Victoria in July 2011: Wetter than usual in Gippsland

  • Wetter than usual over Gippsland
  • Night-time temperatures close to average
  • Daytime temperatures typical for July.

Rainfall

Preliminary rainfall data indicates that July 2011 totals are close to average for much of the state. In the north-west, parts of the Mallee were drier than usual, whilst in the south-east parts of Gippsland were wetter than usual. The wettest station overall was Falls Creek (Rocky Valley) with 317.6 mm and the wettest single day was the 24th when Gelantipy recorded 72.2 mm. There is a map of rainfall deciles below.

Temperature

The warmest station on average was Cape Nelson Lighthouse with 11.5 C. The coolest on average was Mount Hotham with -2.4 C.

Maximum temperature

Average maximum temperatures were cooler than usual in parts of the south-east and south-west but elsewhere they were generally warmer than usual. Average maximum temperature anomalies generally ranged from -1 C to 1 C across the state. The hottest day was the 31st when Ouyen (Post Office) recorded 21.1 C. The warmest days on average were at Mildura Airport with 15.7 C. The coolest days on average were recorded at Mount Hotham with -0.7 C and the coldest day, -3.7 C on the 7th, was also recorded at Mount Hotham.

There is a map of maximum temperature anomalies below.

Minimum temperature

Average minimum temperatures were close to normal across most of the state. Average minimum temperature anomalies were generally positive except for parts of the Mallee. The strongest positive anomalies were in parts of the south-west and Gippsland. The coldest temperature, -7.0 C, was recorded at Dinner Plain (Mount Hotham Airport) and Mount Hotham on the 15th and again at Mount Hotham on the 23rd. The coolest nights on average were at Mount Hotham with -4.1 C, whilst the warmest nights on average, 9.1 C, were recorded at both Cape Nelson Lighthouse and Portland NTC AWS. The warmest night was the 1st when Portland NTC AWS recorded 13.0 C.

Some sites had their highest July mean daily minimum temperature on record. There is a map of minimum temperature anomalies below.

Wind

The strongest wind gust was at Wilsons Promontory Lighthouse with 146 km/h on the 5th.

Further information

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Extremes in July 2011
Hottest day 21.1 C at Ouyen (Post Office) on the 31st
Warmest days on average 15.7 C at Mildura Airport
Coolest days on average -0.7 C at Mount Hotham
Coldest day -3.7 C at Mount Hotham on the 7th
Coldest night -7.0 C at Dinner Plain (Mount Hotham Airport) on the 15th
-7.0 C at Mount Hotham on the 15th and 23rd
Coolest nights on average -4.1 C at Mount Hotham
Warmest nights on average 9.1 C at Cape Nelson Lighthouse
9.1 C at Portland NTC AWS
Warmest night 13.0 C at Portland NTC AWS on the 1st
Warmest on average overall 11.5 C at Cape Nelson Lighthouse
Coolest on average overall -2.4 C at Mount Hotham
Wettest overall 317.6 mm at Falls Creek (Rocky Valley)
Wettest day 72.2 mm at Gelantipy on the 24th
Highest wind gust 146 km/h at Wilsons Promontory Lighthouse on the 5th

Maps

Anomaly in mean maximum temperature

Map of Anomaly in mean maximum temperature

Anomaly in mean minimum temperature

Map of Anomaly in mean minimum temperature

Rainfall deciles

Map of Rainfall deciles


Record highest July mean daily minimum temperature
Mean daily minimum
temperature
for July 2011 (C)
Previous warmest
for July
Years of
record
Average for
July
Portland (Cashmore Airport) 7.7 7.5 in 1988 29 6.2


Summary statistics for July 2011
Maximum temperatures
for July
(C)
Minimum temperatures
for July
(C)
Rainfall
for July
(millimetres)
Mean for
July
2011
Diff
from
average
Highest for
July
2011
Mean for
July
2011
Diff
from
average
Lowest for
July
2011
Total for
July
2011
Average
for
July
Rank of
July
2011
Fraction of
July
average
Southwest Slopes (South) (district 72)
Albury Airport AWS 13.0 -0.1 17.2 21st 3.1 +0.1 -1.6 15th 70.2 65.5 average 107%
Hume Reservoir 12.8 +0.6 17.3 21st 4.5 +0.6 0.5 15th 71.6 76.5 average 94%
North Mallee (district 76)
Mildura Airport 15.7 +0.4 20.9 2nd 4.2 -0.1 -0.9 8th 14.2 25.9 low 55%
Ouyen (Post Office) 15.0 -0.1 21.1 31st 4.5 +0.2 0.1 23rd 22.0 30.9 average 71%
Walpeup Research 15.3 +0.7 21.0 31st 4.9 +0.1 0.4 22nd 19.6 32.9 low 60%
South Mallee (district 77)
Hopetoun Airport 15.5   20.8 31st 3.3   -4.5 27th 15.0
Swan Hill Aerodrome 15.2 +0.6 20.4 31st 3.5 -0.1 -2.9 27th 18.4 28.5 low 65%
North Wimmera (district 78)
Nhill Aerodrome 14.5   20.6 31st 4.5   -0.8 22nd 39.4
Warracknabeal Museum 14.5 +0.5 19.5 31st 4.2 +0.5 -1.5 27th 39.7 40.2 average 99%
South Wimmera (district 79)
Edenhope Airport 13.4   18.9 1st 5.4   0.2 27th 74.8
Grampians (Mount William) 4.8   10.0 31st 0.8   -1.6 7th 184.8
Horsham Aerodrome 13.9 +0.3 19.0 31st 3.5 +0.4 -1.8 23rd 42.6 40.7 average 105%
Horsham Polkemmet Rd 13.9 +0.5 19.0 31st 3.7 0.0 -1.6 15th 50.0 47.0 average 106%
Kanagulk 12.8   18.7 31st 4.6   0.4 15th 76.2
Longerenong 13.8 +0.7 18.7 31st 3.8 +0.5 -1.0 27th 53.4 42.8 high 125%
Pyrenees (Ben Nevis) 6.6   11.0 2nd 2.2   -1.5 24th 83.4
Stawell Aerodrome 12.5 0.0 16.5 31st 4.5 +0.5 -0.5 23rd 49.4 55.8 average 89%
Lower North (district 80)
Charlton 14.3   19.0 31st 4.4   -1.7 27th 33.0
Echuca Aerodrome 14.4 +1.0 19.3 31st 2.6 -1.2 -1.9 15th 35.0 40.8 average 86%
Kerang 14.9 +0.8 20.1 31st 4.3 +0.3 -0.4 27th 33.8 35.5 average 95%
Kyabram DPI 14.1 +1.1 18.4 31st 3.8 +0.8 -2.1 27th 33.0 43.2 average 76%
Upper North (district 81)
Bendigo Airport 13.0 +0.5 17.3 31st 3.3 +0.9 -3.1 27th 53.8 52.8 average 102%
Shepparton Airport 13.6 +0.4 18.2 31st 3.5 +0.4 -2.8 15th 38.8 41.2 average 94%
Tatura Inst Sustainable Ag 13.6 +0.6 17.9 31st 3.5 +0.6 -2.6 15th 37.2 48.1 average 77%
Yarrawonga 14.0 +0.5 18.4 20th 3.8 +0.4 -1.4 15th 39.0 47.0 average 83%
Lower Northeast (district 82)
Benalla Airport 13.3   17.6 22nd 3.2   -1.8 15th 69.9
Corryong Airport 11.2   17.0 20th 0.6   -5.0 15th 60.0
Dartmouth Reservoir 11.3 -0.4 14.5 30th 2.2 +0.1 -2.4 29th 97.8 112.4 average 87%
Hunters Hill 7.0 -0.2 11.2 22nd 1.7 -0.2 -1.2 8th 164.4 152.3 average 108%
Rutherglen Research 12.9 +0.5 18.0 20th 2.2 +0.2 -4.2 15th 60.8 61.9 average 98%
Strathbogie 10.2 +0.1 13.9 31st 2.6 +1.0 -4.0 16th 112.6 123.1 average 91%
Wangaratta Aero 13.3 +0.4 17.4 20th 2.7 +0.3 -2.8 15th 74.0 66.7 average 111%
Upper Northeast (district 83)
Dinner Plain (Mount Hotham Airport) 6.1 -0.2 11.4 29th -1.7 +0.1 -7.0 15th 74.2 65.5 average 113%
Edi Upper 12.2 +0.3 16.4 21st 3.4 -0.1 -0.8 15th 132.1 124.8 average 106%
Falls Creek 0.6 -0.6 8.5 1st -3.1 -0.1 -6.5 15th 103.6 78.9 high 131%
Mount Buller 0.4 -1.1 5.5 1st -3.4 -0.8 -5.7 8th 171.6 162.8 average 105%
Mount Hotham -0.7 -0.7 6.5 1st -4.1 -0.5 -7.0 15th 143.8 131.1 average 110%
Omeo 10.3   13.7 30th 0.2   -5.3 16th 79.8
East Gippsland (district 84)
Combienbar AWS 11.1 0.0 17.8 31st 4.8 0.0 0.7 8th 144.4 79.6 high 181%
Gabo Island Lighthouse 14.5 +0.4 18.7 4th 8.0 -0.2 5.1 10th 76.8 86.3 average 89%
Gelantipy 9.2 -0.3 14.3 31st 2.1 0.0 -2.2 8th 274.2 60.2 v high 455%
Lakes Entrance (Eastern Beach Road) 14.7   20.7 31st 5.5   -1.3 16th 79.2
Mallacoota 14.5 -0.3 19.8 31st 5.9 -0.3 0.4 10th 106.6 80.8 high 132%
Mount Nowa Nowa 12.6 -0.3 18.9 31st 5.8 -0.1 2.5 8th 171.8 65.3 v high 263%
Orbost 14.3 -0.7 20.1 31st 5.4 -0.2 -0.5 16th 144.8 66.7 v high 217%
Orbost (Comparison) 14.6 -0.2 20.6 31st 4.6 +0.4 -1.8 16th 139.0 67.6 v high 206%
Point Hicks (Lighthouse) 14.0 -0.1 20.0 31st 7.8 -0.4 4.5 7th 131.8 98.5 high 134%
West Gippsland (district 85)
Bairnsdale Airport 14.4 -0.1 20.2 31st 3.6 -0.3 -3.4 16th 67.8 50.2 high 135%
East Sale Airport 13.7 -0.1 19.2 31st 4.2 +1.0 -3.6 16th 69.6 41.4 high 168%
Morwell (Latrobe Valley Airport) 13.1 -0.5 19.0 31st 4.5 +0.9 -2.4 16th 76.8 65.5 average 117%
Mount Baw Baw 1.1 -1.2 7.0 1st -1.9 -0.3 -5.6 15th 249.8 139.9 high 179%
Mount Moornapa 11.6 -0.4 18.5 31st 5.2 0.0 0.9 8th 173.0 60.0 v high 288%
Noojee (Slivar) 12.2 +0.2 17.5 31st 4.3 +1.3 -0.9 16th 111.4 103.9 average 107%
Pound Creek 13.5   18.5 31st 6.3   0.0 16th 84.2
Wilsons Promontory Lighthouse 12.6 +0.4 17.4 31st 9.0 +0.7 6.3 7th 128.2 122.1 average 105%
Yarram Airport 13.7   19.2 31st 4.7   -2.9 16th 111.2
East Central (district 86)
Bundoora (Latrobe University) 13.5 +0.2 17.0 29th 6.0 +0.6 -0.1 16th 40.6 48.6 average 84%
Cerberus 13.3 -0.3 18.4 31st 6.9 +0.7 -1.0 16th 62.4 73.5 average 85%
Coldstream 13.3 +0.1 17.5 31st 4.7 +1.1 -1.8 16th 76.8 60.3 high 127%
Coldstream Comparison 13.3   17.5 31st 4.6   -1.9 16th 76.6
Cranbourne Botanic Gardens 12.8 -0.5 17.0 1st 6.2 +0.1 0.0 16th 66.3 68.5 average 97%
Essendon Airport 13.7 +0.8 17.8 31st 6.1 +0.9 -1.1 16th 27.6 43.5 low 63%
Ferny Creek 9.3   14.0 31st 5.1   1.6 7th 114.8
Ferny Creek (Dunns Hill) 8.2 -0.8 12.9 1st 4.4 -0.5 1.4 7th 102.4 85.1 average 120%
Frankston AWS 13.1 +0.4 16.5 1st 8.3 +0.4 3.6 23rd
Melbourne Airport 13.5 +0.5 18.7 31st 5.6 +0.3 0.1 16th 22.4 35.5 low 63%
Melbourne Regional Office 14.6 +1.2 19.4 31st 7.7 +1.7 2.7 27th 37.2 47.5 average 78%
Moorabbin Airport 13.8 +0.2 18.5 31st 6.7 +0.6 -0.9 16th 51.2 61.8 average 83%
Rhyll 13.0 -0.2 16.4 31st 8.4 +0.3 4.2 16th 67.6 65.3 average 104%
Scoresby Research Institute 13.5 +0.6 18.3 31st 6.4 +0.7 -0.6 16th 56.6 73.6 low 77%
Viewbank (ARPANSA) 13.8 -0.1 18.5 31st 6.3 +0.6 -0.2 16th 56.0 49.0 average 114%
Wallan (Kilmore Gap) 9.1 +0.1 13.0 31st 4.0 +0.1 1.4 28th 69.0 59.4 average 116%
Wonthaggi 13.6 +0.1 18.9 31st 6.8 +0.7 1.5 16th 89.2 99.0 average 90%
West Central (district 87)
Avalon Airport 14.2 +0.2 20.4 31st 5.7 +0.7 -2.1 16th 25.0 37.3 low 67%
Breakwater (Geelong Racecourse) 14.1   20.3 31st 6.6   -0.6 16th 36.8
Laverton RAAF 13.9 +0.3 19.9 31st 6.1 +1.2 -1.8 16th 23.0 38.7 low 59%
Sheoaks 12.3 +0.2 17.5 31st 5.5 +0.5 -2.3 16th 29.0 38.7 average 75%
North Central (district 88)
Castlemaine Prison 11.7 0.0 16.4 31st 3.4 +0.6 -1.9 27th 51.0 60.8 average 84%
Eildon Fire Tower 8.9 -0.2 13.4 31st 3.9 +0.1 0.6 27th 69.8 66.2 average 105%
Lake Eildon 12.4 +0.5 16.8 31st 4.1 +0.6 -0.8 15th 84.0 93.5 average 90%
Mangalore Airport 13.2 +0.8 16.7 30th 3.3 +0.2 -2.6 29th 32.8 58.2 low 56%
Maryborough 12.9 +0.7 16.8 31st 3.7 +0.3 -1.2 27th 51.4 53.7 average 96%
Redesdale 12.4 +0.6 16.5 22nd 3.0 0.0 -2.5 28th 50.8 65.5 average 78%
Western Plains (district 89)
Ararat Prison 12.3 +0.6 17.2 31st 4.3 +1.0 -2.2 27th 57.5 62.4 average 92%
Ballarat Aerodrome 10.5 +0.5 14.4 31st 3.9 +0.7 -2.2 27th 49.6 66.2 low 75%
Westmere 12.1   16.2 31st 4.9   -1.6 16th 38.4
West Coast (district 90)
Aireys Inlet 13.1 -0.2 18.2 31st 7.3 0.0 3.7 16th 97.2 66.1 high 147%
Cape Nelson Lighthouse 13.8 +0.1 18.2 31st 9.1 +0.7 3.4 16th 95.2 93.8 average 101%
Cape Otway Lighthouse 13.3 +0.3 18.6 31st 8.7 +1.2 5.4 16th 96.8 105.3 average 92%
Casterton 12.9   17.9 31st 5.5   -1.1 15th 90.6
Colac (Mount Gellibrand) 11.7 +0.2 16.6 31st 5.4 +0.2 2.1 7th 66.4 56.0 average 119%
Dartmoor 13.4   18.1 31st 5.8   -0.9 27th 119.6
Hamilton Airport 12.2 +0.1 17.0 31st 4.7 +0.4 -0.3 16th 88.4 67.5 high 131%
Mortlake Racecourse 13.0 +0.1 18.3 31st 5.3 +0.9 0.5 16th 58.8 60.7 average 97%
Port Fairy AWS 14.1 -0.1 18.8 31st 8.0 +1.0 2.9 16th 110.6 90.0 average 123%
Portland (Cashmore Airport) 13.2 +0.1 17.5 31st 7.7 +1.5 1.0 16th 114.0 107.4 average 106%
Portland NTC AWS 13.6   17.7 31st 9.1   3.0 27th
Warrnambool Airport NDB 13.4 -0.1 17.6 31st 6.5 +1.1 0.1 16th 85.8 79.1 average 108%
Weeaproinah 9.2 +0.2 13.9 31st 4.7 +0.1 2.5 7th 296.2 226.3 high 131%

Notes

A Monthly Climate Summary is prepared to list 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. 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.

This statement has been prepared based on information available at 10 am on Monday 1 August 2011. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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.

Further information

Media
(03) 9669 4057
Enquiries