Marsden Head Weather Forecast

Illawarra Coastal Waters

Wind

North to northwesterly 10 to 15 knots tending north to northeasterly in the middle of the day. Winds reaching up to 20 knots offshore in the evening.

Seas

1 to 1.5 metres, decreasing below 1 metre during the morning, then increasing to 1 to 1.5 metres by early evening.

1st Swell

Northeasterly around 1 metre.

Weather

Partly cloudy. The chance of a thunderstorm during the morning and afternoon.

Weather Situation

A slow-moving high pressure system over the Tasman Sea extends a ridge to the state's east, maintaining fresh northeasterly airstream over coastal waters. The ridge is forecast to persist over the north coast through the week while a trough brushes the south coast early today then weakens. Then, another trough is expected to cross the southern half of the coast on Friday, stalling about the central part of the coast. This will be followed by the second high pressure system passing to the south, maintaining onshore easterly airstream later in the week.