Waterfall Bay (Port Arthur) Weather Forecast

    • 9
    • 19

    Possible shower

    • 10
    • 17

    Cloud clearing

    • 12
    • 22

    Partly cloudy

    • 15
    • 23

    Partly cloudy

    • 14
    • 21

    Partly cloudy

    • 14
    • 21

    Shower or two

    • 13
    • 20

    Showers easing

Today 28 Apr South East

Cloudy. High chance of showers in the far south, medium chance elsewhere. Winds west to northwesterly 25 to 40 km/h.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Northwesterly 20 to 30 knots turning westerly 25 to 30 knots in the late evening. Winds reaching up to 35 knots offshore in the late evening.
Seas
2 to 3 metres.
1st Swell
West to southwesterly 2 to 3 metres inshore, increasing to 3 to 4 metres offshore.
Weather
Cloudy. 80% chance of showers.
Weather Situation
A near-stationary high-pressure system over the Tasman Sea extends a ridge across Tasmania, directing a mostly west to northwesterly flow over the State until the end of the week. Fresh northwesterly winds ahead of an approaching cold front that is expected to clip southern Tasmania tonight and early Wednesday. Lighter winds during Wednesday as a weak high pressure system crosses the State, then warm north to northwesterly flow persisting until later in the weekend as a stronger, slow-moving cold front builds over the Bight, expected to move over Tasmania early next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Waterfall Bay (Port Arthur) Temperature Statistics View More

April Temperature

Tasman Island (15km)

  • Lowest 13 April, 2026

    5.8 °C

  • Average April

    12.6 °C

  • Highest 24 April, 2026

    22.9 °C

Climate (2021–Present)

Tasman Island (15km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    11.5 °C

  • Average High 2021–2026

    14.5 °C
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