Tasmania in June 2012: a cold and wet end

Tasmania's weather in June 2012 was fairly typical for this time of the year. Overall, daytime temperatures were slightly cooler than usual while nights were slightly cooler than usual in the north and warmer than usual in the south. Rainfall was near average in most areas.

  • Coldest June day in many years on the 25th
  • Snow to 400 metres on the 25th
  • -10.6 °C at Liawenee on the 27th

Days: cooler than usual after two cold spells 

Averaged over the month daytime temperatures for June were generally cooler than usual, mostly by half to one degree. The coldest period occurred between the 19th and 27th when several cold fronts crossed Tasmania. Temperatures in the south and west struggled to reach 10 °C on the 21st, 22nd and 25th, and in the north and east the highest temperatures were around 11 or 12 °C. Many areas had their coldest June day in several years including Dover (6.4 °C) and Lake St Clair (1.5 °C) on the 25th, where it hadn't been this cold in June since the mid-1990s. Mount Wellington reached only -2.9 °C on the 25th, making it Tasmania's coldest day for the month.

It was also cold from the 2nd to 7th as southerly winds blew across the state. Cressy's temperature didn't rise above 5.3 °C on the 7th. Persistent fog in the Derwent Valley on the 13th and 16th led to locally cold areas, with Bushy Park reaching just 4.9 °C on the 13th.

Though the month was cool overall, daytime temperature were mostly average or above on the 1st, from the 8th to 18th and on the 29th. The warmest days were the 1st, 8th, 13-14th and 29th, with the highest temperature of 17.5 °C recorded at Bushy Park on the 1st and Bicheno on the 8th.

Nights: cold near the end but near average overall

Very cold nights were common from the 20th to 28th. Several sites had their coldest June night for many years on the 20th, 23rd, 27th or 28th when temperatures in some areas fell to almost 10 degrees below average. On the 27th Fingal (-6.7 °C) and Ross (-6.5 °C) had their coldest June night in around 15 years and Liawenee fell to -10.6 °C, Tasmania's lowest June temperature since 1983. Liawenee was also very cold on the 28th, falling to -9.7 °C.

For the rest of the month, overnight temperatures were generally warmer then usual in the south but more varied elsewhere. The warmest nights occurred on the 14th, 15th and 29th in moist north to northeasterly airstreams ahead of cold fronts. Minima above 10 °C were common in the north and east. Burnie had the state's warmest night, not dropping below 12.9 °C on the 14th. The lack of cold nights in the south from the 1st to 19th was unusual. Maastuyker Island, for example, had 12 nights in a row when the temperature didn't drop below 8 °C; this has only occurred 4 times in June since records began in 1957. 

Averaged over the month, overnight temperatures were generally within half a degree of average with slightly cooler than usual conditions in the north and slightly warmer than usual conditions in the south.

Rain: mainly in the second half of the month

There was some rain in Bass Strait and the far northeast on the 3-4th but otherwise most of Tasmania's rain in June came from cold fronts during the second half of the month. Monthly rainfall totals were near average in most areas. Mount Read was the wettest location, with at least 392 mm (it is likely some snow was lost). The driest areas were the Midlands, Derwent Valley and around Richmond where totals were around 30 mm or less. Melton Mowbray was the driest site with 23 mm.

The highest daily rainfall total was 68.6 mm at Gray on the 4th, when a low pressure system and southeasterly airflow brought rain to the northeast and Bass Strait. Other high daily totals included 52.6 mm at Eaglehawk Neck on the 15th and 61.4 mm at Mount Read on the 17th, both from cold fronts.

Strong winds, large swells and snow

Strong and gusty winds affected Tasmania around the 4th and 25th. Overnight on the 4-5th, south to southeast winds gusted to around 80 to 110 km/h in the northeast as a low pressure system moved nearby. Several trees were blown over and carport roofs dislodged. Winds were again strong and gusty overnight on the 24-25th as a low passed near the south of the state, causing gusts to reach 148 km/h at Maatsuyker Island and 146 km/h on Mount Wellington.

Swells were significant in Tasmania's south and east on the 5th, reaching at least 7.5 metres at Maatsuyker Island, 6 metres at Cape Bruny and 3 metres at Scamander. There were no reports of damage, but large swells combined with a high tide to push water amongst the dunes in the Clifton Beach area.

Snow fell in two bursts during the month. Wintery weather across the state from the 18th to 26th brought snowfalls to 700 metres on most days, settling as low as 400 metres in the south on the 25th. There was also snow on the higher peaks earlier in the month between the 2nd and 5th.

Hobart: mild start, cold end, drier than usual

Apart from a few days from the 3rd to 6th, temperatures in Hobart were relatively mild until the 18th. Four days exceeded 15 °C and five nights didn't drop below 8 °C. There was a distinct change on the 19th with several cold fronts crossing the state during the rest of the month. The mornings of the 20th, 22nd, 27th and 28th all dropped below 2 °C bringing plenty of frost and snow persisted on the mountain for much of the time. The coldest day was the 25th, reaching just 8.0 °C.

Overall, the average maximum temperature of 12.5 °C and the average minimum temperature of 5.3 °C were slightly warmer than usual.

Hobart was drier than usual for June with a total of 33 mm, about 60 % of normal. Most of the rain fell overnight on the 23-24th and early on the 25th. This was also the windiest period of the month with gusts reaching 76 km/h in the city and 117 km/h at Droughty Hill on the eastern shore.

The first six months of 2012: wet and warm

For the first six months of 2012, rainfall was above average across Tasmania except for parts of the northeast. Cape Grim has had its wettest January to June on record with a total of 529 mm, about 65 mm higher than the previous record set in 2011.

Average daytime temperatures for January to June were near or slightly above normal in most areas but average overnight temperatures were much warmer than usual, especially around the southeast and Derwent Valley.

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Extremes in June 2012
Hottest day 17.5 °C at Bushy Park (Bushy Park Estates) on the 1st
and at Bicheno (Council Depot) on the 8th
Warmest days on average 14.1 °C at Burnie (Round Hill)
Coolest days on average 2.5 °C at Mount Wellington
Coldest day -2.9 °C at Mount Wellington on the 25th
Coldest night -10.6 °C at Liawenee on the 27th
Coolest nights on average -1.1 °C at Mount Wellington
Warmest nights on average 8.9 °C at Swan Island
Warmest night 12.9 °C at Burnie (Round Hill) on the 14th
Warmest on average overall 11.3 °C at Swan Island
Coolest on average overall 0.7 °C at Mount Wellington
Wettest overall 392.0 mm at Mount Read *
Driest overall 23.0 mm at Melton Mowbray (North Stockman)
Wettest day 68.6 mm at Gray (Dalmayne Rd) on the 4th
Highest wind gust 148 km/h at Maatsuyker Island Lighthouse on the 25th

* The true total at Mount Read is probably higher, as it is likely some snow was lost.


Maps
Observed Anomaly Decile 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





Summary statistics for June 2012
Maximum temperatures
for June
(°C)
Minimum temperatures
for June
(°C)
Rainfall
for June
(millimetres)
Mean for
June
2012
Diff
from
average
Highest for
June
2012
Mean for
June
2012
Diff
from
average
Lowest for
June
2012
Total for
June
2012
Average
for
June
Rank of
June
2012
Fraction of
June
average
Northern (district 91)
Bridport (Sea View Villas) 13.5 -0.5 16.0 1st 5.6 -0.7 0.1 26th 59.8 85.8 low 70%
Burnie (Round Hill) 14.1 +0.6 16.5 9th 7.7 +1.0 3.1 26th 68.0 102.4 low 66%
Cape Grim 12.4   15.4 1st 8.6   5.7 5th 103.4
Cape Grim BAPS (Comparison) 12.5 -0.5 16.2 1st 8.5 -0.2 5.9 5th 113.2 82.7 high 137%
Cressy Research Station 11.7 -0.6 15.7 8th 1.9 +0.2 -5.2 27th 74.8 64.2 average 117%
Devonport Airport 13.4 0.0 16.4 8th 4.7 -0.4 -1.7 27th 55.0 78.4 low 70%
Launceston (Ti Tree Bend) 13.2 +0.1 16.6 11th 2.8 -0.1 -3.5 27th 63.4 68.9 average 92%
Launceston Airport 11.9   15.5 13th 2.5   -5.6 27th 69.0
Low Head 13.3 -0.2 15.1 1st 7.2 -0.3 1.7 27th 60.4 72.8 average 83%
Luncheon Hill (Forestry) 10.3 -0.9 13.6 1st 5.1 -0.5 1.3 5th 145.8 147.2 average 99%
Marrawah 12.5 -0.3 15.2 1st 7.6 +0.2 4.5 20th 119.6 122.0 average 98%
Scottsdale (West Minstone Road) 12.0 -0.6 14.7 13th 4.2 0.0 -2.8 26th 86.4 103.6 average 83%
Sheffield School Farm 11.2 -0.4 14.7 8th 3.7 -0.2 -1.6 20th 125.2 108.5 average 115%
Smithton Aerodrome 13.1 -0.6 16.2 1st 5.3 +0.4 -1.4 26th 86.8 92.5 average 94%
Wynyard Airport 13.4 0.0 15.7 8th 4.1 0.0 -2.5 26th 84.6 109.6 average 77%
East Coast (district 92)
Bicheno (Council Depot) 13.6 -0.9 17.5 8th 6.7 +0.1 1.0 20th 46.8 60.6 average 77%
Eddystone Point 14.0 +0.2 17.1 12th 7.7 -0.3 2.9 27th 70.4 74.4 average 95%
Fingal (Legge Street) 11.7 -1.0 15.2 29th 0.4 -0.7 -6.9 27th 40.4 64.7 average 62%
Friendly Beaches 12.9 -1.2 16.2 8th 6.5 +0.1 -0.6 27th 58.4 38.7 average 151%
Lake Leake (Elizabeth River) 8.1 -0.9 11.8 13th 0.7 +0.1 -6.8 27th 52.9 86.4 average 61%
Maria Island (Point Lesueur) 12.3   15.3 8th 7.9   4.4 20th 40.6
Orford (Aubin Court) 12.4 -0.9 16.7 29th 4.8 +0.7 -1.5 28th 48.8 53.1 average 92%
Scamander 13.4 -1.0 16.2 29th 4.9 -0.6 0.4 28th 62.3 54.0 high 115%
St Helens Aerodrome 13.4 -0.6 16.4 8th 5.1 -0.4 -0.8 27th 77.6 58.7 high 132%
Swan Island 13.7 -0.3 16.4 1st 8.9 -0.3 4.6 23rd 32.8 56.1 low 58%
Swansea (Francis Street) 13.1   17.0 1st 4.8   -2.1 28th 49.9
Midlands (district 93)
Ross (The Boulevards) 11.1 -0.6 14.8 13th 1.6 -0.2 -6.5 27th 36.2 40.7 average 89%
Southeast (district 94)
Bull Bay (Lauriston) 12.3 -0.3 15.0 29th     1.8 28th 34.6 46.8 average 74%
Campania (Kincora) 12.6 -1.1 16.3 1st 3.6 -0.1 -2.9 28th 26.4 42.2 average 63%
Cape Bruny Lighthouse 11.7 +0.1 15.1 29th 6.7 0.0 0.7 25th 72.0 90.3 average 80%
Dover 11.8 -0.8 15.7 1st 3.6 -0.2 -1.3 28th 53.4 78.7 average 68%
Dunalley (Stroud Point) 12.4   17.3 29th 6.7   0.8 28th 43.0
Geeveston (Cemetery Road) 11.7 -0.6 16.4 13th 2.6 +0.4 -3.2 28th 67.2 72.7 average 92%
Grove (Research Station) 12.2   16.7 13th 1.5   -4.1 27th 45.0
Hobart (Ellerslie Road) 12.5 +0.5 17.2 1st 5.3 +0.1 0.9 28th 33.2 54.1 low 61%
Hobart Airport 12.6 -0.3 16.6 1st 4.6 0.0 -0.6 28th 34.4 32.8 high 105%
Maatsuyker Island Lighthouse 11.5 +0.1 16.6 13th 7.5 +0.3 4.1 23rd 88.4 118.1 low 75%
Melton Mowbray (North Stockman) 11.0 -0.9 15.1 1st 2.2 +0.1 -4.2 20th 23.0 34.9 average 66%
Mount Wellington 2.5 -1.1 8.4 18th -1.1 -0.3 -5.1 25th
Tasman Island 10.5 -0.9 14.7 1st 6.7 -0.6 2.8 28th 83.2
Tunnack Fire Station 9.0 -1.0 13.1 1st 2.2 0.0 -3.7 27th 50.8 64.9 average 78%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 11.8 +0.6 17.5 1st 1.9 -0.2 -2.7 20th 29.8 48.4 low 62%
Maydena Post Office 10.3 -0.5 13.9 29th 3.0 +0.5 -1.0 20th 90.6 99.9 average 91%
Ouse Fire Station 11.6 -0.3 16.5 1st 1.5 +0.2 -4.5 20th 32.8 44.3 average 74%
Tarraleah Village 8.4 -0.5 11.8 9th 1.6 +0.9 -2.4 14th 84.1 102.5 average 82%
Central Plateau (district 96)
Butlers Gorge 7.5 -0.2 12.3 13th 0.7 +0.5 -5.7 20th 134.2 153.7 average 87%
Lake St Clair National Park 6.7 -1.0 10.4 13th 0.6 +0.4 -4.3 20th 196.8 173.8 average 113%
Liawenee 4.7 -1.8 9.1 18th -0.9 +0.2 -10.6 27th 134.8 113.1 average 119%
West Coast (district 97)
Cape Sorell 12.7 +0.5 15.9 14th 8.2 +0.6 4.4 22nd 98.2 141.3 low 69%
Hartz Mountain (Keoghs Pimple) 5.1 -2.0 10.5 13th 1.3 -0.9 -2.2 25th
Low Rocky Point 12.5   16.5 14th 7.1   3.6 20th 117.6 130.3 average 90%
Mount Read 3.4 -1.3 6.3 14th 0.2 -0.7 -2.9 26th 392.0* 346.3 high 113%
Scotts Peak Dam 9.5 -0.2 14.2 13th 3.4 -0.6 0.1 28th 198.6 191.6 average 104%
Strahan Aerodrome 12.4 -0.2 16.6 14th 5.6 +0.1 0.4 11th 150.2 153.2 average 98%
Strathgordon Village 9.7 +0.2 13.2 14th 2.9 -0.9 0.0 28th 207.0 217.0 average 95%
Warra 8.3   11.9 13th 2.7   -2.6 20th 134.0
King Island (district 98)
King Island Airport 13.2 -0.7 16.2 1st 8.1 0.0 3.4 11th 94.4 98.7 average 96%
Flinders Island (district 99)
Flinders Island Airport 13.9 -0.2 16.6 29th 6.7 -0.3 -1.7 26th 55.6 70.8 average 79%
Antarctica and Macquarie Island (district 300)
Macquarie Island 4.5 -0.5 6.9 29th 0.5 -1.1 -4.4 5th 62.8 76.3 average 82%

* The true total at Mount Read is probably higher, as it is likely some snow was lost.



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.

This statement has been prepared based on information available at 9 am on Monday 2 July 2012. 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