Wednesday, 2 November 2011 - Monthly Climate Summary for Melbourne Metropolitan Area and Environs - Product code IDCKGC1xx0

Melbourne Metropolitan Area and Environs in October 2011:

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 11.4°C (departure from normal 1.9°C). That the overnight temperatures in Melbourne are higher than those in most surrounding localities - to illustrate, overnight temperatures at Melbourne Airport averaged 9.0°C - is a consequence of the city being under the influence of the effect of urbanisation (cities are usually warmer than their rural surroundings, especially at night, because of heat stored in bricks and concrete and trapped between close-packed buildings). Daytime maximum temperatures were warmer than those usually experienced and averaged 20.8°C (departure from normal 1.1°C). Total rainfall for the month was 64.2 mm, this being close to that usually recorded  (normal 66.4 mm, percentage of normal received 97%).

As is typical of seasons when we have a La Niña event over the Pacific, Victoria's weather was influenced by easterly flow, as a consequence of a persistence of anticyclones over higher latitudes - pressures were as much as 10 hPa above normal to the south of Tasmania.This resulted in more humid and slightly warmer weather than usual.

Details Extremes Records Summaries Important notes the top

Rainfall

The wettest overall was 104.7 mm at Cranbourne Botanic Gardens.

Temperature

Maximum temperature

The hottest day was 31.7 °C at Avalon Airport on the 20th.

The warmest days on average were 20.8 °C at Melbourne Regional Office.

The coolest days on average were 19.1 °C at Cerberus.

The coldest day was 11.8 °C at Melbourne Airport on the 1st.

Minimum temperature

The coldest night was 0.9 °C at Coldstream on the 3rd.

The coolest nights on average were 8.1 °C at Coldstream.

The warmest nights on average were 11.4 °C at Melbourne Regional Office.

The warmest night was 21.0 °C at Moorabbin Airport on the 20th.

Some sites had their warmest October night (highest daily minimum temperature) on record.

Some sites had their highest October mean daily minimum temperature on record.

Some sites had their highest October mean daily minimum temperature for at least 10 years.

Wind

The strongest wind gust was 80 km/h at Melbourne Airport on the 28th.

Details Extremes Records Summaries Important notes the top

Details Extremes Records Summaries Important notes the top

Details Extremes Records Summaries Important notes the top