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

View the current warnings for Tasmania

Forecast issued at 4:05 pm EST on Monday 10 August 2026.

Weather Situation

A low sits to the northeast of Tasmania and is slowly moving east into the Tasman Sea. A weak ridge is expected to cross over the state during Tuesday before a cold front arrives early Wednesday morning. A high is then forecast to move over the mainland directing a westerly flow over Tasmania on Thursday and persisting into Friday.

Forecast for Monday until midnight

Winds
Southerly 10 to 15 knots, reaching up to 20 knots near Tasman Island in the late evening.
Seas
Around 1 metre.
1st Swell
Southwesterly 2 to 3 metres.
2nd Swell
Northeasterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore.
Weather
Partly cloudy.

Tuesday 11 August

Winds
Southwesterly 15 to 25 knots turning northwesterly 15 to 20 knots in the afternoon.
Seas
Around 1 metre, increasing to 1 to 2 metres during the morning.
1st Swell
Southwesterly 2 to 3 metres.
2nd Swell
Northeasterly 1 to 1.5 metres, decreasing to around 1 metre around midday, then tending east to northeasterly 1 to 1.5 metres during the afternoon.
Weather
Cloudy. 50% chance of showers.

Wednesday 12 August

Winds
North to northwesterly 15 to 25 knots turning westerly 20 to 30 knots during the morning.
Seas
1 to 2 metres, increasing to 2 to 3 metres during the morning.
1st Swell
Southwesterly 3 to 5 metres.
2nd Swell
East to northeasterly 1 to 1.5 metres, decreasing to around 1 metre later in the evening.
Weather
Cloudy. 95% chance of showers.

Thursday 13 August

Winds
Westerly 25 to 35 knots.
Seas
2 to 3 metres, increasing to 2 to 4 metres offshore.
Swell
West to southwesterly 4 to 6 metres.
Weather
Partly cloudy. 90% chance of showers.

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 10:00 pm EST Monday.

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