Port Arthur Weather Forecast

Gulf St Vincent Coastal Waters

Wind

North to northeasterly 10 to 15 knots decreasing to about 10 knots in the late afternoon.

Seas

Below 1 metre.

1st Swell

Southeast to southwesterly below 0.5 metres.

Weather

Mostly sunny.

Weather Situation

A high pressure system over New South Wales extends a ridge over South Australia. The ridge will ease as the high moves further away into the Tasman Sea this morning. A trough is forecast to move across the western and central waters Tuesday afternoon and evening, pushing across southeastern coasts Wednesday morning. Another high pressure system is expected to become established south of the Bight later next week.