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 10:00 am EST on Wednesday 20 May 2026
for the period until midnight EST Saturday 23 May 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 high pressure centre near the South Australian coast extends a ridge of high pressure to the west of Tasmania. The ridge slowly approaches Tasmania and is expected to cross during Thursday and Friday, bringing mostly settled weather to the state. The high is then forecast to move to the east of Tasmania later Friday as a cold front approaches from the west during Saturday.

Derwent Estuary

Forecast for Wednesday 20 May until midnight

Winds: West to southwesterly 10 to 15 knots becoming west to northwesterly below 10 knots in the evening. Seas: Below 1 metre. Weather: Cloudy.

Forecast for Thursday 21 May

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

Forecast for Friday 22 May

Winds: North to northwesterly about 10 knots becoming east to northeasterly during the day then becoming northerly during the evening. Seas: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Saturday 23 May

Winds: Northerly 10 to 15 knots. Seas: Below 0.5 metres. Weather: Mostly sunny.

Channel

Forecast for Wednesday 20 May until midnight

Winds: West to southwesterly 15 to 20 knots tending west to northwesterly below 10 knots in the evening. Seas: Around 1 metre. Weather: Cloudy.

Forecast for Thursday 21 May

Winds: North to northwesterly about 10 knots increasing to 10 to 15 knots in the evening then decreasing to about 10 knots in the late evening. Seas: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Friday 22 May

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Saturday 23 May

Winds: North to northeasterly about 10 knots increasing to 10 to 15 knots during the afternoon. Seas: Below 0.5 metres. Weather: Partly cloudy.

Storm Bay

Forecast for Wednesday 20 May until midnight

Winds: Southwesterly 15 to 20 knots turning westerly 10 to 15 knots in the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres around midday, then decreasing below 1 metre later in the evening. Weather: Cloudy.

Forecast for Thursday 21 May

Winds: West to northwesterly about 10 knots tending north to northwesterly 10 to 15 knots in the morning then decreasing to below 10 knots in the late evening. Seas: Below 1 metre. Weather: Partly cloudy.

Forecast for Friday 22 May

Winds: Variable about 10 knots. Seas: Below 1 metre. Weather: Partly cloudy.

Forecast for Saturday 23 May

Winds: North to northeasterly below 10 knots increasing to 10 to 15 knots during the morning. Seas: Below 1 metre. Weather: Mostly sunny.

Frederick Henry Bay and Norfolk Bays

Forecast for Wednesday 20 May until midnight

Winds: West to southwesterly 15 to 20 knots decreasing to about 10 knots in the evening. Seas: Around 1 metre. Weather: Cloudy.

Forecast for Thursday 21 May

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

Forecast for Friday 22 May

Winds: North to northwesterly below 10 knots becoming east to northeasterly during the afternoon. Seas: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Saturday 23 May

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

The next routine forecast will be issued at 4:05 pm EST Wednesday.

* 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.