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Bureau of Meteorology


Coastal Waters Forecast 

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IDT12410

Australian Government Bureau of Meteorology
Tasmania

Local Waters Forecast for South East Inshore

Issued at 4:00 am EDT on Thursday 11 December 2025
for the period until midnight EDT Sunday 14 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, ahead of a secondary stronger cold front to cross from the west during Sunday, clearing to the east of Tasmania later.

Derwent Estuary

Forecast for Thursday 11 December until midnight

Winds: West to southwesterly below 10 knots tending southeasterly 10 to 15 knots in the middle of the day then becoming variable below 10 knots in the evening. Seas: Below 1 metre. Weather: Mostly sunny.

Forecast for Friday 12 December

Winds: Variable below 10 knots becoming east to southeasterly 15 to 20 knots in the middle of the day then tending northwest to southwesterly 10 to 15 knots in the evening. Seas: Below 1 metre. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: West to southwesterly below 10 knots tending south to southeasterly 15 to 20 knots during the morning then becoming variable about 10 knots during the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Sunday 14 December

Winds: Northwesterly 10 to 15 knots tending westerly 15 to 25 knots during the morning. Seas: Around 1 metre. Weather: Partly cloudy. 80% chance of showers.

Channel

Forecast for Thursday 11 December until midnight

Winds: West to northwesterly about 10 knots tending south to southeasterly 15 to 20 knots in the morning then becoming variable about 10 knots in the evening. Seas: Below 0.5 metres, increasing to around 1 metre during the morning. Weather: Cloud clearing.

Forecast for Friday 12 December

Winds: Variable about 10 knots becoming southeast to southwesterly 10 to 15 knots in the early afternoon then becoming variable about 10 knots in the late evening. Seas: Below 1 metre. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: Variable about 10 knots becoming south to southwesterly 15 to 20 knots during the morning then shifting north to northeasterly 10 to 15 knots during the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Sunday 14 December

Winds: Northerly 10 to 15 knots turning westerly 15 to 25 knots during the morning. Seas: Around 1 metre. Weather: Cloudy. 90% chance of showers, with possible small hail in the afternoon and evening.

Storm Bay

Forecast for Thursday 11 December until midnight

Winds: West to southwesterly about 10 knots tending southeasterly 10 to 15 knots in the middle of the day then turning northeasterly in the evening. Seas: Around 1 metre. Weather: Mostly sunny.

Forecast for Friday 12 December

Winds: North to northeasterly 10 to 15 knots turning east to southeasterly in the late morning then tending east to northeasterly 15 to 20 knots in the late afternoon. Seas: Around 1 metre. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: Variable about 10 knots becoming southeast to southwesterly 15 to 20 knots during the morning then becoming variable about 10 knots during the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Sunday 14 December

Winds: Northwesterly 15 to 20 knots tending westerly 20 to 30 knots during the morning. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy. 80% chance of showers.

Frederick Henry Bay and Norfolk Bays

Forecast for Thursday 11 December until midnight

Winds: West to southwesterly about 10 knots tending southeast to southwesterly 10 to 15 knots in the middle of the day then tending east to northeasterly in the late afternoon. Seas: Below 1 metre. Weather: Mostly sunny.

Forecast for Friday 12 December

Winds: Northeasterly 15 to 20 knots turning northerly 10 to 15 knots in the evening. Seas: Below 1 metre. Weather: Mostly sunny.

Forecast for Saturday 13 December

Winds: Variable about 10 knots becoming southeast to southwesterly 15 to 20 knots during the morning then becoming variable about 10 knots during the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the morning.

Forecast for Sunday 14 December

Winds: Northwesterly 15 to 20 knots tending westerly 20 to 30 knots during the morning. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy. 80% chance of showers.

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

* Calls to 1300 number cost around 27.5c inc. 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 Forecast or Local Waters Forecast at http://www.bom.gov.au/tas/forecasts/map.shtml for information on wind, wave and weather conditions for these coastal zones.