Sisters Bay Weather Forecast
- 6
- 9
Shower or two. Windy
- 6
- 13
Partly cloudy
- 9
- 15
Partly cloudy
- 7
- 11
Shower or two
- 6
- 12
Possible shower
- 6
- 14
Partly cloudy
- 8
- 14
Shower or two
Today 22 Aug South East
Cloudy. Very high chance of showers, becoming less likely in the afternoon. Snow falling above 800 metres. The chance of a thunderstorm in the far south in the early morning. Possible small hail in the south in the morning and afternoon. Damaging winds possible in the far south. Winds westerly 35 to 50 km/h decreasing to 20 to 30 km/h in the late evening. Daytime maximum temperatures between 7 and 12.
Lower East Coastal Waters
Wineglass Bay to Tasman Island- Wind
- Northwesterly 20 to 30 knots turning west to southwesterly during the morning. Winds reaching up to 40 knots during the day.
- Seas
- 2 to 3 metres, increasing to 3 to 4 metres during the morning, then decreasing to 2 to 3 metres by early evening.
- 1st Swell
- Southwesterly 2 to 3 metres, increasing to 3 to 5 metres during the morning.
- Weather
- Partly cloudy. 80% chance of showers, with possible small hail near Tasman Island during the morning and afternoon.
- Weather Situation
- A cold front embedded in a vigorous westerly stream will approach and cross Tasmania this morning, with high pressure system to build to the north of the state and extend a ridge over Tasmania in the evening. The high will move slowly move to the north of Tasmania on Sunday and over the northern Tasman Sea by Sunday evening, with another cold front to approach and cross the state on Monday. On Tuesday a ridge of high pressure is expected to extend over Tasmania, with a low pressure system to move from central Australia over southern New South Wales.
Sisters Bay Temperature Statistics View More
August Temperature
Tasman Island (31km)
Lowest 15 August, 2026
6.1 °CAverage August
10 °CHighest 20 August, 2026
17.1 °C
Climate (2021–2026)
Tasman Island (31km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
11.6 °CAverage High 2021–2026
14.6 °C