Melbourne in spring 2015: warm and dry

Spring rainfall in Melbourne was very much below average across most of the city. Spring daytime temperatures were warmer than average across Melbourne and minimum temperatures were generally above average.

  • Below-average rainfall
  • Warm days
  • Generally warmer than average nights
  • Strongest wind gust was 117 km/h at St Kilda Harbour in November

Spring rainfall was below average across Melbourne, and very much below average in some areas. Ferny Creek was the wettest station in the greater Melbourne area with a spring total of 232.6 mm. Ferny Creek also had greater Melbourne's wettest day this spring, with 26.8 mm reported on 15 September. Most sites had around half their spring average rainfall, and Coldstream had its lowest total spring rainfall on record. There were only 14 days when Melbourne (Olympic Park) recorded 1 mm or more of rainfall this spring, which was the lowest number ever for the city centre (the previous record was 15 days in both 1938 and 2006 at the Melbourne Regional Office).

All stations across the greater Melbourne area recorded mean maximum temperatures that were warmer than their spring average. Numerous sites had their highest spring mean temperature on record and their highest spring mean daily maximum temperature on record.

Minimum temperatures were closer to the spring average, but still most Melbourne sites recorded above-average mean minimum temperatures; Cerberus and Coldstream were the only sites below their spring mean minimum temperatures. A cold outbreak at the end of spring saw Coldstream report a late-season low temperature record on 27 November of 0.1 °C (the previous latest minimum temperature this low at Coldstream was on 16 November, 1994).

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Extremes in spring 2015
Hottest day 36.6 °C at Avalon Airport on 5 Oct
Warmest days on average 22.2 °C at Avalon Airport
22.2 °C at Viewbank
Coolest days on average 18.1 °C at Ferny Creek
Coldest day 8.1 °C at Ferny Creek on 8 Sep
Coldest night -0.6 °C at Coldstream on 1 Sep
Coolest nights on average 6.9 °C at Coldstream
Warmest nights on average 11.5 °C at Melbourne (Olympic Park)
Warmest night 20.7 °C at Essendon Airport on 6 Oct
Warmest on average overall 16.5 °C at Melbourne (Olympic Park)
Coolest on average overall 13.5 °C at Ferny Creek
Wettest overall 232.6 mm at Ferny Creek
Driest overall 71.6 mm at Avalon Airport
Wettest day 26.8 mm at Ferny Creek on 15 Sep
Strongest wind gust 117 km/h at St Kilda Harbour - RMYS on 30 Nov

Record lowest spring total rainfall
New record
(mm)
Old
record
Years of
record
Average for
spring
Coldstream 96.4 118.8 in 2007 21 205.6



Record highest spring mean daily maximum temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Laverton RAAF 21.7 21.3 in 2007 71 19.3
Scoresby Research Institute 21.7 21.0 in 2014 55 19.0
Essendon Airport 22.0 21.5 in 2009 45 19.3
Melbourne Airport 22.1 21.4 in 2014 45 19.3
Moorabbin Airport 21.3 20.8 in 2014 44 19.2
Bundoora (Latrobe University) 22.1 22.0 in 2014 31 19.7
Cerberus 20.2 19.6 in 2011 23 18.4
Cranbourne Botanic Gardens 20.6 20.1 in 2009 23 18.8
Avalon Airport 22.2 21.9 in 2014 20 20.0
Coldstream 21.9 21.2 in 2006 20 19.8



Record highest spring mean temperature
New record
(°C)
Old
record
Years of
record
Average for
spring
Laverton RAAF 15.8 15.6 in 2009 71 13.8
Scoresby Research Institute 15.6 15.3 in 2009 55 14.0
Essendon Airport 16.1 15.9 in 2009 45 13.8
Melbourne Airport 15.8 15.6 in 2009 45 14.0
Moorabbin Airport 15.8 15.6 in 2009 44 14.3
Bundoora (Latrobe University) 15.9 15.7 in 2009 31 14.3
Cranbourne Botanic Gardens 14.9 14.8 in 2011 23 13.9
Avalon Airport 15.6 15.2 in 2009 20 14.2



Summary statistics for spring 2015
Maximum temperatures
(°C)
Minimum temperatures
(°C)
Rainfall
(millimetres)
Mean for
spring
2015
Diff
from
average
Highest for
spring
2015
Mean for
spring
2015
Diff
from
average
Lowest for
spring
2015
Total for
spring
2015
Average
for
spring
Rank of
spring
2015
Fraction of
spring
average
Avalon Airport 22.2 +2.2 36.6 5 Oct 9.1 +0.7 0.1 1 Sep 71.6 144.0 low 50%
Bundoora (Latrobe University) 22.1 +2.4 35.8 6 Oct 9.6 +0.7 2.6 1 Oct
Cerberus 20.2 +1.8 33.4 15 Oct 8.8 -0.2 1.4 1 Oct 96.8 187.9 v low 52%
Coldstream 21.9 +2.1 34.0 6 Oct 6.9 -0.1 -0.6 1 Sep 96.4 205.6 lowest 47%
Cranbourne Botanic Gardens 20.6 +1.8 33.0 6 Oct 9.2 +0.2 2.7 24 Sep 106.1 238.3 v low 45%
Essendon Airport 22.0 +2.7 36.3 6 Oct 10.2 +1.9 2.6 1 Oct 94.8 169.3 low 56%
Ferny Creek 18.1   30.8 6 Oct 8.9   2.1 1 Sep 232.6
Laverton RAAF 21.7 +2.4 36.4 6 Oct 9.8 +1.4 0.6 1 Sep 83.8 157.4 v low 53%
Melbourne (Olympic Park) 21.4   35.8 6 Oct 11.5   5.1 1 Sep 85.8
Melbourne Airport 22.1 +2.8 35.9 6 Oct 9.5 +0.9 1.2 1 Sep 96.0 163.2 low 59%
Moorabbin Airport 21.3 +2.1 34.8 15 Oct 10.3 +0.9 2.9 24 Sep 104.0 197.0 v low 53%
Scoresby Research Institute 21.7 +2.7 35.0 6 Oct 9.4 +0.5 1.8 1 Sep 116.8 247.9 v low 47%
Viewbank 22.2 +1.7 35.3 6 Oct 9.8 +0.5 2.7 11 Sep 88.6 188.7 v low 47%

Notes

The Seasonal climate summary lists the main features of the weather in Melbourne 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.

A climate summary is generally published on the first working day of each month.

This statement has been prepared based on information available at 10 am on Tuesday 1 December 2015. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

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.

The ACORN-SAT dataset is used for temperature area averages.

Further information

Media
(03) 9669 4057
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Climate

Service notice

Network problems on 8 January disrupted processing of observations, affecting some climate information. Missing data are being retrieved and will be processed into our systems over coming weeks.