Australia in June 2010

In Brief

June 2010 was drier than normal across almost all of Australia, making it the continent’s fourth-driest June on record. Temperatures were mostly fairly close to normal, except in parts of Western Australia and the far north where they were substantially above normal.


Temperatures

Nationally averaged temperatures were slightly above normal. Both maximum and minimum temperatures were 0.25°C above the long-term average, ranking 25th and 30th highest on record respectively. No state or territory ranked in the top or bottom ten.

Maximum temperatures were above normal in most of Western Australia, except the far north and south, and parts of the Goldfields. The Pilbara and west Kimberley were especially warm, with monthly temperatures at least 1°C above average across the region, reaching 3-4°C above average in the west Pilbara, where some records were set. The other significant area with maximum temperatures well above normal was the Cape York Peninsula, where anomalies ranged from 1-2°C. Most remaining parts of Queensland, except the far southwest, were slightly warmer than normal, as was most of NSW (except the northeast corner), almost all of Tasmania, and the northern Top End of the Northern Territory. Remaining regions, including most of Victoria and South Australia, and the southern two-thirds of the Northern Territory, had slightly cooler days than normal, with only a few patches (mostly in the southern NT) as much as 1°C below normal.

Most of Western Australia away from the southwest also had warmer-than-average nights. Most areas north of a Geraldton-Kalgoorlie line, except the north Kimberley, had minimum temperatures at least 1°C above normal. As for maximum temperatures, the largest anomalies, of 3-4°C, were in the west Pilbara and records were set locally. The NT Top End and Cape York Peninsula also showed similar warmth to that which occurred for maximum temperatures, with nights 1-2°C warmer than normal in parts of both regions, especially Cape York Peninsula where a few records were set in the far north and on the Torres Strait Islands. Most remaining areas of eastern Queensland also had above-average minimum temperatures, as did most of New South Wales except the Southern and Central Tablelands.

Nights were substantially cooler than normal in Western Australia’s southwest, with minimum temperatures mostly 1-2°C below average. Minimum temperatures were also below normal, although generally only slightly so, over the bulk of Victoria, Tasmania (except the west coast) and South Australia, and southern regions of the Northern Territory.


Areal average temperatures
  Maximum Temperature Minimum Temperature
Rank
(out of 61)
Anomaly*
(°C)
Comment Rank
(out of 61)
Anomaly*
(°C)
Comment
Australia 37 +0.25 32 +0.25
Queensland 40 +0.67 33 +0.21
New South Wales 36 +0.26 31 +0.14
Victoria 33 +0.01 28 +0.06
Tasmania 47 +0.72 28 −0.04
South Australia 23 −0.33 29 +0.14
Western Australia 45 +0.61 48 +0.81 Highest since 1998
Northern Territory 19 −0.52 19 −0.55

*Anomaly is the departure from the long-term (1961-1990) average.


Temperature maps
MeanAnomalyDeciles
Mean
daily
maximum
temperatures
Map of mean daily maximum temperature Map of mean daily maximum temperature anomalies Map of mean daily maximum temperature deciles
Mean
daily
minimum
temperatures
Map of mean daily minimum temperature Map of mean daily minimum temperature anomalies Map of mean daily minimum temperature deciles

Rainfall

Nationally averaged rainfall was 52% below normal. The southwest region of Western Australia had its third-driest June on record (60% below normal). No state or territory ranked in the driest 10 years, but all were drier than normal, ranging from 94% below normal in the Northern Territory and 73% in Queensland, to 4% below normal in Tasmania and 18% in Victoria.

Dry conditions were notably consistent across Australia with less than 5% of the country reaching its mean monthly rainfall for June. These few areas included the northern half of Tasmania (except the far northwest), the Melbourne area, some parts of the southern coastal fringe of South Australia, North-West Cape in Western Australia, and parts of the northeast quarter of New South Wales, including coastal areas between Sydney and Port Macquarie, and parts of the northwest slopes of the Great Dividing Range.

Most of the southwest of Western Australia south of a Geraldton-Kalgoorlie line, except for the southern coastal fringe from Albany eastwards, had June rainfall in the lowest decile, and records were set in a few places. Large parts of northern and central Australia (most of which are normally dry at this time of year) had no rain, including most of the Northern Territory except the far southwest, most of the northern half of Western Australia, the western half of Queensland and the far north of South Australia. Elsewhere, while rainfall was generally below normal, the only area with widespread falls in the lowest decile was southeastern Tasmania around Hobart.


Areal average rainfall
Rank
(out of 111)
Average
(mm)
Departure
from mean*
Comment
Australia 4 11.2 −52% Lowest since 1984
Queensland 15 4.9 −73%
New South Wales 29 28.4 −27%
Victoria 28 49.0 −18%
Tasmania 43 123.1 −4%
South Australia 25 9.3 −51%
Western Australia 11 10.1 −60%
Northern Territory 25 0.4 −94%
Murray-Darling Basin 20 22.1 −34%

*The mean is calculated for the 1961-1990 reference period.


Rainfall maps
TotalsPercentagesDeciles
Total
rainfall
Map of total rainfall Map of percentage of normal rain Map of rainfall deciles


Australian weather extremes in June 2010
Hottest day 36.2 °C at Bidyadanga (WA) on the 19th
Coldest day −5.3 °C at Mount Hotham (Vic) on the 28th
Coldest night −13.5 °C at Charlotte Pass (NSW) on the 14th and 28th
Warmest night 26.5 °C at Coconut Island (Qld) on the 1st and 8th
Wettest day 174.2 mm at Alstonville (NSW) on the 3rd


Notes

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 noon on Thursday 1 July 2010. 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.


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