Port Arthur Jetty Weather Forecast

    • 9
    • 16

    Partly cloudy

    • 9
    • 17

    Mostly sunny

    • 11
    • 18

    Partly cloudy

    • 12
    • 18

    Possible shower

    • 10
    • 15

    Showers

    • 9
    • 16

    Possible shower

    • 9
    • 17

    Shower or two

Today 21 May South East

Partly cloudy. Winds northwesterly 15 to 20 km/h. Daytime maximum temperatures between 12 and 16.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Westerly 15 to 20 knots turning northwesterly in the morning. Winds reaching up to 25 knots offshore during the afternoon and evening.
Seas
1 to 2 metres.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy.
Weather Situation
A high pressure centre near Adelaide extends a ridge of high pressure over Tasmania. The ridge is expected to slowly cross over Tasmania during Thursday and Friday, bringing mostly settled weather to the state. The high is then forecast to move to the east of Tasmania later Friday as a cold front approaches from the west during Saturday, and crosses over the west later Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Port Arthur Jetty Temperature Statistics View More

May Temperature

Tasman Island (16km)

  • Lowest 8 May, 2026

    4.7 °C

  • Average May

    12.8 °C

  • Highest 1 May, 2026

    21.4 °C

Climate (2021–Present)

Tasman Island (16km)

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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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