Tasmania in December 2023

Rainfall

  • Rainfall was below average for December across the west and south, but above average for parts of the North East and East Coast districts.
  • The rainfall total for Tasmania as a whole was 25% below the December average (based on 1961-1990).
  • The wettest day was the 14th when a low-pressure trough combined with high humidity and high temperatures brought showers and thunderstorms to much of Tasmania; the highest daily total was 63.2 mm at Sprent.
  • Some sites had their highest December daily rainfall on record on the 14th.

Temperature

  • Mean maximum temperatures were warmer than average for December across the south and east, and very much warmer than average across the north (in the warmest 10% of historical records for December).
  • The mean maximum temperature for Tasmania overall was 1.94 °C warmer than average (based on 1961-1990), and the 5th warmest on record going back to 1910.
  • Mean minimum temperatures were warmer than average for December across the south and centre, and very much warmer than average across the north and Bass Strait Islands (in the warmest 10% of historical records for December).
  • The mean minimum temperature for Tasmania overall was 0.82 °C warmer than average (based on 1961-1990), and the warmest since 2018.
  • Temperatures dropped below 0 °C at kunanyi (Mount Wellington Pinnacle) on the 30th, with light snow falling.
  • Low Head had its highest December mean daily maximum temperature on record.

Hobart (Ellerslie Road)

  • Total rainfall for Hobart (Ellerslie Road) was 29.2 mm, which is 52% of the long-term average of 56.2 mm.
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 21.3 °C, which is 0.9 °C above the long-term average of 20.4 °C.
  • The warmest day was 27.3 °C on the 13th, and the coolest day was on the 20th when the temperature reached 17.3 °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 6.6 °C on the 10th, and the warmest morning was on the 14th when the minimum temperature was 15.9 °C.

Extremes in December 2023
Hottest day 31.5 °C at Bushy Park (Bushy Park Estates) on the 12th
Warmest days on average 24.2 °C at Launceston (Ti Tree Bend)
Coolest days on average 11.8 °C at kunanyi (Mount Wellington Pinnacle)
Coldest day 4.6 °C at Mount Read on the 30th
Coldest night -2.3 °C at Butlers Gorge on the 10th
Coolest nights on average 3.7 °C at kunanyi (Mount Wellington Pinnacle)
Warmest nights on average 14.5 °C at Swan Island
Warmest night 18.3 °C at Flinders Island Airport on the 27th
Warmest on average overall 18.0 °C at Launceston (Ti Tree Bend)
Coolest on average overall 7.8 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall 220.2 mm at Lake Margaret Dam
Wettest day 63.2 mm at Sprent on the 14th
Strongest wind gust 120 km/h at kunanyi (Mount Wellington Pinnacle) on the 14th

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 December daily rainfall
New record
(mm)
Old
record
Years of
record
Golden Valley (Brodies Road) 48.8 on the 14th 48.0 on the 22nd in 2007 29
Deloraine Railway Bridge (Meander River) 42.2 on the 14th 39.8 on the 22nd in 2007 28
Kimberley (Mersey River) 42.2 on the 14th 39.8 on the 22nd in 2003 27
Fortescue Bay 50.0 on the 13th 49.2 on the 26th in 2006 20



Record highest December mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
December
Low Head 20.6 20.2 in 2018 25 19.0



Summary statistics for December 2023
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
December
2023
Diff
from
average
Highest for
December
2023
Mean for
December
2023
Diff
from
average
Lowest for
December
2023
Total for
December
2023
Average
for
December
Rank of
December
2023
Fraction of
December
average
Northern (district 91)
Cape Grim 18.4 +0.9 23.0 12th 12.4 +0.5 9.2 21st 35.4 40.1 average 88%
Cressy (Brumbys Creek) 23.1   29.6 11th 9.5   5.0 7th 65.2
Devonport Airport 21.4 +1.6 27.5 27th 11.7 +1.0 7.1 31st 60.8 50.9 average 119%
Launceston (Ti Tree Bend) 24.2 +1.6 29.9 11th 11.7 +0.9 7.5 31st 58.0 48.2 average 120%
Launceston Airport 23.4 +0.9 29.6 11th 10.0 +0.9 5.2 31st 48.0 48.3 average 99%
Low Head 20.6 +1.6 25.6 27th 13.6 +0.7 10.6 31st 67.2 42.5 high 158%
Luncheon Hill (Forestry) 20.3 +1.4 28.6 11th 9.6 +0.7 5.3 20th 72.2 86.8 average 83%
Marrawah 19.8 +1.4 26.0 12th 11.7 +1.0 8.5 20th 24.4 61.9 v low 39%
Scottsdale (West Minstone Road) 21.7 +0.8 25.8 11th 10.5 +1.2 6.3 7th 70.6 64.7 average 109%
Sheffield School Farm 20.5 +0.7 26.8 27th 9.7 +0.7 5.2 20th 46.6 61.9 average 75%
Smithton Aerodrome 21.0 +1.2 27.3 11th 10.1 +0.4 4.5 8th 45.8 55.3 average 83%
Wynyard Airport 21.0 +1.2 27.5 27th 11.0 +1.3 5.5 8th 85.0 64.0 high 133%
East Coast (district 92)
Bicheno (Council Depot) 20.3 +0.2 25.0 14th 12.8 +1.1 9.5 20th 87.4 68.2 high 128%
Fingal (Fleming St) 21.7   28.1 5th 8.5   3.7 17th 102.2
Friendly Beaches 22.2 +0.3 26.9 8th 12.5 +0.8 7.5 20th 103.0 53.6 high 192%
larapuna (Eddystone Point) 21.6 +2.2 26.1 5th 13.7 +1.7 9.7 17th 45.6 59.9 average 76%
Maria Island (Point Lesueur) 19.7 -0.1 23.4 13th 12.8 +0.5 9.6 10th 38.8 49.1 average 79%
St Helens Aerodrome 21.6 +0.3 28.2 5th 12.4 +0.6 8.4 20th 89.8 59.2 high 152%
Swan Island 20.6 +1.1 24.1 8th 14.5 +1.1 11.6 20th 25.4 44.4 average 57%
Swansea (Francis Street) 21.1 -0.2 25.3 14th 10.6 -0.5 3.7 10th 58.8 58.0 average 101%
Midlands (district 93)
Ross (The Boulevards) 23.1 +0.4 30.5 12th 8.3 -0.4 3.2 20th 53.8 39.7 high 136%
Southeast (district 94)
Campania (Kincora) 22.7 -0.1 31.3 13th 9.3 -0.8 3.2 10th 56.2 42.5 high 132%
Cape Bruny (Cape Bruny) 19.5 +0.9 26.0 27th 11.5 +0.8 8.5 30th 49.4 56.4 average 88%
Dennes Point 20.6 +0.3 25.6 13th 11.3 -0.5 6.8 10th 34.2 42.9 average 80%
Dover 20.8 +1.4 26.8 27th 9.1 0.0 4.3 10th 31.4 69.9 low 45%
Dunalley (Stroud Point) 21.4 +0.8 25.1 13th 12.1 -0.1 8.9 10th 23.6 38.4 low 61%
Grove (Research Station) 22.1 +0.9 31.0 13th 7.3 -1.2 0.4 10th 32.8 60.8 low 54%
Hobart (Ellerslie Road) 21.3 +0.9 27.3 13th 11.8 +0.9 6.6 10th 29.2 56.2 low 52%
Hobart Airport 21.9   28.9 13th 10.6   5.7 10th 29.6
kunanyi (Mount Wellington Pinnacle) 11.8 +0.5 21.1 13th 3.7 +0.7 -1.2 10th 57.6 88.5 average 65%
Maatsuyker Island Lighthouse 16.3 +0.6 22.4 13th 10.8 +1.1 8.0 30th 58.6 88.7 low 66%
Tasman Island 17.1 +0.5 19.9 13th 11.2 +1.0 7.3 30th 68.8 63.6 average 108%
Tunnack Fire Station 20.1 +0.6 28.3 13th 7.0 -0.5 -0.1 10th 51.0 52.3 average 98%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 23.8 +1.6 31.5 12th 9.1 0.0 2.0 10th 42.2 50.1 average 84%
Ouse Fire Station 23.6 +0.5 30.9 12th 9.0 +0.2 1.5 10th 46.4 36.2 high 128%
Central Plateau (district 96)
Butlers Gorge 18.2 +1.4 28.0 12th 5.7 +0.2 -2.3 10th 69.8 123.3 low 57%
Liawenee 17.5 +1.0 25.1 12th 4.5 +0.6 -1.7 10th 57.4 57.2 average 100%
West Coast (district 97)
Cape Sorell 19.3 +2.2 24.5 13th 12.3 +1.4 8.4 10th 45.0 79.2 low 57%
Hartz Mountain (Keoghs Pimple) 15.9 +0.8 25.7 12th 5.9 +0.6 2.2 30th 56.8 80.6 low 70%
Low Rocky Point 18.4 +0.2 22.7 13th 11.2 +0.3 7.7 12th 60.8 87.3 low 70%
Mount Read 12.8 +0.7 22.9 12th 5.1 +1.0 0.9 30th 199.4 281.0 low 71%
Scotts Peak Dam 20.5 +1.4 30.0 27th 8.6 +0.6 4.8 10th 95.2 139.6 v low 68%
Strahan Aerodrome 20.1 +0.3 26.5 13th 10.5 +0.7 4.2 10th 71.8 93.3 low 77%
Warra 18.2 +0.6 26.7 13th 7.2 +0.2 2.4 10th 73.2 128.6 lowest 57%
King Island (district 98)
King Island Airport 20.2 +1.2 29.3 8th 11.9 +0.8 5.3 24th 24.4 46.7 low 52%
Flinders Island (district 99)
Flinders Island Airport 22.0 +1.7 28.1 8th 13.2 +1.3 5.4 23rd 27.8 57.3 low 49%
Hogan Island 19.8 0.0 27.2 8th 14.0 +0.8 12.0 30th 34.2 40.5 average 84%
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, 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 6 pm on Monday 1 January 2024. 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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