Greater Brisbane in winter 2017: warm days; near-average rainfall

Rainfall in Greater Brisbane was close to the long-term average for winter at most locations. Daytime temperatures were record warm at some locations. Overnight temperatures for winter were slightly below average at inland locations, and slightly above average at remaining sites.

This summary includes data from observing sites in or near the Greater Brisbane “Greater Capital City Statistical Area” (GCCSA) – see the notes.

Near-average rainfall overall

  • Winter rainfall was near-average at most locations in Greater Brisbane, following near-average June and July rainfall
  • Winter rainfall totals ranged from around 80 mm at Amberley in western suburbs, to more than 330 mm at Point Lookout on North Stradbroke Island
  • More than 114 mm was recorded in the 24 hours to 9 am on 14 June at Dunwich on North Stradbroke Island; this was the highest daily rainfall recorded during winter

Very warms days overall, cool than usual nights overall at inland locations

  • Mean maximum temperatures were well above average, record warm at some locations or the warmest in several decades
  • The main observing site in Brisbane had its warmest winter mean maximum temperature on record with 23.5 °C, beating the previous record of  23.3 °C set in 2004
  • Very warm days in the middle of August, with most locations recording their warmest winter day between 16 and 18 August
  • Mean minimum temperature were above average for most locations, but below average at inland stations in Gatton and Amberley
  • Cold nights on 9 and 10 August, with Gatton and Amberley recording overnight temperatures below zero

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Extremes in winter 2017
Hottest day 33.9 °C at Amberley AMO on 16 Aug
Warmest days on average 23.9 °C at University of Queensland Gatton
Coolest days on average 21.0 °C at Cape Moreton Lighthouse
Coldest day 15.2 °C at Archerfield Airport and University of Queensland Gatton on 7 Jul
Coldest night -1.0 °C at University of Queensland Gatton on 26 Jul and 10 Aug
Coolest nights on average 5.5 °C at Amberley AMO
Warmest nights on average 15.4 °C at Cape Moreton Lighthouse
Warmest night 19.6 °C at Cape Moreton Lighthouse on 29 Jun
Warmest on average overall 18.2 °C at Cape Moreton Lighthouse
Coolest on average overall 14.7 °C at Amberley AMO
Wettest overall 332.4 mm at Point Lookout
Driest overall 34.3 mm at Fort Lytton
Wettest day 114.2 mm at Dunwich on 14 Jun
Strongest wind gust 94 km/h at Cape Moreton Lighthouse on 13 Jun


Record highest winter mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
University of Queensland Gatton 23.9 23.3 in 2004 94 21.4
Archerfield Airport 23.5 23.3 in 2004 42 21.7
Logan City Water Treatment Plant 23.1 22.8 in 2004 24 21.9
Brisbane Aero 22.4 22.3 in 2004 23 21.3
Point Lookout 23.0 22.7 in 2009 20 21.6

Highest winter mean daily maximum temperature for at least 20 years
Observed
(°C)
Most recent
higher
Average for
winter
Cape Moreton Lighthouse 21.0 21.2 in 1910 19.5
Amberley AMO 23.8 24.0 in 1942 21.8



Record highest winter mean daily minimum temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
Cape Moreton Lighthouse 15.4 = 15.4 in 1993 107 13.8



Record highest winter mean temperature
New record
(°C)
Old
record
Years of
record
Average for
winter
Cape Moreton Lighthouse 18.2 18.0 in 2013 107 16.6



Summary statistics for winter 2017
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
winter
2017
Diff
from
average
Highest for
winter
2017
Mean for
winter
2017
Diff
from
average
Lowest for
winter
2017
Total for
winter
2017
Average
for
winter
Rank of
winter
2017
Fraction of
winter
average
Amberley AMO 23.8 +2.0 33.9 16 Aug 5.5 -0.7 -0.9 20 Aug        
Archerfield Airport 23.5 +1.8 32.5 17 Aug 8.8 +0.4 3.4 25 Jul 97.0 152.4 average 64%
Beaudesert Drumley Street 23.1   31.6 17 Aug 6.7   -0.7 9 Aug 93.6 110.0 low 85%
Beerburrum Forest Station 23.6 +1.5 32.7 17 Aug 9.9 0.0 4.4 21 Aug 113.2 186.3 average 61%
Brisbane 23.5 +1.2 32.3 17 Aug 11.4 +0.5 5.9 24 Jul 132.2 133.0 average 99%
Brisbane Aero 22.4 +1.1 29.3 17 Aug 10.5 +0.6 4.3 24 Jul 125.4 140.7 average 89%
Cape Moreton Lighthouse 21.0 +1.5 25.0 18 Aug 15.4 +1.6 11.1 20 Aug 166.2 325.8 low 51%
Logan City Water Treatment Plant 23.1 +1.2 32.9 17 Aug 10.1 +0.6 5.1 24 Jul 137.7 155.6 average 88%
Point Lookout 23.0 +1.4 26.9 12 Aug 14.9 +0.8 10.7 21 Aug 332.4 339.2 average 98%
Redcliffe 22.4 +1.2 31.0 17 Aug 12.0 +0.3 6.9 24 Jul 172.8 153.3 average 113%
Redland (Alexandra Hills) 22.0   26.8 17 Aug 11.0   5.3 10 Aug 198.0
University of Queensland Gatton 23.9 +2.5 33.3 16 Aug 6.1 -0.8 -1.0 26 Jul 45.0 105.3 low 43%
Note: From 2017, information about Macquarie Island can be found in the climate summary for the Remote Islands and Antarctica

Notes

The Seasonal climate summary, generally published on the first working day of each month, lists the main features of the weather in Greater Brisbane using the most timely and accurate information available on the date of publication; it will generally not be updated. More extensive discussion of significant weather events, along with later information and data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review.

In September 2017 this summary was broadened to include data from observing sites in or near the Greater Brisbane “Greater Capital City Statistical Area” (GCCSA). The Australian Bureau of Statistics designed the GCCSAs to “include the population within the urban area of the city, as well as people who regularly socialise, shop or work within the city, and live in small towns and rural areas surrounding the city. It is important to note that GCCSAs do not define the built up edge of the city. They provide a stable definition for these cities and are designed for the output of a range of social and economic survey data.

This statement has been prepared based on information available at 11 am on Friday 1 September 2017. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

In some situations, some or all of the rainfall is in the form of hail or snow. In these cases the totals given are for the water equivalent: the depth of liquid water that results from melting any frozen precipitation. There can be significant 'undercatch' of snow in strong winds, meaning the true precipitation can be higher than that reported.

Averages for individual sites 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 10 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 decile ranking (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.

Where temperature area averages are mentioned, they are derived from the ACORN-SAT dataset.

Further information

Media
(03) 9669 4057
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