24th in 2001 25 5.5
Eildon Fire Tower 15.8 on the 21st 15.7 on the 28th in 2012 24 5.7
Shepparton Airport 18.1 on the 21st 16.6 on the 24th in 2001 24 5.4
Viewbank 20.2 on the 21st 19.0 on the 24th in 2001 20 7.7



Record lowest September temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Portland (Cashmore Airport) -0.6 on the 17th 0.0 on the 5th in 2007 38 7.5



Record lowest September mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
September
Deniliquin Airport AWS 4.3 = 4.3 in 2018 22 6.0



Lowest September mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
September
Warracknabeal Museum 11.1 10.1 in 1992 12.1



Summary statistics for September 2019
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
September
2019
Diff
from
average
Highest for
September
2019
Mean for
September
2019
Diff
from
average
Lowest for
September
2019
Total for
September
2019
Average
for
September
Rank of
September
2019
Fraction of
September
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 18.0 0.0 25.2 20th 4.5 -1.1 -0.5 10th 20.6 54.6 low 38%
Riverina (East) (district 74)
Deniliquin Airport AWS 20.2 +0.3 28.9 20th 4.3 -1.7 -0.7 11th 13.0 33.5 low 39%
North Mallee (district 76)
Mildura Airport 22.3 +1.7 31.8 15th 6.9 -0.4 0.9 11th 12.0 26.6 low 45%
Walpeup Research 20.9 +1.2 30.6 20th 5.4 -1.5 -1.0 28th 14.8 31.2 low 47%
South Mallee (district 77)
Hopetoun Airport 19.9 -0.4 30.5 20th 3.2 -1.6 -2.9 10th 16.0 26.4 low 61%
Swan Hill Aerodrome 20.6 +0.3 29.9 20th 4.3 -1.5 -1.4 11th 10.0 26.2 low 38%
North Wimmera (district 78)
Kellalac (Warracknabeal Airport) 18.1   27.7 20th 3.5   -1.2 11th 24.4
Nhill Aerodrome 17.3 -1.1 25.4 19th 4.2 -1.6 -1.6 17th 28.0 30.1 average 93%
Warracknabeal Museum 18.1 -0.1 28.0 20th 4.0 -1.9 -1.2 11th 25.8 40.9 average 63%
South Wimmera (district 79)
Edenhope Airport 16.2 -0.9 24.5 19th 4.8 -1.8 -1.3 17th 43.6 48.9 average 89%
Grampians (Mount William) 9.3 +0.5 15.8 20th 2.0 -0.1 -2.7 17th 91.4 114.8 average 80%
Horsham Aerodrome 17.2 -0.9 25.6 20th 2.9 -1.5 -2.1 17th 22.8 36.9 low 62%
Kanagulk 15.8 -0.8 22.2 20th 4.0 -1.6 -0.9 17th 58.4 42.9 high 136%
Longerenong 17.1 -0.3 26.2 20th 3.0 -2.1 -2.3 17th 17.4 40.3 low 43%
Pyrenees (Ben Nevis) 11.8 -0.1 20.3 20th 3.7 -0.4 -0.3 17th 46.4 67.8 average 68%
Stawell Aerodrome 15.9 -0.7 25.4 20th 4.9 -1.1 -1.0 18th 23.4 49.7 low 47%
Lower North (district 80)
Charlton 18.4 -0.6 27.8 20th 3.8 -1.4 -1.2 11th 13.0 34.7 v low 37%
Echuca Aerodrome 19.1 +0.8 28.3 20th 4.7 -1.6 -0.2 18th 15.0 38.7 low 39%
Kerang 20.1 +0.9 29.9 20th 5.7 -0.9 0.6 11th 20.0 35.4 low 56%
Kyabram 18.4 +0.8 27.8 20th 4.4 -0.9 -0.7 11th 19.4 41.3 low 47%
Upper North (district 81)
Bendigo Airport 17.1 +0.1 25.8 20th 3.8 -0.7 -0.5 11th 31.6 50.4 low 63%
Shepparton Airport 18.2 0.0 27.3 20th 4.8 -0.6 -0.7 11th 19.8 36.2 low 55%
Tatura Inst Sustainable Ag 17.6 +0.1 27.1 20th 4.8 -0.6 -0.7 11th 22.2 42.5 low 52%
Yarrawonga 18.7 +0.1 26.9 20th 3.7 -1.4 -1.8 11th 13.8 42.2 v low 33%
Lower Northeast (district 82)
Benalla Airport 17.4 -0.4 24.0 20th 3.5 -0.9 -1.7 11th 23.1 40.9 average 56%
Dartmouth Reservoir 17.1 +0.5 23.2 20th 3.5 -1.0 -1.0 10th 50.6 102.2 low 50%
Hunters Hill 13.1 +0.8 19.8 20th 4.2 -0.3 -0.7 10th 54.2 114.7 low 47%
Rutherglen Research 17.7 +0.5 25.3 27th 2.2 -2.0 -2.5 10th 19.8 53.7 v low 37%
Strathbogie 14.3 0.0 21.5 20th 3.3 -0.4 -2.0 11th 60.2 94.0 low 64%
Wangaratta Aero 17.5 -0.1 25.5 20th 3.3 -1.2 -0.8 11th 21.6 53.1 low 41%
Upper Northeast (district 83)
Mount Buller 4.7 -0.2 10.7 20th -1.3 -0.6 -6.9 17th 135.8 146.2 average 93%
Mount Hotham 3.9 +0.4 9.0 20th -2.0 -0.3 -7.8 17th
Omeo 15.4 0.0 21.2 20th 2.0 -1.1 -2.9 11th 41.2 51.3 low 80%
East Gippsland (district 84)
Combienbar AWS 15.7 -0.1 25.1 20th 6.0 -0.5 0.7 10th 50.6 70.0 average 72%
Gabo Island Lighthouse 16.3 +0.4 23.3 12th 9.5 -0.2 6.1 18th 29.6 71.6 low 41%
Gelantipy 14.0 +0.2 21.7 20th 4.0 -0.4 -1.2 17th 45.2 58.3 average 78%
Lakes Entrance (Eastern Beach Road) 17.4 -0.8 26.4 15th 7.1 -0.7 1.6 1st 38.4 49.0 average 78%
Mallacoota 17.5 0.0 24.1 12th 7.9 -0.3 2.5 18th 60.4 78.5 average 77%
Mount Nowa Nowa 17.1 +0.1 26.5 20th 7.3 -0.5 2.4 17th 39.2 61.6 low 64%
Orbost 17.8 -0.4 27.3 20th 6.9 -0.7 2.6 18th 39.0 56.0 average 70%
Point Hicks (Lighthouse) 17.2 +0.6 26.6 20th 9.8 +0.3 5.9 17th 68.0 75.7 average 90%
West Gippsland (district 85)
Bairnsdale Airport 18.5 +0.7 28.2 20th 5.8 0.0 0.7 18th 33.4 51.3 low 65%
Corner Inlet (Yanakie) 16.1   24.9 20th 7.6   1.3 17th 65.4
East Sale 18.0 +0.9 26.9 20th 5.6 0.0 1.0 18th 36.6 50.2 low 73%
East Sale Airport 18.3   26.9 20th 5.8   1.2 18th 39.2
Morwell (Latrobe Valley Airport) 17.4 +0.4 26.6 20th 5.8 -0.1 -0.8 17th 99.2 74.6 high 133%
Mount Baw Baw 5.5 -0.1 13.2 20th -0.7 -0.5 -5.0 17th 243.6 159.5 high 153%
Mount Moornapa 17.2 +0.9 27.6 20th 6.9 0.0 1.7 9th 43.0 53.0 average 81%
Nilma North (Warragul) 16.8   25.9 20th 6.1   0.0 17th 129.8
Pound Creek 16.5 -0.1 25.9 20th 7.5 0.0 1.3 18th 75.6 80.0 average 95%
Wilsons Promontory Lighthouse 15.1 +0.9 24.2 21st 9.9 +0.9 7.4 28th 69.4 98.6 low 70%
Yarram Airport 17.1 -0.2 24.9 20th 5.6 -0.5 -0.3 18th 58.0 50.1 average 116%
East Central (district 86)
Coldstream 17.4 +0.2 25.3 20th 5.3 -0.2 -0.5 18th 99.2 69.5 high 143%
Cranbourne Botanic Gardens 17.0 +0.4 25.3 20th     5.8 9th 77.1 83.2 average 93%
Essendon Airport 17.6 +0.8 24.9 20th 7.9 +1.1 2.3 18th 43.8 50.8 average 86%
Ferny Creek 13.7   21.4 20th 6.2   2.3 17th 104.6
Melbourne (Olympic Park) 17.8   26.2 20th 9.1   3.6 17th 41.0
Melbourne Airport 17.5 +0.8 24.7 20th 6.8 -0.3 1.1 17th 39.0 46.4 average 84%
Moorabbin Airport 17.3 +0.4 26.3 20th 8.6 +0.6 1.5 17th 66.8 64.0 average 104%
Rhyll 16.0 -0.1 21.9 20th 9.5 0.0 6.8 18th 61.8 67.8 average 91%
Scoresby Research Institute 17.3 +0.8 25.1 20th 7.6 0.0 2.9 18th 93.8 82.6 average 114%
Viewbank 17.8 +0.1 26.0 20th 7.6 -0.1 1.0 17th 67.0 54.7 average 122%
West Central (district 87)
Avalon Airport 17.7 -0.1 26.8 20th 6.6 -0.1 1.5 18th 17.6 44.0 v low 40%
Breakwater (Geelong Racecourse) 17.2   23.8 19th 7.5   2.0 18th 39.2
Laverton RAAF 17.7 +0.7 25.3 20th 7.2 +0.5 2.2 18th 27.8 48.3 low 58%
Sheoaks 15.5 0.0 24.2 20th 6.2 0.0 1.0 18th 31.8 47.3 low 67%
North Central (district 88)
Castlemaine Prison 15.8 +0.1 24.2 20th 4.3 -0.7 0.0 10th 37.3 60.2 average 62%
Eildon Fire Tower 13.4 -0.1 21.1 20th 5.1 -0.6 0.5 9th 58.8 63.6 average 92%
Lake Eildon 16.8 +0.2 25.0 20th 5.7 +0.1 1.5 10th 81.4 81.6 average 100%
Mangalore Airport 16.7 -0.1 24.8 20th 4.3 -1.0 0.4 22nd 43.4 54.2 average 80%
Maryborough 16.6 -0.2 25.8 20th 4.8 -0.6 -0.3 18th 24.2 51.7 low 47%
Puckapunyal Lyon Hill (Defence) 16.7   25.1 20th 6.4   2.6 11th 35.8
Puckapunyal West (Defence) 15.9   23.8 20th 5.5   2.4 17th 39.0
Redesdale 16.6 +0.3 24.3 20th 3.5 -0.6 -1.1 24th 13.2 52.8 v low 25%
Wallan (Kilmore Gap) 13.5 +0.3 20.6 20th 5.5 -0.1 0.3 17th 24.2 59.3 v low 41%
Western Plains (district 89)
Ararat Prison 15.3 0.0 24.5 20th 4.5 -0.6 -2.0 18th 45.0 60.5 average 74%
Ballarat Aerodrome 13.9 0.0 22.4 20th 4.4 -0.4 -0.7 18th 46.6 71.1 low 66%
Westmere 14.9 -0.8 22.9 20th 4.1 -0.7 -2.5 18th 38.4 47.2 average 81%
West Coast (district 90)
Aireys Inlet 16.8 +0.6 26.6 20th 8.1 -0.1 4.7 18th 30.0 57.8 v low 52%
Cape Nelson Lighthouse 15.3 -0.6 23.4 19th 8.8 -0.7 3.2 17th 84.6 73.4 average 115%
Cape Otway Lighthouse 14.6 -0.6 23.1 20th 9.1 +0.6 5.7 18th 81.4 90.0 average 90%
Casterton 15.7 -0.6 22.4 19th 4.7 -1.4 -1.7 17th 85.6 67.2 high 127%
Colac (Mount Gellibrand) 14.5 0.0 22.8 20th 6.4 -0.1 2.3 17th 35.8 54.6 low 66%
Dartmoor 15.9 -0.5 23.0 19th 5.7 -1.1 -1.7 17th 75.0 70.6 average 106%
Hamilton Airport 14.8 -0.5 21.0 20th 4.9 -0.9 -0.3 17th 61.8 67.1 average 92%
Mortlake Racecourse 16.0 +0.2 23.9 20th 4.9 -0.7 -1.0 18th 55.6 56.7 average 98%
Port Fairy AWS 16.2 -0.4 23.9 20th 7.9 -0.4 1.6 17th 54.6 68.3 low 80%
Portland (Cashmore Airport) 15.2 -0.1 22.4 19th 6.9 -0.6 -0.6 17th 95.8 87.5 average 109%
Warrnambool Airport NDB 15.5 -0.5 23.0 20th 6.3 -0.4 -0.1 17th 69.8 73.7 average 95%

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 9 am on Tuesday 1 October 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
(03) 9669 4057
Enquiries

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Climate