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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 4:05 pm EST on Monday 20 July 2026
for the period until midnight EST Friday 24 July 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 over Victoria is moving into the Tasman Sea, directing a northwesterly flow over Tasmania. A weak trough is expected to move over the state on Monday evening into Tuesday. A strong cold front is forecast to move over the state from the west late Wednesday and another cold front follows on Thursday, bringing strong west to southwesterly winds across the state.

Derwent Estuary

Forecast for Monday 20 July until midnight

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

Forecast for Tuesday 21 July

Winds: North to northwesterly about 10 knots. Seas: Below 0.5 metres. Weather: Partly cloudy. 70% chance of showers.

Forecast for Wednesday 22 July

Winds: North to northwesterly 10 to 15 knots tending west to northwesterly in the late afternoon. Seas: Below 1 metre. Weather: Partly cloudy. 80% chance of showers, with possible small hail in the afternoon and evening.

Forecast for Thursday 23 July

Winds: Northwesterly 15 to 20 knots turning westerly during the afternoon. Seas: Below 1 metre. Weather: Partly cloudy. 95% chance of showers, with possible small hail.

Forecast for Friday 24 July

Winds: West to northwesterly 10 to 15 knots. Seas: Below 1 metre. Weather: Cloudy. 80% chance of showers.

Channel

Forecast for Monday 20 July until midnight

Winds: North to northwesterly about 10 knots. Seas: Below 1 metre. Weather: Cloudy. 60% chance of showers.

Forecast for Tuesday 21 July

Winds: North to northwesterly about 10 knots. Seas: Below 0.5 metres. Weather: Partly cloudy. 80% chance of showers.

Forecast for Wednesday 22 July

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

Forecast for Thursday 23 July

Winds: Northwesterly 15 to 20 knots tending westerly 20 to 30 knots during the afternoon. Seas: Around 1 metre, increasing to 1 to 2 metres during the evening. Weather: Cloudy. Near 100% chance of showers, with possible small hail.

Forecast for Friday 24 July

Winds: Northwest to southwesterly 15 to 25 knots becoming northwesterly 15 to 20 knots during the afternoon then tending westerly during the evening. Seas: 1 to 2 metres, decreasing below 1 metre during the morning. Weather: Cloudy. 90% chance of showers, with possible small hail in the morning.

Storm Bay

Forecast for Monday 20 July until midnight

Winds: Northerly about 10 knots increasing to 10 to 15 knots in the evening. Seas: Below 1 metre. Weather: Cloudy.

Forecast for Tuesday 21 July

Winds: Northerly below 10 knots increasing to 10 to 15 knots in the evening. Seas: Below 1 metre. Weather: Partly cloudy. 70% chance of showers.

Forecast for Wednesday 22 July

Winds: Northerly 10 to 15 knots turning west to northwesterly in the morning. Seas: Below 1 metre. Weather: Partly cloudy. 80% chance of showers, with possible small hail in the afternoon and evening.

Forecast for Thursday 23 July

Winds: Northwesterly 15 to 25 knots turning westerly 20 to 30 knots during the afternoon. Seas: Around 1 metre, increasing to 1.5 to 2.5 metres during the afternoon. Weather: Partly cloudy. 95% chance of showers, with possible small hail.

Forecast for Friday 24 July

Winds: Westerly 20 to 30 knots. Seas: 1.5 to 2.5 metres, decreasing to 1 metre during the morning. Weather: Cloudy. 90% chance of showers, with possible small hail in the morning.

Frederick Henry Bay and Norfolk Bays

Forecast for Monday 20 July until midnight

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

Forecast for Tuesday 21 July

Winds: North to northwesterly about 10 knots increasing to 10 to 15 knots in the late evening. Seas: Below 0.5 metres. Weather: Partly cloudy. 70% chance of showers.

Forecast for Wednesday 22 July

Winds: Northerly 10 to 15 knots turning west to northwesterly during the morning. Seas: Below 1 metre. Weather: Partly cloudy. 70% chance of showers, with possible small hail in the late afternoon and evening.

Forecast for Thursday 23 July

Winds: Northwesterly 15 to 20 knots turning westerly 20 to 25 knots during the afternoon. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the afternoon or evening. Weather: Partly cloudy. 95% chance of showers, with possible small hail.

Forecast for Friday 24 July

Winds: Westerly 15 to 25 knots decreasing to 10 to 15 knots during the morning. Seas: 1 to 1.5 metres, decreasing below 1 metre during the morning. Weather: Cloudy. 80% chance of showers, with possible small hail in the morning.

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

* 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.