Tasmania in summer 2020-21: wet across the north

Rainfall was above average across northern Tasmania and close to average elsewhere. Temperatures were close to average in most parts but nights were warmer than average in the north-east.

Wettest summer in 10 years

  • Summer rainfall was 19% above average for the state overall.
  • It was Tasmania's highest summer rainfall since 2010–11.
  • Pockets of the north had summer rainfall totals in the wettest 10% of records.
  • The state's highest daily rainfall this summer, 125.0 mm, was recorded at Mathinna (Fingal Road) on 21 December when a low pressure system moved across Bass Strait..
  • December was wetter than average in the north-east, but close to average elsewhere; February was wetter than average in the far north-east and January's rainfall was close to average for the state as a whole, but wetter than average across the north.
  • Several sites had their highest summer daily rainfall on record on 6 February when a complex low pressure system, cold front and pre-frontal trough tracked over Tasmania.
  • A few sites had their highest total summer rainfall on record and others their wettest summer for at least 20 years.

Coolest summer days on average in 10 years

Hobart (Ellerslie Road)

  • Total rainfall for Hobart (Ellerslie Road) was 153.0 mm, which is 107% of the long-term average of 142.8 mm.
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 21.9 °C, which is 0.6 °C above the long-term average of 21.3 °C.
  • The warmest day was 37.5 °C on 25 January, and the coolest day was on 16 December when the temperature reached 15.5 °C.
  • The mean daily minimum temperature for Hobart (Ellerslie Road) was 12.2 °C, which is 0.5 °C above the long-term average of 11.7 °C.
  • The coldest morning was 6.3 °C on 20 January, and the warmest morning was on 15 December when the minimum temperature was 20.7 °C.

Further information

Media
(03) 9669 4057

Extremes in summer 2020-21
Hottest day 38.0 °C at Dover on 11 Jan 2021
Warmest days on average 23.6 °C at Cressy Research Station
Coolest days on average 12.3 °C at kunanyi (Mount Wellington Pinnacle)
Coldest day 2.9 °C at Mount Read on 6 Dec 2020
Coldest night -4.0 °C at Liawenee on 20 Jan 2021
Coolest nights on average 3.8 °C at kunanyi (Mount Wellington Pinnacle)
Warmest nights on average 14.2 °C at Bicheno (Council Depot)
14.2 °C at Swan Island
Warmest night 21.1 °C at Hobart Airport on 15 Dec 2020
Warmest on average overall 17.6 °C at Launceston (Ti Tree Bend)
Coolest on average overall 8.0 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall 671.2 mm at Mount Read
Wettest day 125.0 mm at Mathinna (Fingal Road) on 21 Dec 2020
Strongest wind gust 161 km/h at Maatsuyker Island Lighthouse on 2 Dec 2020

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 summer daily rainfall
New record
(mm)
Old
record
Years of
record
Mauriceton (Jordan River) 67.0 on 6 Feb 2021 55.9 on 22 Feb 1969 58
Mount Dromedary 69.4 on 6 Feb 2021 44.6 on 14 Jan 2015 23
Liawenee 75.2 on 6 Feb 2021 73.8 on 29 Jan 2016 22



Record highest summer total rainfall
New record
(mm)
Old
record
Years of
record
Average for
summer
Deloraine Railway Bridge (Meander River) 225.4 223.2 in 2015 21 118.3
Sheffield School Farm 329.4 289.8 in 2003 21 161.8
Ross (Macquarie River) 160.6 = 160.6 in 2017 20 94.9

Highest summer total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
summer
larapuna (Eddystone Point) 290.0 311.2 in 1976* 152.1
Scottsdale (West Minstone Road) 285.0 291.8 in 1985 164.6
Lake Leake (Elizabeth River) 227.2 318.0 in 1995 170.1
Melton Mowbray (North Stockman) 163.2 184.0 in 1998 105.0

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




Record highest summer daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Bicheno (Council Depot) 19.5 on 19 Feb 2021 = 19.5 on 8 Feb 2018 47 12.7



Record highest summer mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
summer
Bicheno (Council Depot) 14.2 = 14.2 in 2015 43 12.7



Lowest summer mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
summer
Orford (Aubin Court) 11.2 10.8 in 1995 11.6



Summary statistics for summer 2020-21
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
summer
2020-21
Diff
from
average
Highest for
summer
2020-21
Mean for
summer
2020-21
Diff
from
average
Lowest for
summer
2020-21
Total for
summer
2020-21
Average
for
summer
Rank of
summer
2020-21
Fraction of
summer
average
Northern (district 91)
Cape Grim 18.2 -0.7 24.5 19 Feb 2021 12.5 -0.7 8.0 11 Dec 2020 147.6 118.2 high 125%
Cape Grim BAPS (Comparison) 18.1 -0.7 24.5 19 Feb 2021 12.5 -0.5 8.1 11 Dec 2020 187.8 118.7 v high 158%
Cressy Research Station 23.6 -0.9 32.3 11 Jan 2021 9.0 -0.9 -0.7 3 Dec 2020 197.0 109.8 high 179%
Devonport Airport 21.1 0.0 27.5 30 Jan 2021 11.8 -0.2 3.6 28 Dec 2020 179.8 131.6 high 137%
Launceston (Ti Tree Bend) 23.5 -0.5 31.8 15 Dec 2020 11.5 -0.4 2.9 8 Dec 2020 196.4 126.8 v high 155%
Launceston Airport 22.6 -1.5 31.6 25 Jan 2021 9.7 -0.7 1.7 8 Dec 2020 170.2 118.3 high 144%
Luncheon Hill (Forestry) 19.3 -1.0 30.1 11 Jan 2021 9.6 -0.5 4.1 28 Dec 2020
Marrawah 19.0 -0.8 26.3 11 Jan 2021 11.4 -0.3 7.0 11 Dec 2020 226.2 156.5 high 145%
Scottsdale (West Minstone Road) 21.0 -1.3 30.9 25 Jan 2021 10.6 +0.1 2.5 8 Dec 2020 285.0 164.6 v high 173%
Sheffield School Farm 20.2 -1.1 30.8 25 Jan 2021 9.5 -0.7 3.4 8 Dec 2020 329.4 161.8 highest 204%
Smithton Aerodrome 20.6 -0.6 28.7 25 Jan 2021 10.4 -0.4 1.7 23 Feb 2021 203.6 135.6 v high 150%
Wynyard Airport 20.8 -0.4 32.2 25 Jan 2021 11.1 +0.2 3.7 28 Dec 2020 252.4 155.6 v high 162%
East Coast (district 92)
Bicheno (Council Depot) 20.3 -0.8 36.0 25 Jan 2021 14.2 +1.5 8.5 23 Feb 2021 257.2 180.8 high 142%
Fingal (Legge Street) 21.7 -1.1 35.0 25 Jan 2021 10.0 +0.2 1.9 20 Jan 2021
Friendly Beaches 22.3 -0.4 37.5 25 Jan 2021 12.3 -0.5 6.7 25 Dec 2020 280.6 175.2 v high 160%
Lake Leake (Elizabeth River) 18.4 -0.6 31.1 25 Jan 2021 7.5 -0.5 0.0 20 Jan 2021 227.2 170.1 high 134%
larapuna (Eddystone Point) 21.1 +0.7 31.8 25 Jan 2021 13.4 +0.3 6.1 8 Dec 2020 290.0 152.1 v high 191%
Maria Island (Point Lesueur) 20.1 -0.8 30.4 25 Jan 2021 13.0 -0.3 7.2 8 Dec 2020 133.6 134.6 average 99%
Orford (Aubin Court) 21.2 -0.3 35.9 25 Jan 2021 11.2 -0.4 5.4 8 Dec 2020 160.2 156.9 average 102%
St Helens Aerodrome 21.4 -0.7 36.0 25 Jan 2021 12.5 -0.4 4.9 8 Dec 2020 332.6 180.5 v high 184%
Swan Island 20.4 -0.2 28.1 25 Jan 2021 14.2 -0.4 7.3 8 Dec 2020 170.2 134.6 average 126%
Swansea (Francis Street) 21.3   37.6 25 Jan 2021 11.5   5.1 8 Dec 2020 184.2 141.2 high 130%
Midlands (district 93)
Ross (The Boulevards) 22.8 -1.1 32.6 25 Jan 2021 8.5 -1.5 0.1 3 Dec 2020 150.8 119.6 high 126%
Southeast (district 94)
Campania (Kincora) 23.0 -0.8 35.7 25 Jan 2021 10.3 -0.8 2.5 20 Jan 2021 99.8 110.7 average 90%
Cape Bruny (Cape Bruny) 20.0 +0.5 36.8 11 Jan 2021 11.5 -0.3 6.6 10 Dec 2020 182.2 155.9 high 117%
Cape Bruny Lighthouse 19.0 +1.0 34.4 11 Jan 2021 11.8 +0.6 6.8 3 Dec 2020 196.4 192.0 average 102%
Dennes Point 20.8   34.1 25 Jan 2021 12.3   6.7 28 Dec 2020 98.6
Dover 20.9 +0.5 38.0 11 Jan 2021 9.7 -0.2 3.4 20 Jan 2021 168.4 173.0 average 97%
Dunalley (Stroud Point) 21.0   36.1 11 Jan 2021 12.6   7.6 2 Dec 2020 155.2
Grove (Research Station) 22.0 -0.5 36.4 11 Jan 2021 8.9 -0.3 0.9 20 Jan 2021 161.8 152.7 average 106%
Hobart (Ellerslie Road) 21.9 +0.6 37.5 25 Jan 2021 12.2 +0.5 6.3 20 Jan 2021 153.0 142.8 average 107%
Hobart Airport 21.7 -0.3 35.9 25 Jan 2021 11.6 -0.1 6.0 8 Dec 2020 173.4 127.6 high 136%
kunanyi (Mount Wellington Pinnacle) 12.3 -0.6 26.1 11 Jan 2021 3.8 -0.6 -2.2 8 Dec 2020 262.6 254.8 average 103%
Maatsuyker Island Lighthouse 16.9 +0.2 30.2 11 Jan 2021 11.0 +0.4 6.4 2 Dec 2020 173.4 237.3 low 73%
Melton Mowbray (North Stockman) 21.8 -1.4 35.1 11 Jan 2021 8.9 -1.0 1.8 20 Jan 2021 163.2 105.0 v high 155%
Tasman Island 17.1 -0.5 31.3 25 Jan 2021 11.1 -0.1 5.0 10 Dec 2020 298.8 177.7 v high 168%
Tunnack Fire Station 19.8 -1.2 33.4 25 Jan 2021 7.7 -0.8 0.3 20 Jan 2021 112.4 134.4 low 84%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 23.4 0.0 36.2 11 Jan 2021 9.1 -0.7 1.5 20 Jan 2021 99.2 125.5 average 79%
Ouse Fire Station 23.3 -1.3 35.5 11 Jan 2021 8.9 -0.8 1.3 21 Jan 2021 96.2 92.8 average 104%
Central Plateau (district 96)
Butlers Gorge 17.6 -0.6 29.0 11 Jan 2021 5.4 -0.7 -2.3 21 Jan 2021 277.0 300.6 average 92%
Liawenee 16.5 -1.4 28.8 25 Jan 2021 4.5 -0.3 -4.0 20 Jan 2021 242.4 154.6 high 157%
West Coast (district 97)
Cape Sorell 19.2 +1.1 28.7 11 Jan 2021 12.1 +0.4 7.6 20 Jan 2021 201.8 214.9 average 94%
Hartz Mountain (Keoghs Pimple) 15.9 -0.8 31.4 11 Jan 2021 5.9 -0.6 -0.2 27 Feb 2021 248.6 202.9 high 123%
Low Rocky Point 18.9   30.2 11 Jan 2021 11.4   7.1 8 Dec 2020
Mount Read 12.7 -0.8 25.3 11 Jan 2021 5.0 -0.4 -0.6 8 Dec 2020 671.2 681.0 average 99%
Scotts Peak Dam 20.1 -0.3 35.2 11 Jan 2021 8.6 -0.4 3.5 8 Dec 2020 389.6 323.6 high 120%
Strahan Aerodrome 20.5 0.0 35.8 11 Jan 2021 10.4 -0.1 3.4 20 Jan 2021 291.8 248.0 high 118%
Warra 17.9 -0.8 32.4 11 Jan 2021 7.8 -0.1 2.8 8 Dec 2020 289.0 311.0 average 93%
King Island (district 98)
King Island Airport 19.7 -0.8 34.9 11 Jan 2021 11.6 -0.7 4.3 20 Jan 2021 177.6 119.3 v high 149%
Flinders Island (district 99)
Flinders Island Airport 21.3 -0.5 36.4 25 Jan 2021 13.2 +0.1 3.5 11 Dec 2020 190.4 144.6 high 132%
Hogan Island 20.6 -0.4 32.5 11 Jan 2021 13.8 -0.7 8.8 8 Dec 2020 115.8 124.2 average 93%
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 Monday 1 March 2021. 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

Climate