Waterfall Bay (Port Arthur) Weather Forecast

    • 11
    • 28

    Mostly sunny

    • 15
    • 29

    Showers developing

    • 12
    • 19

    Showers increasing

    • 10
    • 16

    Showers

    • 8
    • 15

    Showers

    • 7
    • 17

    Cloudy

    • 10
    • 17

    Shower or two

Today 22 Oct South East

Partly cloudy. The chance of fog early this morning. Slight chance of a shower in the far south this afternoon. Near zero chance of rain elsewhere. Winds north to northeasterly 15 to 20 km/h tending north to northwesterly 25 to 35 km/h in the early morning. Daytime maximum temperatures 25 to 30.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Northeasterly 15 to 20 knots turning northerly 15 to 25 knots during the day. Winds reaching up to 30 knots offshore in the evening.
Seas
Below 1 metre, increasing to 1 to 2 metres during the morning.
1st Swell
Southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore.
Weather
Mostly sunny.
Weather Situation
A slow moving high over the Tasman Sea directs a warm northwesterly flow over Tasmania this week. A weak trough lingers over the state today and tomorrow. A stronger trough is expected to move over Tasmania on Friday, with a cold front following Saturday evening. Another trough is forecast to develop off the east coast on Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Waterfall Bay (Port Arthur) Temperature Statistics View More

October Temperature

Tasman Island (15 km)

  • Lowest 13 October, 2026

    4 °C

  • Average October

    11.7 °C

  • Highest 20 October, 2026

    22 °C

Climate (2021–2026)

Tasman Island (15 km)

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  • Average Low 2021–2026

    9.4 °C

  • Average 2021–2026

    11.6 °C

  • Average High 2021–2026

    14.7 °C
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