Australian Government

Bureau of Meteorology


Coastal Waters Forecast 

Marine (lite) Home

IDD11030

Australian Government Bureau of Meteorology
Northern Territory

Coastal Waters Forecast for the Northern Territory

Issued at 8:30 am CST on Wednesday 10 June 2026
for the period until midnight CST Friday 12 June 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 of high pressure persists across central Australia, maintaining the moderate to fresh east to southeasterly flow over northern and eastern coastal waters.

Beagle Bonaparte Coast: WA-NT Border to Cape Fourcroy

Forecast for Wednesday 10 June until midnight

Winds: Easterly 10 to 15 knots becoming variable about 10 knots in the late afternoon. Seas: Around 1 metre. Swell: East to northeasterly below 1 metre. Weather: Sunny.

Forecast for Thursday 11 June

Winds: Southeasterly 10 to 15 knots tending easterly in the early morning then becoming variable about 10 knots in the late afternoon. Winds reaching up to 20 knots offshore south of Channel Point during the morning. Seas: Around 1 metre. Swell: Northeasterly below 1 metre. Weather: Sunny.

Forecast for Friday 12 June

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

North Tiwi Coast: Cape Fourcroy to Cape Don

Forecast for Wednesday 10 June until midnight

Winds: Easterly 10 to 15 knots, reaching up to 20 knots offshore during the day. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore. Swell: East to northeasterly around 1 metre. Weather: Sunny.

Forecast for Thursday 11 June

Winds: Easterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore. Swell: East to northeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore around midday. Weather: Mostly sunny.

Forecast for Friday 12 June

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore. Swell: East to northeasterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Mostly sunny.

Van Diemen Gulf

Forecast for Wednesday 10 June until midnight

Winds: Easterly 10 to 15 knots becoming variable about 10 knots in the early afternoon then becoming east to northeasterly 10 to 15 knots in the evening. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Thursday 11 June

Winds: East to southeasterly 15 to 20 knots becoming variable about 10 knots in the early afternoon then becoming east to northeasterly 10 to 15 knots in the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon. Swell: Below 0.5 metres. Weather: Sunny.

Forecast for Friday 12 June

Winds: East to southeasterly 15 to 20 knots becoming variable about 10 knots during the afternoon then becoming east to northeasterly 10 to 15 knots during the evening. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

Arafura Coast: Cape Don to Cape Wessel

Forecast for Wednesday 10 June until midnight

Winds: Southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore. Swell: Easterly below 1 metre. Weather: Partly cloudy.

Forecast for Thursday 11 June

Winds: Southeasterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: Easterly around 1 metre. Weather: Partly cloudy.

Forecast for Friday 12 June

Winds: Southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1.5 metres offshore. Swell: Easterly below 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Partly cloudy.

Gove Peninsula Coast: Cape Wessel to Cape Arnhem

Forecast for Wednesday 10 June until midnight

Winds: Easterly 15 to 20 knots turning southeasterly in the middle of the day. Seas: 1.5 metres. Swell: Easterly below 1 metre. Weather: Mostly sunny.

Forecast for Thursday 11 June

Winds: East to southeasterly 15 to 20 knots, reaching up to 25 knots offshore during the morning and again in the late evening. Seas: 1.5 metres, increasing to 1.5 to 2 metres offshore south of Cape Wessel. Swell: East to southeasterly around 1 metre. Weather: Partly cloudy. 60% chance of showers.

Forecast for Friday 12 June

Winds: East to southeasterly 15 to 25 knots. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres offshore. Swell: East to southeasterly around 1 metre. Weather: Mostly sunny. 50% chance of showers.

Roper Groote Coast: Cape Arnhem to QLD-NT Border

Forecast for Wednesday 10 June until midnight

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres northeast of Groote Eylandt. Swell: Northeast to southeasterly below 1 metre. Weather: Mostly sunny.

Forecast for Thursday 11 June

Winds: Southeasterly 15 to 20 knots, reaching up to 25 knots northeast of Groote Eylandt in the late morning. Seas: Around 1 metre, increasing to 1 to 1.5 metres during the morning. Swell: Northeast to southeasterly below 1 metre. Weather: Mostly sunny.

Forecast for Friday 12 June

Winds: East to southeasterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres north of Numbulwar. Swell: Easterly around 1 metre. Weather: Mostly sunny.

Darwin Harbour

Forecast for Wednesday 10 June until midnight

Winds: Easterly 10 to 15 knots becoming variable below 10 knots in the middle of the day. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

Forecast for Thursday 11 June

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

Forecast for Friday 12 June

Winds: East to southeasterly about 10 knots becoming north to northeasterly during the afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

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