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

No warnings for the Northern Territory

Forecast issued at 8:30 am CST on Wednesday 26 August 2026.

Weather Situation

A weak ridge extends over coastal waters from the east. A high crossing southern Australia during the week will direct southeasterly winds over north and eastern coastal waters from today.

Forecast for Wednesday until midnight

Winds
Southeasterly 15 to 20 knots, reaching up to 25 knots offshore south of Numbulwar during the morning.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres offshore.
Swell
Below 0.5 metres.
Weather
Sunny.

Thursday 27 August

Winds
Southeasterly 15 to 25 knots.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres during the morning.
Swell
East to southeasterly below 1 metre.
Weather
Sunny.

Friday 28 August

Winds
Southeasterly 15 to 20 knots becoming variable about 10 knots during the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres offshore south of Numbulwar during the morning.
Swell
East to southeasterly below 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 2:30 pm CST Wednesday.

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