Port Arthur Weather Forecast
- 7
- 12
Partly cloudy
- 8
- 12
Shower or two
- 6
- 13
Showers
- 7
- 13
Shower or two
- 9
- 16
Showers increasing
- 6
- 10
Shower or two
- 6
- 12
Shower or two
Today 9 Jul South East
Partly cloudy. Winds northerly 15 to 25 km/h.
South East Coastal Waters
Tasman Island to South East Cape- Wind
- Northerly 15 to 20 knots, reaching up to 25 knots near Tasman Island in the late evening.
- Seas
- 1 to 1.5 metres, increasing to 1 to 2 metres offshore.
- 1st Swell
- West to southwesterly 4 to 5 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A cold front approaching from the west is forecast to cross Tasmania during Thursday morning. A southwesterly flow will develop over the state on Thursday afternoon and evening, before a second cold front is forecast to brush the south and west of the state during Friday. A high pressure system over mainland Australia is expected to extend a ridge over Tasmania early Saturday, with a northwesterly stream to develop on Saturday afternoon.
Port Arthur Temperature Statistics View More
July Temperature
Tasman Island (16km)
Lowest 4 July, 2025
6.6 °CAverage July
9.7 °CHighest 6 July, 2025
13.9 °C
Climate (2020–Present)
Tasman Island (16km)
Average Low 2020–2025
9.4 °CAverage 2020–2025
11.5 °CAverage High 2020–2025
14.6 °C