Wednesday, 1 June 2011 - Monthly Climate Summary for Queensland - Product code IDCKGC24R0
Queensland in May 2011: Drier Over the West and North, a Cooler Month
- Below average May rainfall across most parts of the tropical and the western districts
- Slight above average rainfall over the southeast inland parts
- Cooler than average daily maximum means over most parts of the state, apart from the Cape York Peninsula
- Cooler than average daily minimum means across the entire state, especially so in northwestern parts
- Second coldest May for the state-averaged daily mean temperature
- Seventh coldest May for the state-averaged daily maximum temperature
- Second coldest May for the state-averaged daily minimum temperature
Main Weather Systems
The month started with a day of fine weather conditions across almost the entire state apart from some very isolated showers over the southeast coast.
A middle level trough approached the southwestern border on the 2nd and swept through the southern districts over the next two days. Isolated weak showers over the southern interior on the 2nd increased to patchy rain and scattered thunderstorms on the 3rd, then further spread over the southeast quadrant with some moderate falls near the southeast corner during the late 3rd and the early 4th.
A high moved across the Great Australian Bight and introduced dry and cool conditions to the interior of the state for the next few days. The southeasterly winds brought some coastal showers over the exposed parts of the central and southeast coasts during the 5th to the 7th, then moved into the southern tropical coast on the 8th and produced scattered showers along the tropical coast south of Cairns.
A surface trough extended from the Gulf Country into the Maranoa and Warrego district on the 8th then moved almost parallel with the southeast coast on early the 9th and intensified before moving off the coast line towards east. Isolated showers occurred over the southern and central interior on the 8th and increased to rain areas and scattered thunderstorms around the Darling Downs and Granite Belt district on the 9th before spreading over the southern and the central coasts region. As the trough moved away from the coast, the lingering moisture generated some isolated showers over the southeast quadrant on the 10th. The southwesterly wind behind the trough pushed a dry and cooler air stream over most of the state and maintained fine weather conditions over most parts between the 11th to 15th.
As the wind direction turned to south to southeasterly over the following days, showers dominated the Queensland east coast during 16th to 22nd while the interior and western parts of the state remained fine.
A surface trough approached the southwestern border on early 22nd and pushed a band of rain and scattered showers across the southwestern corner during that afternoon. Showers and thunderstorms associated with the surface trough progressed through the southern parts of the state and crossed the southeast coast during late 23rd and early 24th. Showers cleared the southeast quadrant of the state early on the 24th, then the entire state basked in mostly fine weather conditions through to 28th.
On the 29th, an upper level trough moved into the southwestern Queensland and coupled with a high level jet stream. This combination increased instability and dynamics over the southern and southeastern areas of the state. A surface trough formed over the central Darling Downs and pushed a band of rain and thunderstorms through the southeast during the late 29th to the 31st. Reports of pea size hails were received from many places over the southeast coast between the 30th to 31st.
The southeast inland parts received above long-term average rainfall and the remainder of the southeast, most of the western, the tropical and the interior parts of the state had less than average rainfall. The state averaged May monthly rainfall was 11.98 mm which was significantly below the long-term (1961-1990) May average rainfall of 30.48 mm. About 13.3% of the area received very much below average rainfall (decile 1 range). These areas included the north tropical coast, the central interior and a small area near the southwestern border.
The wettest overall was Bellenden Ker Top with 279.8 mm, followed by Rainbow Beach with 214.0 mm, then Point Lookout with 210.6 mm.Some sites had their highest total May rainfall for at least 20 years. Some sites had their lowest total May rainfall on record.
The wettest single day was at Point Lookout with 73.9 mm on the 30th, followed by Peachester with 58.2 mm on the 22nd, then Clermont Sirius St with 50.0 mm on the 20th.See a map of total rainfall. See a map of rainfall deciles.
The entire state experienced cooler than the long-term (1961-1990) average daily mean temperatures, with most of the northern and central parts significantly, 2 to 5 °C, below the averages. The state averaged mean temperature in May was 2.13 °C below the long-term (1961-1990) average of 19.88 °C. This figure was ranked the 2nd coldest May since the area-averaged dataset records started in 1950 and was the coldest since 1960 (1st).
The warmest on average was Coconut Island with 28.8 °C, followed by Horn Island with 27.4 °C, then Weipa Aero with 26.0 °C.
The coolest on average was Applethorpe with 10.2 °C, followed by Stanthorpe Leslie Parade with 10.8 °C, then Warwick with 12.8 °C.
Apart from the Northern Tropical Coast, most parts of the state had an average daily maximum temperature below the long-term (1961-1990) average, with the western and the central districts significantly, 2 to 3 °C, below the averages. The state averaged maximum temperature in May was 1.21 °C below the long-term (1961-1990) average of 26.20 °C. This figure was ranked the 7th coldest May since the area-averaged dataset records started in 1950 and was the coldest since 2000 (5th).
The hottest day was at Coconut Island with 34.1 °C on the 4th, followed by Coconut Island with 33.9 °C on the 5th, then with 33.7 °C at Burketown Airport on the 2nd, at Kowanyama Airport on the 23rd and at Coconut Island on the 24th.
The warmest days on average were at Coconut Island with 32.6 °C, followed by Scherger RAAF with 31.8 °C, then Weipa Aero with 31.4 °C.
The coolest days on average were at Applethorpe with 16.2 °C, followed by Stanthorpe Leslie Parade with 17.3 °C, then Toowoomba Airport with 18.2 °C.
The coldest day was at Applethorpe with 9.4 °C on the 25th, followed by Stanthorpe Leslie Parade with 10.4 °C on the 25th, then Miles Constance Street with 11.3 °C on the 31st.Some sites had their coldest May day (lowest maximum temperature) on record. Some sites had their lowest May mean daily maximum temperature on record. Some sites had their lowest May mean daily maximum temperature for at least 20 years. See a map of mean maximum temperatures. See a map of maximum temperature anomalies.
This May, the entire state experienced an averaged daily minimum temperature below the long-term (1961-1990) means, with the tropical, the western and the interior districts significantly, 3 to 6 °C, below the means. The state averaged minimum temperature in May was 3.05 °C below the long-term (1961-1990) average of 13.56 °C. This figure was ranked the 2nd coldest May since the area-averaged dataset records started in 1950 and was the coldest since 2001 (1st).
The coldest night was at Applethorpe with -2.8 °C on the 15th, followed by Stanthorpe Leslie Parade with -2.0 °C on the 15th and -1.9 °C on the 16th.
The coolest nights on average were at both Applethorpe and Stanthorpe Leslie Parade with 4.2 °C, followed by Mitchell Post Office with 4.8 °C, then Tambo Post Office with 5.0 °C.
The warmest nights on average were at Coconut Island with 25.1 °C, followed by Horn Island with 24.6 °C, then Willis Island with 23.6 °C.
The warmest night was at Coconut Island with 26.1 °C on the 5th, followed by 26.0 °C at Horn Island on the 5th and at Horn Island on the 24th, then Coconut Island with 25.9 °C on the 20th, the 22nd and the 24th.Some sites had their lowest May temperature on record. Some sites had their lowest May mean daily minimum temperature on record. Some sites had their lowest May mean daily minimum temperature for at least 20 years. See a map of mean minimum temperatures. See a map of minimum temperature anomalies.
The strongest wind gust was with 85 km/h at both Cape Moreton Lighthouse and Double Island Point Lighthouse on the 5th, followed by Double Island Point Lighthouse with 80 km/h on the 17th, then with 76 km/h at Dalby Airport on the 3rd and at Double Island Point Lighthouse on the 16th.
|Extremes in May 2011|
34.1 °C at Coconut Island on the 4th & 5th|
33.7 °C at Burketown Airport on the 2nd
33.7 °C at Kowanyama Airport on the 23rd
33.7 °C at Coconut Island on the 24th
|Warmest days on average||
32.6 °C at Coconut Island|
31.8 °C at Scherger RAAF
31.4 °C at Weipa Aero
|Coolest days on average||
16.2 °C at Applethorpe|
17.3 °C at Stanthorpe Leslie Parade
18.2 °C at Toowoomba Airport
9.4 °C at Applethorpe on the 25th|
10.4 °C at Stanthorpe Leslie Parade on the 25th
11.3 °C at Miles Constance Street on the 31st
-2.8 °C at Applethorpe on the 15th|
-2.0 °C at Stanthorpe Leslie Parade on the 15th
-1.9 °C at Stanthorpe Leslie Parade on the 16th
|Coolest nights on average||
4.2 °C at Applethorpe|
4.2 °C at Stanthorpe Leslie Parade
4.8 °C at Mitchell Post Office
|Warmest nights on average||
25.1 °C at Coconut Island|
24.6 °C at Horn Island
23.6 °C at Willis Island
26.1 °C at Coconut Island on the 5th|
26.0 °C at Horn Island on the 5th
26.0 °C at Horn Island on the 24th
25.9 °C at Coconut Island on the 20th, 22nd and 24th
|Warmest on average overall||
28.8 °C at Coconut Island|
27.4 °C at Horn Island
26.0 °C at Weipa Aero
|Coolest on average overall||
10.2 °C at Applethorpe|
10.8 °C at Stanthorpe Leslie Parade
12.8 °C at Warwick
|Wettest overall||279.8 mm at Bellenden Ker Top|
214.0 mm at Rainbow Beach
210.6 mm at Point Lookout
73.9 mm at Point Lookout on the 30th|
58.2 mm at Peachester on the 22nd
50.0 mm at Clermont Sirius St on the 20th
|Highest wind gust||
85 km/h at Cape Moreton Lighthouse on the 5th|
85 km/h at Double Island Point Lighthouse on the 5th
80 km/h at Double Island Point Lighthouse on the 17th
76 km/h at Dalby Airport on the 3rd
76 km/h at Double Island Point Lighthouse on the 16th
|Highest total May rainfall for at least 20 years|
for May 2011 (mm)
Most recent May
at least this wet
|Clermont Sirius St||76.8||157.9||in 1989||22||35.1|
|Record lowest May daily maximum temperature|
Lowest daily maximum
in May 2011 (°C)
|Dalby Airport||13.3||on the 31st||13.8||on the 31st in 2000||20||23.3|
|Record lowest May mean daily maximum temperature|
Mean daily maximum
for May 2011 (°C)
|Croydon Township||29.0||29.1||in 2006||86||31.7|
|St Lawrence Post Office||25.0||25.2||in 1983||71||26.8|
|Collinsville Post Office||25.5||25.6||in 1960||53||27.6|
|Injune Post Office||21.2||= 21.2||in 1968||43||23.5|
|Seventeen Seventy||22.8||23.4||in 1992||23||24.2|
|Bowen Airport||25.8||26.0||in 1990||20||27.1|
|Lowest May mean daily maximum temperature for at least 20 years|
Mean daily maximum
for May 2011 (°C)
Most recent May
at least this cool
|Cardwell Marine Pde||25.6||=25.6||in 1959||51||27.1|
|Sandy Cape Lighthouse||22.7||22.3||in 1960||50||24.1|
|Lady Elliot Island||23.2||23.1||in 1961||49||24.1|
|Mount Isa Aero||25.7||24.2||in 1968||43||27.9|
|Texas Post Office||20.8||20.7||in 1970||40||23.1|
|Double Island Point Lighthouse||21.3||21.2||in 1967||39||22.3|
|Mackay M.O||22.9||22.7||in 1972||39||24.2|
|Townsville Aero||26.8||26.5||in 1977||34||27.6|
|Stanthorpe Leslie Parade||17.3||16.8||in 1972||33||18.4|
|Cape Moreton Lighthouse||21.1||=21.1||in 1979||32||21.7|
|Ayr DPI Research Stn||26.4||26.3||in 1977||30||27.6|
|Clermont Sirius St||23.8||=23.8||in 1983||28||26.1|
|Mitchell Post Office||21.7||21.6||in 1983||28||23.1|
|Rockhampton Aero||24.7||24.4||in 1983||28||26.0|
|Taroom Post Office||23.1||22.6||in 1983||28||24.5|
|Mornington Island||27.3||26.3||in 1983||27||28.8|
|Oakey Aero||21.3||=21.3||in 1984||27||22.3|
|Baralaba Post Office||24.6||=24.6||in 1983||22||26.6|
|Proserpine Airport||25.5||25.3||in 1990||21||26.6|
|Tambo Post Office||22.7||22.4||in 1990||21||24.9|
|Record lowest May temperature|
in May 2011 (°C)
|Longreach Aero||0.5||on the 31st||1.4||on the 29th in 2000||46||12.0|
|Mount Isa Aero||1.8||on the 31st||1.9||on the 26th in 1974||45||13.9|
|Proserpine Airport||5.0||on the 27th||= 5.0||on the 30th in 2001||22||15.9|
|Bowen Airport||6.9||on the 27th||7.1||on the 30th in 2000||21||18.1|
|Record lowest May mean daily minimum temperature|
Mean daily minimum
for May 2011 (°C)
|Croydon Township||13.6||14.1||in 2001||88||17.9|
|Collinsville Post Office||10.7||= 10.7||in 1957||53||13.8|
|Gladstone Radar||15.1||15.2||in 1960||53||17.0|
|Moranbah Water Treatment Plant||10.5||11.2||in 2001||24||14.4|
|Seventeen Seventy||15.5||15.6||in 2008||23||17.0|
|Bowen Airport||14.1||= 14.1||in 2001||20||18.1|
|Lowest May mean daily minimum temperature for at least 20 years|
Mean daily minimum
for May 2011 (°C)
Most recent May
at least this cool
|Clermont Sirius St||8.4||7.1||in 1944||62||11.5|
|Barcaldine Post Office||9.7||9.4||in 1951||55||12.4|
|Quilpie Airport||8.0||=8.0||in 1957||54||10.9|
|Windorah Post Office||8.1||7.6||in 1951||54||11.3|
|Lady Elliot Island||18.2||15.8||in 1956||52||19.6|
|Sandy Cape Lighthouse||16.3||16.2||in 1961||49||17.5|
|Tambo Post Office||5.0||4.8||in 1962||48||8.2|
|Charleville Aero||5.8||5.5||in 1966||45||8.9|
|Bollon Mary St||6.3||6.1||in 1970||41||8.7|
|Double Island Point Lighthouse||16.0||15.8||in 1968||38||17.3|
|Springsure Comet St||7.9||7.7||in 1971||38||10.9|
|St Lawrence Post Office||13.1||12.9||in 1971||38||15.1|
|Cape Moreton Lighthouse||15.5||15.2||in 1979||32||16.4|
|Bundaberg Aero||12.7||12.2||in 1966||25||14.2|
|Summary statistics for May 2011|
|North Peninsula (district 27)|
|Coen Airport||29.9||32.1||9th||18.2||12.9||27th||0||18.2||v low||0%|
|Horn Island||30.2||+0.3||31.0||10th||24.6||-0.1||22.0||8th||2.6||67.0||v low||4%|
|South Peninsula (district 28)|
|Lockhart River Airport||28.5||-0.2||29.9||24th||20.1||-1.8||16.4||7th||25.2||108.9||low||23%|
|Lower Carpentaria (district 29)|
|Burketown Airport||29.6||-2.3||33.7||2nd||14.4||-3.8||9.3||27th||0||0.6||v low||0%|
|Julia Creek Airport||27.6||31.9||22nd||8.3||1.7||26th||0||5.6||v low||0%|
|Mount Isa Aero||25.7||-2.2||30.6||2nd||9.4||-4.5||1.8||31st||0||12.6||lowest||0%|
|Normanton Airport||29.5||-2.6||33.3||23rd||15.8||-3.5||11.4||27th||0||1.2||v low||0%|
|Sweers Island||26.4||-2.6||30.6||23rd||19.4||-2.5||15.3||30th||0||3.3||v low||0%|
|Upper Carpentaria (district 30)|
|Hughenden Airport||27.1||-1.6||31.7||23rd||9.3||-4.0||1.9||31st||0||4.4||v low||0%|
|Richmond Airport||27.6||-2.1||31.6||22nd||9.0||-4.1||2.3||26th||0||5.8||v low||0%|
|Richmond Post Office||27.8||-1.3||32.2||22nd||10.2||-2.9||3.5||26th||0||15.0||lowest||0%|
|Barron North Coast (district 31)|
|Cairns Aero||28.0||+0.4||30.4||4th||18.1||-1.8||12.1||14th||14.2||89.4||v low||16%|
|Kairi Research Station||22.9||-0.1||27.2||9th||12.1||-2.7||3.8||27th||29.7||57.3||low||52%|
|Low Isles Lighthouse||26.9||-0.7||30.6||9th||22.4||-0.5||20.0||27th||25.6||98.7||v low||26%|
|Walkamin Research Station||24.9||0.0||29.0||23rd||14.3||-1.9||8.3||14th||13.2||26.3||average||50%|
|Herbert North Coast (district 32)|
|Cardwell Marine Pde||25.6||-1.5||28.0||3rd||16.8||-0.8||9.6||27th||32.1||94.2||low||34%|
|South Johnstone Exp Stn||25.9||-0.3||29.8||9th||16.4||-1.9||10.0||13th||87.8||264.2||low||33%|
|East Central Coast (district 33)|
|Ayr DPI Research Stn||26.4||-1.2||29.8||4th||13.5||-2.7||6.2||27th||14.6||41.4||average||35%|
|Collinsville Post Office||25.5||-2.1||29.4||2nd||10.7||-3.1||4.6||14th||21.6||32.0||average||68%|
|Hamilton Island Airport||22.8||-1.7||25.7||8th||19.2||-1.4||15.1||26th||95.2||81.7||average||117%|
|Samuel Hill Aero||23.7||-1.3||27.6||2nd||12.2||-0.9||5.7||28th||95.8||78.1||high||123%|
|St Lawrence Post Office||25.0||-1.8||28.5||1st||13.1||-2.0||6.9||28th||40.2||47.6||average||84%|
|Yeppoon The Esplanade||22.4||-1.9||26.1||4th||13.2||-2.6||6.3||28th||73.4||74.4||average||99%|
|West Central Coast (district 34)|
|Charters Towers Airport||25.0||-2.5||28.9||23rd||12.2||-3.1||4.6||27th||28.3||20.8||high||136%|
|Moranbah Water Treatment Plant||24.5||-2.1||28.6||3rd||10.5||-3.9||5.1||28th||17.8||34.5||average||52%|
|Central Highlands (district 35)|
|Clermont Sirius St||23.8||-2.3||28.2||3rd||8.4||-3.1||2.1||28th||76.8||35.1||high||219%|
|Springsure Comet St||23.2||-2.1||27.9||1st||7.9||-3.0||1.6||26th||32.2||35.5||average||91%|
|Tambo Post Office||22.7||-2.2||28.0||2nd||5.0||-3.2||-0.5||31st||28.0||34.3||average||82%|
|Taroom Post Office||23.1||-1.4||28.4||2nd||7.9||-1.8||2.5||31st||18.4||40.4||average||46%|
|Central Lowlands (district 36)|
|Barcaldine Post Office||24.5||-1.5||29.1||2nd||9.7||-2.7||3.0||11th||1.8||30.5||low||6%|
|Isisford Post Office||25.2||-1.0||31.2||2nd||8.4||-2.8||2.4||27th||3.9||28.6||average||14%|
|Upper Western (district 37)|
|The Monument Airport||25.3||-2.4||31.3||2nd||8.2||-3.6||2.0||31st||0||7.5||v low||0%|
|Winton Airport||26.4||31.9||2nd||9.6||3.1||12th||0||15.8||v low||0%|
|Winton Post Office||25.8||-2.0||30.9||2nd||10.7||-2.3||4.2||26th||0.4||20.2||low||2%|
|Lower Western (district 38)|
|Bedourie Police Station||23.6||-3.0||30.9||22nd||10.5||-1.1||4.0||31st||1.2||11.2||average||11%|
|Windorah Post Office||23.8||-1.6||30.5||2nd||8.1||-3.2||1.7||26th||4.8||18.6||average||26%|
|Port Curtis South Coast (district 39)|
|Baralaba Post Office||24.6||-2.0||29.3||3rd||10.6||-1.7||4.5||26th||54.8||41.6||high||132%|
|Gayndah Airport||23.7||27.8||2nd||9.5||3.5||12th||58.0||33.4||v high||174%|
|Lady Elliot Island||23.2||-0.9||26.3||3rd||18.2||-1.4||15.1||25th||94.8||116.3||average||82%|
|Sandy Cape Lighthouse||22.7||-1.4||25.8||3rd||16.3||-1.2||13.0||27th||87.6||117.8||average||74%|
|Moreton South Coast (district 40)|
|Beaudesert Drumley Street||22.6||26.7||2nd||8.2||2.8||13th||67.8|
|Beerburrum Forest Station||22.9||-1.2||27.2||2nd||11.5||-1.2||6.7||12th||81.0||123.6||average||66%|
|Cape Moreton Lighthouse||21.1||-0.6||24.7||3rd||15.5||-0.9||11.7||25th||127.8||170.7||average||75%|
|Double Island Point Lighthouse||21.3||-1.0||27.3||3rd||16.0||-1.3||10.8||25th||136.8||147.3||average||93%|
|Gold Coast Seaway||22.8||-0.6||26.3||1st||13.7||-1.7||9.9||13th||65.4||119.8||average||55%|
|Hervey Bay Airport||23.4||-0.8||26.3||3rd||12.8||-1.3||6.9||12th||93.2||100.5||high||93%|
|Kingaroy Airport||20.7||-2.0||25.3||3rd||6.5||-0.6||0.8||12th||70.8||32.8||v high||216%|
|Logan City Water Treatment Plant||23.0||-1.0||26.7||2nd||11.3||-1.2||6.1||14th||81.5||114.7||average||71%|
|Maleny Tamarind St||20.2||-1.0||23.8||2nd||11.3||-0.5||8.0||25th||108.6||142.4||average||76%|
|Nambour DPI - Hillside||22.7||26.5||1st||12.2||6.7||12th||83.8|
|Sunshine Coast Airport||22.6||-0.7||25.1||3rd||12.1||-1.6||6.3||12th||94.2||168.5||low||56%|
|Tewantin RSL Park||22.5||-1.1||25.6||3rd||13.1||-1.7||7.9||12th||126.8||171.2||average||74%|
|University of Queensland Gatton||22.9||-0.8||27.1||1st||9.3||-0.9||4.3||15th||75.6||46.2||high||164%|
|East Darling Downs (district 41)|
|Stanthorpe Leslie Parade||17.3||-1.1||22.4||2nd||4.2||-1.2||-2.0||15th||57.7||47.0||average||123%|
|Texas Post Office||20.8||-2.3||25.8||2nd||7.1||-0.9||1.2||15th||29.9||39.7||average||75%|
|West Darling Downs (district 42)|
|Miles Constance Street||21.7||-2.3||27.4||2nd||6.7||-1.3||1.0||15th||27.6||23.0||high||120%|
|Maranoa (district 43)|
|Injune Post Office||21.2||-2.3||27.1||2nd||5.3||-2.5||0.0||27th||36.0||33.3||average||108%|
|Mitchell Post Office||21.7||-1.4||27.8||2nd||4.8||-2.3||-1.5||16th||24.2||32.5||average||74%|
|St George Airport||22.0||-1.2||28.6||2nd||6.9||-2.0||1.1||16th||15.4||28.2||average||55%|
|Warrego (district 44)|
|Bollon Mary St||22.6||-0.4||29.5||2nd||6.3||-2.4||-1.0||16th||10.6||32.5||average||33%|
|Cunnamulla Post Office||22.4||-0.5||28.3||1st||8.3||-1.5||2.9||27th||8.2||30.0||average||27%|
|Far Southwest (district 45)|
|Ballera Gas Field||22.2||29.3||22nd||2.4||27th||0.2||8.0||low||3%|
|Offshore Islands (district 200)|
|Middle Percy Island||21.9||25.3||3rd||17.5||13.1||26th||101.2||81.5||high||124%|
A Monthly Climate Summary is prepared to list the main features of the weather in Queensland using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.
This statement has been prepared based on information available at 10 am on Wednesday 1 June 2011. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
Averages 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 9 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
(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.