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Photo: Cultivated Land near Wando Vale
Rain clouds over cultivated land near Wando Vale

Average annual rainfall in the area ranges from 500 mm/yr near Lake Bolac to more than 910 mm in the Cobboboonee Forest, west of the Grampians. The region has a high winter rainfall. (Glenelg CaLPB, 1997).
The climate can vary significantly from along the coast to further inland. For example, temperatures average a maximum of 17.9C and a minimum average of 9.7C throughout the year in Warrnambool. In comparison, the average maximum temperature throughout the year in Casterton (in the region’s northwest) is 19.9C while the minimum average is 8.3C.

During January, the average maximum temperature in Warrnambool is just 22.2C and the minimum 12.8C. In July, Warrnambool’s average temperature high is 13.3C and its low 6.2C. Mean annual rainfall in Warrnambool is 743 mm.

Temperatures in Casterton are significantly higher than in the south during summer, with the January average maximum temperature being 27C and the minimum 11.8C. In July, Casterton’s average temperature high is 13.3C and its low 4.9C. Mean annual rainfall in Casterton is 655 mm.

Source: Bureau of Meteorology Climate Averages website

Climate and Weather Data on the Bureau of Meteorology website

Forecast information, including provincial city and fire weather forecasts (external link)

Glenelg region climate averages (external link)

Warrnambool climate information (external link)

The Bureau of Meteorology website provides a regular radar update covering a 128 km radius from Melbourne.


Bureau of Meteorology Climate Averages website.

Glenelg Regional Catchment and Land Protection Board. (1997). Regional Catchment Strategy, Glenelg CaLPB, Hamilton.
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