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

View the current warnings for Tasmania

Forecast issued at 5:00 am EST on Wednesday 17 September 2025.

Weather Situation

A westerly stream continues over Tasmania today, with a ridge to build over the state later tonight as a high moves quickly over Victoria. A northwesterly airstream will develop during Thursday as the high moves over the northern Tasman Sea. Cold fronts are expected to cross Tasmania early Friday morning and during Friday evening, with another cold front to approach the state from the west late Saturday evening.

Forecast for Wednesday until midnight

Gale Warning for Wednesday for South East Coast

Winds
Westerly 25 to 30 knots, reaching up to 35 knots in the late morning and afternoon.
Seas
2.5 to 4 metres.
Swell
Westerly 3 to 5 metres.
Weather
Cloudy. 90% chance of showers, with possible small hail.

Thursday 18 September

Strong Wind Warning for Thursday for South East Coast

Winds
Westerly 15 to 25 knots, reaching up to 30 knots early in the morning. Winds turning north to northwesterly early in the morning.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, increasing to 1 to 2 metres offshore around midday.
Swell
West to southwesterly 3 to 4 metres, decreasing to 2.5 to 3 metres during the morning, then increasing to 2 to 4 metres later in the evening.
Weather
Cloudy. 70% chance of showers.

Friday 19 September

Winds
Northwesterly 20 to 30 knots turning northerly 15 to 20 knots during the evening.
Seas
1.5 to 2.5 metres.
Swell
West to southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore during the afternoon.
Weather
Partly cloudy. 80% chance of showers, with possible small hail in the evening.

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 Wednesday.

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