Tasmania in April 2020: very wet, with cool days

Tasmania had its wettest April since 1960 and rainfall totals were above average across the State. Cloudy skies resulted in daytime temperatures that were generally cooler than average, making it the State's lowest mean maximum temperature for April since 2006. Night-time temperatures though were warmer than average throughout the State, with Tasmania's mean minimum temperature equal seventh-highest on record for April.

Wettest April since 1960

  • Most of the State had above to very much above average rainfall in April
  • In all, Tasmania had its ninth-wettest April on record, and the wettest April since 1960
  • Statewide, April rainfall was 68% above average
  • Southwest and northeast regions of the State had rainfall totals more than 100 mm above average
  • Heavy rainfall in eastern Tasmania on the 3rd saw several sites have their highest April daily rainfall on record
  • Instances of snow falls across the State during April included snow down to around 600m elevation in the morning of the 5th and snow settling on kunanyi (Mount Wellington) in the morning of the 17th
  • Many sites, including Launceston, had either their highest total April rainfall on record or their highest total April rainfall for at least 20 years
  • The wettest site was Mount Read, with 527.4 mm for the month

Cool days, some warm nights

  • Daytime temperatures were generally cooler than average during April
  • Mean maximum temperatures for April were cooler than average across the State and Butlers Gorge had its lowest April mean daily maximum temperature since 1977
  • The mean maximum temperature for Tasmania as a whole was 1.45 °C below average, which was the lowest since 2006
  • Mean minimum temperatures were generally above to very much above average across the State thanks to several very warm nights—there were quite a few cooler than average nights though
  • The mean minimum temperature for Tasmania was 1.06 °C above average, which was the State's equal seventh-highest on record for April, and warmest since 2012
  • The cool days and warm nights reflected the generally cloudy conditions across the State, with solar radiation for April less than average, particularly across the south
  • The State's overall mean temperature was 0.19 °C below average for April
  • Several sites had either their highest April mean daily minimum temperature on record or their highest April mean daily minimum temperature for at least 20 years
  • Despite the cool days in April, the year-to-date average temperatures remain warmer than average in most areas of the State

Hobart (Ellerslie Road)

  • Hobart (Ellerslie Road) had its wettest April since 2011
  • Total rainfall for Hobart (Ellerslie Road) was 78.0 mm, which is 155% of the long-term average of 50.2 mm
  • The mean daily maximum temperature for Hobart (Ellerslie Road) was 17.3 °C, which is 0.1 °C below the long-term average of 17.4 °C
  • The warmest day was 22.1 °C on the 3rd, and the coolest day was on the 19th when the temperature reached 13.0 °C
  • The mean daily minimum temperature for Hobart (Ellerslie Road) was 10.4 °C, which is 1.4 °C above the long-term average of 9.0 °C
  • The coldest morning was 5.2 °C on the 9th, and the warmest morning was on the 26th when the minimum temperature was 14.5 °C

Strong winds at times

  • Winds were stronger than average at most locations, particularly across the central highlands
  • Wind run for April was the highest for at least ten years at many sites, including kunanyi (Mount Wellington Pinnacle), Launceston Airport, Devonport Airport, Butlers Gorge, Strahan Aerodrome, and Maatsuyker Island Lighthouse
  • The strongest gust was 146 km/h at Hogan Island on the 5th

Further information

Media
(03) 9669 4057

Extremes in April 2020
Hottest day 24.5 °C at Cape Bruny Lighthouse on the 3rd
Warmest days on average 19.4 °C at larapuna (Eddystone Point)
Coolest days on average 6.8 °C at Mount Read
Coldest day 0.3 °C at kunanyi (Mount Wellington Pinnacle) on the 17th
Coldest night -3.3 °C at kunanyi (Mount Wellington Pinnacle) on the 5th
Coolest nights on average 1.8 °C at kunanyi (Mount Wellington Pinnacle)
Warmest nights on average 12.4 °C at Swan Island
Warmest night 16.6 °C at Flinders Island Airport on the 16th
Warmest on average overall 15.0 °C at larapuna (Eddystone Point)
Coolest on average overall 4.4 °C at kunanyi (Mount Wellington Pinnacle)
Wettest overall 527.4 mm at Mount Read
Wettest day 121.4 mm at Orford (Aubin Court) on the 3rd
Strongest wind gust 146 km/h at Hogan Island on the 5th

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 April daily rainfall
New record
(mm)
Old
record
Years of
record
Orford (Aubin Court) 121.4 on the 3rd 72.4 on the 23rd in 1960 68
Llewellyn (South Esk River) 38.6 on the 30th 32.0 on the 8th in 2003 27
Ross (The Boulevards) 35.6 on the 3rd 32.0 on the 8th in 2003 27
Ross (Macquarie River) 33.8 on the 3rd 28.2 on the 8th in 2003 25
Nunamara Offtake (St Patricks River) 48.0 on the 3rd 42.2 on the 30th in 2014 24
Mount Morriston (Macquarie River) 44.6 on the 3rd 20.8 on the 24th in 2001 23



Record highest April total rainfall
New record
(mm)
Old
record
Years of
record
Average for
April
Launceston (Kings Meadows) 159.6 150.2 in 1960 90 56.3
Launceston (Ti Tree Bend) 131.2 124.6 in 1992 40 51.7
Ross (The Boulevards) 95.6 74.4 in 2003 27 36.7
Llewellyn (South Esk River) 110.4 75.6 in 2003 25 34.6
Melton Mowbray (North Stockman) 72.8 61.4 in 2011 24 29.5
Mount Seymour 95.8 90.2 in 2001 24 33.4
Smithton Aerodrome 118.4 107.4 in 2006 24 61.0
Cape Bruny (Cape Bruny) 116.0 96.6 in 2006 23 56.5
Lemana (Woodlands) 130.6 123.8 in 2003 23 62.7
Mathinna (South Esk River) 120.8 117.8 in 2003 23 48.4
Meander (Meander River) 171.4 150.6 in 2003 23 64.9
Targa (Mountain Views) 236.2 195.4 in 2010 23 92.8
Low Head 116.6 88.6 in 2009 22 55.2
Mount Barrow (South Barrow) 274.0 244.7 in 1968 22 117.5
Mount Read 527.4 495.4 in 1997 22 292.0
Nunamara Offtake (St Patricks River) 204.0 127.8 in 2006 22 68.3
Sheffield School Farm 170.2 110.0 in 2014 22 68.3
Strathbridge (Meander River) 104.8 103.8 in 2009 22 45.7
Bothwell (Clyde River) 68.0 50.2 in 2003 21 27.6
Cressy Research Station 97.4 82.6 in 2003 21 44.2
Ouse Fire Station 76.0 54.4 in 2003 21 33.1
Ross (Macquarie River) 95.6 69.0 in 2003 21 32.6
Upper Esk (South Esk River) 154.4 132.2 in 2003 21 65.4
Erriba (Jubb Road) 218.0 179.6 in 2012 20 103.3
Mount Morriston (Macquarie River) 109.6 60.0 in 2001 20 30.0

Highest April total rainfall for at least 20 years
Observed
(mm)
Most recent
higher
Average for
April
Orford (Aubin Court) 155.2 203.3 in 1974 55.6
Scottsdale (West Minstone Road) 191.8 203.8 in 1980 78.3
Wynyard Airport 149.8 173.6 in 1960* 71.9
Fingal (Legge Street) 156.8 181.8 in 1989* 51.4
Western Creek (Somer Hill) 179.2 262.4 in 1989* 86.2
Deviot Jetty 167.6 178.4 in 1989* 63.7
Pyengana (Forest Lodge Road) 228.4 338.2 in 1989* 96.5
Devonport Airport 107.8 191.4 in 1992 60.0
Forthside Research Station 155.4 198.6 in 1992 72.2
Barrington Post Office 171.3 216.8 in 1992* 81.3
Loongana (Serendipity) 221.4 243.5 in 1992* 122.7
Northdown (Hamley) 131.2 181.0 in 1992* 60.6
Westbury (Birralee Road) 118.5 131.6 in 1992* 60.4
Cape Sorell 145.2 154.9 in 1968* 107.8
Bushy Park (Bushy Park Estates) 77.6 110.2 in 1996 45.8
Lorinna 173.5 192.4 in 1961* 101.1
Marrawah 142.8 163.2 in 1995* 84.4
Rotherwood 79.3 118.8 in 1996 45.0
Wattle Hill 118.8 158.4 in 1996 55.2
Molesworth (Glen Dhu Road) 70.6 128.6 in 1996* 36.1
Queenstown (South Queenstown) 307.7 342.2 in 1997* 186.3

* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported




Lowest April mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
lower
Average for
April
Butlers Gorge 11.5 11.3 in 1977* 13.1

* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported




Record highest April mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
April
Lake St Clair National Park 5.0 4.7 in 2012 28 2.9
Melton Mowbray (North Stockman) 7.8 7.3 in 2010 23 5.8
Cressy Research Station 7.4 7.1 in 2010 21 5.5
Ouse Fire Station 7.4 6.9 in 2010 21 5.0

Highest April mean daily minimum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
April
Bushy Park (Bushy Park Estates) 7.5 8.1 in 1989 6.1



Summary statistics for April 2020
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
April
2020
Diff
from
average
Highest for
April
2020
Mean for
April
2020
Diff
from
average
Lowest for
April
2020
Total for
April
2020
Average
for
April
Rank of
April
2020
Fraction of
April
average
Northern (district 91)
Cape Grim 15.4   19.8 1st 11.3   6.7 5th 111.0 57.6 v high 193%
Cape Grim BAPS (Comparison) 15.5 -1.1 20.5 1st 11.2 -0.3 7.1 5th 115.0 64.8 high 177%
Cressy Research Station 16.6 -1.7 21.0 1st 7.4 +1.9 0.5 9th 97.4 44.2 highest 220%
Devonport Airport 16.9 -0.9 19.3 1st 10.0 +1.3 4.4 7th 107.8 60.0 high 180%
Launceston (Ti Tree Bend) 17.5 -1.5 21.3 1st 8.9 +1.4 3.0 19th 131.2 51.7 highest 254%
Launceston Airport 16.2 -2.0 20.0 1st 7.6 +1.0 1.9 6th 145.2 47.6 v high 305%
Low Head 16.8 -1.0 20.1 1st 11.8 +0.6 5.6 6th 116.6 55.2 highest 211%
Luncheon Hill (Forestry) 13.9 -1.8 19.5 9th 8.1 -0.1 3.2 5th 180.2 100.4 v high 179%
Marrawah 15.6 -1.3 19.5 3rd 10.1 -0.2 4.8 21st 142.8 84.4 v high 169%
Scottsdale (West Minstone Road) 15.9 -2.1 19.3 10th 8.3 +0.3 1.8 6th 191.8 78.3 v high 245%
Sheffield School Farm 14.7 -1.8 18.5 1st 7.5 +0.5 2.8 5th 170.2 68.3 highest 249%
Smithton Aerodrome 16.7 -1.2 20.6 3rd 9.1 +1.4 4.0 6th 118.4 61.0 highest 194%
Wynyard Airport 16.9 -0.7 19.4 1st 8.7 +1.5 1.7 6th 149.8 71.9 v high 208%
East Coast (district 92)
Bicheno (Council Depot) 18.4 -0.5 23.8 10th 9.8 -0.5 5.8 27th
Fingal (Legge Street) 17.0 -1.4 21.4 10th 6.0 +0.6 0.9 19th 156.8 51.4 v high 305%
Friendly Beaches 18.2 -0.7 23.3 10th 10.1 +0.3 4.2 9th 111.4 47.1 high 237%
Lake Leake (Elizabeth River) 13.1 -1.2 17.3 2nd 4.9 +0.8 -2.1 7th 111.6 67.9 high 164%
larapuna (Eddystone Point) 19.4 +1.5 22.8 10th 10.6 -0.5 5.1 19th 61.8 64.2 average 96%
Maria Island (Point Lesueur) 16.5 -1.2 20.2 10th 11.1 -0.3 7.2 5th 69.2 34.7 high 199%
Orford (Aubin Court) 17.3 -1.1 21.2 14th 8.8 +0.4 4.4 5th 155.2 55.6 v high 279%
St Helens Aerodrome 17.8 -0.8 21.1 3rd 9.7 +0.1 4.2 6th 71.6 52.1 high 137%
Swan Island 17.3 -1.0 19.9 1st 12.4 -0.4 8.2 5th 81.6 46.9 high 174%
Swansea (Francis Street) 17.9   22.5 10th 8.7   3.6 7th 94.2
Midlands (district 93)
Ross (The Boulevards) 15.9 -1.8 20.4 1st 6.7 +1.2 -0.9 9th 95.6 36.7 highest 260%
Southeast (district 94)
Campania (Kincora) 17.2 -1.9 22.2 14th 8.1 +0.6 2.1 9th 68.8 32.9 v high 209%
Cape Bruny (Cape Bruny) 15.7 -0.9 21.1 3rd 9.9 -0.1 4.3 5th 116.0 56.5 highest 205%
Cape Bruny Lighthouse 15.4 -0.2 24.5 3rd 9.9 +0.2 4.8 5th
Dennes Point 16.4   20.0 10th 10.6   6.1 9th 80.8
Dover 15.7 -1.3 20.6 14th 7.7 +0.6 1.9 9th 114.8 66.7 v high 172%
Dunalley (Stroud Point) 16.6   21.2 10th 10.6   5.8 5th 85.8
Grove (Research Station) 16.6 -1.4 21.6 3rd 7.8 +2.0 0.1 9th 77.0 46.9 high 164%
Hobart (Ellerslie Road) 17.3 -0.1 22.1 3rd 10.4 +1.4 5.2 9th 78.0 50.2 high 155%
Hobart Airport 17.2 -1.0 21.5 14th 9.4 +0.6 4.5 19th 72.6 40.7 high 178%
kunanyi (Mount Wellington Pinnacle) 6.9 -1.6 14.3 9th 1.8 -0.4 -3.3 5th 106.0 83.3 high 127%
Maatsuyker Island Lighthouse 13.4 -1.1 18.5 3rd 9.3 -0.2 4.2 5th 132.0 107.8 high 122%
Melton Mowbray (North Stockman) 15.7 -1.8 20.7 3rd 7.8 +2.0 1.0 9th 72.8 29.5 highest 247%
Tasman Island 14.3 -0.9 19.6 10th 9.7 -0.3 5.2 5th 101.8 64.7 high 157%
Tunnack Fire Station 13.7 -1.8 18.9 10th 6.1 +1.0 -0.6 9th 89.8 41.2 v high 218%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 17.3 -0.7 22.8 3rd 7.5 +1.4 1.1 9th 77.6 45.8 v high 169%
Maydena Post Office 14.6 -1.4 20.2 3rd 7.2 +1.7 1.7 9th 129.6 80.4 high 161%
Ouse Fire Station 16.8 -1.6 22.3 3rd 7.4 +2.4 -0.4 9th 76.0 33.1 highest 230%
Central Plateau (district 96)
Butlers Gorge 11.5 -1.6 17.6 9th 4.8 +1.4 -0.6 9th 189.4 140.7 high 135%
Lake St Clair National Park 11.7 -1.4 19.1 9th 5.0 +2.1 0.4 5th 239.8 133.9 v high 179%
Liawenee 10.4 -2.0 18.7 9th 3.0 +1.2 -2.3 9th 118.4 68.5 high 173%
West Coast (district 97)
Cape Sorell 15.6 0.0 20.5 1st 10.9 +0.6 6.1 5th 145.2 107.8 high 135%
Hartz Mountain (Keoghs Pimple) 9.3 -1.8 15.6 9th 4.2 -0.4 -0.6 5th 133.0 71.9 v high 185%
Low Rocky Point 14.8   20.3 3rd 10.1   5.7 5th
Mount Read 6.8 -2.1 11.9 9th 2.7 -0.7 -1.9 5th 527.4 292.0 highest 181%
Scotts Peak Dam 13.2 -1.7 19.4 1st 7.0 +0.2 2.4 5th 244.8 131.6 v high 186%
Strahan Aerodrome 15.8 -1.1 21.7 3rd 9.7 +1.2 5.2 5th 198.4 116.5 v high 170%
Warra 11.9 -1.8 16.6 9th 6.7 +0.9 0.7 5th 191.6 125.2 high 153%
King Island (district 98)
King Island Airport 16.8 -1.0 22.7 3rd 11.3 +0.8 6.7 5th 89.8 56.5 high 159%
Flinders Island (district 99)
Flinders Island Airport 17.7 -1.1 23.3 15th 11.8 +1.1 3.8 9th 84.6 57.6 high 147%
Hogan Island 16.9 -1.5 22.1 15th 12.2 -0.9 7.2 5th 88.0 51.1 high 172%
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 Friday 1 May 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