Monday, 3 May 2010 - Monthly Climate Summary for Melbourne Metropolitan Area and Environs - Product code IDCKGC1xx0
Melbourne Metropolitan Area and Environs in April 2010:
Exceptionally warm nights; mostly dry.
Details Records Summaries Important notes the top
Summary
Located in the Central District at the head of Port Phillip Bay, Melbourne is Victoria's State Capital. Here, overnight minimum temperatures were much warmer than those usually experienced and averaged a record-breaking 14.5°C (departure from normal 3.7°C; previous record 13.8°C in April 1968). Daytime maximum temperatures were also much warmer than those usually experienced and averaged 22.9°C (departure from normal 2.6°C). Total rainfall for the month was 19.6 mm, this being much less than that usually recorded (normal 57.1 mm, percentage of normal received 34%).
Selected Melbourne suburbs
In the suburb of Essendon, which is located some 15 kilometres to the northwest of the city centre, overnight minimum temperatures were much warmer than those usually experienced and averaged 12.6°C (departure from normal 2.8°C). Daytime maximum temperatures were much warmer than those usually experienced and averaged 22.5°C (departure from normal 2.5°C). Total rainfall for the month was 10.2 mm, this being much less than that usually recorded (normal 54.8 mm, percentage of normal received 19%).
The suburb of Laverton is located some 30 kilometres to the southwest of the city centre. Here, overnight minimum temperatures were much warmer than those usually experienced and averaged 12.5°C (departure from normal 2.7°C). Daytime maximum temperatures were much warmer than those usually experienced and averaged 22.5°C (departure from normal 2.3°C). Total rainfall for the month was 19.2 mm, this being much less than that usually recorded (normal 45.6 mm, percentage of normal received 42%).
In the suburb of Bundoora, which is located some 20 kilometres to the northeast of the city centre, overnight minimum temperatures were much warmer than those usually experienced and averaged 12.6°C (departure from normal 3°C). Daytime maximum temperatures were much warmer than those usually experienced and averaged 22.3°C (departure from normal 1.8°C). Total rainfall for the month was 29.1 mm, this being less than that usually recorded (normal 53.4 mm, percentage of normal received 54%).
In the suburb of Moorabbin, which is located some 20 kilometres to the southeast of the city centre, overnight minimum temperatures were much warmer than those usually experienced and averaged 12.9°C (departure from normal 2.5°C). Daytime maximum temperatures were much warmer than those usually experienced and averaged 21.9°C (departure from normal 1.8°C). Total rainfall for the month was 65.4 mm, this being close to that usually recorded (normal 62.6 mm, percentage of normal received 104%).
Some sites had their highest April mean daily minimum temperature on record.
Some sites had their highest April mean daily minimum temperature for at least 10 years.
Further information
- Media
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
| Record highest April mean daily minimum temperature | |||||
|---|---|---|---|---|---|
|
Mean daily minimum temperature for April 2010 (°C) |
Previous highest for April |
Years of record |
Average for April |
||
| Melbourne Regional Office | 14.5 | 13.8 | in 1968 | 154 | 10.8 |
| Laverton RAAF | 12.5 | 12.3 | in 1968 | 66 | 9.8 |
| Essendon Airport | 12.6 | 12.4 | in 1968 | 41 | 9.8 |
| Melbourne Airport | 12.4 | 11.6 | in 2005 | 39 | 10.1 |
| Moorabbin Airport | 12.9 | 12.8 | in 1990 | 38 | 10.4 |
| Bundoora (Latrobe University) | 12.6 | 11.8 | in 1990 | 27 | 9.6 |
| Cranbourne Botanic Gardens | 12.4 | 12.1 | in 1990 | 20 | 10.1 |
| Cerberus | 13.1 | 11.0 | in 2002 | 18 | 9.7 |
| Ferny Creek (Dunns Hill) | 11.4 | 11.1 | in 2005 | 18 | 9.3 |
| Avalon Airport | 11.9 | 10.4 | in 2003 | 15 | 9.3 |
| Coldstream | 10.3 | 7.9 | in 2005 | 15 | 6.3 |
| Viewbank (ARPANSA) | 12.6 | 11.1 | in 2005 | 10 | 9.8 |
| Highest April mean daily minimum temperature for at least 10 years | |||||
|---|---|---|---|---|---|
|
Mean daily minimum temperature for April 2010 (°C) |
Most recent higher for April |
Years since higher |
Average for April |
||
| Scoresby Research Institute | 12.2 | 12.3 | in 1985 | 23 | 10.0 |
Details Records Summaries Important notes the top
| Summary statistics for April 2010 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures for April (°C) |
Minimum temperatures for April (°C) |
Rainfall for April (millimetres) |
||||||||||
| Mean for April 2010 |
Diff from average |
Highest for April 2010 |
Mean for April 2010 |
Diff from average |
Lowest for April 2010 |
Total for April 2010 |
Average for April |
Rank of April 2010 |
Fraction of April average |
|||
| Avalon Airport | 22.2 | +2.1 | 31.5 | 20th | 11.9 | +2.6 | 4.6 | 26th | 29.8 | 36.9 | average | 81% |
| Bundoora (Latrobe University) | 22.3 | +1.8 | 29.4 | 22nd | 12.6 | +3.0 | 6.0 | 26th | 29.1 | 53.4 | average | 54% |
| Cerberus | 21.2 | +1.6 | 29.0 | 20th | 13.1 | +3.4 | 8.3 | 28th | 79.4 | 65.6 | average | 121% |
| Coldstream | 21.9 | +1.7 | 28.4 | 20th | 10.3 | +4.0 | 3.1 | 28th | 70.2 | 59.6 | average | 118% |
| Cranbourne Botanic Gardens | 21.3 | +1.5 | 29.0 | 20th | 12.4 | +2.3 | 7.0 | 28th | 109.8 | 69.1 | high | 159% |
| Essendon Airport | 22.5 | +2.5 | 30.9 | 22nd | 12.6 | +2.8 | 5.8 | 26th | 10.2 | 54.8 | v low | 19% |
| Ferny Creek (Dunns Hill) | 17.0 | +1.1 | 24.2 | 20th | 11.4 | +2.1 | 5.2 | 28th | 67.4 | 93.4 | average | 72% |
| Laverton RAAF | 22.5 | +2.3 | 30.7 | 22nd | 12.5 | +2.7 | 6.1 | 26th | 19.2 | 45.6 | low | 42% |
| Melbourne Airport | 22.1 | +1.9 | 29.4 | 22nd | 12.4 | +2.3 | 6.6 | 26th | 17.0 | 43.8 | low | 39% |
| Melbourne Regional Office | 22.9 | +2.6 | 30.1 | 22nd | 14.5 | +3.7 | 8.7 | 26th | 19.6 | 57.1 | low | 34% |
| Moorabbin Airport | 21.9 | +1.8 | 29.6 | 20th | 12.9 | +2.5 | 8.0 | 26th | 65.4 | 62.6 | average | 104% |
| Scoresby Research Institute | 21.5 | +1.6 | 28.2 | 20th | 12.2 | +2.2 | 7.2 | 26th | 49.4 | 66.3 | average | 75% |
| Viewbank (ARPANSA) | 22.3 | +0.9 | 29.0 | 20th | 12.6 | +2.8 | 6.4 | 26th | 38.2 | 52.7 | average | 72% |
Details Records Summaries Important notes the top
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 5 am on Monday 3 May 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
- media@bom.gov.au (03) 9669 4057
- Enquiries
- helpdesk.climate@bom.gov.au
Unless otherwise noted, all maps, graphs and diagrams in this page are licensed under the Creative Commons Attribution 4.0 International Licence
