Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

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IDD11030

Australian Government Bureau of Meteorology
Northern Territory

Coastal Waters Forecast for the Northern Territory

Issued at 8:30 pm CST on Tuesday 28 October 2025
for the period until midnight CST Friday 31 October 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 trough south of the Top End directs northeast to northwest winds over Northern Territory waters. A ridge will extend over the Gulf of Carpentaria from Thursday.

Beagle Bonaparte Coast: WA-NT Border to Cape Fourcroy

Forecast for Tuesday 28 October until midnight

Winds: West to northwesterly 10 to 15 knots. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Clear.

Forecast for Wednesday 29 October

Winds: Northwesterly 10 to 15 knots, reaching up to 20 knots offshore south of Channel Point early in the morning. Winds becoming variable about 10 knots in the morning. Seas: Around 1 metre. Swell: Westerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm in the morning and afternoon.

Forecast for Thursday 30 October

Winds: North to northwesterly about 10 knots increasing to 10 to 15 knots before dawn then decreasing to about 10 knots in the middle of the day. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm in the morning and afternoon.

Forecast for Friday 31 October

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm.

North Tiwi Coast: Cape Fourcroy to Cape Don

Forecast for Tuesday 28 October until midnight

Winds: West to northwesterly below 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Mostly clear.

Forecast for Wednesday 29 October

Winds: West to northwesterly about 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Mostly sunny morning. The chance of a thunderstorm in the afternoon.

Forecast for Thursday 30 October

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.

Forecast for Friday 31 October

Winds: East to northeasterly below 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Mostly sunny morning. The chance of a thunderstorm in the afternoon.

Van Diemen Gulf

Forecast for Tuesday 28 October until midnight

Winds: West to northwesterly about 10 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly clear.

Forecast for Wednesday 29 October

Winds: West to northwesterly about 10 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.

Forecast for Thursday 30 October

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.

Forecast for Friday 31 October

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Mostly sunny morning. The chance of a thunderstorm in the afternoon and evening.

Arafura Coast: Cape Don to Cape Wessel

Forecast for Tuesday 28 October until midnight

Winds: Northwesterly 10 to 15 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly clear.

Forecast for Wednesday 29 October

Winds: West to northwesterly about 10 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny morning. The chance of a thunderstorm inshore in the afternoon and evening.

Forecast for Thursday 30 October

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Mostly sunny morning. The chance of a thunderstorm inshore in the afternoon.

Forecast for Friday 31 October

Winds: East to northeasterly about 10 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Gove Peninsula Coast: Cape Wessel to Cape Arnhem

Forecast for Tuesday 28 October until midnight

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

Forecast for Wednesday 29 October

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Thursday 30 October

Winds: East to southeasterly about 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Friday 31 October

Winds: Easterly 10 to 15 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: The chance of a thunderstorm in the morning. Mostly sunny day.

Roper Groote Coast: Cape Arnhem to QLD-NT Border

Forecast for Tuesday 28 October until midnight

Winds: North to northeasterly 10 to 15 knots. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Mostly clear.

Forecast for Wednesday 29 October

Winds: North to northwesterly 10 to 15 knots becoming variable about 10 knots in the early morning then becoming east to northeasterly 10 to 15 knots in the late afternoon. Seas: Below 1 metre. Swell: Northwest to northeasterly below 1 metre. Weather: The chance of a thunderstorm south of Numbulwar in the morning. Sunny afternoon.

Forecast for Thursday 30 October

Winds: Variable about 10 knots becoming east to northeasterly 10 to 15 knots in the evening then decreasing to about 10 knots in the late evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Friday 31 October

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

Darwin Harbour

Forecast for Tuesday 28 October until midnight

Winds: West to northwesterly below 10 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Clear.

Forecast for Wednesday 29 October

Winds: Northwesterly below 10 knots becoming west to southwesterly in the early morning. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the afternoon and evening.

Forecast for Thursday 30 October

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Forecast for Friday 31 October

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the afternoon and evening.

The next routine forecast will be issued at 2:30 am CST 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 Forecasts for information on wind, wave and weather conditions for neighbouring coastal zones.