Tasmania’s winter this year has been the warmest since 1988, according to nomenclature records
Tasmanians haven’t had to search for UGG boots or down jackets as often over the past winter, with the nomenclature confirming it was the hottest in 33 years – and they’re rocking spring. to bring above average temperatures across the state.
Tasmania experienced its second warmest winter on record and warmest since 1988.
Average across state:
- Average temperature was 0.97 degrees Celsius higher than average (equal second highest on record)
- Average minimum temperature was 1.20 ° C above average (third highest on record)
- The average maximum temperature was 0.73 ° C above average (ninth highest on record)
The months of June, July and August all recorded average monthly temperatures above average in Tasmania.
Temperature records have been broken at many sites, including:
- Wynyard Airport (highest winter temperature 19.7 ° C on June 11)
- Strahan Airfield (warmest average winter maximum temperature 13.5 ° C)
- Bicheno (warmest average winter minimum temperature 7.4 ° C)
- Devonport Airport (warmest average winter temperature 10C)
Precipitation was near average for all of Tasmania, with records for the highest daily winter precipitation at King Island Airport in June (60.2mm on the 9th), at Cressy Research Station in July (91 mm on the 28) and at Mont Dromedary in August (53.2 mm on the 16).
June: drier in the west, wetter in the east and much warmer than average
June was drier than average in the western half of Tasmania, far to the north, while the east coast and the Furneaux Islands were wetter than average.
Widespread heavy rains and high winds during the second week of June left more than 2,000 homes without electricity.
This event brought some sites their highest daily precipitation on record in June – at Marrawah on the 8th (57.6mm), at Low Rocky Point on the 8th (46.4mm) and at King Island Airport on the 8th. 9 (60.2 mm).
On average across the state, precipitation was 13% below the long-term average for June and the lowest since June 2017.
The average minimum temperature was 1.59 ° C above the global average, giving Tasmania its fifth warmest June nights on record and warmest since 2003.
Tasmania’s average maximum temperature was 0.93 ° C above average, the highest since 2014.
Temperature records included the highest mean daytime temperature in June at Ross (12.9 ° C) and the highest mean nighttime temperature in June at Launceston (5.0 ° C).
Other highlights include:
- Hottest days on average: 15.1 ° C in Bicheno (Conseil Depot)
- Average hottest nights: 10.1 ° C in Swan Island
July: Mixed rains and less cold than usual
Precipitation in July contrasted with that in June in many parts of the state.
Northwest Tasmania experienced above average rainfall, particularly King Island, while the southeast coast was much drier than average around North West Bay to Scamander.
There was coastal flooding in parts of southeast Tasmania on the 24th due to a combination of waves and tides.
Meander (Meander River) recorded its highest total precipitation in July and almost double its July average, at 224.8 mm.
Meanwhile, Hobart’s total precipitation was only 14.2mm, well below its long-term average for July (51.8mm).
Precipitation for the state as a whole was 8% above average and the highest for July since 2019.
Parts of northern Tasmania had average maximum and minimum temperatures in the hottest 10 percent of records, including Wynyard Airport, which experienced its hottest July night on record on the 2nd with 12, 5 ° C.
Other highlights include:
- Hottest day: 18.2 C on friendly beaches on the 1st
- Hottest night: 13 ° C at Flinders Island Airport on 28
August: Typical precipitation for most and hottest nights since 2011
Rainfall in August was above average for a central western area and below average along parts of the east coast, but overall most of the state recorded totals of d ‘August close to average.
Precipitation for Tasmania as a whole was near average and slightly wetter than at the same time last year.
Mount Dromedary recorded its highest daily precipitation on August 16 (53.2 mm), after a vigorous cold front passed which brought widespread showers and damaging winds.
Days and nights were warmer than average in August, and average minimum temperatures were in the hottest 10 percent of all time highs in most of Tasmania.
Statewide, the average minimum temperature was 1.19 ° C above average, the 10th highest on record and the highest since 2011.
Despite this, Friendly Beaches recorded its lowest temperature on August 8, with a cold of -0.8 ° C.
Other highlights include:
- Hottest day: 20.2 C in Dover on the 10th
- Warmest overall: 11.7 ° C at King Island Airport
With the negative phase of the Indian Ocean Dipole underway, spring 2021 is expected to bring above average precipitation in northeast Tasmania.
Abnormally warm waters north of Australia and the eastern Indian Ocean are likely to influence Australian precipitation by providing moist airflow across the continent to the southeast, including the north -est of Tasmania.
Our models also indicate reduced westerly wind flows across Tasmania, which can influence below-average precipitation in the southwest and above-average temperatures throughout the state.
However, Tasmania generally experiences mixed weather in the spring, so we can still expect those westerly winds to pick up at times, along with the usual mix of warmer and cooler days across the state.
Dr Andrew Marshall is a climatologist at the Tasmanian Bureau of Meteorology