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 Wednesday 15 July 2026.

Weather Situation

A ridge of high pressure directs an east to southeasterly flow across coastal waters, strengthening mid-week.

Forecast for Wednesday until midnight

Strong Wind Warning for Wednesday for Roper Groote Coast

Winds
Southeasterly 15 to 25 knots, reaching up to 30 knots offshore south of Numbulwar during the morning.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Swell
Northeast to southeasterly below 1 metre.
Weather
Mostly sunny.

Thursday 16 July

Strong Wind Warning for Thursday for Roper Groote Coast

Winds
Southeasterly 15 to 25 knots, reaching up to 30 knots offshore south of Numbulwar during the morning.
Seas
1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Swell
East to southeasterly around 1 metre.
Weather
Mostly sunny.

Friday 17 July

Winds
Southeasterly 15 to 25 knots.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres east of Groote Eylandt.
Swell
Northeast to southeasterly around 1 metre.
Weather
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 Wednesday.

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