Greater Brisbane in summer 2017-18: warm and stormy

Greater Brisbane, like most of Queensland, had a warm summer. Rainfall was near or above average across the city, with showers and storms during December and February.

Stormy end to summer

  • Summer rainfall totals exceeded 400 mm across much of Greater Brisbane. Brisbane City received 408.8 mm, just below the long-term average of 440 mm
  • Thunderstorms and showers throughout December resulted in a wetter than average start to the season
  • January was relatively dry, with most locations recording less than 30 mm for the month
  • February was very wet, as showers and thunderstorms produced moderate to locally heavy falls at the start and end of the month

Warmer than usual summer days in Brisbane

  • Brisbane's mean maximum temperature was 30.8 °C, and nearly a degree above the long-term average. It was the equal fourth-warmest on record for this current site, and the sixth-warmest on record at any Brisbane City site
  • The warmest day was 37.5 °C on 14 January 2018, during a run of very hot days and warm nights from the 10th to the 16th
  • Brisbane's mean minimum temperature was 21.1°C, equal to the long-term average
  • Some sites around Brisbane had their highest summer temperature on record

Brisbane

  • Total rainfall for Brisbane was 409.0 mm, which is near the long-term average of 440.0 mm
  • The mean daily maximum temperature for Brisbane was 30.8 °C, which is 0.9 °C above the long-term average of 29.9 °C. The warmest day was 37.5 °C on 14 January, and the coolest day was on 2 February when the temperature reached 21.7 °C
  • The mean daily minimum temperature for Brisbane was 21.2 °C, equal to the long-term average.. The coldest morning was 17.4 °C on 7 December, and the warmest morning was on 16 February when the minimum temperature was 26.6 °C

Severe thunderstorms

  • Severe thunderstorms affected southeast Queensland on 8 December, with trees blown down around Loganlea and Beaudesert
  • More severe thunderstorms tracked across southeastern Queensland on 9 December, and produced heavy rainfall
  • On 2 January, severe thunderstorms produced heavy rainfall that led to flash flooding around Beaudesert
  • Golf ball sized hail and 113 km/h wind gust reported at Oakey on the afternoon of 13 February, and heavy rainfall at Macleans Bridge, near Jimboomba, with 33 mm in 15 minutes
  • Golf ball sized hail was reported at Mount Sylvia (south of Gatton) on 15 February, and 61 mm of rain fell in under 30 minutes at Mt Stradbroke (near Marburg)

Further information

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Extremes in summer 2017-18
Hottest day 41.9 °C at University of Queensland Gatton on 13 Jan 2018
Warmest days on average 33.0 °C at University of Queensland Gatton
Coolest days on average 29.1 °C at Redcliffe
Coldest day 19.6 °C at University of Queensland Gatton on 2 Feb 2018
Coldest night 11.6 °C at Beaudesert Drumley Street on 20 Jan 2018
Coolest nights on average 17.8 °C at University of Queensland Gatton
Warmest nights on average 21.7 °C at Redcliffe
Warmest night 26.6 °C at Brisbane on 16 Feb 2018
Warmest on average overall 25.6 °C at Archerfield Airport
Coolest on average overall 24.7 °C at Redland (Alexandra Hills)
Wettest overall 641.6 mm at Landsborough
Wettest day 171.0 mm at Mt Tamborine Fern St on 24 Feb 2018
Strongest wind gust 111 km/h at Inner Reciprocal Marker on 11 Feb 2018

Record highest summer temperature

New record
(°C)
Old
record
Years of
record
Average for
summer
Point Lookout 39.8 on 14 Jan 2018 36.5 on 25 Dec 2001 22 28.9



Summary statistics for summer 2017-18

Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
summer
2017-18
Diff
from
average
Highest for
summer
2017-18
Mean for
summer
2017-18
Diff
from
average
Lowest for
summer
2017-18
Total for
summer
2017-18
Average
for
summer
Rank of
summer
2017-18
Fraction of
summer
average
Amberley AMO 31.7 +0.9 39.7 13 Jan 2018 18.7 -0.5 12.5 19 Jan 2018 434.0 359.4 high 121%
Archerfield Airport 31.2 +1.3 37.5 14 Jan 2018 20.0 +0.2 14.6 15 Jan 2018 421.6 413.1 average 102%
Beaudesert Drumley Street 31.7 +1.1 39.2 13 Jan 2018 18.5 -0.3 11.6 20 Jan 2018 544.8 385.2 v high 141%
Beerburrum Forest Station 30.4 +0.5 37.1 13 Jan 2018 19.1 -0.3 13.5 6 Dec 2017 625.6 568.4 average 110%
Brisbane 30.8 +0.9 37.5 14 Jan 2018 21.2 +0.1 17.4 7 Dec 2017 409.0 438.1 average 93%
Brisbane Aero 29.4 +0.7 38.1 14 Jan 2018 20.9 0.0 15.9 16 Jan 2018 327.4 389.0 average 84%
Logan City Water Treatment Plant 30.1 +0.7 37.0 14 Jan 2018 20.2 +0.1 15.2 19 Jan 2018 516.0 398.2 average 130%
Redcliffe 29.1 +0.4 37.5 14 Jan 2018 21.7 0.0 17.0 6 Dec 2017 395.2 371.3 average 106%
Redland (Alexandra Hills) 29.2   37.1 14 Jan 2018 20.2   14.9 19 Jan 2018 425.8


University of Queensland Gatton 33.0 +1.8 41.9 13 Jan 2018 17.8 -0.9 11.7 7 Dec 2017 388.4 310.5 high 125%

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 9 am on Thursday 1 March 2018. 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
Enquiries