Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

Marine (lite) Home

IDT12332

Australian Government Bureau of Meteorology
Tasmania

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

Issued at 4:05 pm EST on Saturday 19 April 2025
for the period until midnight EST Tuesday 22 April 2025.

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 low pressure system develops in the Bight and moves towards the west coast of Tasmania during today. The low slows down and tracks northeast over western Victoria late Sunday. A ridge of high pressure extends to the south of the state on Monday from the Bight, and moves over Tasmania during Tuesday.

South East Coast: Tasman Island to South East Cape

Forecast for Saturday 19 April until midnight

Winds: Southwesterly 10 to 15 knots turning south to southeasterly below 10 knots in the evening. Seas: Around 1 metre. 1st Swell: Southwesterly 2 metres. 2nd Swell: Easterly 1.5 to 2 metres, decreasing to 1.5 metres later in the evening. Weather: Cloudy. 80% chance of showers.

Forecast for Sunday 20 April

Winds: Easterly 15 to 20 knots shifting north to northwesterly 10 to 15 knots during the afternoon and evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing to 1 metre during the afternoon. 1st Swell: Southwesterly 1.5 to 2 metres. 2nd Swell: Easterly 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres around midday. Weather: Cloudy. 90% chance of rain.

Forecast for Monday 21 April

Winds: Variable about 10 knots becoming southwesterly 15 to 20 knots before dawn. Seas: Below 1 metre, increasing to 1 to 1.5 metres around midday. 1st Swell: Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres by early evening. 2nd Swell: Easterly 1 to 1.5 metres, decreasing to around 1 metre during the morning. Weather: Partly cloudy.

Forecast for Tuesday 22 April

Winds: Southwesterly 15 to 20 knots turning south to southeasterly below 10 knots during the day. Seas: 1 to 1.5 metres, decreasing below 1 metre during the afternoon. Swell: Southwesterly 3 metres, increasing to 3 to 4 metres during the morning. Weather: Partly cloudy.

South West Coast: South East Cape to Low Rocky Point

Forecast for Saturday 19 April until midnight

Winds: South to southwesterly 10 to 15 knots tending south to southeasterly in the evening. Seas: Around 1 metre. 1st Swell: Southwesterly 2 metres. 2nd Swell: Easterly 1 to 1.5 metres inshore, increasing to 1 to 2 metres offshore. Weather: Cloudy. 90% chance of rain.

Forecast for Sunday 20 April

Winds: East to southeasterly 15 to 25 knots tending east to northeasterly 15 to 20 knots in the morning then becoming variable about 10 knots in the early afternoon. Seas: Below 1 metre, increasing to 1 to 2 metres during the morning, then decreasing below 1 metre during the afternoon. 1st Swell: Southwesterly 2 to 2.5 metres. 2nd Swell: Easterly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon. Weather: Cloudy. 95% chance of rain. The chance of a thunderstorm inshore.

Forecast for Monday 21 April

Winds: West to northwesterly 10 to 15 knots turning southwesterly 15 to 20 knots in the early morning. Seas: Around 1 metre. 1st Swell: Southwesterly 2 metres, increasing to 2.5 to 3 metres during the afternoon. 2nd Swell: Easterly 1 to 1.5 metres, decreasing to around 1 metre during the morning. Weather: Cloudy.

Forecast for Tuesday 22 April

Winds: Southwesterly 15 to 20 knots turning south to southeasterly below 10 knots during the morning. Seas: 1 to 1.5 metres, decreasing below 1 metre during the morning. Swell: Southwesterly 3 to 4 metres. Weather: Cloudy.

The next routine forecast will be issued at 5:00 am EST Sunday.

* 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.