The Australian Weather Forum

The varying temperature of Port Phillip Bay has the ability to invigorate showers.

These are the websites I use to check the bay temp. The first link is particularly good as is shows historical graphs.

http://www.earthsci.unimelb.edu.au/~awatkins/temps.html

http://www.earthsci.unimelb.edu.au/~awatkins/bay.html