Synoptic Situation: A stationary high near New Zealand directs a fresh and gusty northeasterly airstream over eastern Tasmania, while a low close to the west of Tasmania will track along the south coast this evening, resulting in a cooler westerly flow which will be very strong and gusty over the south. As the low moves away to the southeast early Sunday, a weak ridge of high pressure will drift over the state, followed by a weak low and cold front early Monday morning. Cooler, though light southwesterly winds will then extend over Tasmania as a new high pressure system enters the Bight. A cold front, embedded in a west to southwesterly stream is expected to cross during Tuesday.
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.

South East Coast: Tasman Island to South East Cape

Saturday 21 September

Winds: Northerly 25 to 30 knots turning west to northwesterly 35 to 45 knots in the late evening. Winds reaching up to 50 knots in the late evening.
Seas: 2 to 3 metres, increasing to 2 to 4 metres offshore.
Swell 1: Southwesterly 2 to 3 metres.
Swell 2: Northeasterly 2 to 3 metres.
Weather: Partly cloudy. 50% chance of showers. The chance of a thunderstorm.

Sunday 22 September

Winds: Westerly 20 to 30 knots, reaching up to 45 knots early in the morning. Winds decreasing to 15 to 25 knots in the early afternoon.
Seas: 3 to 5 metres, decreasing to 2 to 3 metres during the morning.
Swell 1: Southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.
Swell 2: Northeasterly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres around midday.
Weather: Partly cloudy. 80% chance of showers.

Monday 23 September

Winds: West to southwesterly 15 to 25 knots.
Seas: 1 to 1.5 metres, increasing to 1.5 to 2 metres during the afternoon.
Swell 1: Southwesterly 2 to 3 metres, tending southerly 2 to 2.5 metres later in the evening.
Swell 2: Northeasterly around 1 metre.
Weather: Partly cloudy. 60% chance of showers.

Tuesday 24 September

Winds: Westerly 25 to 30 knots turning southwesterly 20 to 30 knots during the day.
Seas: 1 to 2 metres, increasing to 2 to 3 metres offshore.
Swell 1: Southerly 2 to 2.5 metres, tending southwesterly 2 to 2.5 metres during the morning.
Weather: Cloudy. 80% chance of showers.