New South Wales

Synoptic Situation: A cold front is moving along southern and central parts of the New South Wales coast today, bringing a gusty southerly change, which will continue to the north overnight. Within this system, a low is forecast to develop offshore during Tuesday, while a high strengthens over the southern Tasman Sea. This will further reinforce southerly winds along much of the coast, likely reaching gale force in some areas depending on the position and depth of the low. The low should weaken during Wednesday and Thursday as the high becomes dominant over the Tasman Sea, pushing a ridge into New South Wales, and bringing a gradual return to northeasterly winds. Another cold front looks set to arrive on the weekend.
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.

Byron Coast: Point Danger to Wooli

Monday 16 September

Winds: Northerly 10 to 15 knots, increasing to 15 to 25 knots south of Cape Byron during the day.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the day.
Swell 1: Southerly 1 to 1.5 metres.
Weather: Sunny.

Tuesday 17 September

Winds: North to northwesterly 15 to 25 knots shifting southerly 20 to 30 knots in the evening.
Seas: 1 to 2 metres.
Swell 1: Southerly 1 to 1.5 metres.
Swell 2: North to northeasterly around 1 metre.
Weather: Mostly sunny morning. 80% chance of showers in the afternoon and evening. The chance of a thunderstorm.

Wednesday 18 September

Winds: South to southwesterly 15 to 25 knots becoming variable about 10 knots during the morning then becoming east to northeasterly 10 to 15 knots during the afternoon.
Seas: 1 to 2 metres, decreasing below 1 metre during the afternoon.
Swell 1: Southerly 1 to 1.5 metres, increasing to 1.5 to 2.5 metres during the morning.
Swell 2: North to northeasterly 1 to 1.5 metres, decreasing below 1 metre during the afternoon or evening.
Weather: Partly cloudy. 50% chance of showers.