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Bureau of Meteorology


Coastal Waters Forecast 

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IDT15123

Australian Government Bureau of Meteorology
Tasmania

Coastal Waters Forecast
Bass Strait and Approaches

Issued at 4:30 am EDT on Thursday 11 December 2025
for the period until midnight EDT Saturday 13 December 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 high pressure system is expected to move over the state today and continue moving eastwards over the Tasman Sea during Friday. A cold front is then forecast to cross the state during Saturday

Central Coast: Cape Otway to Wilsons Promontory

Forecast for Thursday 11 December until midnight

Winds: South to southeasterly 10 to 15 knots turning easterly 15 to 20 knots during the afternoon and evening. Seas: Around 1 metre. Swell: Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres in the west. Weather: Sunny.

Forecast for Friday 12 December

Winds: Easterly 15 to 20 knots turning northeasterly 10 to 15 knots during the day. Seas: 1 to 1.5 metres, decreasing to 1 metre around midday. Swell: Southwesterly 1 to 1.5 metres, increasing to 1.5 to 2 metres in the far west. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: North to northeasterly 10 to 15 knots shifting southwesterly 15 to 20 knots during the morning then tending westerly 10 to 15 knots during the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres in the far east during the morning. 1st Swell: Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres during the afternoon. 2nd Swell: Easterly below 1 metre, increasing to 1 to 1.5 metres in the far east during the morning. Weather: Partly cloudy. The chance of a thunderstorm in the morning.

Central Gippsland Coast: Wilsons Promontory to Lakes Entrance

Forecast for Thursday 11 December until midnight

Winds: Variable about 10 knots becoming easterly 15 to 20 knots in the early afternoon. Seas: Below 1 metre, decreasing below 0.5 metres during the morning, then increasing to around 1 metre during the afternoon. Swell: Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the morning. Weather: Sunny.

Forecast for Friday 12 December

Winds: Easterly 15 to 20 knots turning northeasterly in the early morning. Seas: 1 to 1.5 metres. Swell: Below 0.5 metres, tending east to northeasterly 1 to 1.5 metres during the morning. Weather: Sunny morning. The chance of a thunderstorm inshore in the afternoon.

Forecast for Saturday 13 December

Winds: Northwest to northeasterly 10 to 15 knots tending west to northwesterly 15 to 20 knots during the morning then tending west to southwesterly during the afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon. Swell: East to northeasterly 1 to 1.5 metres. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the morning and afternoon.

East Gippsland Coast: Lakes Entrance to 60nm east of Gabo Island

Forecast for Thursday 11 December until midnight

Winds: Southwesterly 10 to 15 knots shifting east to northeasterly 15 to 20 knots in the afternoon. Seas: Around 1 metre. Swell: Southwesterly around 1 metre. Weather: Sunny.

Forecast for Friday 12 December

Strong Wind Warning for Friday for East Gippsland Coast

Winds: Northeasterly 15 to 25 knots, reaching up to 30 knots offshore during the day. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning. 1st Swell: Northeast to southeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore during the afternoon. 2nd Swell: Southerly around 1 metre. Weather: Mostly sunny morning. The chance of a thunderstorm inshore in the afternoon.

Forecast for Saturday 13 December

Winds: North to northeasterly 20 to 30 knots turning west to northwesterly 10 to 15 knots during the afternoon. Seas: 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning. Swell: East to northeasterly 1 to 2 metres. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Far North West Coast: Sandy Cape to Stanley

Forecast for Thursday 11 December until midnight

Winds: Southerly 10 to 15 knots turning easterly in the late morning and afternoon. Winds reaching up to 20 knots east of King Island in the late evening. Seas: Below 1 metre. Swell: Southwesterly 1.5 to 2.5 metres. Weather: Cloud clearing.

Forecast for Friday 12 December

Strong Wind Warning for Friday for Far North West Coast

Winds: East to northeasterly 15 to 25 knots, reaching up to 30 knots inshore in the late morning and early afternoon. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres during the morning. Swell: Southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres around midday. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: East to northeasterly 10 to 15 knots shifting southwesterly 15 to 20 knots during the morning then tending westerly 15 to 25 knots during the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning. 1st Swell: Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres during the morning. 2nd Swell: East to northeasterly around 1 metre. Weather: Partly cloudy. The chance of a thunderstorm in the morning.

Central North Coast: Stanley to Northern Tip of Flinders Island

Forecast for Thursday 11 December until midnight

Winds: South to southwesterly 10 to 15 knots becoming variable about 10 knots in the early morning then becoming east to northeasterly 10 to 15 knots in the middle of the day. Winds reaching up to 20 knots offshore in the late evening. Seas: Around 1 metre. Swell: Westerly around 1 metre. Weather: Sunny.

Forecast for Friday 12 December

Winds: East to northeasterly 15 to 20 knots, reaching up to 25 knots inshore during the morning. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres inshore during the morning. Swell: Northeasterly below 1 metre inshore, increasing to around 1 metre offshore. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: Northwest to northeasterly 10 to 15 knots tending west to northwesterly during the morning then becoming westerly 15 to 25 knots during the day. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon or evening. Swell: Northeasterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning.

Banks Strait and Franklin Sound

Forecast for Thursday 11 December until midnight

Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots offshore early in the morning. Winds turning east to northeasterly in the late morning and early afternoon. Seas: Around 1 metre. Swell: Northwest to southwesterly below 1 metre. Weather: Sunny.

Forecast for Friday 12 December

Winds: Northeasterly 15 to 20 knots. Seas: Around 1 metre. Swell: Northeast to southeasterly below 0.5 metres, tending northeasterly 1 to 1.5 metres around midday. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: Northerly 15 to 20 knots turning west to northwesterly 10 to 15 knots during the day. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: East to northeasterly 1 to 1.5 metres, increasing to 1 to 2 metres about Banks Strait. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning.

The next routine forecast will be issued at 10:00 am EDT Thursday.

* 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.