Treachery Beach Weather Forecast

Hunter Coastal Waters

Wind

North to northeasterly 15 to 20 knots, reaching up to 25 knots offshore south of Norah Head in the late evening.

Seas

1 to 1.5 metres, increasing to 1.5 to 2 metres offshore south of Norah Head.

1st Swell

Easterly below 1 metre.

Weather

Partly cloudy.

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 on Wednesday and weakens. Then, another trough looks set to cross the southern half of the coast on Friday and stalls 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.