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 EST on Tuesday 25 August 2026
for the period until midnight EST Friday 28 August 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 low pressure system over Victoria on Tuesday morning is expected to broaden and move south over Tasmania during the day, before moving away to the east on Wednesday morning. A high pressure system over South Australia is expected to extend a ridge over Tasmania later Wednesday, before moving to north of the state on Thursday. A cold front is expected to approach the southwest late Thursday, crossing during Friday.

Derwent Estuary

Forecast for Tuesday 25 August until midnight

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Weather: Cloudy. 95% chance of showers.

Forecast for Wednesday 26 August

Winds: West to southwesterly 15 to 20 knots tending south to southwesterly in the morning then becoming variable below 10 knots in the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre by early evening. Weather: Cloudy. 70% chance of showers.

Forecast for Thursday 27 August

Winds: North to northwesterly below 10 knots. Seas: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Friday 28 August

Winds: West to northwesterly below 10 knots becoming southwesterly during the day then becoming west to northwesterly during the evening. Seas: Below 1 metre. Weather: Partly cloudy. 60% chance of showers.

Channel

Forecast for Tuesday 25 August until midnight

Winds: North to northeasterly below 10 knots becoming northwesterly in the late afternoon. Seas: Below 0.5 metres. Weather: Cloudy. 95% chance of rain.

Forecast for Wednesday 26 August

Strong Wind Warning for Wednesday for Channel

Winds: Westerly 10 to 15 knots turning south to southwesterly 20 to 30 knots during the morning then decreasing to 10 to 15 knots in the early afternoon. Seas: Around 1 metre, increasing to 1.5 to 2.5 metres during the morning, then decreasing below 1 metre during the afternoon. Weather: Cloudy. 80% chance of showers.

Forecast for Thursday 27 August

Winds: North to northwesterly about 10 knots. Seas: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Friday 28 August

Winds: Variable about 10 knots becoming west to southwesterly 10 to 15 knots during the afternoon then becoming west to northwesterly about 10 knots during the evening. Seas: Below 1 metre. Weather: Partly cloudy. 80% chance of showers.

Storm Bay

Forecast for Tuesday 25 August until midnight

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Weather: Cloudy. 95% chance of showers.

Forecast for Wednesday 26 August

Strong Wind Warning for Wednesday for Storm Bay

Winds: Westerly 15 to 20 knots turning south to southwesterly 20 to 30 knots during the morning. Seas: Around 1 metre, increasing to 2 to 3 metres during the morning, then decreasing below 1 metre by early evening. Weather: Cloudy. 80% chance of showers.

Forecast for Thursday 27 August

Winds: North to northwesterly about 10 knots. Seas: Below 1 metre. Weather: Mostly sunny.

Forecast for Friday 28 August

Winds: Northwesterly 10 to 15 knots turning west to southwesterly below 10 knots during the morning then becoming variable during the afternoon. Seas: Below 1 metre. Weather: Partly cloudy. 70% chance of showers.

Frederick Henry Bay and Norfolk Bays

Forecast for Tuesday 25 August until midnight

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Weather: Cloudy. 95% chance of showers.

Forecast for Wednesday 26 August

Strong Wind Warning for Wednesday for Frederick Henry Bay and Norfolk Bay

Winds: Westerly 15 to 20 knots turning south to southwesterly 20 to 30 knots during the morning. Seas: Below 1 metre, increasing to 1 to 2 metres during the morning, then decreasing below 1 metre by early evening. Weather: Cloudy. 70% chance of showers.

Forecast for Thursday 27 August

Winds: North to northwesterly below 10 knots. Seas: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Friday 28 August

Winds: West to northwesterly about 10 knots becoming southwesterly during the day then becoming west to northwesterly during the evening. Seas: Below 1 metre. Weather: Partly cloudy. 60% chance of showers.

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