Greater Brisbane in May 2018: Dry end to autumn

Rainfall was below to well below average for May in the Greater Brisbane area. Daytime temperatures were warmer than average at all Brisbane locations. Overnight temperatures were slightly warmer than average, except for inland locations, where nights were cooler than usual.

Dry across Greater Brisbane

  • Rainfall was generally below to well below average across the Greater Brisbane area for May
  • Some locations reporting their driest May in several decades
  • Showers produced moderate falls in the Greater Brisbane area on the 8th and 9th, due to a surface and upper level trough
  • Thunderstorms skirted the coastline in a south-southeasterly airstream in the middle of the month, producing moderate falls at exposed coastal sites on the 17th and 18th
  • The wettest day occurred at Cape Moreton, with 75.8 mm of rain falling in the 24 hours to 9am on the 18th
  • Moist onshore airflow produced showers across Greater Brisbane during the last week of May

Warmer than usual days

  • Daytime temperatures were warmer than average at all Greater Brisbane locations for May
  • Warmer than usual days persisted during most of the first half of the month
  • The hottest day occurred at Gatton on the 4th, with a maximum temperature of 29.9 °C
  • Overnight temperatures were slightly warmer than average, except for inland locations, where overnight temperatures were cooler than usual
  • Cool nights across Greater Brisbane occurred from around the 12th, and persisted for nearly two weeks
  • The coldest nights occurred on the 21st or 22nd at most locations, with a cold outburst at the end of the month

Brisbane

  • Total rainfall for Brisbane was 26.8 mm, which is 42% of the long-term average of 64.1 mm
  • The mean daily maximum temperature for Brisbane was 24.8 °C, which is 0.3 °C above the long-term average of 24.5 °C. The warmest day was 27.9 °C on the 10th, and the coolest day was on the 31st when the temperature reached 22.0 °C
  • The mean daily minimum temperature for Brisbane was 13.9 °C, which is 0.2 °C above the long-term average of 13.7 °C. The coldest morning was 8.3 °C on the 31st, and the warmest morning was on the 8th when the minimum temperature was 18.5 °C

Fog and frost

  • Widespread fog affected Brisbane city on the 30th, with patches of shallow fog reported at the Brisbane Airport
  • Frost was observed about Ipswich on the 22nd, with the overnight temperature at Amberley dropping to 1.2 °C

Further information

Media
(03) 9669 4057
Enquiries

Extremes in May 2018
Hottest day 29.9 °C at University of Queensland Gatton on the 4th
Warmest days on average 25.5 °C at Beaudesert Drumley Street and at University of Queensland Gatton
Coolest days on average 22.5 °C at Cape Moreton Lighthouse
Coldest day 19.1 °C at Cape Moreton Lighthouse on the 31st
Coldest night 1.2 °C at Amberley AMO on the 22nd
Coolest nights on average 8.5 °C at Amberley AMO
Warmest nights on average 17.1 °C at Cape Moreton Lighthouse
Warmest night 22.0 °C at Point Lookout on the 6th
Warmest on average overall 19.8 °C at Cape Moreton Lighthouse
Coolest on average overall 17.0 °C at Amberley AMO
Wettest overall 225.2 mm at Caloundra Airport
Driest overall 3.0 mm at Beaudesert Drumley Street
Wettest day 75.8 mm at Point Lookout on the 18th
Strongest wind gust 76 km/h at Cape Moreton Lighthouse on the 5th and on the 26th

Lowest May total rainfall for at least 20 years
Observed
(mm)
Most recent
lower
Average for
May
Canungra Finch Road 7.2 6.1 in 1966 84.1
Greenbank Thompson Road 13.0 12.6 in 1988 79.3

* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported




Summary statistics for May 2018
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
May
2018
Diff
from
average
Highest for
May
2018
Mean for
May
2018
Diff
from
average
Lowest for
May
2018
Total for
May
2018
Average
for
May
Rank of
May
2018
Fraction of
May
average
Amberley AMO 25.4 +1.3 28.8 5th 8.5 -1.5 1.2 22nd 17.2 52.8 low 33%
Archerfield Airport 25.0 +1.0 28.2 4th 11.4 -0.5 6.4 22nd 19.6 72.9 low 27%
Beaudesert Drumley Street 25.5 +1.4 29.6 4th 9.2 -0.2 2.1 31st 3.0 54.6 v low 5%
Beerburrum Forest Station 24.2 +0.1 27.7 4th 12.8 +0.2 7.9 12th 45.6 122.2 low 37%
Brisbane 24.8 +0.3 27.9 10th 13.9 +0.2 8.3 31st 26.8 64.1 low 42%
Brisbane Aero 23.8 +0.2 26.6 9th 13.1 +0.1 7.2 31st 36.6 101.2 low 36%
Cape Moreton Lighthouse 22.5 +0.6 26.0 3rd 17.1 +0.6 12.0 31st 128.0 167.2 average 77%
Logan City Water Treatment Plant 24.7 +0.7 28.2 10th 12.6 0.0 7.4 21st 24.1 101.1 low 24%
Point Lookout 24.1 +0.2 27.2 3rd 16.9 +0.2 11.1 12th 169.7 148.1 average 115%
Redcliffe 23.8 +0.4 27.4 10th 14.5 +0.2 10.1 31st 50.4 69.7 average 72%
Redland (Alexandra Hills) 23.6   26.0 10th 13.4   8.3 31st 51.6
University of Queensland Gatton 25.5 +1.7 29.9 4th 9.7 -0.5 3.4 19th 25.8 45.4 average 57%

Daily maximum temperatures for May 2018
12345678910111213141516171819202122232425262728293031
Amberley AMO25.825.927.428.328.826.424.823.527.628.423.422.924.825.225.625.024.325.224.826.325.026.026.124.224.923.324.123.724.427.123.1
Archerfield Airport25.826.326.828.227.726.825.223.527.027.422.622.424.224.224.824.524.424.824.925.224.825.225.124.024.523.523.923.224.126.222.3
Beaudesert Drumley Street26.026.928.429.627.725.525.925.926.929.223.222.424.924.924.524.223.626.125.626.926.026.025.725.124.321.824.924.026.026.523.3
Beerburrum Forest Station24.825.226.527.725.824.524.222.526.927.623.722.824.124.524.323.422.523.624.125.123.825.523.824.022.922.921.222.022.525.821.4
Brisbane25.326.026.727.627.225.824.222.527.227.922.922.324.425.025.124.423.625.425.325.325.525.024.224.623.823.122.723.526.122.0
Brisbane Aero24.925.125.325.826.525.224.522.226.626.222.622.123.423.823.023.222.522.723.325.423.524.624.323.323.822.921.322.022.623.921.7
Cape Moreton Lighthouse23.524.926.024.924.723.623.922.624.125.121.720.521.421.521.021.220.021.722.522.621.621.121.922.123.022.322.122.221.822.719.1
Logan City Water Treatment Plant24.625.725.927.525.725.225.026.528.223.523.524.224.024.325.523.925.924.124.923.923.923.721.723.123.126.322.8
Point Lookout24.725.927.226.825.825.426.222.425.026.322.323.323.323.721.123.223.424.523.823.323.823.223.024.623.820.7
Redcliffe24.325.226.126.425.825.224.422.826.327.422.822.123.523.623.423.022.322.623.125.323.624.323.923.322.922.821.422.122.324.521.2
Redland (Alexandra Hills)24.625.125.725.225.924.924.721.825.826.022.021.522.623.223.623.122.822.923.324.224.123.724.023.422.222.621.922.524.221.0
University of Queensland Gatton26.925.227.729.929.327.125.022.327.928.722.224.425.125.525.125.125.025.125.625.925.326.124.525.223.523.724.724.627.122.4
Values are the maximum temperature, usually in the 24 hours from 9 am on the day indicated,
and typically occurred in the afternoon of that day.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily minimum temperatures for May 2018
12345678910111213141516171819202122232425262728293031
Amberley AMO8.912.511.611.913.010.811.517.415.49.012.27.05.15.37.05.25.96.54.34.71.91.23.66.78.49.211.911.314.69.31.4
Archerfield Airport11.514.612.714.515.812.213.218.317.413.513.99.110.57.811.49.08.810.68.09.27.16.47.59.910.411.612.713.015.510.18.4
Beaudesert Drumley Street11.712.412.312.214.012.313.116.717.310.58.04.63.95.710.54.88.48.06.46.42.33.84.67.19.58.812.510.414.19.42.1
Beerburrum Forest Station13.215.314.415.116.714.215.217.717.413.216.37.911.59.010.69.911.413.511.010.610.410.28.312.613.613.812.914.114.912.38.4
Brisbane15.117.216.016.518.315.716.718.517.914.314.912.310.711.213.411.512.813.311.511.69.710.811.313.114.215.114.314.816.213.48.3
Brisbane Aero14.616.314.916.216.914.816.418.217.513.815.511.39.610.111.911.111.913.810.610.57.97.810.913.213.413.313.714.115.612.17.2
Cape Moreton Lighthouse17.218.420.819.719.819.421.118.518.619.618.812.614.216.215.916.516.616.216.415.913.814.916.816.719.717.316.417.416.416.812.0
Logan City Water Treatment Plant12.915.614.815.917.414.416.017.416.913.114.28.49.59.612.710.910.510.57.48.69.811.812.514.014.314.212.47.4
Point Lookout17.719.220.219.519.922.020.419.919.118.214.111.113.816.417.815.216.615.811.613.616.116.419.817.716.311.4
Redcliffe15.317.016.617.118.216.518.218.317.815.016.711.512.211.513.112.914.015.112.012.110.511.412.314.215.015.915.215.315.713.110.1
Redland (Alexandra Hills)13.716.615.016.217.514.816.618.016.914.916.79.511.111.011.110.511.311.911.112.29.810.911.712.413.915.314.414.015.213.18.3
University of Queensland Gatton9.411.811.411.314.210.712.716.615.38.812.39.48.66.48.87.36.27.93.44.77.49.35.48.010.410.711.69.813.89.37.9
Values are the minimum temperature, usually in the 24 hours to 9 am on the day indicated,
and typically occurred that morning.
Temperatures coloured according to their difference
from the long-term average for the period
-10.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 +8.0 +9.0 +10.0 °C Grey outline marks highest
and lowest for the period

Daily rainfall for May 2018
12345678910111213141516171819202122232425262728293031
Alderley - - - - - - - 10.6 13.0 - - - - - - - - - - - - - - - - - 1.4 2.0 7.2 - -
Amberley AMO - - - - - - - 6.2 9.2 - 0.2 - - - - - - - - - - - - - - - 0.2 0.2 1.2 - -
Archerfield Airport - - - - - - - 7.2 8.8 - - - - - - - - - - - - - - - - - 0.4 0.8 2.4 - -
Beaudesert Drumley Street - - - - - - - 0.2 1.2 - - - - - - - - - - - - - - - - - - - 1.0 0.6 -
Beerburrum Forest Station - 0.4 - 0.2 - - - 25.6 1.6 0.2 0.2 - - - - - - 0.8 - 0.2 0.2 - - - 0.2 1.6 1.0 1.8 11.6 - -
Blackbutt Post Office - 0.2 6.8 - - - - 19.8 13.2 - - - - - - - - - - - - - - - - - - 2.0 2.4 0.2
Brisbane - - - - - - - 8.2 9.2 - - - - - - - - - - - -
- - - - 3.4 1.6 4.2 0.2 -
Brisbane Aero - 0.4 0.2 - - - - 17.6 6.4 - - - - - - - - - - - - - - - - - 1.2 3.4 7.2 - 0.2
Brisbane Botanic Gardens Mt Coot-Tha - - - - - - - 8.8 11.0 - - - - - - - - - - - - - - - - - 5.0 1.2


Caloundra Airport 0.5 0.9 - - - - - 64.0 5.0 0.2 - - - - - - 0.4 59.0 - - - - - 0.2 - 30.0 10.4 14.2 40.0 - 0.4
Canungra Finch Road






6.0

















1.2



Capalaba Water Treat - - - - - - - 18.4 17.4 0.2 - - - - - - - - - - - - - - - 0.4 8.6 3.0


Cape Moreton Lighthouse 6.0 0.6 - 0.2 - 0.6 - 38.8 5.4 - - - - - - - 29.0 29.2 - - - - - 2.6 0.2 7.8 2.6 2.0 2.8 0.2 -
Carneys Creek The Ranch - - - - - 2.0 - 1.6






















Clontarf - 0.6 0.2 - - - - 18.2 4.4 - - - - - - - - 4.8 - - - - - - - 1.6 0.2 5.4 14.2

Coomera Foxwell Road






11.0 9.0

















15.0

Corbould Pk Racecourse 1.0 - - - - - 58.0 17.0 - - - - - - - - 42.0

- - - 18.0 20.0 26.0 -
Esk Post Office - 0.4 1.4 - - 5.0 - 9.8 4.2 - - - - - - - - - - - - - - - - - - 1.2


Fernvale - Burns St - - - - - - - 9.0 5.8 - - - - - - - - - - - - - - - - - - 1.0 0.6 - 1.0
Fort Lytton 4.0 - 2.0 -


























Godwin Beach - 2.2 0.2 - - - - 34.6 15.2 0.2 0.2 - - - - - - 0.8 - - - - - - - 0.8 4.2 7.6 20.0 0.2 -
Greenbank Thompson Road - - - - - - - 11.4 - - - - - - - - - - - - - - - - - 1.6



Harrisville Mary Street - - - - - - - 0.8 4.4 - - - - - - - - - - - - - - - - - - - 0.4 0.2 -
Highvale - - - - - - - 8.0 13.8 - - - - - - - - - - - - - - - - - 3.4 2.8 1.8 3.0
Karalee - - - - - - - 6.6 3.0 - - - - - - - - - - - - - - - - - 0.2 0.8 1.0

Landsborough - 0.6 1.4 - - - 0.2 44.6 10.8 - - - - - - - - 4.0 - - - - - - - 10.6 5.2 10.8 27.8 0.8
Lindfield - 2.0 - - - - - 25.2 2.8 - - - - - - - - - - - - - - - - 4.6 6.4 - 0.2
Logan City Water Treatment Plant 0.6 - - - - - 0.4 12.1 3.6 - - - - - - - - - - - - - - - - 1.4 0.8 1.0 4.2 -
Lowood Don St - - - - - - - 8.4 1.5 - - - - - - - - - - - - - - - - - - 0.4 0.9 0.1 1.0
Manly Railway Station 0.4 - - - - - - - - 19.0 - - - - - - - - - - - - - - - - - 6.8 7.4

Maroon Dam - - - - - - - 1.0 4.2 - - - - - - - - - - - - - - - - - - - - 0.6
Moogerah Dam - - - - - - - 0.8 7.6 - - - - - - - - - - - - - - - - 0.4




Mt Alford - - - - - - - 0.2 6.0





















Mt Tamborine Fern St - - 1.6 - - - 0.4 7.2 - 2.4 - - - - - - - - - - - - - - - - 2.0 0.8 1.0

Mt Tarampa - - - - - - - 6.6 7.4





















Ormiston College - 1.0 - - - - - 13.0 13.0 - - - - - - - - - - - - - - - - - 21.0

Peachester - - - - - - - 39.0 8.0 - - - - - - - - - - - - - - - - 6.0 3.0 3.0 20.0

Point Lookout 20.0 2.0 - - - - - 6.6 50.0 - - - - - - - 0.2 75.8 0.1 - - - - 6.6 - 8.2 0.2 -
Redcliffe - - - - - - - 24.2 3.4 - - - - - - - - 0.2 - - - - - - - - 0.2 8.8 13.6 - -
Redland (Alexandra Hills) - 0.2 - - - - - 18.6 13.8 0.2 - - - - - - - - - - -
- - - - 7.6 3.6 7.2 0.2 0.2
Regents Park - - - - - - 0.6 7.0 4.0 0.2 - - - - - - - - - - - - - - - 0.2 2.2 - 1.0 0.6
Rocky Point Sugar Mill - - - - 32.2 6.0 - - - - - - - - - - - - - - - - 6.4 10.8 0.2
Somerset Dam - - 1.0 2.2 - - - 9.6 6.2 - - - - - - - - - - - - - - - - 1.0 0.4 3.2 3.0 - -
Toogoolawah Post Office - 1.6 - - - - - 12.2 2.0 - - - - - - - - - - - - - - - - - - 2.0 1.6

University of Queensland Gatton - - - - - - - 5.2 17.6 0.2 - - - - - - - - - - - - - - - - 0.2 0.2 - 2.4 -
Wamuran - - - - - - - 21.9 2.5 - - - - - - - - 0.4 - - - - - - - 1.1 2.7 3.5 11.8

Wivenhoe Dam - - - - - - - 7.0 3.0 - - - - - - - - - - - - - - - - - - 1.6 0.8

Woodford Stanmore - - 1.2 - - - - 31.6 5.6 - - - - - - - - 1.2 - - - - - - - 1.2 0.6 2.4 6.0 0.4
Most values are the precipitation in the 24 hours to 9 am on the day indicated. Days marked with → are part of a longer accumulation, which is shown on the final day.
Values over 100 mm have been rounded to the nearest whole millimetre.
Days marked with - have a rainfall report of zero; days left blank have no rainfall report (which often indicates no rain fell).
Rainfalls coloured
according to the amount
0 1.0 5.0 10.0 15.0 25.0 50.0 100 150 200 300 400 600 millimetres

Notes

The Monthly 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 10 am on Friday 1 June 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