Tasmania in autumn 2018: a record wet day in the southeast, dry in the north, warm overall

Tasmanian temperatures were above average in Tasmania during autumn, especially by night. Rainfall was mixed, with record-breaking rain in the southeast in May but below-average totals in the north.

A mixed result for rain

A warm autumn overall

  • Tasmania's mean temperature for autumn was 0.51 °C above average, cooler than autumn 2017 but much warmer than autumn 2015
  • The State's mean minimum temperature was 0.68 °C above average, whilst the mean maximum temperature was 0.34 °C above average
  • Some sites in the southeast saw daytime temperatures into the low 30s during March, but at Liawenee on the Central Plateau it dipped below −5 °C on several mornings in late May

Hobart (Ellerslie Road)

  • Total rainfall for Hobart (Ellerslie Road) was 214.8 mm, which is 151% of the long-term average of 142.1 mm
  • Hobart registered 129.2 mm – more than half the autumn total – in the 24 hours to 9 am on 11 May, with almost half of that in the 3 hours between 9 pm and midnight on 10 May
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 18.7 °C, which is 1.4 °C above the long-term average of 17.3 °C. The warmest day was 30.1 °C on 17 March, and the coolest day was on 27 May when the temperature reached just 11.3 °C
  • The mean daily minimum temperature for Hobart (Ellerslie Road) was 10.3 °C, which is 1.3 °C above the long-term average of 9.0 °C. The coldest morning was 2.6 °C on 27 May, and the warmest morning was on 11 March when the minimum temperature was 18.2 °C
  • Hobart recorded wind gusts in excess of 100 km/h on five days this autumn; in most autumns there are only one or two such windy days

Further information

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Extremes in autumn 2018
Hottest day 31.3 °C at Ouse Fire Station on 10 Mar
Warmest days on average 19.6 °C at Friendly Beaches
Coolest days on average 9.0 °C at kunanyi (Mount Wellington Pinnacle)
Coldest day 0.3 °C at kunanyi (Mount Wellington Pinnacle) on 30 May
Coldest night -6.1 °C at Liawenee on 25 May
Coolest nights on average 2.1 °C at Liawenee
Warmest nights on average 13.2 °C at Hogan Island
Warmest night 21.0 °C at Flinders Island Airport on 18 Mar
Warmest on average overall 15.8 °C at Hogan Island
Coolest on average overall 5.9 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall at least 1329.6 mm at Mount Read *
Driest overall 98.4 mm at Swan Island
Wettest day 236.2 mm at kunanyi (Mount Wellington Pinnacle) on 11 May
Strongest wind gust 163 km/h at Maatsuyker Island Lighthouse on 16 Apr

* note: Some data are missing from Mount Read, and the true rainfall total is higher


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 autumn daily rainfall
New record
(mm)
Old
record
Years of
record
Opossum Bay 123.0 on 11 May 110.5 on 23 Apr 1960 88
Fern Tree (Grays Road) 163.4 on 11 May 115.6 on 19 May 1986 52
Margate (Sunnyside) 151.0 on 11 May 102.6 on 23 Mar 1983 51
Huonville (Tutton Avenue) 150.0 on 11 May 68.1 on 21 Mar 1970 49
Strathgordon (Gordon Power Station) 108.4 on 19 Mar 93.0 on 15 Apr 1998 47
Lucaston (Bakers Creek Road) 147.0 on 11 May 68.4 on 28 Mar 1997 40
kunanyi (Mount Wellington Pinnacle) 236.2 on 11 May 89.0 on 22 May 2003 38
Richmond (Strathayr) 74.2 on 11 May 55.2 on 13 Apr 2011 30
Maydena Post Office 64.0 on 11 May 51.0 on 17 Mar 1996 26
Nierinna (Cuthberts Road) 146.4 on 11 May 90.2 on 28 Mar 1997 26
Hermitage (Shannon River) 52.6 on 11 May 39.6 on 11 Apr 2011 25
Mount Seymour 71.0 on 11 May 49.8 on 24 Apr 2001 25
Yarlington (Blacks Pinnacle) 87.0 on 11 May 55.8 on 17 Apr 1996 25
Bothwell (Clyde River) 48.4 on 11 May 38.2 on 7 Mar 1998 23
Hartz Mountain (Keoghs Pimple) 82.8 on 11 May 53.0 on 13 Apr 2011 23
Judbury (Huon River) 120.4 on 11 May 46.6 on 13 Apr 2011 23
Melton Mowbray (North Stockman) 69.8 on 11 May 42.8 on 26 May 2012 22
Below Craigbourne Dam (Coal River) 100.8 on 11 May 81.0 on 15 Mar 1999 21
Ouse Fire Station 30.4 on 11 May 29.4 on 7 Mar 2004 20
Tea Tree Point 66.6 on 11 May 57.2 on 21 Mar 2003 20

 

Record highest daily rainfall for any time of year
Highest daily rainfall
in 2018 (mm)
Previous annual
wettest
Years of
record
Opossum Bay 123.0 on 11 May 110.5 on 23 Apr 1960 88
Fern Tree (Grays Road) 163.4 on 11 May 156.0 on 12 Aug 2010 52
Huonville (Tutton Avenue) 150.0 on 11 May 73.0 on 27 Dec 1998 51
Margate (Sunnyside) 151.0 on 11 May 123.2 on 14 Jan 2015 51
Lucaston (Bakers Creek Road) 147.0 on 11 May 79.0 on 27 Dec 1998 41
kunanyi (Mount Wellington Pinnacle) 236.2 on 11 May 202.0 on 19 Dec 1995 40
Judbury (Huon River) 120.4 on 11 May 50.4 on 29 Aug 2015 27
Maydena Post Office 64.0 on 11 May 62.8 on 4 Dec 2005 27
Mount Seymour 71.0 on 11 May 63.0 on 26 Jun 2009 27
Nierinna (Cuthberts Road) 146.4 on 11 May 127.2 on 4 Feb 2005 27
Below Craigbourne Dam (Coal River) 100.8 on 11 May 81.0 on 15 Mar 1999 25
Melton Mowbray (North Stockman) 69.8 on 11 May 66.6 on 27 Dec 1998 23


Record highest autumn total rainfall
New record
(mm)
Old
record
Years of
record
Average for
autumn
Huonville (Tutton Avenue) 305.4 288.4 in 1965 46 166.2

Highest autumn total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
autumn
Fort Direction 220.6 309.1 in 1960* 126.5
Lucaston (Bakers Creek Road) 305.4 324.0 in 1996 174.6
Margate (Sunnyside) 298.6 316.4 in 1996* 165.5
Nierinna (Cuthberts Road) 325.4 360.8 in 1996* 210.1

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




Summary statistics for autumn 2018
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2018
Diff
from
average
Highest for
autumn
2018
Mean for
autumn
2018
Diff
from
average
Lowest for
autumn
2018
Total for
autumn
2018
Average
for
autumn
Rank of
autumn
2018
Fraction of
autumn
average
Northern (district 91)
Cape Grim 16.7   24.8 17 Mar 11.9   6.7 10 May 155.6
Cressy Research Station 18.4 -0.2 28.4 11 Mar 6.0 +0.2 -2.9 24 May 123.6 134.0 average 92%
Devonport Airport 18.5 +0.6 28.9 11 Mar 9.3 +0.5 0.8 16 May 140.4 183.4 low 77%
Launceston (Ti Tree Bend) 19.5 +0.4 30.2 11 Mar 7.8 +0.2 -1.1 16 May 164.4 155.3 average 106%
Launceston Airport 18.2 -0.3 28.0 11 Mar 6.5 -0.3 -1.3 16 May 168.6 152.2 average 111%
Low Head 17.9 +0.2 24.1 11 Mar 11.8 +0.5 4.5 16 May 122.6 168.7 low 73%
Luncheon Hill (Forestry) 15.3 -0.6 24.8 8 Mar 8.7 +0.4 3.5 16 May 380.2 354.0 average 107%
Marrawah 16.8 -0.2 25.0 17 Mar 10.6 +0.2 6.0 10 May 223.8 258.7 average 87%
Scottsdale (West Minstone Road) 17.7 -0.3 27.1 11 Mar 7.9 -0.1 1.0 16 May 233.6 230.7 average 101%
Sheffield School Farm 16.4 -0.3 25.0 11 Mar 7.5 +0.2 -0.1 16 May
Smithton Aerodrome 17.9 0.0 24.4 17 Mar 8.3 +0.4 0.8 30 May 206.2 198.7 average 104%
Wynyard Airport 18.2 +0.5 25.4 11 Mar 7.9 +0.5 0.1 16 May 152.8 218.7 low 70%
East Coast (district 92)
Fingal (Legge Street) 19.1 +0.7 27.9 17 Mar 5.4 0.0 -4.0 25 May 172.4 146.6 high 118%
Friendly Beaches 19.6 +0.8 29.2 17 Mar 10.1 +0.1 1.7 25 May 143.8 160.6 average 90%
Lake Leake (Elizabeth River) 15.2 +0.8 23.5 10 Mar 4.8 +0.6 -4.3 25 May 160.6 202.7 average 79%
larapuna (Eddystone Point) 19.1 +1.2 26.9 17 Mar 11.6 +0.4 5.2 30 May 113.0 189.1 low 60%
Maria Island (Point Lesueur) 17.8 +0.1 26.4 17 Mar 11.7 +0.3 6.0 16 May 158.2 110.5 high 143%
Orford (Aubin Court) 18.5 +0.3 28.4 17 Mar 9.2 +0.7 2.5 25 May 186.4 159.5 average 117%
St Helens Aerodrome 19.1 +0.5 27.5 17 Mar 9.4 -0.2 2.3 25 May 183.6 169.9 average 108%
Swan Island 18.6 +0.4 24.8 17 Mar 12.8 +0.1 5.6 31 May 98.4 166.4 low 59%
Swansea (Francis Street) 19.0   28.4 17 Mar 8.9   0.2 25 May 115.4
Midlands (district 93)
Ross (The Boulevards) 18.1 +0.2 27.6 7 Mar 6.0 +0.3 -2.7 25 May 119.8 103.6 average 116%
Southeast (district 94)
Campania (Kincora) 19.2 +0.1 30.2 17 Mar 8.5 +0.8 -1.2 27 May 146.0 102.3 high 143%
Cape Bruny (Cape Bruny) 16.8 +0.2 27.3 17 Mar 10.5 +0.4 5.4 15 Apr 191.0 176.5 average 108%
Cape Bruny Lighthouse 16.4 +0.8 26.8 17 Mar 10.7 +1.0 5.8 15 Apr 200.5 230.8 average 87%
Dennes Point 17.6   29.3 17 Mar 11.0   5.3 25 May 182.8
Dover 17.5 +0.5 28.6 17 Mar 7.7 +0.4 1.1 27 May 220.8 202.2 average 109%
Dunalley (Stroud Point) 18.2   30.9 17 Mar 11.1   4.9 26 May 113.6
Grove (Research Station) 18.1 0.0 30.0 10 Mar 7.0 +1.0 -1.6 25 May 292.0 155.3 v high 188%
Hobart (Ellerslie Road) 18.7 +1.4 30.1 17 Mar 10.3 +1.3 2.6 27 May 214.8 142.1 v high 151%
Hobart Airport 18.7 +0.6 29.8 17 Mar 9.7 +1.0 1.9 27 May 124.0 112.9 average 110%
kunanyi (Mount Wellington Pinnacle) 9.0 +0.5 20.1 10 Mar 2.6 +0.3 -3.4 31 May 413.6 235.8 high 175%
Maatsuyker Island Lighthouse 14.6 +0.1 23.8 17 Mar 10.2 +0.6 4.9 15 Apr 311.0 308.2 average 101%
Melton Mowbray (North Stockman) 17.8 +0.2 28.2 17 Mar 6.8 +0.6 -3.0 27 May 157.2 96.1 v high 164%
Tasman Island 15.3 +0.1 22.7 17 Mar 10.2 +0.2 3.3 17 Apr 204.6 208.6 average 98%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 18.8 +0.7 31.0 10 Mar 7.0 +0.8 -2.7 25 May   130.2    
Maydena Post Office 16.1 -0.2 29.5 10 Mar 6.7 +1.0 -0.5 26 May 336.0 251.8 high 133%
Ouse Fire Station 18.3 -0.2 31.3 10 Mar 6.6 +1.1 -3.4 27 May 132.0 98.0 high 135%
Central Plateau (district 96)
Butlers Gorge 13.6 +0.4 25.8 10 Mar 4.4 +1.0 -3.9 21 Mar 525.2 405.2 high 130%
Liawenee 12.9 +0.4 22.9 4 Apr 2.1 +0.2 -6.1 25 May 236.0 220.6 average 107%
West Coast (district 97)
Cape Sorell 16.6 +1.0 24.1 10 Mar 11.1 +0.8 5.4 25 May 293.2 320.0 average 92%
Hartz Mountain (Keoghs Pimple) 11.3 -0.2 25.1 10 Mar 4.8 0.0 -0.4 15 Apr 359.6 230.2 v high 156%
Low Rocky Point 16.2   24.9 17 Mar 10.6   4.9 21 Mar 375.6 335.7 high 112%
Scotts Peak Dam 15.1 +0.1 28.5 10 Mar 7.2 +0.3 2.4 27 May 483.8 421.2 high 115%
Strahan Aerodrome 17.0 +0.1 25.7 10 Mar 9.3 +0.7 2.2 21 Mar 489.8 373.4 high 131%
Warra 13.9 0.0 26.4 10 Mar 6.0 0.0 -1.5 27 May 453.8 407.0 average 111%
King Island (district 98)
King Island Airport 18.1 +0.2 28.6 17 Mar 11.6 +0.9 4.3 14 May 198.8 195.3 average 102%
Flinders Island (district 99)
Flinders Island Airport 19.0 +0.2 26.6 17 Mar 11.5 +0.7 2.2 27 May 129.8 186.9 low 69%
Hogan Island 18.5 +0.4 27.3 17 Mar 13.2 +0.2 7.9 15 Apr 145.4 152.3 average 95%
Note: From 2017, information about Macquarie Island can be found in the climate summary for the Remote Islands and Antarctica

Notes

The Seasonal climate summary, generally published on the first working day of each month, lists 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. 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 Friday 1 June 2018. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

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
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