IDD11030
Australian Government Bureau of Meteorology
Northern Territory
Issued at 8:30 am CST on Saturday 19 September 2026
for the period until midnight CST Monday 21 September 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.
A strong high pressure system (1029 hPa) over the southeast of the country is driving fresh to strong easterly winds over the coastal waters. The ridge will weaken from Sunday.
Winds: East to northeasterly 10 to 15 knots, reaching up to 20 knots offshore north of Channel Point during the day. Winds tending northwest to northeasterly in the evening then becoming variable about 10 knots in the late evening. Seas: Around 1 metre. Swell: Northeasterly around 1 metre. Weather: Mostly sunny.
Winds: Variable about 10 knots becoming east to northeasterly 10 to 15 knots before dawn then tending northwest to southwesterly in the evening. Seas: Below 1 metre. Swell: Northeasterly around 1 metre offshore. Weather: Cloud clearing.
Winds: Variable about 10 knots becoming northwest to northeasterly 10 to 15 knots during the day then tending northwest to southwesterly during the afternoon. Seas: Below 1 metre. Swell: Westerly below 1 metre. Weather: Sunny.
Winds: Easterly 15 to 20 knots. Seas: 1 to 1.5 metres. Swell: East to northeasterly around 1 metre inshore, increasing to 1 to 2 metres offshore. Weather: Mostly sunny.
Winds: Easterly 15 to 20 knots. Seas: 1 to 1.5 metres, decreasing to 1 metre around midday. Swell: East to northeasterly around 1 metre inshore, increasing to 1 to 2 metres offshore. Weather: Mostly sunny.
Winds: East to northeasterly 10 to 15 knots. Seas: Below 1 metre. Swell: East to northeasterly around 1 metre. Weather: Mostly sunny.
Winds: Easterly 15 to 20 knots tending northeasterly in the early afternoon. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.
Winds: Easterly 10 to 15 knots turning north to northeasterly in the late morning and early afternoon. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Sunny.
Winds: Easterly 10 to 15 knots tending northwest to northeasterly during the afternoon then tending northeasterly during the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.
Winds: Easterly 15 to 20 knots, reaching up to 25 knots offshore during the morning and again in the evening. Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres offshore. Swell: Easterly around 1 metre inshore, increasing to 1 to 2 metres offshore. Weather: Mostly sunny.
Winds: Easterly 15 to 20 knots, reaching up to 25 knots offshore west of Maningrida early in the morning. Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres during the morning. Swell: Easterly around 1 metre inshore, increasing to 1 to 1.5 metres offshore. Weather: Partly cloudy.
Winds: Easterly 15 to 20 knots. Seas: Around 1 metre. Swell: Easterly around 1 metre. Weather: Mostly sunny.
Winds: East to southeasterly 15 to 25 knots, reaching up to 30 knots offshore north of Cape Wessel during the morning. Seas: 1.5 to 2.5 metres, decreasing to 1.5 metres by early evening. Swell: Easterly 1 to 1.5 metres, increasing to 1 to 2 metres inshore. Weather: Partly cloudy.
Winds: Easterly 15 to 20 knots, reaching up to 25 knots offshore early in the morning. Seas: 1 to 2 metres, decreasing to 1 to 1.5 metres by early evening. Swell: Easterly 1 to 1.5 metres, decreasing to around 1 metre during the morning, then increasing to 1 to 1.5 metres around midday. Weather: Mostly sunny.
Winds: Easterly 15 to 20 knots. Seas: Around 1 metre, increasing to 1 to 1.5 metres offshore north of Cape Wessel. Swell: Easterly around 1 metre. Weather: Partly cloudy.
Winds: Easterly 15 to 25 knots turning southeasterly 10 to 15 knots in the evening. Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres east of Groote Eylandt. Swell: Easterly around 1 metre, increasing to 1 to 1.5 metres around midday, then tending east to northeasterly 1 to 2 metres during the afternoon. Weather: Mostly sunny.
Winds: Southeasterly 10 to 15 knots turning easterly 15 to 20 knots early in the morning. Seas: 1 to 1.5 metres, increasing to 1 to 2 metres during the morning, then decreasing to 1 metre later in the evening. Swell: Easterly 1 to 1.5 metres, decreasing below 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon. Weather: Cloud clearing.
Winds: Variable about 10 knots becoming east to southeasterly 10 to 15 knots during the morning then becoming variable about 10 knots during the evening. Seas: Below 1 metre. Swell: East to northeasterly around 1 metre. Weather: Sunny.
Winds: Easterly 10 to 15 knots tending northeasterly 15 to 20 knots in the middle of the day. Seas: Around 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.
Winds: Easterly 10 to 15 knots turning north to northeasterly in the early afternoon then becoming variable below 10 knots in the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Sunny.
Winds: East to northeasterly below 10 knots tending north to northeasterly 10 to 15 knots during the day then becoming variable below 10 knots 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 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.