Waterfall Bay (Port Arthur) Weather Forecast

    • 10
    • 17

    Partly cloudy

    • 12
    • 18

    Partly cloudy

    • 12
    • 17

    Showers

    • 11
    • 17

    Shower or two

    • 12
    • 18

    Shower or two

    • 13
    • 18

    Shower or two

    • 13
    • 18

    Showers

Today 23 May South East

Partly cloudy. Winds northwest to northeasterly 15 to 20 km/h. Overnight temperatures falling to between 4 and 9 with daytime temperatures reaching between 13 and 17.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Northeasterly 10 to 15 knots turning northerly 15 to 20 knots during the morning.
Seas
Around 1 metre, increasing to 1 to 1.5 metres offshore.
1st Swell
Southwesterly 3 to 4 metres, decreasing to 2 to 3 metres during the morning.
Weather
Partly cloudy.
Weather Situation
A high pressure centre lies to the east of Tasmania, extending a ridge over the state. The ridge is then expected to slowly move eastwards during today as a cold front approaches from the west, nearing the west coast later Sunday. A low pressure centre is expected to develop on the front to the northwest of Tasmania later Sunday and during Monday, directing a trough over the state on Monday. The low centre is then expected to move over the southeast mainland on Monday and Tuesday, directing an easterly airstream over Tasmania.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Waterfall Bay (Port Arthur) Temperature Statistics View More

May Temperature

Tasman Island (15km)

  • Lowest 8 May, 2026

    4.7 °C

  • Average May

    12.6 °C

  • Highest 1 May, 2026

    21.4 °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

    14.6 °C
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