Victoria in December 2016: warm and slightly drier than average

Victorian rainfall in December was generally average to below average in most areas. December 2016 in Victoria saw warmer than average temperatures throughout the State.

Drier than average, heavy rain at times

  • Rainfall in December was 18% below average for Victoria as a whole
  • Rainfall totals were below average across much of the south and northwest of the State
  • Areas of above average rainfall were recorded in the Wimmera, alpine northeast and Goulburn regions
  • Storms on the afternoon of 29 December resulted in some of the highest rain rates ever recorded in Victoria
  • Several sites around Melbourne and in the State's northeast recorded more than 100 mm in the 24 hours to 9am on the 30th
  • The storms in late December were associated with high humidity
  • On the morning of the 29th, Melbourne Airport recorded a precipitable water value (a measure of the total amount of moisture in the atmosphere) of 48.2 mm, the highest December value recorded in Victoria in at least 24 years
  • Some sites had their highest December daily rainfall on record, with Mount Hotham breaking its previous daily record by almost 50 percent

Warmer than average temperatures

Wind and snow

  • The strongest wind gust in Victoria was 124 km/h at Mount Hotham on 8 December
  • December snow fell in alpine areas early in the month

Further information

Media
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Extremes in December 2016
Hottest day 41.6 °C at Walpeup Research on the 25th
Warmest days on average 32.3 °C at Ouyen (Post Office)
Coolest days on average 14.9 °C at Mount Hotham
Coldest day 6.6 °C at Mount Baw Baw on the 9th
Coldest night -3.7 °C at Mount Hotham on the 18th
Coolest nights on average 7.0 °C at Mount Hotham
Warmest nights on average 15.9 °C at Mildura Airport
Warmest night 28.9 °C at Mildura Airport on the 26th
Warmest on average overall 23.8 °C at Mildura Airport
Coolest on average overall 11.0 °C at Mount Hotham
Wettest overall 290.2 mm at Mount Hotham
Wettest day 158.6 mm at Mount Hotham on the 30th
Strongest wind gust 124 km/h at Mount Hotham on the 8th

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
Stanhope 88.8 on the 30th 69.3 on the 4th in 1954 93
Bonbeach (Carrum) 60.0 on the 30th 56.4 on the 23rd in 2000 61
Bundoora (Latrobe University) 108.0 on the 30th 80.4 on the 28th in 1999 38
Willow Grove (Blue Rock Reservoir) 35.0 on the 30th 33.0 on the 17th in 1986 31
Falls Creek 106.2 on the 30th 80.0 on the 23rd in 1994 23
Mount Hotham 158.6 on the 30th 106.0 on the 26th in 1996 23



Highest December total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
December
Highlands (Glentannar) 128.2 143.4 in 1985 55.3



Record highest December daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Essendon Airport 26.2 on the 26th = 26.2 on the 20th in 2015 47 11.8
Lake Eildon 22.7 on the 28th 22.3 on the 3rd in 1999 47 11.0
Bundoora (Latrobe University) 26.5 on the 29th 26.0 on the 7th in 1994 33 12.4
Mount Moornapa 23.9 on the 29th 23.7 on the 12th in 1998 24 11.2
Coldstream 24.7 on the 29th 21.7 on the 22nd in 2000 23 9.6



Record highest December mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Castlemaine Prison 13.8 13.5 in 2015 48 10.9
Mallacoota 14.9 14.8 in 2014 23 13.5

Highest December mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
December
Point Hicks (Lighthouse) 15.2 15.4 in 1988* 14.1
Gelantipy 10.8 12.0 in 1992 9.5

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




Record highest December mean temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Mallacoota 19.4 19.2 in 2015 23 17.8



Summary statistics for December 2016
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2016
Diff
from
average
Highest for
December
2016
Mean for
December
2016
Diff
from
average
Lowest for
December
2016
Total for
December
2016
Average
for
December
Rank of
December
2016
Fraction of
December
average
North Mallee (district 76)
Mildura Airport 31.8 +1.5 40.5 27th 15.9 +1.0 8.2 18th 5.6 25.0 average 22%
Ouyen (Post Office) 32.3 +2.0 40.6 25th 15.1 +1.4 7.4 18th 5.3 25.2 low 21%
Walpeup Research 31.7 +1.8 41.6 25th 14.2 +0.6 6.9 9th 5.0 24.0 low 21%
South Mallee (district 77)
Hopetoun Airport 30.9 +0.4 40.8 25th 13.1 +0.1 3.6 18th 12.8 25.9 average 49%
Swan Hill Aerodrome 31.7 +1.2 39.6 13th 14.5 +0.9 5.3 18th 4.8 20.5 low 23%
North Wimmera (district 78)
Nhill Aerodrome 29.0 0.0 39.6 25th 11.9 -0.4 5.2 15th 32.0 27.4 high 117%
Warracknabeal Museum 29.6 +0.8 39.5 25th 12.1 -0.1 5.5 10th 17.2 26.8 average 64%
South Wimmera (district 79)
Edenhope Airport 26.6 -0.3 38.3 25th 10.8 -0.3 3.4 18th 38.8 39.6 average 98%
Grampians (Mount William) 18.5 +0.2 28.9 25th 7.4 -0.2 1.2 9th 63.6 65.8 average 97%
Horsham Aerodrome 28.6 0.0 39.3 25th 10.5 0.0 3.6 18th 31.6 25.3 high 125%
Kanagulk 26.6 -0.7 38.7 25th 10.4 -0.3 5.0 16th 42.2 43.1 average 98%
Longerenong 29.0 +1.2 40.1 25th 10.6 -0.6 2.3 18th 48.4 27.9 high 173%
Pyrenees (Ben Nevis) 22.5   32.2 25th 10.0   3.1 18th 46.4 45.8 average 101%
Stawell Aerodrome 26.8 +0.2 37.9 25th 11.5 +0.2 5.8 16th 53.2 35.4 high 150%
Lower North (district 80)
Charlton 31.1 +1.4 40.0 28th 12.7 -0.3 4.2 18th 33.2 31.0 average 107%
Echuca Aerodrome 30.6 +1.6 38.0 28th 14.4 +1.0 7.0 19th 20.3 29.1 average 70%
Kerang 31.2 +1.5 38.8 28th 15.1 +1.7 8.0 18th 16.4 27.1 average 61%
Kyabram 30.5 +2.3 38.3 26th 13.9 +1.4 6.3 19th 45.4 32.4 high 140%
Upper North (district 81)
Bendigo Airport 28.7 +1.3 37.6 28th 13.4 +1.6 6.4 18th 29.2 39.6 average 74%
Shepparton Airport 29.6 +0.7 37.1 13th 14.0 +1.3 7.8 19th 39.4 32.1 high 123%
Tatura Inst Sustainable Ag 29.4 +1.9 37.5 13th 13.5 +1.2 5.0 19th 58.0 34.4 high 169%
Yarrawonga 31.2 +1.2 38.8 13th 14.3 +1.1 6.3 10th 14.6 39.3 low 37%
Lower Northeast (district 82)
Benalla Airport 29.1 +0.1 37.1 26th 13.5 +0.5 6.9 18th 58.2 48.4 high 120%
Corryong Airport 29.4 +0.4 36.1 28th 11.7 +0.3 5.1 10th 68.2 62.5 average 109%
Dartmouth Reservoir 28.3 +1.5 33.5 25th 13.2 +1.5 7.4 21st 102.8 73.4 high 140%
Hunters Hill 23.7 +0.9 29.8 13th 13.5 +1.7 4.5 9th 76.0 77.9 average 98%
Rutherglen Research 30.7 +1.5 37.7 13th 11.8 +0.3 3.7 10th 13.6 43.8 low 31%
Strathbogie 25.4 +0.7 32.4 13th 10.4 +1.0 3.5 19th 77.0 56.7 high 136%
Wangaratta Aero 30.1 +1.0 38.1 13th 12.6 +0.9 4.3 10th 30.8 43.7 average 70%
Upper Northeast (district 83)
Falls Creek 15.9 +0.8 22.1 25th 8.1 +2.0 -2.1 18th 153.6 111.9 high 137%
Mount Buller 15.8 +1.2 21.9 25th 7.8 +1.6 -2.5 18th 125.6 96.6 average 130%
Mount Hotham 14.9 +1.3 20.4 25th 7.0 +1.5 -3.7 18th 290.2 123.4 v high 235%
Omeo 25.5 +1.5 32.3 25th 9.9 +1.2 -0.2 18th 83.2 61.7 high 135%
East Gippsland (district 84)
Combienbar AWS 24.9 +1.9 35.1 25th 13.1 +1.9 5.4 18th 6.2 66.6 v low 9%
Gabo Island Lighthouse 21.8 +1.9 34.8 13th 15.3 +0.9 11.0 19th 53.4 66.6 average 80%
Gelantipy 23.5 +2.2 31.6 25th 10.8 +1.3 2.6 18th 53.4 67.9 average 79%
Lakes Entrance (Eastern Beach Road) 24.5 +1.9 35.9 13th 13.6 +0.6 6.9 19th 33.0 63.1 low 52%
Mallacoota 23.8 +1.7 36.8 13th 14.9 +1.4 8.7 19th 40.8 70.1 low 58%
Mount Nowa Nowa 24.4 +1.9 34.3 13th 13.4 +1.3 7.3 18th 69.4 82.9 average 84%
Point Hicks (Lighthouse) 24.5 +2.4 34.6 13th 15.2 +1.1 9.8 19th 64.2 71.6 average 90%
West Gippsland (district 85)
Bairnsdale Airport 25.4 +1.7 35.7 13th 12.3 +1.1 4.3 19th 28.6 59.7 low 48%
Corner Inlet (Yanakie) 22.5   34.6 13th 12.6   5.0 19th 28.6
East Sale Airport 25.5 +2.1 35.4 26th 12.8 +1.5 6.0 15th 23.6 54.2 low 44%
Morwell (Latrobe Valley Airport) 26.5 +2.2 36.6 25th 12.3 +1.1 4.0 15th 93.8 66.4 high 141%
Mount Baw Baw 16.0 +1.7 24.2 25th 7.3 +1.6 -1.5 9th 80.8 139.8 v low 58%
Mount Moornapa 25.3 +2.3 35.8 26th 12.5 +1.3 6.4 9th 31.6 59.7 low 53%
Nilma North (Warragul) 25.2   35.7 24th 12.2   5.0 15th 90.8
Pound Creek 23.5   35.0 24th 11.7   4.2 16th 29.0 57.1 low 51%
Wilsons Promontory Lighthouse 20.7 +1.9 32.5 13th 13.8 +1.1 10.0 9th 30.8 63.9 low 48%
Yarram Airport 24.3   36.0 13th 11.6   3.9 7th 52.0 52.8 average 98%
East Central (district 86)
Bundoora (Latrobe University) 26.7 +1.8 37.6 28th 13.4 +1.0 6.0 19th 134.1 64.3 v high 209%
Cerberus 23.7 +1.3 36.3 28th 12.2 +0.3 4.9 3rd 41.4 52.8 average 78%
Coldstream 26.4 +1.2 35.7 25th 11.2 +1.6 2.8 19th 48.2 54.6 average 88%
Cranbourne Botanic Gardens     36.5 28th 11.7 0.0 6.2 19th 76.4 65.1 average 117%
Essendon Airport 26.6 +2.1 38.8 28th 13.5 +1.7 6.5 19th 54.6 50.9 average 107%
Ferny Creek 22.6   31.9 25th 11.9   5.7 9th 117.0
Frankston AWS 23.5 +1.0 35.0 25th 13.4 -0.4 8.8 19th
Melbourne (Olympic Park) 25.5   38.2 28th 14.6   8.8 19th 39.6
Melbourne Airport 26.3 +1.7 38.2 28th 12.7 +0.7 5.5 19th 77.0 48.9 high 157%
Moorabbin Airport 25.5 +1.6 38.0 28th 13.5 +0.9 7.4 19th 72.0 59.3 average 121%
Rhyll 23.2 +1.4 34.2 28th 14.3 +0.6 10.4 19th 34.2 43.9 average 78%
Scoresby Research Institute 26.3 +2.3 36.2 25th 13.1 +1.3 6.5 19th 90.4 75.2 average 120%
Viewbank 27.2 +1.5 37.0 28th 13.5 +0.9 7.7 15th 103.2 65.9 high 157%
Wonthaggi 23.4 +1.4 34.0 24th 12.9 +1.3 6.2 19th 37.2 60.7 low 61%
West Central (district 87)
Avalon Airport 26.4 +2.1 39.8 28th 12.4 +0.7 5.1 19th 5.0 29.3 low 17%
Breakwater (Geelong Racecourse) 25.1   38.5 28th 12.4   6.0 19th 13.4
Laverton RAAF 25.6 +1.8 38.8 28th 13.1 +1.1 5.6 18th 36.6 45.6 average 80%
Sheoaks 25.6 +2.0 36.9 28th 10.8 +0.5 3.3 19th 15.8 30.9 low 51%
North Central (district 88)
Castlemaine Prison 26.9 +1.4 36.5 28th 13.8 +2.9 5.0 18th 47.8 40.6 average 118%
Eildon Fire Tower 24.4 +0.5 32.2 25th 12.5 +1.3 5.1 18th 52.0 42.8 average 121%
Lake Eildon 27.8 +1.4 36.1 25th 12.4 +1.4 5.4 15th 47.4 55.9 average 85%
Mangalore Airport 28.7 +1.6 36.8 13th 13.2 +1.3 3.0 18th 38.0 39.8 average 95%
Maryborough 27.7 +1.0 37.1 28th 12.3 +1.0 5.3 18th 33.6 37.2 average 90%
Redesdale 28.7 +2.0 36.7 28th 11.0 +0.9 0.9 18th 48.8 37.5 high 130%
Wallan (Kilmore Gap) 24.2 +2.1 33.7 28th 11.5 +1.3 4.6 18th 19.8 44.5 low 44%
Western Plains (district 89)
Ararat Prison 26.3 +1.6 37.5 25th 10.5 +1.1 4.0 18th 78.0 38.4 high 203%
Ballarat Aerodrome 24.4 +1.8 34.4 28th 10.3 +0.9 3.3 19th 27.6 49.9 average 55%
Westmere 25.9 +0.1 38.3 25th 9.3 +0.1 1.2 3rd 26.4 43.4 average 61%
West Coast (district 90)
Aireys Inlet 22.9 +1.7 33.5 28th 12.6 +0.4 7.8 19th 31.8 39.5 average 81%
Cape Nelson Lighthouse 20.2 +0.4 30.6 12th 12.8 -0.3 7.3 6th 46.6 40.8 high 114%
Cape Otway Lighthouse 20.5 +0.6 30.6 25th 12.8 +0.8 7.9 3rd 32.2 52.8 low 61%
Casterton 24.3 -1.0 36.9 25th 9.8 -0.3 3.5 1st 42.6 42.5 high 100%
Colac (Mount Gellibrand) 24.1 +0.8 36.6 25th 11.0 +0.3 5.8 18th 27.4 36.3 average 75%
Dartmoor 24.4   37.5 25th 10.3   3.2 3rd 51.8
Hamilton Airport 24.8 +0.7 37.9 25th 9.8 +0.3 3.3 18th 35.2 43.8 average 80%
Mortlake Racecourse 24.6 +1.1 38.3 25th 9.4 +0.2 1.4 3rd 32.6 41.9 average 78%
Port Fairy AWS 21.4 +0.1 33.0 12th 12.4 -0.1 5.4 3rd 24.8 40.7 low 61%
Portland (Cashmore Airport) 20.7 +0.5 30.3 12th 10.7 -0.2 3.6 3rd 51.6 50.0 average 103%
Warrnambool Airport NDB 22.6 -0.1 32.5 12th 10.1 0.0 3.6 16th 37.6 47.1 average 80%

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 10 am on Wednesday 4 January 2017. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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