Cascades Bay Weather Forecast
- 12
- 17
Clear
- 8
- 26
Becoming windy. Sunny
- 7
- 14
Shower or two. Becoming windy
- 8
- 15
Mostly sunny
- 8
- 16
Partly cloudy
- 9
- 18
Partly cloudy
- 11
- 20
Shower or two
Today 19 Sep South East
Mostly clear. Winds westerly 20 to 30 km/h turning north to northwesterly 15 to 20 km/h in the evening.
Frederick Henry Bay and Norfolk Bay Boating
- Wind
- Southwesterly 15 to 20 knots becoming variable about 10 knots in the evening.
- Seas
- Around 1 metre, decreasing below 0.5 metres later in the evening.
- Weather
- Clear.
- Weather Situation
- A high to the north of Tasmania will extend of a weak ridge over Tasmania evening, with a warm northwesterly stream expected on Sunday ahead of a cold front to cross the state in the evening. The flow will tend colder southwesterly on Monday morning, with a high to establish over the Bight later Monday. This high is expected to move to the north of Tasmania on Tuesday morning and lie over the northern Tasman Sea during Wednesday.
Cascades Bay Temperature Statistics View More
September Temperature
Tasman Island (25km)
Lowest 16 September, 2026
3.4 °CAverage September
10.5 °CHighest 14 September, 2026
19.9 °C
Climate (2021–2026)
Tasman Island (25km)
Average Low 2021–2026
9.4 °CAverage 2021–2026
11.6 °CAverage High 2021–2026
14.6 °C