Cape Portland Weather Forecast
- 8
- 14
Windy
- 6
- 14
Cloudy
- 9
- 15
Shower
- 8
- 15
Shower
- 6
- 16
Partly cloudy
- 7
- 15
Partly cloudy
- 7
- 16
Shower
Today 22 Aug North East
Mostly sunny. Winds westerly 25 to 40 km/h decreasing to 15 to 25 km/h in the evening.
Banks Strait and Franklin
- Wind
- Westerly 20 to 30 knots, reaching up to 35 knots in the late morning. Winds decreasing to 20 to 25 knots in the evening.
- Seas
- 2 to 3 metres, decreasing to 1.5 to 2 metres later in the evening.
- 1st Swell
- Northwest to southwesterly 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres by early evening.
- Weather
- Mostly sunny.
- 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.
Cape Portland Temperature Statistics View More
August Temperature
Swan Island (12km)
Lowest 7 August, 2026
7 °CAverage August
12 °CHighest 19 August, 2026
16.7 °C
Climate (2021–2026)
Swan Island (12km)
Average Low 2021–2026
12 °CAverage 2021–2026
14.4 °CAverage High 2021–2026
17.5 °C