Waterfall Bay (Port Arthur) Weather Forecast
- 15
- 21
Shower or two. Becoming windy
- 10
- 19
Morning shower or two
- 11
- 22
Partly cloudy
- 13
- 21
Partly cloudy
- 13
- 19
Shower or two
- 13
- 19
Shower or two
- 12
- 19
Shower or two
Today 10 Jan South East
Cloudy. High chance of showers, with possible small hail in the far south in the evening. The chance of a thunderstorm in the far south in the early afternoon. Damaging winds possible. Winds northwesterly 35 to 50 km/h turning southwesterly in the early afternoon then tending west to southwesterly 25 to 40 km/h in the evening. Daytime maximum temperatures between 14 and 21.
South East Coastal Waters
Tasman Island to South East Cape- Wind
- Westerly 20 to 30 knots turning southwesterly 25 to 30 knots in the early afternoon. Winds reaching up to 35 knots offshore in the early afternoon.
- Seas
- 2 to 3 metres.
- 1st Swell
- Westerly 1.5 to 2 metres, tending southwesterly 1 to 2 metres around midday, then decreasing to 1 to 1.5 metres by early evening.
- Weather
- Partly cloudy. 80% chance of showers, with possible small hail in the evening. The chance of a thunderstorm in the early afternoon.
- Weather Situation
- A strong cold front will cross over Tasmania early Saturday, followed by a post frontal trough in the afternoon. A ridge of high pressure will begin to develop from the west on Sunday, with multiple small high pressure centres crossing over the state in the following days. This broad ridge will persist over Tasmania into Tuesday.
Waterfall Bay (Port Arthur) Temperature Statistics View More
January Temperature
Tasman Island (15km)
Lowest 1 January, 2026
9.9 °CAverage January
14.1 °CHighest 6 January, 2026
20.3 °C
Climate (2021–Present)
Tasman Island (15km)
Average Low 2021–2026
9.3 °CAverage 2021–2026
11.5 °CAverage High 2021–2026
14.5 °C