Greater Melbourne in June 2018: mild days and cold nights

Rainfall in June 2018 was below average in the east and southeast and above average in the northwest of Greater Melbourne; elsewhere, it was close to average. Daytime temperatures were generally close to average, but night time temperatures were cooler than average.

Wet in the northwest

  • Rainfall across Greater Melbourne was above average in the northwest and below average in the east and southeast; elsewhere it was close to average
  • June rainfall totals ranged from 71% of average at Scoresby and Cranbourne to 171% of average at Melbourne Airport
  • The wettest period during the month was on the 17th and 18th, associated with a cold front and low pressure troughs that brought widespread rain to the Melbourne metropolitan area
  • During this event, most sites across Greater Melbourne had daily rainfall totals between 10 and 20 mm
  • Wallan and Wallan (Kilmore gap) had their highest June daily rainfall on record on the 18th; those same sites also had their highest total June rainfall since 1996

Mild days and cold nights

  • Daytime temperatures were generally close to average
  • The warmest day across Greater Melbourne was on the 6th; several sites (Coldstream, Essendon Airport, Melbourne (Olympic Park), Moorabbin Airport and Scoresby) reported 19.1 °C on this day
  • Persistent fog on the 28th kept daytime temperatures several degrees cooler than average, making it Melbourne's coldest June day since 2016 in the eastern suburbs and since 1993 at Laverton in the west
  • Clear skies and light winds under high pressure systems resulted in cooler than average June night time temperatures, with most sites reporting temperatures between 0.5 °C and 1.5 °C below the June average
  • The coldest nights were at Cerberus, where the mean minimum temperature was 1.6 °C below average for June
  • The lowest minimum temperature in Greater Melbourne, -1.1 °C, was recorded at Coldstream on the 1st

Melbourne (Olympic Park)

  • Total rainfall for Melbourne (Olympic Park) was 43.2 mm
  • The mean daily maximum temperature for Melbourne (Olympic Park) was 14.3 °C. The warmest day was 19.1 °C on the 6th, and the coolest day was on the 28th when the temperature reached 10.6 °C
  • The mean daily minimum temperature for Melbourne (Olympic Park) was 6.8 °C. The coldest morning was 3.0 °C on the 19th, and the warmest morning was on the 8th when the minimum temperature was 12.4 °C
  • Further information

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    Extremes in June 2018
    Hottest day 19.1 °C at Coldstream on the 6th
    19.1 °C at Essendon Airport on the 6th
    19.1 °C at Melbourne (Olympic Park) on the 6th
    19.1 °C at Moorabbin Airport on the 6th
    19.1 °C at Scoresby Research Institute on the 6th
    Warmest days on average 14.3 °C at Cerberus
    14.3 °C at Melbourne (Olympic Park)
    Coolest days on average 9.8 °C at Wallan (Kilmore Gap)
    Coldest day 6.7 °C at Wallan (Kilmore Gap) on the 18th
    Coldest night -1.1 °C at Coldstream on the 1st
    Coolest nights on average 2.9 °C at Coldstream
    Warmest nights on average 7.5 °C at Frankston AWS
    Warmest night 13.3 °C at Laverton RAAF on the 8th
    Warmest on average overall 10.5 °C at Frankston AWS
    10.5 °C at Melbourne (Olympic Park)
    Coolest on average overall 7.3 °C at Wallan (Kilmore Gap)
    Wettest overall 122.8 mm at Warburton (O'Shannassy Reservoir (Quarte
    Wettest day 47.4 mm at Wallan on the 18th
    Strongest wind gust 94 km/h at South Channel Island on the 15th
    94 km/h at South Channel Island on the 17th

    Record highest June daily rainfall
    New record
    (mm)
    Old
    record
    Years of
    record
    Wallan 47.4 on the 18th 46.2 on the 11th in 1989 39
    Wallan (Kilmore Gap) 47.0 on the 18th 36.4 on the 11th in 2005 25



    Highest June total rainfall for at least 20 years
    Observed
    (mm)
    Most recent
    higher
    Average for
    June
    Wallan (Kilmore Gap) 107.4 140.6 in 1996 67.2
    Wallan 93.2 117.8 in 1996* 63.5

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





    Summary statistics for June 2018
    Maximum temperatures
    (°C)
    Minimum temperatures
    (°C)
    Rainfall
    (millimetres)
    Mean for
    June
    2018
    Diff
    from
    average
    Highest for
    June
    2018
    Mean for
    June
    2018
    Diff
    from
    average
    Lowest for
    June
    2018
    Total for
    June
    2018
    Average
    for
    June
    Rank of
    June
    2018
    Fraction of
    June
    average
    Cerberus 14.3 +0.1 17.7 7th 5.2 -1.6 -1.0 28th 55.0 71.6 average 77%
    Coldstream 13.9 -0.1 19.1 6th 2.9 -1.1 -1.1 1st 77.8 65.2 average 119%
    Cranbourne Botanic Gardens 14.2 +0.3 17.7 11th 5.6 -1.1 2.5 16th 54.8 77.4 average 71%
    Essendon Airport 14.0 +0.3 19.1 6th 5.8 -0.2 1.6 2nd 47.4 40.1 average 118%
    Ferny Creek 10.3   15.0 6th 5.7   2.7 16th 90.0
    Frankston AWS 13.5 -0.1 17.8 7th 7.5 -1.2 2.6 28th
    Laverton RAAF 14.2 0.0 18.1 6th 5.4 -0.4 1.0 21st 36.4 38.4 average 95%
    Melbourne (Olympic Park) 14.3   19.1 6th 6.8   3.0 19th 43.2
    Melbourne Airport 13.9 +0.2 18.7 6th 5.3 -0.9 1.4 19th 69.0 40.3 v high 171%
    Moorabbin Airport 14.2 0.0 19.1 6th 5.6 -1.1 0.6 19th 41.4 55.7 average 74%
    Scoresby Research Institute 14.1 +0.5 19.1 6th 4.9 -1.4 -0.3 19th 49.4 69.3 low 71%
    Viewbank 14.2 -0.2 18.7 6th 5.3 -0.9 -0.1 19th 59.2 54.3 average 109%
    Wallan (Kilmore Gap) 9.8 -0.1 14.4 6th 4.8 -0.1 2.1 23rd 107.4 67.2 high 160%

    Daily maximum temperatures for June 2018
    123456789101112131415161718192021222324252627282930
    Bundoora (Latrobe University)14.214.816.218.517.016.815.213.613.913.911.813.714.515.714.812.314.211.510.2
    Cerberus15.114.414.915.615.517.017.713.815.615.516.815.814.414.412.212.514.713.313.913.913.913.812.913.013.713.312.910.513.713.6
    Coldstream15.214.411.114.716.419.116.912.716.017.317.115.913.113.212.612.113.212.613.214.715.313.910.412.310.714.013.910.112.512.9
    Cranbourne Botanic Gardens13.814.114.914.715.817.117.413.015.615.717.715.014.113.515.614.513.313.614.114.412.512.813.213.613.39.312.912.9
    Essendon Airport13.813.913.614.815.319.116.412.715.815.816.616.214.013.913.612.512.211.113.414.315.014.412.912.812.414.411.89.812.014.8
    Ferny Creek10.811.311.211.712.815.013.39.311.713.712.610.18.69.37.67.09.58.510.310.511.39.87.68.48.110.311.310.79.08.6
    Frankston AWS13.714.815.113.715.717.717.813.513.212.916.714.913.214.012.511.814.213.113.813.812.113.711.912.411.210.910.610.412.412.5
    Laverton RAAF14.213.913.915.015.018.117.314.216.414.716.616.514.815.113.713.313.011.813.115.614.915.214.012.713.312.510.79.412.314.3
    Melbourne (Olympic Park)13.313.613.814.415.019.117.813.615.615.317.616.614.114.514.013.113.112.014.515.315.115.012.813.112.614.111.210.612.514.2
    Melbourne Airport14.114.013.715.015.118.717.512.716.315.616.015.713.213.913.712.811.710.712.914.714.815.013.012.312.513.712.79.612.113.9
    Moorabbin Airport14.713.414.814.616.019.118.113.115.414.117.515.914.214.813.212.514.313.314.715.914.214.712.412.613.813.010.89.812.713.7
    Scoresby Research Institute14.414.913.615.416.319.117.011.916.516.516.515.313.313.612.411.513.613.014.415.114.914.610.712.311.714.513.410.312.813.7
    Viewbank14.614.712.015.116.818.717.612.616.217.016.215.913.113.613.412.412.812.713.614.715.714.811.612.212.013.811.312.013.5
    Wallan (Kilmore Gap)10.410.78.610.711.814.411.99.112.313.211.99.57.89.18.67.77.86.710.19.610.89.97.68.68.410.39.58.38.79.5
    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 June 2018
    123456789101112131415161718192021222324252627282930
    Bundoora (Latrobe University)1.20.77.22.87.112.21.77.57.78.85.01.02.03.30.85.17.42.53.95.3
    Cerberus0.81.82.42.34.24.27.011.58.74.15.08.48.48.37.47.57.710.41.32.0-0.32.75.68.17.67.81.8-1.01.98.2
    Coldstream-1.1-0.9-0.22.84.0-1.02.811.86.73.3-0.33.78.41.88.24.15.87.2-0.1-0.50.2-0.80.16.15.90.9-0.40.40.48.2
    Cranbourne Botanic Gardens2.82.95.75.36.63.37.911.010.04.83.17.08.37.82.55.98.22.62.83.13.57.57.68.43.43.63.56.6
    Essendon Airport2.81.64.24.88.22.67.111.710.13.22.77.47.77.49.05.87.18.52.93.93.11.65.66.77.18.14.83.25.18.7
    Ferny Creek4.94.75.16.57.27.110.68.18.16.57.67.75.35.04.82.73.35.74.16.04.84.64.75.05.34.55.45.56.04.8
    Frankston AWS5.65.27.87.38.06.09.012.811.46.36.49.711.19.57.48.08.510.35.25.55.45.76.38.99.09.04.52.63.69.2
    Laverton RAAF1.82.23.93.16.92.87.313.39.52.43.68.47.07.68.75.86.38.31.13.11.02.53.88.28.77.44.02.62.78.6
    Melbourne (Olympic Park)4.13.54.34.57.55.67.712.411.34.15.37.99.58.69.66.98.09.53.04.34.04.36.09.08.48.44.85.36.19.4
    Melbourne Airport1.82.33.44.98.33.26.711.78.23.04.29.36.26.19.04.66.17.51.42.52.63.04.96.95.47.32.52.84.77.9
    Moorabbin Airport2.42.42.93.97.12.66.312.310.12.71.66.49.78.29.07.37.79.80.62.12.74.76.77.89.57.71.82.41.98.8
    Scoresby Research Institute0.50.62.23.44.71.36.011.210.01.63.99.38.57.39.15.36.88.1-0.32.52.03.65.66.47.55.22.02.33.77.8
    Viewbank1.00.62.24.26.63.25.112.39.82.83.65.89.08.29.06.17.28.6-0.11.70.81.63.57.67.17.34.15.28.5
    Wallan (Kilmore Gap)4.14.74.55.25.86.58.27.77.75.94.96.34.94.74.12.92.75.32.53.54.34.62.13.63.95.25.43.85.34.6
    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 June 2018
    123456789101112131415161718192021222324252627282930
    Bonbeach (Carrum) - - - - - - - 3.0 2.0 - - 2.0 - 4.2 9.0 4.0 13.0 6.5 - - - - 1.8 - - - -
    Bullengarook East 0.2 - 0.2 2.0 4.0 0.2 - 1.4 - - 0.2 18.0 3.0 2.6 5.0 2.0 5.4 22.8 0.2 - 0.2 - 0.2 0.2 0.4 0.2 0.6
    Bundoora (Latrobe University) - - - - 0.6 0.2 - 0.4 5.4 0.4 5.4 0.6 26.6 0.2 - - - 0.8 - 0.1 0.2 -
    Burnside - - - - 2.0 - - 0.4 2.0 1.4 - 3.2 2.0 1.2 20.0 19.0 0.4 - - - - - - - - - - -
    Cape Schanck - - - 2.0 0.4 - - 0.8 - - - 4.6 1.0 5.6 - 1.6 17.0 2.6 - - - - - 7.6 4.6 6.2 - - - 1.6
    Cerberus - - - - 8.2 - - 0.4 1.0 0.2 0.2 5.2 1.6 3.6 9.0 3.2 14.6 - - - - - 0.2 2.0 1.4 2.4 0.2 - 0.2 1.4
    Coldstream 0.2 - 0.2 0.2 0.2 - - 0.2 13.0 0.2 - 4.0 0.8 6.6 2.4 8.2 29.6 8.8 0.2 - - - - 2.2 - 0.2 - 0.2 - 0.4
    Cranbourne Botanic Gardens - - - 0.2 0.3 0.2 - 2.6 4.2 0.1 - 2.4 0.4 3.6 15.8 20.8 0.2 - - - - - 0.8 0.4 0.6 0.2 - 2.0
    Essendon Airport - - - - 1.0 0.2 - - 2.6 0.2 - 1.2 0.2 4.4 1.4 0.8 12.2 21.6 0.6 - - - - 0.2 - - - - 0.4 0.4
    Ferny Creek - 0.2 - - 0.4 - - 2.8 14.0 0.2 - 4.0 4.0 7.2 1.8 5.4 35.4 4.2 - - - - - 5.2 0.4 1.2 - - - 3.6
    Greenvale Reservoir
    0.2 0.2
    0.2 0.2 - - 1.2 3.4
    3.8 1.0 4.0
    1.6 15.0 31.8
    - -

    0.4 - - -
    0.2 0.6
    Kinglake West - - - - 0.4 - - 1.0 2.6 - - 18.2 4.4 5.2 9.4 2.8 28.8 27.2 0.4 - - - - 5.8 - - - - 1.4
    Kinglake West (Wallaby Creek) 0.2 0.2 0.2

    0.2 - 1.0 1.6 0.4 0.2 17.8 3.8 5.0
    4.2 18.6 31.2 0.2 0.2 0.2

    2.8 0.2 - - 0.2 0.6 1.0
    Lancefield - - - - - - - 2.2 7.8 - - 19.4 2.0 6.2 10.8














    Laverton RAAF - - - - 2.0 0.2 - 0.2 0.2 0.2 - 0.6 - 0.2 2.8 1.8 16.6 10.2 0.8 - - - - - - 0.4 - 0.2 - -
    Main Ridge - - - 0.8 2.0 - - - - - 5.8 7.0 10.2 1.2 22.2 3.4 - - - - - - 9.0 - 4.2 - - 11.6
    Melbourne (Olympic Park) - 0.2 - - 1.6 0.4 0.2 0.6 3.0 - 0.2 0.4 - 5.6 4.6 2.2 15.6 7.2 0.4 0.2 - - - - - - 0.2 - 0.2 0.4
    Melbourne Airport - - 0.2 - 1.8 0.2 - - 1.8 0.2 0.2 2.0 - 4.6 0.2 0.6 19.4 35.2 2.0 - - - - 0.2 - - - - 0.2 0.2
    Mitcham

    0.2


    - 0.2 11.2 -
    0.8 0.6 6.6
    3.6 24.6 20.4 0.2 - -

    1.6 - - -
    - 0.6
    Moorabbin Airport - - 0.2 - 1.2 - - 1.6 1.0 - - 1.4 - 2.8 5.6 6.8 14.2 4.6 0.2 - - - - 0.4 - 0.4 - 0.2 - 0.8
    Newham (Cobaw) - - - - - - - 2.0 9.6 - - 18.0 3.8 9.4 6.0 3.8 3.0 14.2 - - - - - - - 1.2 1.8
    Oakleigh (Metropolitan Golf Club) 5.8 - - - - - - 1.8 - 14.6 - 3.2 8.6 25.6 - - - - - 1.6



    Preston Reservoir 0.2
    -
    0.4 0.2 0.2 0.2 3.8 - - 1.0 0.6 5.0
    0.8 12.6 15.4 0.2 - -

    1.2 - - -
    0.2 0.2
    Romsey 0.4 - 0.2 - 0.8 0.2






















    Rosebud (Country Club) - - - - - 1.2 - - - - - 4.2 0.4 5.0 10.2 19.0 11.0 - - - - - - 6.0 3.0 - - - 1.2
    Scoresby Research Institute 0.2 - 0.2 - 0.4 - - 2.6 8.0 0.2 0.2 1.8 1.2 4.0 1.0 4.6 18.0 2.2 0.2 - - - - 1.8 - 0.4 0.2 0.2 - 2.0
    Springvale (Sandown) - - - - 0.6 - - 2.6 - - - 1.8 1.4 7.0 2.4 6.8 18.4 2.8 - - - - - - - 1.8 - - - -
    Springvale Necropolis - - - - - - - - 4.0 - - 8.5 25.0 - - - - - - - 2.0 - - -
    Toorourrong Reservoir (Toorourrong)
    0.2 0.2
    0.2
    0.2 0.4 1.2 0.4 0.2 13.2 0.8 2.6
    1.4 12.0 23.2
    0.2 -

    2.2 - - - 0.2 0.2 0.6
    Viewbank 0.2 - - 0.2 0.2 0.2 - 0.2 5.6 0.2 - 1.2 - 7.6 0.6 1.4 21.2 19.0 - - - - - 1.0 - - - 0.2 - 0.2
    Wallan - - - - 1.0 - 0.2 - 0.8 - - 14.8 - 4.6 5.4 1.4 13.8 47.4 1.8 - - - - 1.4 - 0.4 - 0.2

    Wallan (Kilmore Gap) - 0.2 0.2 0.2 2.0 - 0.2 - 4.4 0.4 - 16.0 2.0 4.4 7.4 0.6 17.4 47.0 2.4 - - - - 1.0 - 0.2 - 0.2 0.2 1.0
    Warburton (O'Shannassy Reservoir (Quarte 0.2
    -


    0.2 - 26.6 1.4
    7.8 5.2 9.6
    13.8 16.4 31.8 0.2 - -

    1.0 - - -
    - 8.6
    Willowmavin (Avalon Station) - 0.2 0.2 - 0.4 0.4 - 1.0 8.8 0.2 0.4 22.6 4.4 7.4 9.6 3.0 11.6 20.2 0.6 - 0.2 0.2 0.2 1.0 - 0.2 - - - 1.6
    Woodend 0.2 - - - 2.4 - - 3.4 4.6 - - 15.4 3.6 5.0 7.6 6.8 5.2 20.4 0.2 - - - - 0.8 - - - - - 2.6
    Yan Yean 0.2 0.2 0.2
    0.2 0.2 - - 1.6
    - 3.0 2.6 4.4
    3.6 15.4 12.6 0.2 0.2 -

    2.0 0.2 - -
    0.4 0.2
    Yarra River @ Warrandyte - - - - - 0.2 - 0.4 7.8 - - 2.2 0.2 5.8 2.4 1.6 21.6 36.8 - 0.2 - - - 1.2 - - - 0.2 0.2 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 Melbourne 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 Melbourne “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 Monday 2 July 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

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