Tasmania in January 2017: cool days in the west, mild nights overall

Westerly winds were more common than usual over Tasmania in January 2017, resulting in the west having relatively cool days, but nights were mostly mild statewide. Rainfall was close to average for many areas, but below average in the west and above average in the northeast, with some localised heavy falls.

Rain near average overall

  • Thunderstorms on the afternoon of the 1st caused some locally heavy falls to the southeast and Derwent Valley, with Tea Tree having its highest January daily rainfall on record
  • A trough and front crossing the State on the 13th and 14th brought rain to most areas, with moderate to heavy falls in the west and north
  • A low passing just north of the State brought moderate falls to most areas on the 20th and 21st
  • Rainfall totals were close to average for much of the State, but below average in parts of the west and above above average in the north and northeast

Cool days in the west, many mild nights

  • Cool days were more frequent than warm ones overall, especially in the west, and it was particularly cool from the 18th to the 20th
  • There were some very warm days, especially on the 7th, 8th and 23rd in northerly winds ahead of cold fronts
  • Overall, daytime maximum temperatures were above the January average in the east of the State, but below average in the northwest
  • Mild nights were more frequent than cool ones, although there was a string of cool mornings from the 15th to the 22nd
  • The mornings of the 8th and 24th were especially mild, with several sites staying in the high teens or warmer in humid northeasterly winds; Bicheno equalled its record for warmest January night on the 24th
  • Overall, overnight minimum temperatures were above average across the State, especially so in the south

Strong winds and low pressure

  • Gusty westerly winds were more common than is typical for January
  • A number of sites registered wind gusts well over 100 km/h on several days, with Maatsuyker Island's 150 km/h on the 24th just exceeding kunanyi / Mount Wellington's 146 km/h on the 14th
  • A low pressure system passing close to the State saw atmospheric pressures drop to near-record low values for January on the 13th

A mild, windy month in Hobart

  • Hobart's mean maximum temperature of 23.0 °C was 1.3 °C above the long-term average, but the only day over 30 °C was the 8th with 31.3 °C
  • Hobart's mean minimum temperature of 13.5 °C was 1.6 °C above the long-term average, with the temperature not dipping below 20.3 °C on the morning of the 8th
  • Hobart registered 60.0 mm of rain for the month, with 33 mm of that falling in less than four hours on the afternoon of the 1st
  • Gusty westerly winds were more common than usual for January in Hobart, with gusts over 80 km/h on the 14th, 18th and 24th

Further information

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Extremes in January 2017
Hottest day 34.7 °C at Friendly Beaches on the 8th and Ouse Fire Station on the 23rd
Warmest days on average 25.2 °C at Ross (The Boulevards)
Coolest days on average 13.4 °C at Mount Read
Coldest day 6.5 °C at Mount Read on the 15th
Coldest night -2.7 °C at Liawenee on the 19th
Coolest nights on average 4.9 °C at Kunanyi (Mount Wellington Pinnacle)
Warmest nights on average 15.0 °C at Swan Island
Warmest night 20.3 °C at Hobart (Ellerslie Road) and Hobart Airport on the 8th
Warmest on average overall 18.8 °C at St Helens Aerodrome and Flinders Island Airport
Coolest on average overall 9.3 °C at Kunanyi (Mount Wellington Pinnacle)
Wettest overall 240.4 mm at Mount Read
Wettest day 68.0 mm at Mount Read on the 14th
Strongest wind gust 150 km/h at Maatsuyker Island Lighthouse on the 24th

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 January daily rainfall
New record
(mm)
Old
record
Years of
record
Tea Tree (The Point) 58.8 on the 2nd 52.6 on the 22nd in 2007 31
Mount Read 68.0 on the 14th 65.0 on the 23rd in 1997 21



Record highest January daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
January
Bicheno (Council Depot) 19.0 on the 24th = 19.0 on the 4th in 2015 42 13.0



Summary statistics for January 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
January
2017
Diff
from
average
Highest for
January
2017
Mean for
January
2017
Diff
from
average
Lowest for
January
2017
Total for
January
2017
Average
for
January
Rank of
January
2017
Fraction of
January
average
Northern (district 91)
Bridport (Sea View Villas) 22.0 +0.1 27.7 8th 12.5 -0.5 7.5 15th 73.0 56.1 high 130%
Burnie (Round Hill) 21.6 +0.5 27.3 8th 13.7 +1.0 9.5 21st 60.0 44.9 high 134%
Cape Grim 18.7   23.9 5th 13.6   9.0 19th 39.2
Cape Grim BAPS (Comparison) 19.0 0.0 24.0 5th 13.7 +0.6 9.0 19th 57.4 37.4 high 153%
Cressy Research Station 24.7 -0.5 31.3 8th 9.9 -0.4 1.7 19th 65.2 38.4 high 170%
Devonport Airport 21.6 +0.2 25.3 28th 12.5 +0.2 7.8 19th 28.8 43.6 average 66%
Launceston (Ti Tree Bend) 24.2 -0.2 30.4 23rd 12.4 +0.1 6.3 19th 50.4 47.9 average 105%
Launceston Airport 24.0 -1.1 31.0 8th 10.2 -0.7 4.6 15th 49.2 34.9 high 141%
Low Head 20.3 -0.1 24.4 8th 14.7 +0.4 11.3 19th 60.0 53.2 high 113%
Luncheon Hill (Forestry) 20.0 -1.4 28.4 23rd 11.0 +0.5 6.2 19th 88.4 76.6 average 115%
Marrawah 20.0 -0.2 26.0 7th 12.8 +0.8 8.5 19th 62.6 48.5 high 129%
Scottsdale (West Minstone Road) 22.6 -0.3 28.9 8th 10.9 +0.1 4.6 15th 82.2 57.5 high 143%
Sheffield School Farm 21.2 -0.9 27.1 8th 10.5 -0.1 3.9 19th 61.8 55.7 high 111%
Smithton Aerodrome 21.4 -0.2 25.0 22nd 11.9 +0.8 4.6 29th 53.0 41.3 high 128%
Wynyard Airport 22.2 +0.7 27.0 8th 11.7 +0.6 5.5 19th 60.0 44.2 high 136%
East Coast (district 92)
Bicheno (Council Depot) 22.0 +0.6 25.9 30th 13.4 +0.4 7.2 19th 68.6 54.6 high 126%
Fingal (Legge Street) 24.5 +1.0 32.2 8th 9.7 -0.6 2.5 15th 50.8 44.8 average 113%
Friendly Beaches 24.1 +1.0 34.7 8th 13.2 0.0 8.0 19th 90.0 69.2 average 130%
Lake Leake (Elizabeth River) 20.5 +1.0 28.1 8th 8.5 +0.1 0.6 19th 26.0 54.5 low 48%
Larapuna (Eddystone Point) 22.5 +1.8 29.6 8th 14.0 +0.8 8.5 15th 53.2 45.6 average 117%
Maria Island (Point Lesueur) 21.8 +0.4 29.4 8th 14.0 +0.4 11.0 21st 32.8 48.7 average 67%
Orford (Aubin Court) 23.0 +0.9 33.6 8th 12.7 +0.8 6.9 19th 42.6 51.7 average 82%
St Helens Aerodrome 24.0 +1.3 32.5 8th 13.6 +0.3 7.3 15th 103.0 62.5 high 165%
Swan Island 20.6 -0.3 24.5 8th 15.0 +0.1 11.7 21st 44.2 45.9 average 96%
Swansea (Francis Street) 23.5   34.5 8th 12.2   5.9 19th 33.8
Midlands (district 93)
Ross (The Boulevards) 25.2 +0.7 33.6 8th 10.3 -0.3 2.2 19th 29.8 45.7 average 65%
Southeast (district 94)
Campania (Kincora) 24.6 +0.3 31.7 8th 12.0 +0.5 4.4 19th 85.6 41.3 high 207%
Cape Bruny (Cape Bruny) 20.2 +0.4 26.6 7th 12.6 +0.5 8.7 18th 40.0 44.4 average 90%
Cape Bruny Lighthouse 19.4 +1.1 24.7 7th 12.9 +1.5 7.2 15th 39.5 61.6 average 64%
Dennes Point 21.9   30.5 8th 13.4   9.1 19th 30.6
Dover 21.8 +1.0 28.8 7th 11.6 +1.4 6.0 29th 36.4 53.7 average 68%
Dunalley (Stroud Point) 22.4   31.9 8th 13.9   10.4 29th 40.6
Grove (Research Station) 22.6 -0.7 31.0 23rd 10.5 +0.8 3.5 29th 42.4 46.8 average 91%
Hobart (Ellerslie Road) 23.0 +1.3 31.3 8th 13.5 +1.6 9.1 19th 60.0 47.6 high 126%
Hobart Airport 23.7 +1.1 32.2 8th 13.2 +1.1 7.4 19th 38.2 40.8 average 94%
Kunanyi (Mount Wellington Pinnacle) 13.7 +0.3 22.1 23rd 4.9 +0.1 -0.3 19th 76.8 92.1 average 83%
Maatsuyker Island Lighthouse 16.2 -0.9 26.0 7th 11.6 +0.8 8.6 31st 66.0 78.9 average 84%
Melton Mowbray (North Stockman) 24.0 +0.1 33.9 23rd 10.9 +0.5 3.7 19th 34.4 32.8 average 105%
Tasman Island 18.2 +0.2 24.0 13th 12.0 +0.6 9.7 4th 35.4      
Tunnack Fire Station 22.5 +0.8 30.2 8th 9.1 +0.2 0.5 19th 35.2 45.2 average 78%
Derwent Valley (district 95)
Bushy Park (Bushy Park Estates) 24.6 +0.6 33.0 23rd 10.9 +0.8 3.9 19th 43.4 40.9 average 106%
Maydena Post Office 21.2 -0.9 31.3 23rd 10.1 +1.1 3.8 19th 51.4 61.8 average 83%
Ouse Fire Station 24.8 -0.6 34.7 23rd 11.1 +0.9 3.6 19th 33.0 27.2 average 121%
Central Plateau (district 96)
Butlers Gorge 18.7 -0.2 29.9 7th 7.5 +1.1 -1.3 19th 73.8 96.0 average 77%
Liawenee 19.1 +0.3 25.3 27th 5.3 0.0 -2.7 19th 33.6 53.9 average 62%
West Coast (district 97)
Cape Sorell 19.6 +1.3 26.8 7th 13.2 +1.4 9.4 19th 51.0 68.7 average 74%
Hartz Mountain (Keoghs Pimple) 15.8 -1.9 26.8 7th 7.0 -0.1 2.5 19th 54.2 67.2 average 81%
Low Rocky Point 18.4   25.8 7th 12.2   9.4 29th 73.8 80.1 average 92%
Mount Read 13.4 -1.0 25.8 7th 5.8 0.0 1.4 19th 240.4 203.1 average 118%
Scotts Peak Dam 19.4 -1.4 34.1 7th 9.8 +0.5 6.0 19th 82.4 103.6 low 80%
Strahan Aerodrome 20.5 -0.3 32.4 7th 11.9 +1.2 4.6 19th 74.0 84.2 average 88%
Warra 18.4 -1.0 27.0 7th 8.6 +0.3 1.8 19th 112.4 108.8 average 103%
King Island (district 98)
King Island Airport 20.4 -0.5 28.8 23rd 13.4 +1.0 5.2 19th 54.6 39.8 high 137%
Flinders Island (district 99)
Flinders Island Airport 22.5 +0.3 33.6 8th 14.8 +1.4 10.0 21st   44.9    
Hogan Island 21.4 -0.2 29.5 8th 14.8 0.0 12.7 19th 23.2 37.2 average 62%
Antarctica and Macquarie Island (district 300)
Macquarie Island 9.1 +0.3 11.1 15th 5.2 -0.1 3.5 19th 115.8 87.1 high 133%

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 11 am on Wednesday 1 February 2017. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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
Enquiries