Monday, 1 July, 2013 — Monthly Summary for Australia — Product Code IDCKGC1A00
June maximum temperatures were 0.16 °C above average for Australia as a whole and minima 1.44 °C above average, the ninth highest on record for June. Maxima were above average across northern Australia, most of the southeast and for part of southwest Western Australia. Maxima were below average in a broad band generally corresponding to the influence of northwest cloudbands, across the Kimberley, Pilbara and Interior of Western Australia, central Australia and pastoral South Australia. For minima, all States and the Northern Territory recorded positive anomalies. Minima were above to very much above average for most of Australia. Below-average minima were recorded in parts of the Gascoyne and southwest Western Australia and a small area extending inland from Rockhampton in Queensland. Much of Victoria and adjacent southeast South Australia recorded near-average minima for June.
June rainfall was above average when averaged over Australia as a whole, although this concealed marked differences across the country. Rainfall was generally above average for the southeast mainland, South Australia, the northern half of Western Australia and the Top End. Tasmania, southern Western Australia, Queensland and adjacent parts of the Northern Territory recorded below average rainfall.
Both maximum and minimum temperatures were above average for Australia during June, continuing the string of warm months since September 2012. Averaged over Australia, maxima were 0.16 °C above average. South Australia and Western Australia were the only States with cooler-than-average maxima, the coolest since 1995 for Western Australia. All other States and the Northern Territory recorded above-average maxima, with Queensland's anomaly the largest at +0.82 °C. Maxima were above average across the tropical north, with parts of the Top End, Kimberley and Cape York Peninsula recording maxima in the highest 10% of records. Maxima were also above average for southern Queensland away from the coast, along the coast of Western Australia from Shark Bay to Albany, most of Victoria and southern New South Wales, and Tasmania. South Australia and Western Australia recorded negative anomalies (−0.37 and −0.44 °C below average, respectively) as frequent cloudbands resulted in below-average maxima covering Western Australia from Broome to Exmouth, across the Interior to central Australia, and much of South Australia from the northwest to the top of the Spencer Gulf. Maxima were in the lowest 10% of records for a large part of this area.
Minimum temperatures were the ninth-warmest on record for June nationally, with an anomaly of +1.44 °C. The Northern Territory recorded the largest anomaly with +2.13 °C, the ninth-warmest June on record for the Territory and warmest June since 1996. South Australia, Queensland, New South Wales and Tasmania, also recorded anomalies in excess of one degree: +1.58, +1.57, +1.47 and +1.00, respectively. Minima were above average across most of Australia with large areas across the north, centre, around the Bight and through central New South Wales in the highest 10% of records. Minima were near average for most of Victoria and adjacent parts of southeastern South Australia and the Riverina in New South Wales, and also near average surrounding a small area of below average minima extending inland from Rockhampton in Queensland and a larger area of coastal and inland Western Australia centred around Perth.
|Areal average temperatures|
|Maximum Temperature||Minimum Temperature|
(out of 104)
(out of 104)
|New South Wales||70.5||+0.33||93||+1.47|
|Western Australia||42||−0.44||lowest since 1995||90||+1.00||highest since 1998|
|Northern Territory||78||+0.66||96||+2.13||ninth highest, highest since 1996|
*Anomaly is the departure from the long-term (1961–1990) average.
A fractional rank indicates that the value is tied for that rank.
June rainfall was 28% above the long-term average when averaged across the nation (area-average rainfall of 29.6 mm). However, this was a result of very-much-above-average rainfall in some places and very-much-below-average rainfall in other places. Queensland recorded the largest negative departure from average at −63%, with rainfall below average across much of that State and adjacent parts of the Northern Territory; although away from Queensland's east coast it is typically dry at this time of year. June was also notably dry in Tasmania, with the area-average rainfall the 11th lowest for June and much of northern Tasmania receiving totals in the lowest 10% of records. Western Australia south of a line from Shark Bay to the top of the Great Australian Bight recorded below-average rainfall, with much of the west of this area in the lowest 10% of records and large areas of the Southwest Land Division recording their lowest June rainfall on record.
In contrast, a large part of Western Australia inland of Karratha and Port Hedland recorded their highest June total on record. Much of the Pilbara, Gascoyne and northern Interior districts received totals in the highest 10% of records, mostly as a result of numerous cloudbands during the month, some of which set daily records for June rainfall at locations in the northwest. Rainfall was also above average for parts of the Top End.
Rainfall was generally above average for South Australia, New South Wales, and Victoria although southwestern and north-central Victoria received near-average totals. Those States recorded large positive departures from the long-term average, with +74%, +86% and +57% respectively. June was also the wettest for Victoria since 1995. Most of Gippsland and the area west of Port Phillip Bay in Victoria; the area around Spencer Gulf and Port Augusta, extending north to Marree and Tarcoola in South Australia; and a large area of central and western New South Wales recorded rainfall in the highest 10% of records as well as other small areas scattered across the southeast. Much of this rainfall was associated with northwest cloudbands or East Coast Lows, both of which were frequent throughout the month.
(out of 114)
|New South Wales||98||72.1||+86%|
|Victoria||103||93.1||+57%||highest since 1995|
|Western Australia||89||37.2||+46%||highest since 1998|
*The mean is calculated for the 1961–1990 reference period.
|Australian weather extremes during June 2013|
|Hottest day||37.4 °C at Douglas River (NT) on 16 June|
|Coldest day||−2.1 °C at Mount Hotham (Vic.) on 15 June|
|Coldest night||−11.2 °C at Liawenee (Tas.) on 23 June|
|Warmest night||27.1 °C at Troughton Island (WA) on 6 June|
|Wettest day||223.6 mm at Roebourne (WA) on 25 June|
The Monthly Climate Summary is prepared to list the main features of the weather in Australia using the most timely and accurate information available on the date of publication; it will generally not be updated.
This statement has been prepared based on information available at 12 pm EST on Monday 1 July 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available, especially for rainfall where much more data becomes available as returns are received from volunteers.
Long-term averages in this statement and associated tables are for the period 1961 to 1990 unless otherwise specified.
In the tables, fractional ranks denote tied values.
A new area-averaging method was adopted for rainfall in May 2009. Current and historical totals for Tasmania are substantially higher than under the old scheme, but differences for other states, and nationally, are negligible. The rankings and departures from mean shown here use the new method.
The new ACORN-SAT temperature dataset has been used for calculation of State and national temperature area averages in summaries from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.