Sisters Bay Weather Forecast
- 7
- 14
Mostly clear
- 8
- 16
Shower or two
- 7
- 13
Partly cloudy
- 8
- 12
Showers. Windy
- 6
- 13
Shower or two
- 9
- 13
Showers
- 6
- 12
Shower or two
Today 31 Aug South East
Partly cloudy. Winds westerly 15 to 25 km/h turning northwesterly 15 to 20 km/h in the evening. Daytime maximum temperatures between 12 and 17.
Lower East Coastal Waters
Wineglass Bay to Tasman Island- Wind
- West to southwesterly 10 to 15 knots, reaching up to 25 knots offshore in the late morning. Winds tending northwest to northeasterly in the early afternoon.
- Seas
- 1 to 2 metres, decreasing to 1 metre during the afternoon.
- 1st Swell
- South to southwesterly 1 to 2 metres inshore, increasing to 2.5 to 4 metres offshore.
- Weather
- Partly cloudy.
- Weather Situation
- A high pressure ridge extends over the southern mainland maintaining a westerly flow over Tasmania today, before the high centre drifts into the Tasman Sea later tonight. A cold front is expected to approach from the west and cross Tasmania on Tuesday, followed by persistent westerly flow for the remainder of the week. A cold front embedded in the westerly flow is forecast to cross during Thursday.
Sisters Bay Temperature Statistics View More
August Temperature
Tasman Island (31km)
Lowest 23 August, 2026
6 °CAverage August
10.1 °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