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Bureau of Meteorology


Coastal Waters Forecast 

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IDT12331

Australian Government Bureau of Meteorology
Tasmania

Coastal Waters Forecast for Tasmania
Eastern Zones: Northern Tip of Flinders Island to Tasman Island

Issued at 10:00 pm EDT on Thursday 19 March 2026
for the period until midnight EDT Sunday 22 March 2026.

Please be aware
Wind 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.

Warning Information

For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659 210* or listen for warnings on relevant TV and radio broadcasts.

Weather Situation

A ridge of high pressure over Tasmania will persist over the coming days, with a weak cold front to clip the south of the state on Saturday morning. The high centre will move into the Tasman Sea on Sunday and direct a northerly flow over Tasmania, ahead of another cold front that is expected to weaken and stall over Tasmania during Monday.

East of Flinders Island: Northern Tip of Flinders Island to St Helens Point

Forecast for Thursday 19 March until midnight

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Swell: Southerly below 1 metre. Weather: Mostly clear.

Forecast for Friday 20 March

Winds: Variable about 10 knots becoming west to northwesterly 10 to 15 knots in the early afternoon then decreasing to about 10 knots in the late evening. Winds reaching up to 20 knots inshore in the late afternoon. Seas: Below 1 metre. Swell: Southerly below 1 metre. Weather: Partly cloudy.

Forecast for Saturday 21 March

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Southerly below 1 metre. Weather: Mostly sunny.

Forecast for Sunday 22 March

Winds: Northeasterly 10 to 15 knots turning northerly 15 to 20 knots during the afternoon. Seas: Around 1 metre. Swell: Southerly below 1 metre. Weather: Partly cloudy.

Banks Strait and Franklin Sound

Forecast for Thursday 19 March until midnight

Winds: East to northeasterly below 10 knots. Seas: Below 0.5 metres. Swell: Southerly below 0.5 metres. Weather: Clear.

Forecast for Friday 20 March

Winds: Variable about 10 knots becoming west to northwesterly 10 to 15 knots in the early afternoon then decreasing to below 10 knots in the late evening. Seas: Below 1 metre. Swell: Southerly below 0.5 metres. Weather: Partly cloudy.

Forecast for Saturday 21 March

Winds: Variable below 10 knots. Seas: Below 1 metre. Swell: Northwest to southwesterly below 1 metre. Weather: Mostly sunny.

Forecast for Sunday 22 March

Winds: Northeasterly 10 to 15 knots turning northerly during the afternoon. Seas: Below 1 metre. Swell: Northwest to southwesterly below 0.5 metres. Weather: Cloudy.

Upper East Coast: St Helens Point to Wineglass Bay

Forecast for Thursday 19 March until midnight

Winds: East to northeasterly below 10 knots. Seas: Below 0.5 metres. Swell: Southerly around 1 metre. Weather: Partly cloudy.

Forecast for Friday 20 March

Winds: Variable below 10 knots becoming north to northwesterly 10 to 15 knots in the middle of the day then tending north to northeasterly in the late afternoon. Winds reaching up to 20 knots inshore in the late afternoon. Seas: Below 1 metre. Swell: Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Mostly sunny.

Forecast for Saturday 21 March

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Southerly around 1 metre. Weather: Mostly sunny.

Forecast for Sunday 22 March

Winds: Northerly 15 to 25 knots. Seas: Around 1 metre, increasing to 1 to 2 metres during the afternoon. Swell: Southerly below 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Partly cloudy.

Lower East Coast: Wineglass Bay to Tasman Island

Forecast for Thursday 19 March until midnight

Winds: East to northeasterly below 10 knots. Seas: Below 1 metre. Swell: Southwesterly around 1 metre inshore, increasing to 1.5 to 2 metres offshore. Weather: Cloudy.

Forecast for Friday 20 March

Winds: North to northeasterly 10 to 15 knots tending north to northwesterly in the early morning then becoming variable about 10 knots in the morning. Seas: Below 1 metre. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore. Weather: Partly cloudy.

Forecast for Saturday 21 March

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore. Weather: Mostly sunny.

Forecast for Sunday 22 March

Winds: Northerly 15 to 25 knots. Seas: Around 1 metre, increasing to 1 to 2 metres during the morning. Swell: Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2.5 metres offshore. Weather: Mostly sunny.

South East Coast: Tasman Island to South East Cape

Forecast for Thursday 19 March until midnight

Winds: East to northeasterly below 10 knots. Seas: Below 0.5 metres. Swell: Southwesterly 2.5 metres. Weather: Cloudy.

Forecast for Friday 20 March

Winds: North to northeasterly 10 to 15 knots turning west to northwesterly 15 to 20 knots in the early morning. Winds reaching up to 25 knots offshore in the evening. Seas: Below 1 metre, increasing to 1 to 2 metres during the morning. Swell: Southwesterly 2.5 to 3 metres. Weather: Partly cloudy.

Forecast for Saturday 21 March

Winds: West to northwesterly 15 to 20 knots becoming variable about 10 knots in the late evening. Seas: 1 to 1.5 metres, decreasing to 1 metre around midday. Swell: Southwesterly 2.5 to 3 metres. Weather: Partly cloudy.

Forecast for Sunday 22 March

Winds: North to northeasterly 10 to 15 knots tending north to northwesterly 15 to 20 knots during the morning then tending northwest to southwesterly during the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore during the morning. Swell: Southwesterly 2 to 3 metres. Weather: Sunny.

South West Coast: South East Cape to Low Rocky Point

Forecast for Thursday 19 March until midnight

Winds: North to northeasterly about 10 knots. Seas: Below 1 metre. Swell: Southwesterly 3 metres. Weather: Cloudy.

Forecast for Friday 20 March

Winds: Northerly below 10 knots tending northwesterly 10 to 15 knots before dawn then increasing to 15 to 25 knots in the early morning. Seas: Below 1 metre, increasing to 1 to 2 metres during the morning. Swell: Southwesterly 2.5 to 3 metres, tending westerly 2.5 metres by early evening. Weather: Partly cloudy. 70% chance of showers.

Forecast for Saturday 21 March

Winds: Northwesterly 15 to 20 knots. Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning. Swell: Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore during the morning. Weather: Cloudy. 60% chance of showers.

Forecast for Sunday 22 March

Winds: Northwesterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore during the afternoon. Swell: Southwesterly 2.5 to 3 metres. Weather: Mostly sunny.

The next routine forecast will be issued at 4:00 am EDT Friday.

* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones. Marine forecasts are also available on VHF and HF radio. View the radio schedule on www.bom.gov.au/marine

Check the latest Coastal Waters Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones.