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 5:43 pm CST on Wednesday 29 April 2026
for the period until midnight CST Saturday 2 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 ridge remains over the Territory, moving into northeast Australia and weakening this weekend. Moderate to fresh east to southeasterly winds result over the coastal waters.

Beagle Bonaparte Coast: WA-NT Border to Cape Fourcroy

Forecast for Wednesday 29 April until midnight

Winds: Easterly 10 to 15 knots becoming variable about 10 knots in the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Clear.

Forecast for Thursday 30 April

Winds: Variable about 10 knots becoming easterly 10 to 15 knots in the early morning then becoming variable about 10 knots in the late afternoon. Seas: Below 1 metre. Swell: East to northeasterly below 1 metre. Weather: Mostly sunny.

Forecast for Friday 1 May

Winds: Variable about 10 knots becoming easterly 10 to 15 knots in the morning then becoming variable about 10 knots in the middle of the day. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

Forecast for Saturday 2 May

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

North Tiwi Coast: Cape Fourcroy to Cape Don

Forecast for Wednesday 29 April until midnight

Winds: Easterly 10 to 15 knots. Seas: Below 1 metre. Swell: East to northeasterly below 1 metre. Weather: Mostly clear.

Forecast for Thursday 30 April

Winds: Easterly 10 to 15 knots. Seas: Around 1 metre. Swell: East to northeasterly below 1 metre. Weather: Partly cloudy.

Forecast for Friday 1 May

Winds: Easterly 10 to 15 knots. Seas: Around 1 metre. Swell: East to northeasterly below 1 metre. Weather: Partly cloudy. 60% chance of showers.

Forecast for Saturday 2 May

Winds: Easterly 10 to 15 knots. Seas: Around 1 metre. Swell: East to northeasterly below 1 metre. Weather: Partly cloudy. 50% chance of showers.

Van Diemen Gulf

Forecast for Wednesday 29 April until midnight

Winds: East to southeasterly 10 to 15 knots turning northeasterly in the late afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly clear.

Forecast for Thursday 30 April

Winds: Easterly 10 to 15 knots. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Friday 1 May

Winds: Easterly 10 to 15 knots. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Saturday 2 May

Winds: Easterly 10 to 15 knots becoming variable about 10 knots during the afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

Arafura Coast: Cape Don to Cape Wessel

Forecast for Wednesday 29 April until midnight

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre. Swell: Northeast to southeasterly below 1 metre. Weather: Mostly clear.

Forecast for Thursday 30 April

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres in the far north. Swell: Easterly below 1 metre. Weather: Partly cloudy. 60% chance of showers.

Forecast for Friday 1 May

Winds: Easterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres in the far north. Swell: Easterly below 1 metre. Weather: Partly cloudy. 60% chance of showers.

Forecast for Saturday 2 May

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres in the far north. Swell: Easterly below 1 metre. Weather: Mostly sunny.

Gove Peninsula Coast: Cape Wessel to Cape Arnhem

Forecast for Wednesday 29 April until midnight

Winds: East to southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Easterly below 1 metre. Weather: Mostly clear.

Forecast for Thursday 30 April

Winds: Easterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Easterly below 1 metre. Weather: Partly cloudy. 50% chance of showers.

Forecast for Friday 1 May

Winds: Easterly 15 to 20 knots turning southeasterly during the afternoon and evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore. Swell: East to southeasterly below 1 metre. Weather: Partly cloudy.

Forecast for Saturday 2 May

Winds: Southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: East to southeasterly below 1 metre. Weather: Partly cloudy.

Roper Groote Coast: Cape Arnhem to QLD-NT Border

Forecast for Wednesday 29 April until midnight

Winds: Easterly 10 to 15 knots, reaching up to 20 knots west of Groote Eylandt in the early afternoon. Winds turning southeasterly in the evening. Seas: 1 to 1.5 metres. Swell: Easterly below 1 metre. Weather: Mostly clear.

Forecast for Thursday 30 April

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres east of Groote Eylandt during the morning. Swell: Easterly below 1 metre. Weather: Partly cloudy. 50% chance of showers.

Forecast for Friday 1 May

Winds: Easterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres northeast of Groote Eylandt. Swell: Easterly below 1 metre. Weather: Partly cloudy. 50% chance of showers.

Forecast for Saturday 2 May

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre. Swell: East to northeasterly below 1 metre. Weather: Mostly sunny morning. The chance of a thunderstorm in the afternoon and evening.

Darwin Harbour

Forecast for Wednesday 29 April until midnight

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

Forecast for Thursday 30 April

Winds: Easterly about 10 knots becoming north to northeasterly in the late afternoon then becoming easterly in the late evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Friday 1 May

Winds: East to southeasterly below 10 knots becoming northeasterly in the middle of the day. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Saturday 2 May

Winds: Easterly below 10 knots becoming north to northeasterly during the day. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

The next routine forecast will be issued at 8:30 pm 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.