Victoria in July 2017: Drier than average, with a cold start and warm finish

July rainfall was generally average to below average across the State. This followed on from a record dry June, giving Victoria its second driest start to winter on record. Daytime temperatures were typically above average with some very warm days at the end of the month, including an equal Victorian July record at Mildura. Nights were generally colder than average, especially in northern and central parts that saw some record cold overnight temperatures near the start of the month.

Rainfall was generally below average, especially in the east

  • A large area in the southeast recorded rainfall in the lowest 10% of July totals, with rainfall averaged across the state the lowest since 2010.
  • The below average July following on from a record dry June gave Victoria its second driest start to winter on record (after 1982).
  • One site, Patyah (Booroopki), recorded its highest total July rainfall on record, though this site has a relatively short record.
  • Mildura Airport recorded 4.0 mm, its lowest total July rainfall for 20 years.

Cold nights at the start of the month, but a warm end

  • Mildura Airport in the northwest of the State observed the Victorian equal highest July temperature on the 29th July.
  • The start of the month saw some very cold nights across the State, with some long-term stations such as Rutherglen Research and East Sale Airport recording their lowest July temperature on record.
  • Some stations such as East Sale, Bairnsdale and Latrobe Valley Airport recorded their coldest night on record for any month, with Latrobe Valley Airport breaking this record on two successive nights.
  • Some sites such as Ararat and Bairnsdale had their highest July mean daily maximum temperature on record.
  • The statewide maximum temperature for Victoria was 1.14 °C above average, the sixth highest on record.

A windy end to the month

  • Although the strongest wind gust for the month, 128 km/h, was on the 20th at Wilsons Promontory, there were more widespread strong winds across the State on the 29th. These included a maximum wind gust of 120 km/h at Mt Hotham and 104 km/h at Melbourne Airport. There were reports of building damage and trees being blown over.

Further information

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Extremes in July 2017
Hottest day 27.1 °C at Mildura Airport on the 29th
Warmest days on average 17.8 °C at Mildura Airport
Coolest days on average -0.8 °C at Mount Hotham
Coldest day -3.2 °C at Mount Hotham on the 22nd
Coldest night -8.2 °C at Mount Hotham on the 12th
Coolest nights on average -4.3 °C at Mount Hotham
Warmest nights on average 8.9 °C at Wilsons Promontory Lighthouse
Warmest night 12.0 °C at Phillip Island Penguin Reserve on the 30th
Warmest on average overall 12.0 °C at Gabo Island Lighthouse
Coolest on average overall -2.5 °C at Mount Hotham
Wettest overall 248.6 mm at Falls Creek (Rocky Valley)
Driest overall 4.0 mm at Mildura Airport
Wettest day 45.0 mm at Mount Buller on the 5th
Strongest wind gust 128 km/h at Wilsons Promontory Lighthouse on the 20th

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 July total rainfall
New record
(mm)
Old
record
Years of
record
Average for
July
Patyah (Booroopki) 109.0 101.0 in 2016 20 62.4




Lowest July total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
July
Mount Moornapa 11.4 10.4 in 1994* 60.1
Mildura Airport 4.0 3.6 in 1997 25.2

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




Record highest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Mildura Airport 27.1 on the 29th 26.8 on the 29th in 1975 71 15.4
Ararat Prison 21.0 on the 29th = 21.0 on the 30th in 1975 49 11.8
Bairnsdale Airport 22.7 on the 29th 22.4 on the 21st in 2009 37 14.5
Morwell (Latrobe Valley Airport) 22.0 on the 29th 21.8 on the 21st in 2009 34 13.6
Mount Moornapa 22.4 on the 29th 21.8 on the 18th in 2016 24 12.1
Stawell Aerodrome 20.4 on the 29th 18.7 on the 25th in 2007 22 12.4
Swan Hill Aerodrome 25.7 on the 29th 23.0 on the 27th in 2002 21 14.6
Horsham Aerodrome 21.6 on the 29th 20.0 on the 25th in 2007 20 13.6



Record highest July mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Ararat Prison 13.2 13.1 in 1975 48 11.8
Bairnsdale Airport 16.1 16.0 in 2009 36 14.5
Mount Moornapa 13.9 13.7 in 2013 23 12.1

Highest July mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
July
Mildura Airport 17.8 18.0 in 1975 15.4



Record lowest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Rutherglen Research -6.9 on the 1st -6.6 on the 15th in 1984 100 2.1
East Sale Airport -6.6 on the 3rd -5.8 on the 28th in 1976 72 3.3
Dartmouth Reservoir -5.4 on the 2nd -4.6 on the 4th in 1977 39 2.3
Bairnsdale Airport -5.4 on the 2nd -3.5 on the 8th in 2009 37 4.0
Morwell (Latrobe Valley Airport) -4.8 on the 3rd -3.5 on the 23rd in 1994 34 3.8
Wangaratta Aero -5.6 on the 1st -4.9 on the 12th in 1998 31 2.6
Edi Upper -2.2 on the 1st -2.0 on the 30th in 1997 30 3.6
Willow Grove (Blue Rock Reservoir) -3.5 on the 24th -1.2 on the 25th in 1994 28 4.7
Cerberus -3.0 on the 3rd -2.9 on the 19th in 2015 26 6.4
Redesdale -5.6 on the 2nd -4.2 on the 23rd in 1994 25 3.1
Avalon Airport -4.0 on the 2nd -2.5 on the 20th in 2015 23 5.2
Coldstream -5.3 on the 2nd -4.5 on the 20th in 2015 23 3.9



Record lowest July mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Bairnsdale Airport 1.9 2.8 in 1987 36 4.0
Morwell (Latrobe Valley Airport) 1.5 = 1.5 in 1987 33 3.8
Mallacoota 5.1 = 5.1 in 2008 24 6.3
Redesdale 0.8 1.2 in 1997 24 3.1
Avalon Airport 3.5 = 3.5 in 1998 22 5.2

Lowest July mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
July
East Sale Airport 1.0 0.7 in 1982 3.3
Mangalore Airport 1.7 0.9 in 1997 3.2
Shepparton Airport 2.3 0.4 in 1997 3.4
Tatura Inst Sustainable Ag 2.0 0.6 in 1997 3.0
Wallan (Kilmore Gap) 3.3 2.8 in 1997 4.0



Summary statistics for July 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
July
2017
Diff
from
average
Highest for
July
2017
Mean for
July
2017
Diff
from
average
Lowest for
July
2017
Total for
July
2017
Average
for
July
Rank of
July
2017
Fraction of
July
average
North Mallee (district 76)
Mildura Airport 17.8 +2.4 27.1 29th 4.1 -0.2 -2.1 2nd 4.0 25.2 v low 16%
Ouyen (Post Office) 17.1 +1.9 26.8 29th 3.9 -0.4 -1.5 1st 15.7 30.4 low 52%
Walpeup Research 16.4 +1.8 26.0 29th 4.6 -0.2 -0.3 2nd 18.2 32.2 low 57%
South Mallee (district 77)
Hopetoun Airport 16.2 +1.5 25.5 29th 2.0 -1.3 -4.6 1st 29.2 27.0 average 108%
Swan Hill Aerodrome 15.8 +1.2 25.7 29th 2.5 -1.1 -4.2 1st 12.0 27.1 low 44%
North Wimmera (district 78)
Kellalac (Warracknabeal Airport) 15.2   23.3 29th 3.1   -2.9 1st 38.6
Nhill Aerodrome 14.7 +0.8 22.4 29th 4.5 0.0 -0.3 1st 43.8 36.4 high 120%
Warracknabeal Museum 14.9 +0.9 23.0 29th 3.4 -0.4 -2.8 1st 34.6 40.3 average 86%
South Wimmera (district 79)
Edenhope Airport 14.0 +0.7 17.7 29th 4.9 +0.1 1.3 11th 89.4 65.7 high 136%
Grampians (Mount William) 5.1 +0.3 12.1 29th 1.0 +0.1 -1.5 21st 158.4 181.8 average 87%
Horsham Aerodrome 14.4 +0.8 21.6 29th 2.5 -0.7 -3.5 1st 39.2 41.9 average 94%
Kanagulk 13.3 +0.6 17.3 29th 3.8 -0.5 -1.7 1st 88.4 64.2 high 138%
Longerenong 14.4 +1.2 20.4 29th 2.9 -0.5 -2.4 1st 42.0 43.0 average 98%
Pyrenees (Ben Nevis) 8.1   14.6 29th 2.4   0.1 15th 87.4 89.7 average 97%
Stawell Aerodrome 12.8 +0.4 20.4 29th 3.4 -0.8 -2.3 1st 57.8 56.4 average 102%
Lower North (district 80)
Charlton 14.9 +1.2 23.7 29th 2.7 -1.1 -4.3 1st 28.6 34.9 low 82%
Echuca Aerodrome 14.7 +1.2 21.2 29th 2.5 -1.3 -3.5 2nd 44.8 41.0 average 109%
Kerang 15.4 +1.3 24.0 29th 3.1 -0.8 -3.4 1st 20.0 35.1 low 57%
Kyabram 14.0 +0.9 19.1 25th 2.2 -0.9 -4.2 1st 38.4 43.3 average 89%
Upper North (district 81)
Bendigo Airport 13.4 +0.9 17.9 29th 1.6 -1.1 -3.5 1st 61.4 55.9 average 110%
Shepparton Airport 13.4 +0.2 18.8 25th 2.3 -1.1 -3.9 2nd 42.8 42.8 average 100%
Tatura Inst Sustainable Ag 13.5 +0.5 18.8 25th 2.0 -1.0 -4.8 1st 38.8 47.9 average 81%
Yarrawonga 13.7 +0.2 18.9 25th 2.9 -0.6 -2.9 1st 46.4 47.3 average 98%
Lower Northeast (district 82)
Benalla Airport 12.8 -0.4 16.6 25th 1.6 -1.7 -5.2 2nd 67.2 72.0 low 93%
Dartmouth Reservoir 11.3 -0.4 16.0 30th 1.6 -0.7 -5.4 2nd 94.8 113.6 average 83%
Hunters Hill 7.0 -0.3 10.1 30th 1.5 -0.5 -1.6 16th 136.4 157.2 average 87%
Rutherglen Research 12.9 +0.5 16.9 25th 1.5 -0.6 -6.9 1st 75.8 61.7 high 123%
Strathbogie 10.0 -0.2 13.5 29th 0.8 -1.0 -5.9 2nd 117.6 122.9 average 96%
Wangaratta Aero 12.7 -0.2 16.2 30th 1.4 -1.2 -5.6 1st 67.2 66.1 average 102%
Upper Northeast (district 83)
Falls Creek 0.4 -0.8 4.9 2nd -3.3 -0.4 -6.7 16th 85.2 91.2 average 93%
Mount Buller 0.5 -0.9 6.2 29th -3.1 -0.5 -6.4 16th 241.4 170.5 high 142%
Mount Hotham -0.8 -0.6 5.1 2nd -4.3 -0.7 -8.2 12th 25.2 131.4 lowest 19%
Omeo 11.2 +0.7 14.7 30th -0.6 -1.6 -6.5 1st 34.2 56.6 low 60%
East Gippsland (district 84)
Combienbar AWS 12.6 +1.4 18.7 29th 5.0 +0.1 2.1 1st
Gabo Island Lighthouse 15.4 +1.3 20.7 25th 8.6 +0.4 6.0 22nd 24.0 85.0 v low 28%
Gelantipy 10.2 +0.6 16.8 29th 1.6 -0.6 -2.3 16th 31.2 58.7 average 53%
Lakes Entrance (Eastern Beach Road) 16.1 +0.9 21.9 29th 5.0 -0.8 -2.4 13th 11.0 49.5 v low 22%
Mallacoota 15.7 +0.8 21.9 30th 5.1 -1.2 0.8 10th 37.8 80.8 low 47%
Mount Nowa Nowa 13.9 +1.0 19.8 29th 5.8 -0.2 2.8 16th 15.4 63.0 v low 24%
Orbost 15.7 +0.7 23.0 29th 4.2 -1.4 0.9 22nd 13.4 61.2 v low 22%
Point Hicks (Lighthouse) 15.0 +0.8 20.6 25th 7.5 -0.7 2.1 2nd 51.4 98.5 low 52%
West Gippsland (district 85)
Bairnsdale Airport 16.1 +1.6 22.7 29th 1.9 -2.1 -5.4 2nd 14.0 48.0 low 29%
Corner Inlet (Yanakie) 14.1   20.5 29th 5.3   -3.0 2nd 86.2
East Sale Airport 15.2 +1.4 22.6 29th 1.0 -2.3 -6.6 3rd 16.4 40.9 low 40%
Morwell (Latrobe Valley Airport) 14.2 +0.6 22.0 29th 1.5 -2.3 -4.8 3rd 49.0 64.8 low 76%
Mount Baw Baw 1.9 -0.2 7.3 29th -2.2 -0.6 -5.8 1st 129.6 159.9 average 81%
Mount Moornapa 13.9 +1.8 22.4 29th 4.9 -0.4 1.4 1st 11.4 60.1 v low 19%
Nilma North (Warragul) 13.4   18.8 29th 2.8   -5.3 2nd 85.2
Pound Creek 14.1 +0.2 20.1 29th 5.0 -1.0 -4.2 3rd 72.8 84.4 average 86%
Wilsons Promontory Lighthouse 12.7 +0.5 20.6 29th 8.9 +0.5 6.9 20th 113.0 122.7 average 92%
Yarram Airport 14.8   22.9 29th 2.5   -5.2 22nd 30.0 54.3 low 55%
East Central (district 86)
Bundoora (Latrobe University) 14.3 +0.9 18.1 29th 4.9 -0.7 -2.7 2nd 26.2 49.4 low 53%
Cerberus 13.8 +0.2 18.4 29th 5.2 -1.2 -3.0 3rd 67.2 72.7 average 92%
Coldstream 14.2 +0.9 18.5 29th 2.9 -1.0 -5.3 2nd 43.6 62.3 low 70%
Cranbourne Botanic Gardens     15.7 4th 6.3 +0.1 0.3 2nd 51.1 70.4 low 73%
Essendon Airport 14.3 +1.2 17.8 30th 5.4 0.0 -2.0 1st 19.4 43.6 v low 44%
Ferny Creek 9.8   14.1 29th 4.8   1.6 15th 95.8
Frankston AWS 13.1 +0.3 17.3 29th 7.5 -0.5 2.0 1st
Melbourne (Olympic Park) 14.5   18.1 30th 6.6   0.8 2nd 30.4
Melbourne Airport 14.0 +0.9 17.0 30th 4.8 -0.6 -0.6 2nd 16.0 35.9 low 45%
Moorabbin Airport 14.4 +0.7 18.7 29th 5.9 -0.3 -2.1 2nd 38.2 61.7 low 62%
Rhyll 13.6 +0.3 16.8 29th 7.7 -0.5 4.1 3rd 73.8 70.1 average 105%
Scoresby Research Institute 14.0 +1.0 17.7 29th 5.7 -0.1 -0.6 1st 53.4 73.4 low 73%
Viewbank 14.4 +0.5 18.2 30th 5.0 -1.0 -2.8 2nd 26.2 49.6 v low 53%
Wonthaggi 14.1 +0.6 18.9 29th 5.9 -0.3 -1.0 3rd 103.8 98.8 average 105%
West Central (district 87)
Avalon Airport 14.8 +0.7 20.2 25th 3.5 -1.7 -4.0 2nd 29.8 38.4 average 78%
Breakwater (Geelong Racecourse) 14.6   19.4 25th 5.2   -2.2 2nd 43.4
Laverton RAAF 14.6 +0.9 18.0 25th 4.9 -0.2 -1.7 1st 27.2 38.7 average 70%
Sheoaks 13.2 +1.0 18.4 29th 4.4 -0.7 -3.7 2nd 25.8 40.5 low 64%
North Central (district 88)
Castlemaine Prison 12.2 +0.5 16.8 29th     -3.0 21st 50.5 61.1 average 83%
Eildon Fire Tower 9.1 -0.1 14.4 29th 3.3 -0.6 -0.6 1st 79.4 70.1 average 113%
Lake Eildon 12.7 +0.7 16.9 30th 3.4 -0.3 -2.0 1st 82.8 94.0 average 88%
Mangalore Airport 12.8 +0.3 16.5 25th 1.7 -1.5 -4.9 2nd 57.0 57.9 average 98%
Maryborough 12.9 +0.7 17.3 25th 2.2 -1.2 -3.5 2nd 52.2 54.0 average 97%
Redesdale 13.0 +1.1 16.7 25th 0.8 -2.3 -5.6 2nd 50.2 65.5 average 77%
Wallan (Kilmore Gap) 9.6 +0.5 14.0 29th 3.3 -0.7 0.0 16th 46.2 63.1 low 73%
Western Plains (district 89)
Ararat Prison 13.2 +1.4 21.0 29th 3.3 -0.1 -3.5 21st 69.8 63.2 average 110%
Ballarat Aerodrome 10.8 +0.7 15.1 29th 1.9 -1.3 -4.0 1st 59.0 66.5 average 89%
Westmere 12.6 +0.4 17.7 29th 3.4 -1.0 -3.2 21st 41.4 56.5 low 73%
West Coast (district 90)
Aireys Inlet 13.4 0.0 16.9 25th 6.5 -0.8 2.8 3rd 71.2 69.6 average 102%
Cape Nelson Lighthouse 14.0 +0.2 16.8 22nd 7.9 -0.5 3.8 21st 125.8 99.2 high 127%
Cape Otway Lighthouse 13.3 +0.3 16.0 25th 7.7 +0.2 4.1 2nd 121.8 106.0 high 115%
Casterton 13.5 +0.5 17.1 25th 4.6 -0.4 -0.5 1st 82.2 83.9 average 98%
Colac (Mount Gellibrand) 11.9 +0.3 15.7 25th 4.7 -0.6 1.6 21st 58.4 58.5 average 100%
Dartmoor 13.8   16.1 22nd 4.8   -0.6 1st 84.2
Hamilton Airport 12.5 +0.4 15.0 29th 4.0 -0.4 -0.6 21st 64.4 70.7 average 91%
Mortlake Racecourse 13.6 +0.7 16.7 25th 3.7 -0.9 -3.4 21st 48.2 63.3 low 76%
Port Fairy AWS 14.1 -0.1 16.4 25th 6.1 -0.9 0.4 21st 78.0 90.5 average 86%
Portland (Cashmore Airport) 13.6 +0.5 15.9 25th 6.1 -0.2 0.0 1st 121.4 112.1 high 108%
Warrnambool Airport NDB 13.5 0.0 16.4 25th 4.8 -0.8 -1.0 21st 71.4 84.9 average 84%

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 11 am on Tuesday 1 August 2017. 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