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 4:45 am CST on Tuesday 4 August 2020
for the period until midnight CST Thursday 6 August 2020.

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 high [1019hPa] in the Tasman Sea extends a weakening ridge into northern Australia. A complex low pressure system over southwestern Australia is moving east and will extend a trough into central Australia from midweek.

Beagle Bonaparte Coast: WA-NT Border to Cape Fourcroy

Forecast for Tuesday 4 August until midnight

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

Forecast for Wednesday 5 August

Winds: Variable about 10 knots becoming west to northwesterly 10 to 15 knots in the early afternoon. Seas: Below 0.5 metres, increasing to around 1 metre south of Channel Point. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Thursday 6 August

Winds: Westerly 10 to 15 knots becoming variable about 10 knots during the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

North Tiwi Coast: Cape Fourcroy to Cape Don

Forecast for Tuesday 4 August until midnight

Winds: East to southeasterly 10 to 15 knots tending east to northeasterly below 10 knots during the afternoon and evening. Seas: Around 1 metre. Swell: East to northeasterly below 1 metre. Weather: Mostly sunny.

Forecast for Wednesday 5 August

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

Forecast for Thursday 6 August

Winds: Variable about 10 knots. Seas: Below 0.5 metres. Swell: East to northeasterly below 1 metre. Weather: Partly cloudy.

Van Diemen Gulf

Forecast for Tuesday 4 August until midnight

Winds: Easterly 10 to 15 knots becoming variable about 10 knots in the middle of the day then becoming northwest to northeasterly 10 to 15 knots in the late afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Wednesday 5 August

Winds: Variable about 10 knots becoming north to northwesterly 10 to 15 knots in the evening then tending north to northeasterly in the late evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Thursday 6 August

Winds: Variable about 10 knots becoming west to northwesterly 10 to 15 knots during the afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy.

Arafura Coast: Cape Don to Cape Wessel

Forecast for Tuesday 4 August until midnight

Winds: Easterly 10 to 15 knots, reaching up to 20 knots inshore in the late afternoon. Seas: 1 to 1.5 metres. Swell: Easterly below 1 metre. Weather: Mostly sunny.

Forecast for Wednesday 5 August

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

Forecast for Thursday 6 August

Winds: East to northeasterly 10 to 15 knots becoming variable about 10 knots during the morning. Seas: Below 1 metre. Swell: East to northeasterly below 1 metre. Weather: Partly cloudy.

Gove Peninsula Coast: Cape Wessel to Cape Arnhem

Forecast for Tuesday 4 August 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, increasing to 1 to 1.5 metres offshore north of Cape Wessel. Swell: Easterly below 1 metre. Weather: Partly cloudy.

Forecast for Wednesday 5 August

Winds: Easterly 10 to 15 knots, reaching up to 20 knots in the far northeast early in the morning and again in the late evening. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: Easterly below 1 metre. Weather: Mostly sunny.

Forecast for Thursday 6 August

Winds: Easterly 10 to 15 knots decreasing to about 10 knots during the day. Seas: 1 to 1.5 metres, decreasing to 1 metre during the morning. Swell: Easterly below 1 metre. Weather: Partly cloudy.

Roper Groote Coast: Cape Arnhem to QLD-NT Border

Forecast for Tuesday 4 August until midnight

Winds: South to southeasterly about 10 knots tending east to southeasterly 10 to 15 knots in the morning then becoming variable about 10 knots in the late afternoon. Seas: Below 1 metre. Swell: East to northeasterly below 1 metre. Weather: Sunny. Areas of morning fog south of Numbulwar with reduced visibility.

Forecast for Wednesday 5 August

Winds: Variable about 10 knots becoming easterly 10 to 15 knots in the middle of the day. Seas: Below 1 metre. Swell: East to northeasterly below 1 metre. Weather: Mostly sunny. Areas of morning fog south of Numbulwar with reduced visibility.

Forecast for Thursday 6 August

Winds: Variable about 10 knots becoming northeasterly 10 to 15 knots during the afternoon. Seas: Around 1 metre. Swell: Northeasterly below 1 metre. Weather: Mostly sunny.

Darwin Harbour

Forecast for Tuesday 4 August until midnight

Winds: East to southeasterly below 10 knots becoming north to northeasterly 10 to 15 knots in the middle of the day then becoming west to southwesterly below 10 knots in the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Wednesday 5 August

Winds: East to southeasterly below 10 knots becoming north to northeasterly 10 to 15 knots in the middle of the day then becoming west to southwesterly below 10 knots in the evening. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Mostly sunny.

Forecast for Thursday 6 August

Winds: Variable about 10 knots, becoming easterly in the morning and northeast to northwest about midday. Winds becoming westerly 10 to 15 knots during the afternoon. Seas: Below 1 metre. Swell: Below 0.5 metres. Weather: Partly cloudy.

The next routine forecast will be issued at 4:00 pm CST Tuesday.

* 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.