Tasmania in May 2021: drier than average in parts of the north and south-east

Rainfall totals in May were less than average across most of Tasmania, with parts of the north and south-east quarter of the state recording less than 40% of their May average rainfall. Days were warmer than average in the south, tending to close to average across the north. Night-time temperatures were close to average in the south and cooler than average across the north.

Driest May in the past 10 years

  • May rainfall was 30% below average for the state overall and the lowest since May 2011.
  • A cold front brought widespread rainfall across the west on the 10th, followed by more rainfall for the west from a series of cold fronts around the middle of the month. Most of the state was dry from the 21st to the 25th.
  • A couple of sites had their highest May daily rainfall on record on the 26th when a strong cold front brought heavy rainfall to parts of the Northern and Central Plateau districts.
  • Year to date rainfall is running close to average across mainland Tasmania, with a wetter than average year-to-date for King Island and Flinders Island.

Cooler than average overall

  • Averaged across the state, the mean maximum temperature was 0.25 °C warmer than average.
  • Mean maximum temperatures were warmer than average across the south but close to average elsewhere, while mean minimum temperatures were cooler than average across most of the state but close to average in the south.
  • Several sites had their highest May temperature on record at the beginning of the month when a high-pressure system in the Tasman Sea brought dry and warm weather to central and eastern Australia.
  • Averaged across the state, the mean minimum temperature was 0.51 °C lower than average, the coolest since 2013.
  • A high pressure system centred over south-east Australia at the end of the month gave some sites their lowest May temperature on record.
  • A couple of sites had their lowest May mean daily minimum temperature for at least 20 years.

Hobart (Ellerslie Road)

  • Total rainfall for Hobart (Ellerslie Road) was 12.6 mm, which is 27% of the long-term average of 46.8 mm.
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 15.7 °C, which is 1.2 °C above the long-term average of 14.5 °C.
  • The warmest day was 23.2 °C on the 1st, and the coolest day was on the 28th when the temperature reached 10.6 °C.
  • The mean daily minimum temperature for Hobart (Ellerslie Road) was 7.6 °C, which is 0.6 °C above the long-term average of 7.0 °C.
  • The coldest morning was 2.4 °C on the 31st, and the warmest morning was on the 20th when the minimum temperature was 13.4 °C.

Further information

Media
(03) 9669 4057

Extremes in May 2021
Hottest day 24.6 °C at Campania (Kincora) on the 1st
Warmest days on average 16.4 °C at Campania (Kincora)
Coolest days on average 5.8 °C at kunanyi (Mount Wellington Pinnacle)
Coldest day -1.4 °C at kunanyi (Mount Wellington Pinnacle) on the 28th
Coldest night -7.0 °C at Liawenee on the 31st
Coolest nights on average 0.7 °C at kunanyi (Mount Wellington Pinnacle)
Warmest nights on average 10.6 °C at Hogan Island
Warmest night 15.9 °C at Flinders Island Airport on the 7th
Warmest on average overall 13.0 °C at Swan Island
Coolest on average overall 3.2 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall 297.2 mm at Mount Read
Wettest day 51.6 mm at Jackeys Marsh on the 26th
Strongest wind gust 126 km/h at Scotts Peak Dam on the 20th

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 May daily rainfall
New record
(mm)
Old
record
Years of
record
Nunamara Offtake (St Patricks River) 44.0 on the 26th 40.0 on the 10th in 2016 25
Liawenee 42.0 on the 26th 41.6 on the 7th in 2006 21



Record highest May temperature
New record
(°C)
Old
record
Years of
record
Average for
May
kunanyi (Mount Wellington Pinnacle) 15.0 on the 1st 14.9 on the 1st in 2018 42 5.7
Strahan Aerodrome 23.3 on the 1st 22.5 on the 8th in 2002 29 14.3
Tasman Island 21.6 on the 2nd 21.0 on the 8th in 2002 20 13.2



Record lowest May temperature
New record
(°C)
Old
record
Years of
record
Average for
May
Flinders Island Airport -1.7 on the 29th -1.5 on the 19th in 1981 59 9.0
Marrawah 1.5 on the 30th 1.7 on the 31st in 1989 51 9.1
Wynyard Airport -2.7 on the 29th = -2.7 on the 30th in 2006 36 5.4
Cape Grim BAPS (Comparison) 2.6 on the 30th 4.0 on the 30th in 2000 29 10.2
Sheffield School Farm -2.0 on the 30th -1.6 on the 17th in 2015 25 5.4
Low Head 2.6 on the 30th 3.1 on the 31st in 2017 24 9.5



Lowest May mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
May
Fingal (Legge Street) 1.5 1.0 in 1994 2.9
Ross (The Boulevards) 1.4 1.2 in 2001 3.4



Summary statistics for May 2021
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
May
2021
Diff
from
average
Highest for
May
2021
Mean for
May
2021
Diff
from
average
Lowest for
May
2021
Total for
May
2021
Average
for
May
Rank of
May
2021
Fraction of
May
average
Northern (district 91)
Cape Grim 14.1 -0.3 16.8 1st 9.7 -0.6 2.4 30th 82.4 101.5 low 81%
Cape Grim BAPS (Comparison) 14.2 -0.5 16.7 7th 9.7 -0.5 2.6 30th 86.6 83.2 average 104%
Cressy Research Station 15.1 +0.3 21.7 1st 2.9 -0.7 -3.2 31st 37.4 49.2 average 76%
Devonport Airport 15.2 -0.2 18.3 1st 6.5 -0.3 0.4 30th 29.6 74.1 low 40%
Launceston (Ti Tree Bend) 16.1 +0.3 22.3 1st 3.9 -1.2 -2.6 30th 52.0 64.7 average 80%
Launceston Airport 14.9 +0.2 22.3 2nd 3.4 -1.0 -3.3 30th 47.6 56.9 average 84%
Low Head 14.8 -0.6 17.8 3rd 8.8 -0.7 2.6 30th 32.6 63.0 low 52%
Luncheon Hill (Forestry) 12.7 -0.2 18.5 1st 6.7 -0.3 1.3 30th 127.0 167.5 average 76%
Marrawah     18.3 7th 8.4 -0.7 1.5 30th 87.2 109.6 average 80%
Scottsdale (West Minstone Road) 14.7 -0.1 21.2 1st 4.9 -1.0 -0.4 17th 54.4 95.8 low 57%
Sheffield School Farm 13.3 -0.2 19.9 2nd 4.5 -0.9 -2.0 30th 89.2 96.5 average 92%
Smithton Aerodrome 15.1 -0.3 18.5 7th 6.1 -0.2 -1.7 31st 73.8 90.8 average 81%
Wynyard Airport 14.7 -0.5 19.2 3rd 5.4 0.0 -2.7 29th 44.2 96.5 low 46%
East Coast (district 92)
Bicheno (Council Depot) 16.3 -0.3 20.5 8th 8.2 -0.3 4.0 31st 19.0 55.4 low 34%
Fingal (Legge Street) 15.4 +0.1 21.8 2nd 1.5 -1.4 -4.3 22nd 25.4 50.5 low 50%
Friendly Beaches 16.1 -0.1 21.7 1st 7.2 -1.0 2.8 21st 24.8 52.3 low 47%
Lake Leake (Elizabeth River) 11.4 0.0 20.1 1st 1.1 -1.1 -3.5 31st 21.8 72.4 low 30%
larapuna (Eddystone Point) 16.1 +0.5 19.4 3rd 9.2 -0.2 4.6 30th 26.0 64.7 low 40%
Maria Island (Point Lesueur) 15.0 -0.2 19.5 2nd 9.7 +0.1 5.6 28th 16.4 38.5 average 43%
Orford (Aubin Court) 15.3 -0.4 20.3 7th 6.1 -0.2 0.8 15th 30.8 57.4 average 54%
St Helens Aerodrome 16.2 +0.1 19.9 3rd 6.6 -0.7 1.9 21st 48.6 48.7 average 100%
Swan Island 15.7 -0.2 19.2 1st 10.2 -0.6 6.1 30th 22.6 53.3 low 42%
Swansea (Francis Street) 15.9   22.5 2nd 5.6   0.3 31st 21.4 45.3 average 47%
Midlands (district 93)
Ross (The Boulevards) 14.6 +0.4 21.6 1st 1.4 -2.0 -4.7 18th 20.6 32.6 average 63%
Southeast (district 94)
Campania (Kincora) 16.4 +0.5 24.6 1st 5.0 -0.8 -1.1 31st 9.2 33.5 lowest 27%
Cape Bruny (Cape Bruny) 14.3 0.0 19.8 22nd 8.8 +0.1 4.9 12th 60.8 68.3 average 89%
Dennes Point 15.2   19.8 1st 8.5   4.1 31st 25.4
Dover 14.6 -0.1 22.0 1st 5.4 -0.4 0.0 12th 64.2 72.4 average 89%
Dunalley (Stroud Point) 15.2   19.7 2nd 8.3   3.7 31st 35.6 53.0 average 67%
Grove (Research Station) 15.1 +0.1 21.7 1st 4.0 -0.4 -2.5 12th 35.0 64.2 low 55%
Hobart (Ellerslie Road) 15.7 +1.2 23.2 1st 7.6 +0.6 2.4 31st 12.6 46.8 v low 27%
Hobart Airport 15.9 +0.6 23.2 2nd 6.6 -0.1 1.9 15th 17.8 35.7 low 50%
kunanyi (Mount Wellington Pinnacle) 5.8 +0.1 15.0 1st 0.7 +0.1 -3.6 29th 23.8 69.2 low 34%
Maatsuyker Island Lighthouse 13.1 +0.3 21.1 1st 8.7 +0.2 3.9 15th 114.0 115.7 average 99%
Melton Mowbray (North Stockman) 14.8 +0.6 24.0 1st 3.4 -1.0 -5.1 31st 18.4 34.2 low 54%
Tasman Island 13.5 +0.3 21.6 2nd 8.7 +0.1 3.4 28th 35.6 69.9 v low 51%
Tunnack Fire Station 12.6 +0.3 19.5 2nd 3.3 -0.4 -2.7 15th 19.0 45.5 lowest 42%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 15.1 +0.7 20.9 22nd 2.7 -1.4 -3.2 29th 24.2 45.6 low 53%
Central Plateau (district 96)
Butlers Gorge 10.7 +0.7 19.0 1st 1.3 -0.5 -5.4 12th 124.8 162.2 average 77%
Liawenee 8.9 -0.1 16.8 1st 0.7 +0.4 -7.0 31st 69.6 87.4 average 80%
West Coast (district 97)
Hartz Mountain (Keoghs Pimple) 8.3 -0.2 18.5 1st 3.2 -0.2 -1.2 15th 76.6 86.8 average 88%
Low Rocky Point 14.1   22.6 1st 8.8   4.4 12th 145.2 141.9 average 102%
Mount Read 6.4 0.0 14.1 2nd 1.8 -0.4 -3.0 29th 297.2 430.9 low 69%
Scotts Peak Dam 12.1 +0.5 21.2 1st 5.3 -0.2 0.3 12th 155.2 190.7 low 81%
Strahan Aerodrome 15.0 +0.7 23.3 1st 7.2 -0.3 0.8 31st 150.4 159.5 average 94%
Warra 11.2 +0.2 20.2 1st 4.9 +0.3 0.3 15th 126.0 165.7 average 76%
King Island (district 98)
King Island Airport 15.5 -0.1 20.9 1st 9.0 -0.5 2.1 31st 78.6 89.0 average 88%
Flinders Island (district 99)
Flinders Island Airport 16.1 -0.2 21.1 2nd 8.0 -1.0 -1.7 29th 32.2 78.2 low 41%
Hogan Island 15.2 -0.5 18.2 2nd 10.6 -0.8 6.7 15th 63.2 58.7 average 108%
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 12 pm on Tuesday 1 June 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

Creative Commons By Attribution logo Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence

Climate