Tasmania in December 2014: a mild month

The final month of 2014 was mild for Tasmania: overnight temperatures were well above average, daytime temperatures were generally above average, but the hottest day reached only 31.1 °C. Rainfall was mostly average or below, although some areas were quite dry and there were some locally heavy falls.

The start of the month saw Tasmania's weather controlled mostly by easterly winds, giving the east and north persistently mild overnight temperatures but cloudy and relatively cool days. Westerly winds came to the fore around the middle of the month, and northwesterly winds ahead of an approaching cold front pushed temperatures into the high twenties for most areas from the 14th to the 16th, and saw a few sites reach over 30 °C. The second half of the month was more mixed, with some quite cool days (notably the 26th and 30th) interspersed with warm days (notably the 21st, 28th and 29th). Overall, mean maximum temperatures for the month were above average at almost all sites, typically by around half a degree.

Very mild nights early in the month were balanced against generally below-average nights through the second half: for some sites the morning of the 31st was the coolest for the month. Mean minimum temperatures were above average across the State, typically by about a degree.

Rainfall was mixed, with below-average totals in most areas but a few very wet days. Westerly winds brought light to moderate falls to the west through the second half of the month, enhanced by cold fronts that crossed on the 16th, 18th and 30th. There were also local thunderstorms, including those that brought Hobart large hail and flash flooding on the 16th and a line of intense storms that crossed the southeast on the 29th.

  • Daytime temperatures above average overall
  • Warm nights, especially in the first half of the month
  • Plenty of mild weather, but some cool weather as well
  • Rain average or below in most areas
  • Some localised thunderstorms

Further information

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Extremes in December 2014
Hottest day 31.1 °C at Hobart Airport on the 16th
Warmest days on average 23.3 °C at Ouse Fire Station
Coolest days on average 11.8 °C at Mount Wellington
Coldest day 4.7 °C at Mount Wellington on the 30th
Coldest night -0.9 °C at Liawenee on the 22nd
Coolest nights on average 3.7 °C at Mount Wellington
Warmest nights on average 14.0 °C at Swan Island
Warmest night 19.4 °C at Flinders Island Airport on the 23rd
Warmest on average overall 17.4 °C at Flinders Island Airport
Coolest on average overall 7.7 °C at Mount Wellington
Wettest overall 252.8 mm at Mount Read
Driest overall 20.4 mm at The Den
Wettest day 55.0 mm at Mount Read on the 30th
Strongest wind gust 130 km/h at Hogan Island on the 16th and 29th

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 total rainfall
New record
(mm)
Old
record
Years of
record
Average for
December
Mount Seymour 94.8 79.8 in 2005* 20 43.4
Renison Bell 42.8 24.8 in 1980* 30 148.2
* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported.


Lowest December total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Years since
lower
Average for
December
King Island Airport 21.6 19.8 in 1980 34 49.8



Record highest December mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Lake Leake (Elizabeth River) 8.2 8.0 in 2005 24 6.9
Ross (The Boulevards) 10.3 9.9 in 1998 21 8.5

Highest December mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Years since
higher
Average for
December
Cape Sorell 12.2 12.6 in 1919* 55 10.9
Fingal (Legge Street) 9.9 10.0 in 1990 24 8.6
Scottsdale (West Minstone Road) 10.6 10.8 in 1992 22 9.2

* 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
Wynyard Airport 15.5 = 15.5 in 2007 28 14.5



Summary statistics for December 2014
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2014
Diff
from
average
Highest for
December
2014
Mean for
December
2014
Diff
from
average
Lowest for
December
2014
Total for
December
2014
Average
for
December
Rank of
December
2014
Fraction of
December
average
Northern (district 91)
Bridport (Sea View Villas) 20.4 +0.3 23.6 14th 10.3 -0.7 5.4 19th 40.0 46.0 average 87%
Burnie (Round Hill) 20.2 +0.7 25.5 14th 12.4 +1.3 7.7 19th
Cape Grim 18.0   20.5 10th 12.4   9.7 16th 36.8
Cape Grim BAPS (Comparison) 18.3 +1.0 20.9 28th 12.4 +0.6 9.7 26th 36.8 46.0 average 80%
Cressy Research Station 22.7 0.0 27.5 14th 9.9 +1.6 1.9 19th 34.0 43.3 average 79%
Devonport Airport 20.2 +0.6 24.4 20th 11.6 +1.1 5.6 19th 23.4 52.9 low 44%
Launceston (Ti Tree Bend) 22.7 +0.3 27.2 14th 12.0 +1.4 5.3 19th 74.6 47.7 high 156%
Launceston Airport 22.4 +0.1 27.0 14th 9.7 +0.9 3.0 31st 87.4 48.9 v high 179%
Low Head 19.5 +0.7 22.3 11th 13.6 +0.9 10.8 7th 30.0 43.0 average 70%
Luncheon Hill (Forestry) 18.8 +0.3 23.1 15th 9.7 +1.1 5.6 19th 93.2 92.2 average 101%
Marrawah 18.9 +0.6 22.3 28th 11.6 +1.0 8.7 25th 59.0 63.7 average 93%
Scottsdale (West Minstone Road) 21.1 +0.3 25.3 14th 10.6 +1.4 4.0 19th 54.4 66.8 average 81%
Sheffield School Farm 20.3 +0.8 25.1 14th 9.5 +0.7 5.3 19th 51.6 66.3 average 78%
Smithton Aerodrome 20.2 +0.7 23.7 11th 9.8 +0.2 4.2 28th 64.4 59.6 average 108%
Wynyard Airport 20.5 +0.9 25.3 14th 10.5 +1.0 4.7 24th 49.6 64.7 average 77%
East Coast (district 92)
Bicheno (Council Depot) 20.3 +0.3 30.5 14th 12.4 +0.9 7.8 31st 64.1 67.3 average 95%
Fingal (Legge Street) 22.0 +0.5 30.1 14th 9.9 +1.3 2.7 19th 61.0 49.7 average 123%
Friendly Beaches 21.9 +0.3 31.0 14th 12.3 +0.7 8.5 19th 55.8 40.9 average 136%
Lake Leake (Elizabeth River) 18.1 +0.5 25.3 14th 8.2 +1.3 2.3 27th 51.4 72.1 average 71%
Larapuna (Eddystone Point) 21.0 +1.5 26.5 14th 13.3 +1.1 7.9 31st 70.4 60.0 average 117%
Maria Island (Point Lesueur) 19.3 -0.5 25.0 16th 12.6 +0.5 9.7 12th 59.6 48.2 high 124%
Orford (Aubin Court) 20.5 +0.1 28.3 16th 11.5 +1.0 7.8 19th 80.5 63.1 high 128%
St Helens Aerodrome 21.8 +0.8 29.6 14th 12.6 +1.1 7.4 31st 66.4 50.1 high 133%
Swan Island 20.1 +0.8 26.5 29th 14.0 +0.8 10.0 31st 68.2 50.7 high 135%
Swansea (Francis Street) 21.4   29.7 29th 11.7   5.7 19th 54.4
Midlands (district 93)
Ross (The Boulevards) 22.8 +0.3 29.7 14th 10.3 +1.8 3.4 19th 31.0 37.7 average 82%
Southeast (district 94)
Campania (Kincora) 21.9 -0.8 30.3 16th 11.1 +1.2 5.9 18th 92.2 39.2 v high 235%
Cape Bruny (Cape Bruny) 18.5 +0.2 25.1 29th 10.9 +0.3 8.8 19th
Cape Bruny Lighthouse 17.7 +0.7 24.6 29th 11.1 +0.8 8.2 31st 63.6 76.0 average 84%
Dennes Point 19.6   25.3 29th 12.0   8.2 12th 50.0
Dover 19.5 +0.4 25.6 29th 9.3 +0.4 5.6 19th 72.4 70.9 average 102%
Dunalley (Stroud Point) 20.0   26.1 16th 12.2   8.6 12th 74.8
Geeveston (Cemetery Road) 20.0 +0.1 28.0 29th 8.9 +0.2 2.0 25th 69.0 70.5 average 98%
Grove (Research Station) 20.6 -0.3 28.5 29th 9.3 +1.2 3.8 18th 67.4 59.0 average 114%
Hobart (Ellerslie Road) 20.3 0.0 29.2 29th 12.1 +1.3 8.2 12th 78.0 56.3 high 139%
Hobart Airport 21.2 +0.5 31.1 16th 11.6 +0.9 5.4 12th 57.2 52.6 average 109%
Maatsuyker Island Lighthouse 15.8 +0.1 21.1 29th 10.7 +1.1 8.2 26th 55.6 90.0 low 62%
Melton Mowbray (North Stockman) 21.5 -0.2 28.8 28th 9.5 +0.6 4.3 18th 62.8 38.4 high 164%
Mount Wellington 11.8 +0.8 18.0 13th 3.7 +0.9 -0.4 31st 125.6 89.1 high 141%
Tasman Island 15.9 -0.6 21.4 29th 10.4 +0.3 8.0 31st 92.8 62.5 high 148%
Tunnack Fire Station 19.1 -0.2 24.9 29th 8.4 +1.0 2.1 18th 79.0 53.1 high 149%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 23.1 +1.1 30.5 28th 9.8 +0.7 4.0 18th 38.8 50.2 average 77%
Maydena Post Office 20.5 +0.8 27.3 13th 8.4 +0.9 3.9 18th 87.2 85.9 average 102%
Ouse Fire Station 23.3 +0.4 30.1 28th 8.9 +0.2 2.8 21st 35.2 33.7 average 104%
Central Plateau (district 96)
Butlers Gorge 17.9 +1.3 23.7 15th 6.2 +0.7 -0.4 28th 99.2 125.2 average 79%
Lake St Clair National Park 18.6 +1.4 24.3 15th 6.0 +1.0 0.5 28th 129.4 131.4 average 98%
Liawenee 16.9 +0.8 23.3 2nd 4.7 +1.0 -0.9 22nd 58.4 62.6 high 93%
West Coast (district 97)
Cape Sorell 18.4 +1.5 22.9 13th 12.2 +1.3 9.9 12th 57.0 80.8 low 71%
Hartz Mountain (Keoghs Pimple) 15.4 +0.6 23.4 28th 5.8 +0.7 2.1 17th 96.0 79.5 high 121%
Low Rocky Point 18.1   23.6 1st 11.2   7.6 7th 67.4 89.1 average 76%
Mount Read 12.6 +0.9 18.6 1st 5.0 +1.1 1.0 17th 252.8 292.2 average 87%
Scotts Peak Dam 19.9 +1.4 30.3 13th 8.6 +0.7 5.3 7th 114.6 149.1 v low 77%
Strahan Aerodrome 19.8 +0.1 27.7 13th 10.8 +1.2 6.1 12th 89.8 94.8 average 95%
Warra 17.4 +0.2 24.9 29th 7.1 +0.3 3.5 12th 114.6 137.7 low 83%
King Island (district 98)
King Island Airport 19.5 +0.8 30.2 13th 11.6 +0.6 7.0 28th 21.6 49.8 v low 43%
Flinders Island (district 99)
Flinders Island Airport 21.5 +1.3 30.6 29th 13.2 +1.4 7.6 28th 61.2 58.1 average 105%
Hogan Island 20.0   24.4 29th 13.4   10.2 26th 74.8 48.4 high 155%
Antarctica and Macquarie Island (district 300)
Macquarie Island 8.9 +1.0 10.9 30th 5.2 +0.9 1.4 12th 58.2 78.5 low 74%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Tasmania 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.

A Climate Summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 9 am on Tuesday 6 January 2015. 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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

Media
(03) 9669 4057
Enquiries