Friday, 1 March 2013 - Seasonal Climate Summary for Tasmania - Product code IDCKGC27R0
Tasmania in summer 2012-13: A warm and dry summer
Summer 2012–13 brought record high temperatures and relatively little rain to Tasmania.
- Hottest day on record at sites including Hobart
- Warmer than average overall
- Below average summer rain for most
- Driest summer in 10 years for sites in the southeast
Monthly summaries have also been prepared for December, January and February. The extreme heat that affected large parts of Australia in late December and early January is discussed in a Special Climate Statement.
Record summer heat
Summer 2012–13 saw a number of very warm days, with the most notable on 4 January when Hobart reached 41.8 °C and several other highest summer temperature records were broken in the East, Southeast and Derwent Valley districts. At the other extreme, (Maydena equalled its coldest summer day on record) on 4 December, but through the season there was more warm weather than cold. Some sites recorded their highest summer mean maximum temperature on record, and overall summer mean maximum temperatures were up to 2 degrees above average.
Mild nights, but a few cold ones too
Minimum temperatures were warmer than average in summer, by up to one degree in most areas. The highest minimum temperatures coincided with the hot days around 4 January, and also in the second half of February when minima above 15 °C were common.
Most nights were mild, but there were a few cold ones; the coldest were around 4 and 5 December, and 2 February where temperatures fell below 8 °C in most areas. Mount Wellington's -2.7 °C on the morning of 5 December was the coldest temperature for this summer. Overall, summer mean minimum temperatures were about a degree above average.
Below average summer rain, especially in the southeast
Summer rainfall was below average in most areas of Tasmania, especially in the southeast where many sites observed their driest summer since the record dry 2002–03. Though there were many days of rain in the southeast, daily totals were usually small; the wettest day was on 31 January when a cold front brought falls of up to around 20 mm, with isolated falls up to 30 mm.
Elsewhere in the state, the heaviest rainfall event was overnight on 14 December, when a low produced heavy rainfall in the northwest. Ulverstone (Knights Road) recorded 78 mm over the 24 hours to 9am on the 15th, the wettest day of summer 2012–13 and Ulverstone's wettest December day on record.
Dennes Point in the southeast was Tasmania's driest location with a summer total of only 52 mm. Lake Margaret Power Station in the west was the wettest site with 472 mm.
Warmest summer days on record in Hobart
Hobart's mean summer maximum temperature of 23.3 °C was its warmest on record, beating the previous record of 23.2 °C set in the summer of 2000–01 and 1899–1900. There were more warm days than cold, and more hot days than is usual for summer. In addition to observing its hottest day on record with 41.8 °C on 4 January, the temperature rose above 30 degrees on 8 days, a few days more than the summer average of 5.
Minimum temperatures were also warmer than average, by 1.4 °C. There were many warmer than average nights; the temperature did not fall below 16 °C on 16 days, almost triple Hobart's summer average of 6 such mild nights. The highest minimum temperature was 23.4 °C on 4 January, Hobart's highest January minimum temperature on record (but short of the 24.7 °C on 4 February 1912).
Hobart recorded 57 mm of rain, about a third of the summer average of 145 mm. This is Hobart's driest summer since the record dry 2002–03 when only 27 mm was recorded. At least 100 mm of rain has fallen every summer since then. February was the wettest month with 23 mm, of which 10 mm came from a front that crossed on 31 January.
There were many bushfires in summer, the most destructive of those in January. Hundreds of properties were destroyed, with tens of thousand hectares of land burnt, and thousands of people left without power.
|Extremes in summer 2012-13|
|Hottest day||41.8 °C at Hobart (Ellerslie Road) on 4 Jan 2013|
|Warmest days on average||25.3 °C at Cressy Research Station|
|Coolest days on average||13.9 °C at Mount Wellington|
|Coldest day||2.4 °C at Mount Wellington on 4 Dec 2012|
|Coldest night||-2.7 °C at Mount Wellington on 5 Dec 2012|
|Coolest nights on average||4.7 °C at Mount Wellington|
|Warmest nights on average||14.7 °C at Swan Island|
|Warmest night||23.4 °C at Hobart (Ellerslie Road) on 4 Jan 2013|
|Warmest on average overall||18.5 °C at Larapuna (Eddystone Point)|
|Coolest on average overall||9.3 °C at Mount Wellington|
|Wettest overall||471.7 mm at Lake Margaret Power Station|
|Driest overall||52.4 mm at Dennes Point|
|Wettest day||78.0 mm at Ulverstone (Knights Road) on 15 Dec 2012|
|Highest wind gust||
143 km/h at Hogan Island on 5 Dec 2012|
137 km/h at Mount Wellington on 3 Jan 2013
Click on a map to show it full size in a pop-up window
|Lowest total summer rainfall for at least 20 years|
for summer 2012-13 (mm)
Most recent summer
at least this dry
|Waratah (Mount Road)||170.6||108.5||in 1960*||29||341.8|
|Taroona (Taroona Crescent)||61.2||49.6||in 1983*||26||161.1|
|Memana (Babel Farm)||78.2||63.1||in 1984*||23||152.7|
* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported.
|Record highest summer temperature|
in summer 2012-13 (°C)
|Hobart (Ellerslie Road)||41.8||on 4 Jan 2013||40.8||on 4 Jan 1976||128||21.2|
|Larapuna (Eddystone Point)||36.5||on 4 Jan 2013||36.1||on 16 Jan 1960||56||20.5|
|Hobart Airport||40.3||on 4 Jan 2013||40.1||on 3 Jan 1991||55||21.8|
|Bushy Park (Bushy Park Estates)||40.3||on 4 Jan 2013||39.5||on 20 Jan 1973||53||23.3|
|Orford (Aubin Court)||38.8||on 4 Jan 2013||= 38.8||on 15 Feb 1982||45||21.4|
|Geeveston (Cemetery Road)||40.0||on 4 Jan 2013||39.5||on 26 Jan 1994||29||21.1|
|Dover||39.6||on 4 Jan 2013||39.0||on 3 Jan 1991||24||20.1|
|Bull Bay (Lauriston)||41.0||on 4 Jan 2013||38.5||on 21 Jan 1997||22||20.7|
|Maydena Post Office||37.3||on 4 Jan 2013||37.2||on 11 Jan 2010||21||21.3|
|Record lowest summer daily maximum temperature|
Lowest daily maximum
in summer 2012-13 (°C)
|Maydena Post Office||9.4||on 4 Dec 2012||= 9.4||on 27 Dec 2004||21||21.3|
|Record highest summer mean daily maximum temperature|
Mean daily maximum
for summer 2012-13 (°C)
|Hobart (Ellerslie Road)||23.3||23.2||in 2000||130||21.2|
|Larapuna (Eddystone Point)||23.2||23.1||in 2009||53||20.5|
|Fingal (Legge Street)||24.4||= 24.4||in 2000||26||22.5|
|Dover||21.2||= 21.2||in 2000||22||20.1|
|Summary statistics for summer 2012-13|
|Northern (district 91)|
|Bridport (Sea View Villas)||21.6||+0.3||28.9||25 Feb 2013||12.1||-0.4||4.2||5 Dec 2012||98.8||128.2||average||77%|
|Burnie (Round Hill)||22.0||+1.4||31.4||5 Jan 2013||12.8||+0.4||5.6||5 Dec 2012||127.8||152.8||average||84%|
|Cape Grim||19.0||30.0||4 Jan 2013||13.3||7.5||5 Dec 2012||88.2|
|Cape Grim BAPS (Comparison)||19.4||+0.8||29.9||4 Jan 2013||13.2||+0.3||7.3||5 Dec 2012||103.4||116.5||average||89%|
|Cressy Research Station||25.3||+1.0||36.4||4 Jan 2013||9.4||-0.3||2.0||2 Feb 2013||99.0||104.7||average||95%|
|Devonport Airport||21.7||+0.9||26.4||8 Jan 2013||12.1||+0.3||3.8||5 Dec 2012||108.6||132.9||average||82%|
|Launceston (Ti Tree Bend)||24.7||+0.9||33.7||4 Jan 2013||11.9||+0.2||4.5||6 Dec 2012||99.5||123.4||average||81%|
|Launceston Airport||24.4||34.3||4 Jan 2013||10.1||2.3||17 Dec 2012||101.0|
|Low Head||20.2||+0.1||24.9||4 Jan 2013||14.0||+0.2||6.8||5 Dec 2012||83.6||117.4||low||71%|
|Luncheon Hill (Forestry)||20.8||+0.7||33.5||4 Jan 2013||10.3||+0.4||4.2||5 Dec 2012||174.8||220.8||low||79%|
|Marrawah||20.5||+0.8||33.2||4 Jan 2013||12.4||+0.7||7.0||4 Dec 2012||118.4||157.7||low||75%|
|Scottsdale (West Minstone Road)||23.1||+0.9||34.1||4 Jan 2013||10.5||+0.1||2.7||6 Dec 2012||115.2||164.2||low||70%|
|Sheffield School Farm||21.7||+0.6||31.2||4 Jan 2013||10.1||-0.1||2.5||5 Dec 2012|
|Smithton Aerodrome||21.5||+0.6||29.0||25 Feb 2013||10.5||-0.3||3.0||15 Jan 2013||102.0||135.5||low||75%|
|East Coast (district 92)|
|Bicheno (Council Depot)||22.0||+1.0||38.1||4 Jan 2013||13.2||+0.7||6.7||5 Dec 2012||112.1||180.3||average||62%|
|Fingal (Legge Street)||24.4||+1.9||38.1||4 Jan 2013||9.6||-0.1||1.9||17 Dec 2012||89.4||132.4||low||68%|
|Friendly Beaches||23.4||+1.0||40.0||4 Jan 2013||12.9||+0.2||6.4||5 Dec 2012||146.0||162.9||average||90%|
|Lake Leake (Elizabeth River)||19.8||+1.2||32.1||4 Jan 2013||8.1||+0.3||0.2||2 Feb 2013||122.9||172.0||low||71%|
|Larapuna (Eddystone Point)||23.2||+2.7||36.5||4 Jan 2013||13.7||+0.3||6.6||5 Dec 2012||132.6||152.2||average||87%|
|Maria Island (Point Lesueur)||21.3||35.2||4 Jan 2013||13.3||7.3||5 Dec 2012||138.6|
|Orford (Aubin Court)||22.5||+1.1||38.8||4 Jan 2013||12.0||+0.5||5.5||5 Dec 2012||107.6||158.3||low||68%|
|Scamander||22.3||+1.0||38.5||4 Jan 2013||13.0||+0.7||6.0||5 Dec 2012||106.8||161.4||average||66%|
|St Helens Aerodrome||22.7||+1.0||36.5||4 Jan 2013||12.9||+0.3||4.9||5 Dec 2012||112.6||165.6||low||68%|
|Swan Island||21.0||+0.7||29.4||4 Jan 2013||14.7||+0.3||6.7||5 Dec 2012||75.6||135.5||low||56%|
|Swansea (Francis Street)||23.4||39.6||4 Jan 2013||11.8||5.0||5 Dec 2012||99.0|
|Midlands (district 93)|
|Ross (The Boulevards)||24.4||+0.7||36.3||4 Jan 2013||9.9||0.0||1.2||5 Dec 2012||99.0||123.5||average||80%|
|Southeast (district 94)|
|Bull Bay (Lauriston)||21.7||+1.0||41.0||4 Jan 2013||12.3||+0.5||6.0||4 Dec 2012||71.4||152.1||low||47%|
|Campania (Kincora)||24.7||+1.1||41.1||4 Jan 2013||11.4||+0.6||4.9||2 Feb 2013||74.6||104.7||low||71%|
|Cape Bruny (Cape Bruny)||20.0||+0.8||38.0||4 Jan 2013||11.9||+0.2||6.0||5 Dec 2012||113.6||164.4||low||69%|
|Cape Bruny Lighthouse||19.3||+1.4||37.2||4 Jan 2013||12.0||+0.8||5.0||9 Jan 2013||120.1||194.8||low||62%|
|Dennes Point||22.0||40.5||4 Jan 2013||12.7||6.4||5 Dec 2012||52.4|
|Dover||21.2||+1.1||39.6||4 Jan 2013||9.7||-0.1||3.0||5 Dec 2012||123.2||174.8||low||70%|
|Dunalley (Stroud Point)||22.0||34.4||3 Jan 2013||13.4||5.8||5 Dec 2012||61.2|
|Geeveston (Cemetery Road)||22.1||+1.0||40.0||4 Jan 2013||10.2||+0.7||2.9||26 Dec 2012||93.2||176.5||v low||53%|
|Grove (Research Station)||23.3||40.9||4 Jan 2013||9.0||1.5||10 Dec 2012||82.7|
|Hobart (Ellerslie Road)||23.3||+2.1||41.8||4 Jan 2013||13.0||+1.4||6.8||2 Feb 2013||56.8||144.0||v low||39%|
|Hobart Airport||23.5||+1.7||40.3||4 Jan 2013||12.3||+0.7||6.0||5 Dec 2012||67.0||129.4||low||52%|
|Maatsuyker Island Lighthouse||17.1||+0.4||31.7||18 Feb 2013||11.3||+0.8||5.6||4 Dec 2012||180.8||239.7||low||75%|
|Melton Mowbray (North Stockman)||23.4||+0.4||39.2||4 Jan 2013||9.9||+0.1||2.0||10 Dec 2012||79.4||102.4||low||78%|
|Mount Wellington||13.9||+1.2||29.5||4 Jan 2013||4.7||+0.4||-2.7||5 Dec 2012|
|Tasman Island||18.0||+0.7||37.7||4 Jan 2013||11.2||+0.2||4.9||5 Dec 2012||144.6||182.5||low||79%|
|Tunnack Fire Station||21.6||+0.9||36.3||4 Jan 2013||8.2||-0.2||0.0||23 Jan 2013||124.8||144.6||low||86%|
|Derwent Valley (district 95)|
|Bushy Park (Bushy Park Estates)||25.0||+1.7||40.3||4 Jan 2013||10.0||+0.3||2.6||10 Dec 2012||57.0||126.3||v low||45%|
|Maydena Post Office||21.7||+0.4||37.3||4 Jan 2013||8.4||0.0||1.2||10 Dec 2012||127.6||208.2||v low||61%|
|Ouse Fire Station||24.9||+0.4||39.9||4 Jan 2013||9.8||+0.2||1.5||10 Dec 2012||61.6||92.6||low||67%|
|Central Plateau (district 96)|
|Butlers Gorge||18.6||+0.5||32.3||4 Jan 2013||6.4||+0.4||-0.3||2 Feb 2013||201.0||302.2||low||67%|
|Lake St Clair National Park||18.8||+0.2||32.8||4 Jan 2013||6.1||+0.3||-0.6||2 Feb 2013||245.0||311.4||low||79%|
|Liawenee||18.4||+0.9||30.6||4 Jan 2013||4.9||+0.3||-1.8||10 Dec 2012||100.2||161.9||low||62%|
|West Coast (district 97)|
|Cape Sorell||19.9||+2.0||27.3||4 Jan 2013||12.6||+1.0||6.2||5 Dec 2012||180.8||218.2||low||83%|
|Hartz Mountain (Keoghs Pimple)||16.6||-0.1||33.6||4 Jan 2013||6.6||+0.1||-0.4||5 Dec 2012||142.0||197.7||low||72%|
|Low Rocky Point||19.7||32.5||4 Jan 2013||11.6||6.9||5 Dec 2012||245.2||244.1||average||100%|
|Scotts Peak Dam||20.9||+0.9||35.1||4 Jan 2013||9.1||+0.2||2.3||5 Dec 2012||312.6||324.2||average||96%|
|Strahan Aerodrome||21.1||+0.8||35.3||4 Jan 2013||10.7||+0.4||5.0||5 Dec 2012||250.2||241.9||average||103%|
|Strathgordon Village||19.4||+0.7||34.8||4 Jan 2013||9.2||+0.1||2.0||10 Dec 2012||338.3||456.1||low||74%|
|Warra||19.2||35.7||4 Jan 2013||7.7||0.9||26 Dec 2012||276.4|
|King Island (district 98)|
|King Island Airport||21.3||+1.1||37.8||4 Jan 2013||12.8||+0.7||5.3||15 Jan 2013||85.4||119.2||low||72%|
|Flinders Island (district 99)|
|Flinders Island Airport||22.7||+1.1||38.6||4 Jan 2013||13.9||+1.0||4.8||10 Dec 2012||79.1||142.5||v low||56%|
|Antarctica and Macquarie Island (district 300)|
|Macquarie Island||8.5||+0.1||11.2||10 Jan 2013||5.1||+0.1||1.8||13 Feb 2013||314.6||248.8||v high||126%|
A Seasonal 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.
This statement has been prepared based on information available at 10 am on Friday 1 March 2013. 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
(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 being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.