Tasmania in autumn 2023

Rainfall

  • Autumn rainfall totals were below average for parts of the South East, Upper Derwent Valley, Central Plateau, Western and North West Coast districts.
  • Rainfall totals were close to average for autumn in most other parts.
  • For Tasmania as a whole, autumn rainfall was 7% below average.
  • The wettest day was 7 April when a rain band swept across the state with thunderstorms for parts of the north.
  • A couple of sites with relatively short historical data had their highest autumn daily rainfall on record.

Temperature

  • Both mean maximum and mean minimum temperatures were close to average for autumn across the state.
  • For Tasmania as a whole, the mean maximum temperature was 0.15 °C below average and the mean minimum was just 0.02 °C higher than average.
  • The warmest day was March 5 when maximum temperatures were up to 10 °C above average as a large high pressure system tracked over the Tasman Sea.
  • The coolest night was 18 May when a large area of the north-east had minimum temperatures more than 6 °C below average.
  • Some sites had their lowest autumn temperature on record.

Hobart (Ellerslie Road)

  • Total rainfall for Hobart (Ellerslie Road) was 81.6 mm, which is 58% of the long-term average of 141.7 mm.
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 18.4 °C, which is 1.0 °C above the long-term average of 17.4 °C.
  • The warmest day was 29.1 °C on 5 March, and the coolest day was on 16 May when the temperature reached 11.6 °C.
  • The mean daily minimum temperature for Hobart (Ellerslie Road) was 9.6 °C, which is 0.6 °C above the long-term average of 9.0 °C.
  • The coldest morning was 2.0 °C on 7 May, and the warmest morning was on 2 March when the minimum temperature was 16.4 °C.

Extremes in autumn 2023
Hottest day 30.9 °C at Bushy Park (Bushy Park Estates) on 5 Mar
30.9 °C at Hobart Airport on 5 Mar
Warmest days on average 19.0 °C at Campania (Kincora)
19.0 °C at Launceston (Ti Tree Bend)
Coolest days on average 8.1 °C at kunanyi (Mount Wellington Pinnacle)
Coldest day -0.7 °C at kunanyi (Mount Wellington Pinnacle) on 16 May
Coldest night -6.6 °C at Ross (The Boulevards) on 17 May
-6.6 °C at Ross (The Boulevards) on 18 May
Coolest nights on average 1.9 °C at kunanyi (Mount Wellington Pinnacle)
1.9 °C at Liawenee
Warmest nights on average 12.5 °C at Hogan Island
12.5 °C at Swan Island
Warmest night 17.8 °C at Flinders Island Airport on 5 Mar
Warmest on average overall 15.1 °C at Hogan Island
15.1 °C at Swan Island
Coolest on average overall 5.0 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall 1268.0 mm at Mount Read
Wettest day 167.8 mm at Erriba (Jubb Road) on 7 Apr
Strongest wind gust 143 km/h at Mount Read on 7 Mar

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
Erriba (Jubb Road) 167.8 on 7 Apr 90.2 on 17 Mar 2001 23
National Park Parks & Wildlife Depot 48.2 on 8 Mar 48.0 on 11 May 2018 20



Record lowest autumn temperature
New record
(°C)
Old
record
Years of
record
Average for
autumn
Strahan Aerodrome -0.6 on 7 May -0.4 on 21 May 2010 32 8.7



Summary statistics for autumn 2023
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
autumn
2023
Diff
from
average
Highest for
autumn
2023
Mean for
autumn
2023
Diff
from
average
Lowest for
autumn
2023
Total for
autumn
2023
Average
for
autumn
Rank of
autumn
2023
Fraction of
autumn
average
Northern (district 91)
Cape Grim 16.1 -0.5 24.1 18 Mar 11.3 -0.4 5.8 7 May 220.0 223.5 average 98%
Cressy (Brumbys Creek) 18.1   27.5 5 Mar 5.8   -4.2 18 May 118.2
Devonport Airport 18.1 +0.2 26.0 2 Mar 8.6 -0.3 -0.7 8 May 117.0 182.7 low 64%
Launceston (Ti Tree Bend) 19.0 -0.1 27.8 5 Mar 7.2 -0.4 -2.4 8 May 119.6 156.8 low 76%
Launceston Airport 18.1 -0.3 28.0 5 Mar 6.5 -0.3 -3.8 18 May 129.4 154.0 low 84%
Low Head 17.5 -0.2 22.1 2 Mar 11.2 -0.1 3.0 8 May 147.0 170.9 average 86%
Luncheon Hill (Forestry) 15.5 -0.3 25.3 5 Mar 8.1 -0.3 1.1 7 May 374.2 353.4 average 106%
Marrawah 16.8 -0.2 24.3 18 Mar 10.1 -0.3 4.0 7 May 267.0 260.6 average 102%
Scottsdale (West Minstone Road) 17.2 -0.8 25.7 5 Mar 7.4 -0.6 -1.2 8 May 218.2 230.0 average 95%
Sheffield School Farm 16.5 -0.1 24.1 5 Mar 6.9 -0.4 -1.4 7 May 192.0 238.6 low 80%
Smithton Aerodrome 17.7 -0.2 25.5 5 Mar 7.7 -0.3 -0.1 11 May 247.2 206.2 high 120%
Wynyard Airport 17.9 +0.2 24.3 2 Mar 6.9 -0.6 -1.7 7 May 164.2 216.3 low 76%
East Coast (district 92)
Bicheno (Council Depot) 18.5 -0.2 23.8 6 Mar 10.4 +0.1 2.5 8 May 195.4 171.9 high 114%
Fingal (Fleming St) 17.9   27.7 5 Mar 4.4   -4.0 17 May
Friendly Beaches 18.5 -0.4 26.3 5 Mar 9.4 -0.6 2.4 18 May 259.0 172.8 high 150%
Maria Island (Point Lesueur) 17.3 -0.3 25.0 2 Mar 11.0 -0.4 5.5 20 May 145.2 120.5 average 120%
St Helens Aerodrome 18.3 -0.3 26.7 5 Mar 9.3 -0.3 1.6 18 May 216.2 170.8 high 127%
Swan Island 17.7 -0.5 25.5 18 Mar 12.5 -0.2 5.5 8 May 149.8 158.0 average 95%
Swansea (Francis Street) 18.4 -0.3 29.7 5 Mar 8.0 -0.7 -0.8 18 May 120.8 127.7 average 95%
Midlands (district 93)
Ross (The Boulevards) 17.7 -0.2 27.9 5 Mar 4.6 -1.1 -6.6 17 May 108.2 106.4 average 102%
Southeast (district 94)
Campania (Kincora) 19.0 -0.1 30.8 5 Mar 7.2 -0.6 -2.2 18 May 60.2 103.3 low 58%
Cape Bruny (Cape Bruny) 16.7 +0.1 27.3 5 Mar 10.0 -0.2 5.2 7 May 166.8 181.1 average 92%
Dennes Point 17.6 -0.1 25.5 5 Mar 10.0 -0.5 3.6 8 May 93.8 128.8 low 73%
Dover 16.8 -0.2 25.9 5 Mar 7.1 -0.2 -0.2 8 May 161.4 202.6 average 80%
Dunalley (Stroud Point) 17.8 -0.3 26.4 5 Mar 10.3 -0.5 4.5 7 May 144.2 131.9 average 109%
Grove (Research Station) 17.9 -0.2 30.2 5 Mar 5.6 -0.5 -3.9 8 May 124.2 159.1 average 78%
Hobart (Ellerslie Road) 18.4 +1.0 29.1 5 Mar 9.6 +0.6 2.0 7 May 81.6 141.7 low 58%
Hobart Airport 18.5   30.9 5 Mar 8.3   1.0 7 May 78.6
kunanyi (Mount Wellington Pinnacle) 8.1 -0.4 19.8 5 Mar 1.9 -0.4 -4.1 7 May 182.2 239.2 low 76%
Maatsuyker Island Lighthouse 14.3 -0.2 21.6 26 Apr 10.0 +0.4 4.7 7 May 305.8 307.4 average 99%
Tasman Island 15.0 -0.2 22.7 26 Apr 9.8 -0.2 4.4 7 May 235.2 213.1 average 110%
Tunnack Fire Station 15.4 -0.3 25.3 5 Mar 4.8 -0.7 -5.1 7 May 135.8 136.4 average 100%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 18.8 +0.7 30.9 5 Mar 5.7 -0.5 -4.8 7 May 69.0 130.0 v low 53%
Ouse Fire Station 18.3 -0.2 29.7 5 Mar 5.8 +0.2 -6.1 7 May 83.4 101.3 average 82%
Central Plateau (district 96)
Butlers Gorge 12.8 -0.5 24.2 5 Mar 3.9 +0.4 -3.5 24 Apr 370.0 403.7 average 92%
Liawenee 11.9 -0.5 20.6 15 Mar 1.9 -0.1 -5.9 7 May 159.2 214.2 low 74%
West Coast (district 97)
Cape Sorell 16.7 +1.0 23.2 14 Mar 10.9 +0.5 3.5 7 May 251.6 319.3 low 79%
Hartz Mountain (Keoghs Pimple) 10.2 -1.3 24.8 5 Mar 4.3 -0.5 -1.3 7 May 289.8 244.3 high 119%
Low Rocky Point 15.8 -0.7 21.0 12 Apr 10.3 -0.2 2.3 7 May 313.0 330.6 average 95%
Mount Read 8.3 -0.8 18.1 5 Mar 3.1 -0.5 -3.1 7 May 1268.0 1008.9 high 126%
Scotts Peak Dam 14.3 -0.7 27.1 5 Mar 6.8 -0.2 -0.8 7 May 490.0 441.0 average 111%
Strahan Aerodrome 16.6 -0.3 23.8 26 Apr 9.0 +0.3 -0.6 7 May 425.0 381.4 average 111%
Warra 13.3 -0.6 25.7 5 Mar 6.1 0.0 -2.0 7 May 415.4 402.5 average 103%
King Island (district 98)
King Island Airport 17.5 -0.4 25.2 18 Mar 10.4 -0.4 3.1 13 May 159.2 195.0 low 82%
Flinders Island (district 99)
Flinders Island Airport 18.3 -0.5 28.0 5 Mar 11.2 +0.4 -1.3 17 May 136.0 185.5 low 73%
Hogan Island 17.7 -0.4 27.5 18 Mar 12.5 -0.5 6.8 4 May 167.8 160.6 average 104%
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, usually published in the first week of the following 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.

This statement has been prepared based on information available at 9 am on Friday 2 June 2023. 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.

Information about Australian Indigenous seasonal calendars is available at the Indigenous Weather Knowledge website.


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