Melbourne Metropolitan Area and Environs in May 2010: Warm days

Maximum temperatures were above normal across the Melbourne area, whilst minimums tended to be very close to normal in most parts. Rainfall was average to below average across the area.

Rainfall

Rainfall was close to average across most of the region, however rainfall totals in central Melbourne and northeastern suburbs tended to be below average.

The total rainfall recorded at the Melbourne Regional Office for May 2010 is 23.0 mm, which is 32.7 mm less than the long term average of 55.7 mm.

The wettest overall was 93.0 mm at Ferny Creek (Dunns Hill), whilst the wettest single day was 15.0 mm at Ferny Creek (Dunns Hill) on the 13th.

Maximum temperature

Maximum temperatures were above average across the region. The mean maximum temperature at Melbourne Regional Office was 18.2 C, which is 1.5 C above the long term average.

The hottest day was 25.7 C at Avalon Airport on the 4th, whilst the warmest days on average were 18.2 C at Melbourne Regional Office.

The coolest days on average were 12.6 C at Ferny Creek (Dunns Hill), whilst the coldest day was 8.3 C at Ferny Creek (Dunns Hill) on the 12th.

Minimum temperature

Minimum temperatures were generally very close to, or slightly above average across the region. The mean minimum temperature at Melbourne Regional Office was 9.8 C, which is 1.2 C above the long term average

The coldest night was -2.4 C at Coldstream on the 23rd, and the coolest nights on average were 5.5 C at Coldstream.

The warmest nights on average were 9.8 C at Melbourne Regional Office, and the warmest night was 14.5 C at Melbourne Regional Office on the 10th.

Wind

The strongest wind gusts were 83 km/h at Ferny Creek (Dunns Hill) on the 4th, and 83 km/h at Ferny Creek (Dunns Hill) on the 30th.

 

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Extremes in May 2010
Hottest day 25.7 C at Avalon Airport on the 4th
Warmest days on average 18.2 C at Melbourne Regional Office
Coolest days on average 12.6 C at Ferny Creek (Dunns Hill)
Coldest day 8.3 C at Ferny Creek (Dunns Hill) on the 12th
Coldest night -2.4 C at Coldstream on the 23rd
Coolest nights on average 5.5 C at Coldstream
Warmest nights on average 9.8 C at Melbourne Regional Office
Warmest night 14.5 C at Melbourne Regional Office on the 10th
Wettest overall 93.0 mm at Ferny Creek (Dunns Hill)
Wettest day 15.0 mm at Ferny Creek (Dunns Hill) on the 13th
Highest wind gust 83 km/h at Ferny Creek (Dunns Hill) on the 4th
83 km/h at Ferny Creek (Dunns Hill) on the 30th

 

Summary statistics for May 2010
Maximum temperatures
for May
(C)
Minimum temperatures
for May
(C)
Rainfall
for May
(millimetres)
Mean for
May
2010
Diff
from
average
Highest for
May
2010
Mean for
May
2010
Diff
from
average
Lowest for
May
2010
Total for
May
2010
Average
for
May
Rank of
May
2010
Fraction of
May
average
East Central (district 86)
Bundoora (Latrobe University) 17.1 +0.4 23.2 4th 8.1 +0.2 0.5 23rd 35.2 50.3 average 70%
Cerberus 16.9 +0.3 23.6 4th 8.2 -0.1 0.4 22nd 57.2 62.4 average 92%
Coldstream 17.1 +0.6 23.3 4th 5.5 +0.1 -2.4 23rd 52.6 60.5 average 87%
Cranbourne Botanic Gardens 16.7 +0.4 24.0 4th 8.4 -0.1 1.9 23rd 64.9 62.2 average 104%
Essendon Airport 17.5 +1.4 24.2 4th 7.8 +0.1 0.2 23rd 26.6 49.1 low 54%
Ferny Creek (Dunns Hill) 12.6 +0.2 18.7 4th 7.9 +0.3 4.0 5th 93.0 85.5 average 109%
Melbourne Airport 17.3 +0.7 23.8 4th 7.9 -0.4 2.1 23rd 30.8 40.0 average 77%
Melbourne Regional Office 18.2 +1.5 23.5 4th 9.8 +1.2 4.0 23rd 23.0 55.7 low 41%
Moorabbin Airport 17.1 +0.2 24.4 4th 8.2 -0.4 0.8 22nd 40.8 70.0 low 58%
Scoresby Research Institute 17.0 +0.8 22.8 4th 7.4 -0.8 0.4 23rd 56.4 88.6 low 64%
Viewbank (ARPANSA) 17.4 +0.2 23.9 4th 7.5 -0.2 0.4 22nd 45.0 49.3 average 91%
West Central (district 87)
Avalon Airport 17.6 +0.5 25.7 4th 7.7 +0.2 0.0 23rd 29.2 35.1 average 83%
Laverton RAAF 17.5 +0.7 25.3 4th 7.8 0.0 0.1 23rd 23.2 46.5 low 50%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Melbourne Metropolitan Area and Environs 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, usually published in the fourth week of the month.

This statement has been prepared based on information available at 10 am on Tuesday 1 June 2010. Some checks have been made on the data, but it is possible that results will change as new information becomes available.

Averages 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.

Further information

Media
(03) 9669 4057
Enquiries