Tasmania in July 2020: Driest for the state since 1957

Parts of the north, east and west had their driest July on record, and for Tasmania it was the second driest on record after 1957. Days were warmer than average and night-time temperatures were mostly typical for July.

Second-driest July on record

  • Averaged across the state, July rainfall was 58.3% below the long-term average.
  • Some sites in the north, east and west had their lowest total July rainfall on record including Launceston Airport, Devonport Airport, King Island Airport, and Cape Bruny.
  • More than 50 mm of rainfall was reported across most of western Tasmania during the first week, with at least another 25 mm for the west over the third weekend, however monthly totals were generally less than 60% of average in most parts.
  • Persistent high-pressure over south-east Australia diverted cold fronts further south than usual, limiting rainfall over the state.
  • This month is a stark contrast to July 2019, when western Tasmania had above average rainfall, and highest on record from around Lake St Clair to Queenstown.

Warmer than average days, mixed nights

Hobart (Ellerslie Road)

  • Rainfall was very low around Hobart and it was a relatively mild month with several very warm days for July and only one very cold night.
  • Total rainfall for Hobart (Ellerslie Road) was 11.6 mm, which is 22% of the long-term average of 52.0 mm.
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 12.5 °C, which is 0.7 °C above the long-term average of 11.8 °C.
  • The warmest day was 15.6 °C on the 31st, and the coolest day was on the 10th when the temperature reached 8.6 °C.
  • The mean daily minimum temperature for Hobart (Ellerslie Road) was 4.6 °C, equal to the long-term average.
  • The coldest morning was 0.5 °C on the 8th, and the warmest morning was on the 5th when the minimum temperature was 8.7 °C.

Further information

Media
(03) 9669 4057

Extremes in July 2020
Hottest day 17.2 °C at Devonport Airport on the 5th
Warmest days on average 14.1 °C at Bicheno (Council Depot)
Coolest days on average 4.0 °C at kunanyi (Mount Wellington Pinnacle)
Coldest day 1.4 °C at kunanyi (Mount Wellington Pinnacle) on the 3rd
Coldest night -9.1 °C at Liawenee on the 17th
Coolest nights on average -2.7 °C at Liawenee
Warmest nights on average 8.9 °C at Hogan Island
Warmest night 11.4 °C at Cape Sorell on the 1st
11.4 °C at Flinders Island Airport on the 28th
Warmest on average overall 11.0 °C at Hogan Island
Coolest on average overall 1.4 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall 253.4 mm at Lake Margaret Dam
Wettest day 50.2 mm at Mount Read on the 5th
Strongest wind gust 117 km/h at Hogan Island 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 July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
Devonport Airport 17.2 on the 5th 16.7 on the 19th in 2001 29 12.8
Liawenee 12.2 on the 29th 12.0 on the 25th in 2007 20 5.6



Record highest July mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
kunanyi (Mount Wellington Pinnacle) 4.0 = 4.0 in 2014 39 2.5



Record lowest July temperature
New record
(°C)
Old
record
Years of
record
Average for
July
King Island Airport -1.2 on the 17th 0.0 on the 25th in 1999 26 7.7



Record lowest July mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
July
King Island Airport 5.8 6.3 in 2008 25 7.7



Lowest July mean temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
July
King Island Airport 9.7 9.5 in 1997 10.5



Summary statistics for July 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
July
2020
Diff
from
average
Highest for
July
2020
Mean for
July
2020
Diff
from
average
Lowest for
July
2020
Total for
July
2020
Average
for
July
Rank of
July
2020
Fraction of
July
average
Northern (district 91)
Cape Grim 12.3   14.4 31st 7.3   3.6 15th 37.4 124.7 v low 30%
Cape Grim BAPS (Comparison) 12.6 0.0 14.9 31st 7.5 -0.8 3.8 15th 42.8 109.6 v low 39%
Cressy Research Station 11.8 0.0 16.6 5th 0.7 -1.0 -3.4 22nd 31.0 63.8 low 49%
Devonport Airport 13.4 +0.6 17.2 5th 4.0 -0.7 0.0 23rd 23.4 95.7 lowest 24%
Launceston (Ti Tree Bend) 13.3 +0.6 16.0 5th 1.3 -1.1 -2.7 23rd 24.8 79.0 lowest 31%
Launceston Airport 11.8 0.0 15.4 5th 1.1 -1.1 -2.9 22nd 27.0 67.5 v low 40%
Low Head 12.8 0.0 14.4 1st 6.3 -0.7 1.8 24th 25.4 74.7 v low 34%
Luncheon Hill (Forestry) 11.2 +0.7 14.4 28th 4.9 -0.1 1.1 7th 70.6 201.0 lowest 35%
Marrawah 12.7 +0.3 15.0 29th 6.6 -0.2 3.3 28th 54.2 141.5 lowest 38%
Scottsdale (West Minstone Road) 12.6 +0.6 15.6 28th 3.0 -0.7 -0.3 22nd 56.4 118.6 low 48%
Sheffield School Farm 11.1 +0.3 14.6 5th 2.4 -0.9 -1.1 14th 44.2 134.7 lowest 33%
Smithton Aerodrome 13.5 +0.4 16.0 29th 3.1 -1.7 -2.3 17th 35.0 121.0 lowest 29%
Wynyard Airport 13.0 +0.3 15.6 5th 2.6 -0.9 -1.5 15th 25.4 131.4 lowest 19%
East Coast (district 92)
Bicheno (Council Depot) 14.1 0.0 16.8 21st 6.3 +0.2 2.6 8th
Fingal (Legge Street) 12.2 0.0 14.9 31st 0.2 -0.4 -4.1 8th 13.8 54.8 v low 25%
Friendly Beaches 13.6 -0.2 15.7 19th 5.0 -0.7 -0.2 8th 20.6 40.8 low 50%
Lake Leake (Elizabeth River) 8.9 +0.3 11.8 26th 0.0 -0.2 -4.9 8th 20.0 76.1 v low 26%
Maria Island (Point Lesueur) 12.1 -0.6 14.4 19th 7.4 0.0 4.2 8th 11.2 29.8 v low 38%
Orford (Aubin Court) 12.6 -0.5 15.7 19th 3.8 +0.2 0.0 8th 10.2 54.3 v low 19%
St Helens Aerodrome 14.0 +0.4 16.7 5th 4.5 -0.4 0.8 8th 21.8 45.3 low 48%
Swan Island 13.6 +0.3 16.2 1st 8.3 -0.1 5.1 23rd 0 65.7 v low 0%
Swansea (Francis Street) 13.0   15.6 19th 3.8   -1.6 8th 12.0
Midlands (district 93)
Ross (The Boulevards) 11.2 -0.1 14.1 21st 0.6 -0.9 -5.4 8th 25.4 41.1 low 62%
Southeast (district 94)
Campania (Kincora) 12.5 -0.7 16.0 19th 3.0 -0.4 -1.7 8th 13.6 36.2 v low 38%
Cape Bruny (Cape Bruny) 11.9 -0.2 14.6 31st 6.2 -0.4 2.9 8th 38.6 74.8 v low 52%
Cape Bruny Lighthouse 11.5 +0.2 14.2 31st 6.5 +0.3 3.4 8th 39.8 94.8 v low 42%
Dennes Point 12.0   14.5 31st 5.4   1.7 8th 9.0
Dover 12.5 +0.2 15.8 29th 3.0 -0.6 -1.2 8th 25.4 87.4 v low 29%
Dunalley (Stroud Point) 11.6   15.6 31st 5.9   2.5 8th 11.4
Grove (Research Station) 12.0 -0.2 15.3 31st 0.8 -1.2 -2.9 8th 18.0 67.6 v low 27%
Hobart (Ellerslie Road) 12.5 +0.7 15.6 31st 4.6 0.0 0.5 8th 11.6 52.0 v low 22%
Hobart Airport 12.5 0.0 15.6 31st 4.0 -0.2 0.6 8th 10.6 42.2 v low 25%
kunanyi (Mount Wellington Pinnacle) 4.0 +1.5 8.6 29th -1.1 +0.4 -3.8 7th 34.0 66.4 low 51%
Maatsuyker Island Lighthouse 10.8 -0.2 15.1 1st 7.1 +0.4 4.5 20th 53.2 128.7 v low 41%
Melton Mowbray (North Stockman) 10.8 -0.6 14.3 31st 1.5 -0.5 -3.8 8th 13.6 34.3 v low 40%
Tasman Island 10.7 -0.2 13.9 29th 6.6 0.0 3.3 8th 54.4 69.5 low 78%
Tunnack Fire Station 9.3 -0.3 11.9 19th 1.2 -0.3 -3.9 8th 20.8 40.9 low 51%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 11.3 +0.1 16.2 19th 1.2 -0.3 -3.1 8th 16.8 50.2 v low 33%
Maydena Post Office 10.3 -0.3 14.2 29th 1.6 -0.7 -2.1 17th 45.6 122.0 lowest 37%
Ouse Fire Station 10.9 -0.8 15.7 31st 0.9 -0.3 -4.7 8th 13.8 53.9 v low 26%
Central Plateau (district 96)
Butlers Gorge 8.3 +1.2 12.5 26th -0.7 -0.4 -4.6 18th 89.4 178.7 low 50%
Liawenee 6.5 +0.9 12.2 29th -2.7 -1.1 -9.1 17th 43.8 115.5 v low 38%
West Coast (district 97)
Cape Sorell 12.5 +0.7 15.1 30th 7.2 0.0 3.9 17th 51.8 154.5 v low 34%
Hartz Mountain (Keoghs Pimple) 6.5 +0.6 10.6 10th 1.4 0.0 -1.1 8th 52.6 106.9 v low 49%
Low Rocky Point 12.2   16.1 1st 6.5   1.9 8th
Mount Read 4.5 +0.8 8.9 28th 0.4 +0.2 -1.7 3rd
Scotts Peak Dam 9.8 +0.6 14.0 29th 2.5 -0.8 -1.5 14th 181.0 215.5 average 84%
Strahan Aerodrome 12.4 +0.1 15.8 1st 4.5 -0.8 -1.2 17th 85.0 178.8 v low 48%
Warra 8.5 -0.1 12.0 29th 2.2 -0.4 -1.6 17th 100.4 191.7 v low 52%
King Island (district 98)
King Island Airport 13.6 +0.3 15.8 28th 5.8 -1.9 -1.2 17th 36.4 115.6 lowest 31%
Flinders Island (district 99)
Flinders Island Airport 13.5 +0.1 16.5 1st 6.5 +0.2 -0.5 8th 23.4 81.2 v low 29%
Hogan Island 13.1 +0.2 15.2 1st 8.9 0.0 6.5 4th 36.0 74.6 low 48%
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 10 am on Monday 3 August 2020. 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