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 4:01 pm CST on Thursday 19 September 2024
for the period until midnight CST Sunday 22 September 2024.

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 weak ridge will strengthen over the Gulf of Carpentaria from Saturday.

Beagle Bonaparte Coast: WA-NT Border to Cape Fourcroy

Forecast for Thursday 19 September until midnight

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Northeasterly below 1 metre. Weather: Mostly clear.

Forecast for Friday 20 September

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: Northeasterly below 1 metre. Weather: Partly cloudy.

Forecast for Saturday 21 September

Winds: Variable about 10 knots. Seas: Below 1 metre. Swell: North to northeasterly below 1 metre. Weather: Partly cloudy.

Forecast for Sunday 22 September

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

North Tiwi Coast: Cape Fourcroy to Cape Don

Forecast for Thursday 19 September until midnight

Winds: Easterly 10 to 15 knots, reaching up to 20 knots in the evening. Seas: Around 1 metre. Swell: East to northeasterly around 1 metre. Weather: Mostly clear.

Forecast for Friday 20 September

Winds: East to northeasterly 10 to 15 knots. Seas: Below 1 metre. Swell: East to northeasterly around 1 metre. Weather: Mostly sunny.

Forecast for Saturday 21 September

Winds: East to northeasterly about 10 knots increasing to 10 to 15 knots in the evening then decreasing to about 10 knots in the late evening. Seas: Below 1 metre. Swell: East to northeasterly below 1 metre. Weather: Mostly sunny.

Forecast for Sunday 22 September

Winds: East to northeasterly about 10 knots. Seas: Below 1 metre. Swell: East to northeasterly below 1 metre. Weather: Sunny.

Van Diemen Gulf

Forecast for Thursday 19 September until midnight

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

Forecast for Friday 20 September

Winds: East to northeasterly 10 to 15 knots decreasing to about 10 knots in the morning then tending north to northeasterly 10 to 15 knots in the early afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Saturday 21 September

Winds: East to northeasterly about 10 knots tending north to northeasterly 10 to 15 knots in the late afternoon then becoming east to northeasterly about 10 knots in the late evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Sunday 22 September

Winds: East to northeasterly about 10 knots tending north to northeasterly 10 to 15 knots during the afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

Arafura Coast: Cape Don to Cape Wessel

Forecast for Thursday 19 September until midnight

Winds: Easterly 10 to 15 knots, reaching up to 20 knots in the north in the evening. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore west of Maningrida. Swell: Easterly below 1 metre. Weather: Mostly clear.

Forecast for Friday 20 September

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

Forecast for Saturday 21 September

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

Forecast for Sunday 22 September

Winds: Easterly 10 to 15 knots. Seas: Below 1 metre. Swell: Easterly below 1 metre. Weather: Sunny.

Gove Peninsula Coast: Cape Wessel to Cape Arnhem

Forecast for Thursday 19 September until midnight

Winds: Southeasterly 10 to 15 knots, reaching up to 20 knots in the far northeast in the late evening. Seas: Around 1 metre. Swell: East to southeasterly around 1 metre. Weather: Partly cloudy.

Forecast for Friday 20 September

Winds: East to southeasterly 10 to 15 knots decreasing to about 10 knots in the evening. Seas: Below 1 metre. Swell: Easterly below 1 metre. Weather: Mostly sunny.

Forecast for Saturday 21 September

Winds: East to southeasterly about 10 knots increasing to 10 to 15 knots before dawn. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Sunday 22 September

Winds: East to southeasterly 10 to 15 knots. Seas: Around 1 metre. Swell: Northeast to southeasterly below 1 metre. Weather: Sunny.

Roper Groote Coast: Cape Arnhem to QLD-NT Border

Forecast for Thursday 19 September until midnight

Winds: Easterly 10 to 15 knots decreasing to about 10 knots in the late evening. Seas: Around 1 metre. Swell: Easterly below 1 metre. Weather: Mostly clear.

Forecast for Friday 20 September

Winds: Variable about 10 knots becoming easterly 10 to 15 knots in the morning then becoming variable about 10 knots in the late afternoon. Seas: Below 1 metre. Swell: Easterly below 1 metre. Weather: Sunny.

Forecast for Saturday 21 September

Winds: Variable about 10 knots becoming east to southeasterly 10 to 15 knots in the morning then decreasing to below 10 knots in the late evening. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

Forecast for Sunday 22 September

Winds: Easterly 15 to 20 knots decreasing to about 10 knots during the evening. Seas: Below 1 metre, increasing to 1 to 1.5 metres south of Numbulwar during the morning. Swell: Below 0.5 metres. Weather: Mostly sunny.

Darwin Harbour

Forecast for Thursday 19 September until midnight

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

Forecast for Friday 20 September

Winds: East to northeasterly about 10 knots tending north to northeasterly 10 to 15 knots in the early afternoon then becoming variable below 10 knots in the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Saturday 21 September

Winds: Northeasterly below 10 knots increasing to 10 to 15 knots in the middle of the day then becoming variable about 10 knots in the early afternoon. Seas: Below 0.5 metres. Swell: Below 0.5 metres. Weather: Partly cloudy.

Forecast for Sunday 22 September

Winds: East to northeasterly below 10 knots tending northwest to northeasterly 10 to 15 knots during the afternoon then becoming west to northwesterly below 10 knots during the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.

The next routine forecast will be issued at 4:45 am CST Friday.

* 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.