Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

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IDT12332

Australian Government Bureau of Meteorology
Tasmania

Coastal Waters Forecast for Tasmania
Southern Zones: Tasman Island to Low Rocky Point

Issued at 10:00 am EST on Wednesday 20 May 2026
for the period until midnight EST Friday 22 May 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 high pressure centre near the South Australian coast extends a ridge of high pressure to the west of Tasmania. The ridge slowly approaches Tasmania and is expected to cross during Thursday and Friday, bringing mostly settled weather to the state. The high is then forecast to move to the east of Tasmania later Friday as a cold front approaches from the west during Saturday.

South East Coast: Tasman Island to South East Cape

Forecast for Wednesday 20 May until midnight

Strong Wind Warning for Wednesday for South East Coast

Winds: Southwesterly 15 to 25 knots, reaching up to 30 knots in the late morning and afternoon. Seas: 2 to 2.5 metres. 1st Swell: Southwesterly 1.5 to 2.5 metres. 2nd Swell: Northeasterly 1 to 1.5 metres. Weather: Cloudy. 50% chance of showers.

Forecast for Thursday 21 May

Winds: West to southwesterly 15 to 20 knots turning northwesterly during the morning. Winds reaching up to 25 knots offshore during the afternoon and evening. Seas: 1 to 2 metres. 1st Swell: Southwesterly 2 to 3 metres. 2nd Swell: Northeasterly 1 to 1.5 metres. Weather: Cloudy.

Forecast for Friday 22 May

Winds: Northwesterly 15 to 20 knots becoming variable about 10 knots during the afternoon. Seas: 1 to 2 metres, decreasing below 1 metre during the afternoon or evening. Swell: Southwesterly 2.5 to 4 metres. Weather: Partly cloudy.

South West Coast: South East Cape to Low Rocky Point

Forecast for Wednesday 20 May until midnight

Strong Wind Warning for Wednesday for South West Coast

Winds: Southwesterly 20 to 25 knots, reaching up to 30 knots in the late morning and early afternoon. Winds turning westerly 15 to 20 knots during the afternoon and evening. Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres later in the evening. 1st Swell: Westerly 2 metres, increasing to 2 to 3 metres around midday, then tending southwesterly 3 metres later in the evening. 2nd Swell: Easterly around 1 metre. Weather: Cloudy. 50% chance of showers.

Forecast for Thursday 21 May

Strong Wind Warning for Thursday for South West Coast

Winds: Westerly 15 to 20 knots turning northwesterly 20 to 25 knots during the morning. Winds reaching up to 30 knots offshore during the afternoon and evening. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres around midday. 1st Swell: Southwesterly 2.5 to 3 metres, tending westerly 2.5 metres by early evening. 2nd Swell: Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Cloudy. 50% chance of showers.

Forecast for Friday 22 May

Winds: Northwesterly 15 to 25 knots turning northerly below 10 knots during the evening. Seas: 1.5 to 2.5 metres, decreasing below 1 metre during the evening. Swell: Westerly 2.5 to 3 metres, tending southwesterly 3 to 4 metres during the afternoon or evening. Weather: Partly cloudy. 50% chance of showers.

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

* 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.