Tasmania in March 2021: wet along the east coast

March 2021 was wetter than average along the east coast while elsewhere rainfall totals were mostly close to average. Heavy rainfall triggered flash flooding in the east and major riverine flooding in parts of the upper South Esk River catchment in the north-east later in the month. Daytime temperatures were close to average for March overall, while nights were warmer than average across most of the state.

Flash flooding in the east

Warmer than average nights for most

  • Averaged across the state, the mean maximum temperature was 0.19 °C higher than average.
  • Averaged across the state, the mean minimum temperature was 0.25 °C higher than average.
  • Daytime temperatures were warmer than average for March overall for a small area of the south but elsewhere they were close to average.
  • Nights were warmer than average across most of the state, and close to average for an area of central and western Tasmania.
  • Northern parts of the east coast had mean minimum temperatures in the warmest 10% of years and a couple of sites in the East Coast district had their highest March mean daily minimum temperature on record.

Hobart (Ellerslie Road)

  • Total rainfall for Hobart (Ellerslie Road) was 59.6 mm, which is 133% of the long-term average of 44.7 mm.
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 21.2 °C, which is 1.0 °C above the long-term average of 20.2 °C.
  • The warmest day was 29.1 °C on the 12th, and the coolest day was on the 2nd when the temperature reached 16.3 °C.
  • The mean daily minimum temperature for Hobart (Ellerslie Road) was 11.8 °C, which is 0.9 °C above the long-term average of 10.9 °C.
  • The coldest morning was 7.7 °C on the 14th, and the warmest morning was on the 13th when the minimum temperature was 16.4 °C.

Further information

Media
(03) 9669 4057

Extremes in March 2021
Hottest day 30.6 °C at Campania (Kincora) on the 12th
Warmest days on average 22.8 °C at Cressy Research Station
Coolest days on average 11.0 °C at kunanyi (Mount Wellington Pinnacle)
Coldest day 3.0 °C at kunanyi (Mount Wellington Pinnacle) on the 2nd
Coldest night -1.6 °C at kunanyi (Mount Wellington Pinnacle) on the 14th
Coolest nights on average 3.6 °C at kunanyi (Mount Wellington Pinnacle)
Warmest nights on average 14.5 °C at Bicheno (Council Depot)
Warmest night 18.9 °C at Flinders Island Airport on the 13th
Warmest on average overall 17.4 °C at Bicheno (Council Depot)
17.4 °C at larapuna (Eddystone Point)
17.4 °C at Swan Island
Coolest on average overall 7.3 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall 365.1 mm at Lake Margaret Dam
Wettest day 275.4 mm at Gray (Dalmayne Rd) on the 25th
Strongest wind gust 124 km/h at kunanyi (Mount Wellington Pinnacle) on the 4th

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 March daily rainfall
New record
(mm)
Old
record
Years of
record
Orford (Aubin Court) 120.2 on the 25th 91.1 on the 23rd in 1983 69
kunanyi (Mount Wellington Pinnacle) 91.0 on the 25th 78.0 on the 28th in 1997 41
Hartz Mountain (Keoghs Pimple) 57.2 on the 25th 36.0 on the 17th in 1996 26
Friendly Beaches 105.2 on the 25th 85.4 on the 24th in 2011 25
Scotts Peak Dam 50.2 on the 2nd 43.2 on the 19th in 2018 23
Mount Dromedary 39.4 on the 25th 31.6 on the 18th in 2001 22



Record highest March total rainfall
New record
(mm)
Old
record
Years of
record
Average for
March
Orford (Aubin Court) 152.4 144.0 in 2011 68 46.9
Whitemark Post Office 145.4 143.9 in 1970 57 51.2

Highest March total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
March
Lake Leake (Elizabeth River) 152.4 272.6 in 1979 62.5



Record highest March mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
March
Bicheno (Council Depot) 14.5 13.9 in 2017 46 12.2
Fingal (Legge Street) 10.0 9.9 in 2016 34 8.1



Summary statistics for March 2021
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
March
2021
Diff
from
average
Highest for
March
2021
Mean for
March
2021
Diff
from
average
Lowest for
March
2021
Total for
March
2021
Average
for
March
Rank of
March
2021
Fraction of
March
average
Northern (district 91)
Cape Grim 18.3 -0.6 21.8 12th 13.3 +0.1 9.4 7th 71.4 66.5 high 107%
Cape Grim BAPS (Comparison) 18.4 -0.3 21.4 12th 13.2 +0.2 9.8 6th 70.2 49.6 high 142%
Cressy Research Station 22.8 +0.3 29.9 11th 8.6 +0.2 2.3 10th 29.8 46.0 average 65%
Devonport Airport 20.9 +0.4 24.9 15th 11.3 +0.3 3.7 14th 47.0 48.7 average 97%
Launceston (Ti Tree Bend) 22.6 0.0 26.7 12th 10.1 -0.2 4.0 14th 30.2 41.0 average 74%
Launceston Airport 22.0 -0.5 27.5 12th 9.1 -0.3 3.2 3rd 20.2 53.6 v low 38%
Low Head 19.9 -0.1 22.2 21st 13.2 -0.1 8.2 3rd 40.8 50.7 average 80%
Luncheon Hill (Forestry) 18.1 -0.8 24.1 11th 9.9 0.0 4.6 6th 94.2 88.5 average 106%
Marrawah 19.3 -0.1 23.3 19th 11.6 -0.1 8.5 14th 58.4 67.7 average 86%
Scottsdale (West Minstone Road) 20.3 -1.0 24.8 12th 10.5 +0.5 4.1 14th 44.8 56.9 average 79%
Sheffield School Farm 19.2 -0.7 22.5 15th 9.4 0.0 3.1 3rd 75.2 69.2 average 109%
Smithton Aerodrome 20.2 -0.2 22.5 12th 10.1 +0.3 1.2 3rd 66.4 55.1 average 121%
Wynyard Airport 19.9 -0.3 22.6 15th 10.8 +1.1 2.9 3rd 71.2 50.2 high 142%
East Coast (district 92)
Bicheno (Council Depot) 20.3 -0.3 26.0 13th 14.5 +2.3 10.5 14th 110.5 57.2 high 193%
Fingal (Legge Street) 20.8 -0.8 26.5 12th 10.0 +1.9 3.7 3rd 77.6 45.0 high 172%
Friendly Beaches 21.7 +0.1 28.7 13th 12.6 +0.5 8.3 3rd 125.4 60.0 v high 209%
Lake Leake (Elizabeth River) 17.0 -0.5 23.9 12th 7.0 +0.8 1.0 14th 152.4 62.5 v high 244%
larapuna (Eddystone Point) 21.3 +1.1 25.1 15th 13.6 +0.5 8.3 2nd 87.8 58.1 high 151%
Maria Island (Point Lesueur) 19.6 -0.5 24.3 12th 13.1 0.0 8.9 14th 127.2 41.3 v high 308%
Orford (Aubin Court) 20.8 +0.2 26.0 13th 11.3 +0.6 6.4 17th 152.4 46.9 highest 325%
St Helens Aerodrome 21.1 0.0 25.8 13th 12.6 +0.8 6.5 3rd 86.2 65.8 average 131%
Swan Island 20.4 -0.1 25.3 12th 14.4 -0.1 8.6 14th 63.6 56.9 average 112%
Swansea (Francis Street) 20.9   28.0 13th 11.3   6.0 14th 107.0 46.3 v high 231%
Midlands (district 93)
Ross (The Boulevards) 21.6 -0.2 27.4 12th 7.7 -0.5 2.4 3rd 53.4 38.0 average 141%
Southeast (district 94)
Campania (Kincora) 22.2 -0.1 30.6 12th 9.7 -0.4 3.7 14th 44.2 35.3 average 125%
Cape Bruny (Cape Bruny) 19.2 +0.4 24.8 22nd 12.0 +0.3 8.1 14th 81.4 56.5 high 144%
Cape Bruny Lighthouse 18.5 +0.8 23.6 22nd 12.2 +1.0 8.2 14th 84.8 67.9 high 125%
Dennes Point 20.3   25.3 12th 12.2   8.4 14th 56.4
Dover 20.1 +0.7 25.3 12th 8.6 -0.4 4.1 14th 74.2 63.2 average 117%
Dunalley (Stroud Point) 20.1   24.6 12th 12.7   8.1 14th 91.4
Hobart (Ellerslie Road) 21.2 +1.0 29.1 12th 11.8 +0.9 7.7 14th 59.6 44.7 high 133%
Hobart Airport 21.1 +0.3 28.6 12th 11.0 +0.2 6.4 3rd 54.0 36.5 high 148%
kunanyi (Mount Wellington Pinnacle) 11.0 -0.4 18.4 12th 3.6 -0.5 -1.6 14th 140.0 79.6 high 176%
Maatsuyker Island Lighthouse 16.0 -0.3 22.1 23rd 11.5 +0.8 6.7 14th 82.6 84.6 average 98%
Melton Mowbray (North Stockman) 20.6 -0.5 28.2 12th 8.0 -0.4 2.6 14th 44.2 33.5 high 132%
Tasman Island 16.6 -0.5 21.9 31st 11.8 +0.4 8.1 3rd 123.4 71.7 high 172%
Tunnack Fire Station 19.1 -0.1 26.1 12th 7.6 +0.1 1.6 16th 56.0 49.1 high 114%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 22.1 +0.2 28.2 12th 8.3 -0.2 1.6 16th 27.8 38.9 average 71%
Ouse Fire Station 21.7 -0.7 27.8 12th 8.3 +0.2 0.7 16th 31.4 32.7 average 96%
Central Plateau (district 96)
Butlers Gorge 16.4 -0.2 24.2 12th 5.6 +0.4 -0.4 18th 114.2 101.6 average 112%
Liawenee 15.1 -0.9 21.4 11th 4.3 +0.5 -1.1 14th 54.2 65.4 average 83%
West Coast (district 97)
Cape Sorell 18.6 +0.9 25.8 22nd 12.3 +0.7 8.9 3rd 72.2 83.2 average 87%
Hartz Mountain (Keoghs Pimple) 14.3 -0.3 23.0 12th 6.0 -0.3 1.3 14th 129.4 74.9 v high 173%
Low Rocky Point 17.9   25.2 23rd 11.6   8.9 14th
Mount Read 11.7 -0.2 18.5 12th 4.7 -0.4 -0.4 14th 353.4 279.1 high 127%
Scotts Peak Dam 17.8 -0.8 27.4 22nd 8.3 -0.2 3.6 14th 123.8 124.2 average 100%
Strahan Aerodrome 19.2 -0.4 27.4 22nd 10.2 +0.3 5.7 16th 105.0 107.1 average 98%
Warra 16.5 -0.5 24.9 12th 7.7 +0.1 2.7 16th 109.2 103.3 average 106%
King Island (district 98)
King Island Airport 19.3 -1.0 25.2 12th 12.3 0.0 3.9 6th 58.0 51.5 average 113%
Flinders Island (district 99)
Flinders Island Airport 20.8 -0.6 29.2 13th 13.2 +0.6 5.3 3rd 115.4 50.6 v high 228%
Hogan Island 19.6 -1.0 24.1 13th 14.3 -0.3 10.5 14th 110.0 47.7 high 231%
Note: From 2017, information about Macquarie Island can be found in the climate summary for the Remote Islands and Antarctica

Notes

The Monthly 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 11 am on Thursday 1 April 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

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