Tumby Bay Weather Forecast

Spencer Gulf Coastal Waters

Wind

South to southeasterly 15 to 20 knots tending south to southwesterly 15 to 25 knots in the early afternoon then tending south to southeasterly in the evening.

Seas

1 to 1.5 metres, increasing to 1 to 2 metres north of Cowell to Wallaroo around midday.

1st Swell

South to southwesterly around 1 metre.

Weather

Mostly sunny. The chance of a thunderstorm north of Cowell to Wallaroo during this afternoon and evening.

Weather Situation

A ridge of high pressure persists over southern parts of SA. A trough about the north of the state will move south and deepen today, before pushing into the far northeast on Monday as the high centre moves into the Bight. Most of the state will be dominated by the ridge of high pressure on Tuesday, but is forecast to weaken as another trough enters from the west. A cold front moves over the south on Wednesday.