Cape Portland Weather Forecast
- 11
- 19
Shower
- 10
- 19
Windy
- 11
- 19
Windy
- 8
- 19
Windy
- 6
- 19
Partly cloudy
- 8
- 20
Partly cloudy
- 10
- 23
Partly cloudy
Today 22 Dec North East
Partly cloudy. Medium chance of showers, most likely later tonight. Winds westerly 25 to 40 km/h decreasing to 20 to 30 km/h in the evening.
Banks Strait and Franklin
- Wind
- Westerly 20 to 30 knots.
- Seas
- 2 to 2.5 metres.
- 1st Swell
- Southeast to southwesterly below 1 metre.
- Weather
- Partly cloudy.
- Weather Situation
- A ridge of high pressure across the mainland, directs a west to southwesterly flow over Tasmania until Thursday. Cold fronts embedded in this flow are expected to cross late this evening and again on Wednesday. The high pressure system then slowly moves over the state from Friday.
Cape Portland Temperature Statistics View More
December Temperature
Swan Island (12km)
Lowest 2 December, 2025
8.3 °CAverage December
15 °CHighest 13 December, 2025
24.2 °C
Climate (2020–Present)
Swan Island (12km)
Average Low 2020–2025
11.9 °CAverage 2020–2025
14.3 °CAverage High 2020–2025
17.5 °C