South East Coastal Waters Forecast: Tasman Island to South East Cape

View the current warnings for Tasmania

Forecast issued at 10:00 am EST on Tuesday 20 May 2025.

Weather Situation

A high pressure system lies to the north of Tasmania, with the high expected to move over the Tasman Sea later today, directing a northwesterly flow over the state ahead of an approaching weak trough. The trough will move over Tasmania on Wednesday, with a high forecast to build over northern Tasmania on Thursday.

Forecast for Tuesday until midnight

Strong Wind Warning for Tuesday for South East Coast

Winds
North to northwesterly 10 to 15 knots, reaching up to 30 knots offshore in the late afternoon.
Seas
Below 1 metre, increasing to 1 to 2 metres offshore.
Swell
West to southwesterly 2.5 to 3 metres.
Weather
Partly cloudy.

Wednesday 21 May

Winds
Northwesterly 10 to 15 knots, reaching up to 25 knots offshore in the evening.
Seas
Around 1 metre, increasing to 1 to 2 metres offshore.
Swell
West to southwesterly 2.5 to 3 metres.
Weather
Partly cloudy.

Thursday 22 May

Winds
Westerly 20 to 30 knots turning northwesterly 10 to 15 knots during the evening.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon or evening.
Swell
Southwesterly 3 to 4 metres.
Weather
Partly cloudy.

Please be awareWind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height.

Nearby Coastal Waters

Tas - BANKS STRAIGHT AND FRANKLIN SOUND Tas - CENTRAL NORTH COAST, Stanley to the Northern Tip of Flinders Is Tas - EAST OF FLINDERS ISLAND, Northern Tip of Flinders Is to St Helens Pt Tas - UPPER EAST COAST, St Helens Pt to Wineglass Bay Tas - LOWER EAST COAST, Wineglass Bay to Tasman Island Tas - SOUTHEAST COAST, Tasman Is to South East Cape Tas - SOUTHWEST COAST, South East Cape to Low Rocky Pt Tas - CENTRAL WEST COAST, Low Rocky Pt to Sandy Cape Tas - FAR NORTHWEST COAST, Sandy Cape to Stanley and King Island Vic - East Gippsland Coast - Coastal Waters Forecast Vic - Central Gippsland Coast - Coastal Waters Forecast Vic - Central Coast - Coastal Waters Forecast Vic - West Coast - Coastal Waters Forecast

The next routine forecast will be issued at 4:05 pm EST Tuesday.

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