there will initially be cool, moist south-westerlies associated with showers while the high is to the west
as the high becomes centred over Melbourne, the weather becomes more settled with clear skies, light winds and thus mild-warm weather:
there is often morning cloud associated with local weather phenomenon of land breezes overnight converging on Port Phillip Bay causing uplift and cloudiness over the bay which moves over Melbourne and then retreats back over the Bay by 11am -noon
there is usually a southerly afternoon seabreeze often creating isolated cloud build up, which settles by ~9-10pm, when a mild land & urban breeze take over after midnight creating an offshore breeze
on particularly hot days, especially if there is some humidity, fair-weather convection cumulus clouds may develop in the afternoon creating thunderstorms
NB. in winter, the high pressure systems generally pass Melbourne well to the north resulting in cool westerly winds
as the centre of the high passes to the east of Melbourne, the winds change to a hot, dry north-north-westerly which gradually builds in strength and usually heralds an incoming cold front which is preceded by increasing cloudiness, humidity and usually thunderstorms as the warm is is forced upwards by the advancing front
as the cold front crosses Melbourne, the temperature suddenly drops within minutes and the wind changes direction to a south-westerly which is associated with cumulus clouds and showers
the cycle begins again, often cycles such as these recur on almost weekly cycles with the 1 or 2 days of clear skies occurring on same days each week