Australian Government

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 Tuesday 18 November 2025
for the period until midnight EDT Friday 21 November 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 series of cold fronts are forecast to pass over the state in a persistent west to southwesterly flow on the eastern flank of a high pressure system to the west. The flow will ease later this week as the high pressure system moves closer to Tasmania and extends a ridge over the state on Friday.

Derwent Estuary

Forecast for Tuesday 18 November until midnight

Winds: Westerly 10 to 15 knots becoming northwesterly below 10 knots in the late evening. Seas: Below 1 metre. Weather: Cloudy. 70% chance of showers.

Forecast for Wednesday 19 November

Winds: Northwesterly 15 to 20 knots. Seas: Below 1 metre. Weather: Cloudy. 60% chance of showers.

Forecast for Thursday 20 November

Winds: Northwest to southwesterly 10 to 15 knots. Seas: Below 1 metre. Weather: Partly cloudy.

Forecast for Friday 21 November

Winds: West to northwesterly about 10 knots becoming south to southwesterly during the day then tending south to southeasterly 10 to 15 knots during the afternoon. Seas: Below 0.5 metres, increasing to around 1 metre during the afternoon. Weather: Partly cloudy.

Channel

Forecast for Tuesday 18 November until midnight

Winds: Westerly 15 to 20 knots turning northwesterly 10 to 15 knots in the late evening. Seas: 1 to 1.5 metres, decreasing below 1 metre around midday. Weather: Cloudy. 80% chance of showers.

Forecast for Wednesday 19 November

Winds: Northwesterly 15 to 20 knots. Seas: Below 1 metre. Weather: Cloudy. 80% chance of showers, with possible small hail.

Forecast for Thursday 20 November

Winds: Northwesterly 10 to 15 knots turning westerly 15 to 20 knots during the morning. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the afternoon. Weather: Partly cloudy. 60% chance of showers, with possible small hail.

Forecast for Friday 21 November

Winds: Northwesterly 10 to 15 knots tending northwest to southwesterly during the morning then becoming variable below 10 knots during the evening. Seas: Around 1 metre. Weather: Cloudy.

Storm Bay

Forecast for Tuesday 18 November until midnight

Winds: Westerly 15 to 20 knots turning northwesterly 10 to 15 knots in the late evening. Seas: Around 1 metre. Weather: Cloudy. 60% chance of showers.

Forecast for Wednesday 19 November

Winds: Northwesterly 15 to 20 knots tending westerly in the early afternoon. Seas: Around 1 metre. Weather: Partly cloudy. 60% chance of showers.

Forecast for Thursday 20 November

Winds: West to northwesterly 10 to 15 knots tending west to southwesterly 15 to 20 knots during the morning. Seas: Around 1 metre. Weather: Partly cloudy.

Forecast for Friday 21 November

Winds: West to northwesterly 10 to 15 knots shifting southerly during the day then tending northeast to southeasterly during the evening. Seas: Around 1 metre. Weather: Partly cloudy.

Frederick Henry Bay and Norfolk Bays

Forecast for Tuesday 18 November until midnight

Winds: Westerly 15 to 20 knots. Seas: Below 1 metre. Weather: Cloudy. 60% chance of showers.

Forecast for Wednesday 19 November

Winds: Northwesterly 15 to 20 knots. Seas: Below 1 metre. Weather: Partly cloudy. 50% chance of showers.

Forecast for Thursday 20 November

Winds: West to northwesterly 10 to 15 knots tending west to southwesterly during the morning. Seas: Around 1 metre. Weather: Partly cloudy.

Forecast for Friday 21 November

Winds: West to northwesterly 10 to 15 knots shifting easterly during the evening. Seas: Around 1 metre. Weather: Partly cloudy.

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

* 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.