Rainfall for the year was above average for eastern Victoria, much of New South Wales, southern and central west Queensland, the west of Western Australia, and much of the far northern tropics, when compared to the distribution across all years since 1900. The national rainfall dataset commences in 1900.
Rainfall for Australia was 9% above average for the nation as a whole at 509.7 mm, compared to the 1961–1990 average of 466.0 mm. The national temperature dataset, ACORN-SAT, commences in 1910 and spans 112 years of observations.Ģ021 was Australia's 19th-warmest year on record, and the coolest year since 2012, when the conclusion of the moderately strong 2011–12 La Niña brought cooler and wetter conditions for the first half of the year.Īnnual mean temperatures for 2021 were above average for most of northern Australia, Tasmania, and large parts of the Western Australia, but below average for parts of inland New South Wales, compared to the distribution across all years since 1910. The mean maximum temperature was 0.65 ☌ above average and the mean minimum temperature was 0.45 ☌ above average. About deciles.Īustralia's area-averaged mean temperature for 2021 was 0.56 ☌ above the 1961–1990 average. See also annual mean maximum temperature (left) and annual mean minimum temperature (right).
A Negative Indian Ocean Dipole in winter and spring also fuelled above-average winter–spring rainfall over parts of southern Australia, compared to the distribution of rainfall across all years since 1900Ī warmer than average year for Australia, despite La Niña in successive summersĢ021 annual mean temperatures compared to historical temperature observations (top).La Niña persisted through summer 2020–21, returning to neutral during March, with signs of it emerging again in early spring, and becoming established in late November.Flooding affected eastern and central Australia during the second half of March, parts of Victoria during June, and across large areas of New South Wales and Queensland from November into December.While southern Murray–Darling Basin water storages saw significant increases during winter and spring 2021, storage levels remained low in south-east Queensland.Above average rainfall, compared to the distribution of rainfall across all years since 1900, brought relief from drought in Western Australia in March, and in Queensland in November.The year commenced with parts of south-west to central Western Australia, as well as the south-eastern quarter of Queensland, affected by meteorological drought, with rainfall for the period commencing April 2020 in the lowest 10% of historical observations.Rainfall was below average, compared to the distribution of rainfall across all years since 1900, for a few areas, such as around the border of South Australia and Victoria.Rainfall was above average, compared to the distribution of rainfall across all years since 1900, for eastern Victoria, much of New South Wales, southern and central west Queensland, the Gascoyne and South West Land Division in Western Australia, and much of the far northern tropics, including the Top End of the Northern Territory and Cape York Peninsula in Queensland.Nationally-averaged rainfall was 9% above the 1961–1990 average at 509.7 mm.
Severe to extreme heatwave conditions affected the Kimberley and Top End during October, and parts of the north in November and December.July and August were particularly warm, with the national mean temperature fourth-warmest and sixth-warmest on record for their respective months.Both mean annual maximum and minimum temperatures were above average for most of northern Australia, Tasmania, and parts of the west coast, but below average for parts of inland New South Wales.Australia's national mean temperature was 0.56 ☌ warmer than the 1961–1990 average, making 2021 the 19th-warmest year on record, and coolest since 2012.
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