Patches of sun are expected to break up a cloudy day on Saturday, with isolated showers forecast along the Illawarra coast.

South to south-westerly winds and increasing rain will keep things cool on Sunday and the drizzle will continue on the Queen's Birthday holiday, before the weather clears up towards the end of next week.

Despite being cooler than in recent weeks, the forecasts remain above the long-term average for this time of year, which usually keeps temperatures around 17 degrees.