Roper Groote Coast Forecast: Cape Arnhem to QLD-NT Border

View the current warnings for the Northern Territory

Forecast issued at 2:30 am CST on Thursday 21 May 2026.

Weather Situation

A ridge of high pressure strengthening over Central Australia is directing moderate to fresh southeasterly winds over coastal waters. Winds will start to decrease in strength from Friday.

Forecast for Thursday until midnight

Strong Wind Warning for Thursday for Roper Groote Coast

Winds
Southeasterly 15 to 20 knots, reaching up to 30 knots offshore south of Numbulwar during the morning.
Seas
1.5 to 2 metres.
Swell
East to southeasterly below 1 metre.
Weather
Partly cloudy.

Friday 22 May

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

Saturday 23 May

Winds
East to southeasterly 15 to 20 knots.
Seas
Below 1 metre, increasing to 1 to 1.5 metres east of Groote Eylandt.
Swell
East to northeasterly below 1 metre.
Weather
Mostly sunny.

Please be awareWind 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.

Nearby Coastal Waters

QLD - Torres Strait - Coastal Waters Forecast QLD - North East Gulf of Carpentaria - Coastal Waters Forecast QLD - South East Gulf of Carpentaria - Coastal Waters Forecast WA- North Kimberley - Coastal Waters Forecast Roper Groote Coast Forecast Gove Peninsula Coast Forecast Arafura Coast Forecast Van Diemen Gulf Forecast North Tiwi Coast Forecast Beagle Bonaparte Gulf Forecast

The next routine forecast will be issued at 8:30 am CST Thursday.

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