Coastal Waters Forecast 

IDD11030

Australian Government Bureau of Meteorology
Northern Territory

Coastal Waters Forecast for the Northern Territory

Issued at 8:30 am CST on Saturday 7 February 2026
for the period until midnight CST Monday 9 February 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

Weather Situation

A broad trough extends over the Top End, directing northwest to northeasterly winds across coastal waters.

Beagle Bonaparte Coast: WA-NT Border to Cape Fourcroy

Forecast for Saturday 7 February until midnight

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

Forecast for Sunday 8 February

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm.

Forecast for Monday 9 February

Winds: West to northwesterly about 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Partly cloudy. 70% chance of showers. The chance of a thunderstorm.

North Tiwi Coast: Cape Fourcroy to Cape Don

Forecast for Saturday 7 February until midnight

Winds: North to northeasterly below 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Partly cloudy. The chance of a thunderstorm inshore in the afternoon.

Forecast for Sunday 8 February

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the late morning and afternoon.

Forecast for Monday 9 February

Winds: Westerly below 10 knots. Seas: Below 0.5 metres. Swell: Westerly below 1 metre. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Van Diemen Gulf

Forecast for Saturday 7 February until midnight

Winds: East to northeasterly below 10 knots becoming north to northwesterly in the middle of the day. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy. The chance of a thunderstorm in the afternoon and evening.

Forecast for Sunday 8 February

Winds: Variable below 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the afternoon and evening.

Forecast for Monday 9 February

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 afternoon.

Arafura Coast: Cape Don to Cape Wessel

Forecast for Saturday 7 February until midnight

Winds: North to northwesterly 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 Sunday 8 February

Winds: North to northwesterly about 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm.

Forecast for Monday 9 February

Winds: West to northwesterly about 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.

Gove Peninsula Coast: Cape Wessel to Cape Arnhem

Forecast for Saturday 7 February until midnight

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

Forecast for Sunday 8 February

Winds: Variable about 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 morning and afternoon.

Forecast for Monday 9 February

Winds: West to northwesterly about 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.

Roper Groote Coast: Cape Arnhem to QLD-NT Border

Forecast for Saturday 7 February until midnight

Winds: Northeasterly about 10 knots. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy. The chance of a thunderstorm.

Forecast for Sunday 8 February

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Forecast for Monday 9 February

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the morning and afternoon.

Darwin Harbour

Forecast for Saturday 7 February until midnight

Winds: North to northeasterly below 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 Sunday 8 February

Winds: East to southeasterly below 10 knots becoming northerly in the middle of the day then becoming west to northwesterly in the evening. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 60% chance of showers. The chance of a thunderstorm in the afternoon and evening.

Forecast for Monday 9 February

Winds: West to southwesterly below 10 knots becoming south to southeasterly during the morning then becoming west to northwesterly during the day. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy. 80% chance of showers. The chance of a thunderstorm in the afternoon.

The next routine forecast will be issued at 2:30 pm CST Saturday.

* 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.