Van Diemen Gulf Forecast

View the current warnings for the Northern Territory

Forecast issued at 8:33 pm CST on Tuesday 18 November 2025.

Weather Situation

A trough extends across the Timor and Arafura Sea from a tropical low north of the Tiwi Islands. The tropical low will move towards the northeast across the Arafura Sea Tuesday evening and Wednesday. On Thursday it is likely to reach tropical cyclone strength and start moving south then southwest, towards the Top End coast.

Forecast for Tuesday until midnight

Winds
Easterly 10 to 15 knots.
Seas
Around 1 metre.
Swell
Below 0.5 metres.
Weather
Cloudy. The chance of a thunderstorm.

Wednesday 19 November

Winds
Easterly 15 to 20 knots.
Seas
1 to 1.5 metres.
Swell
Below 0.5 metres.
Weather
Partly cloudy. 70% chance of showers. The chance of a thunderstorm.

Thursday 20 November

Winds
Easterly 10 to 15 knots turning southeasterly 15 to 20 knots early in the morning.
Seas
Around 1 metre.
Swell
Below 0.5 metres.
Weather
Partly cloudy. 50% chance of showers. The chance of a thunderstorm in the afternoon and evening.

Friday 21 November

Winds
Above 48 knots possible depending on movement and development of Tropical Low.
Waves
Seas and swell exceeding 6m.
Weather
Cloudy. 80% chance of showers. The chance of a thunderstorm in the afternoon and evening.

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 am CST Wednesday.

Product IDD11034