Port Arthur Jetty Weather Forecast

    • 13
    • 19

    Shower or two

    • 13
    • 17

    Possible shower

    • 10
    • 17

    Partly cloudy

    • 10
    • 16

    Partly cloudy

    • 10
    • 17

    Mostly sunny

    • 11
    • 18

    Partly cloudy

    • 10
    • 17

    Shower or two

Today 17 May South East

Cloudy. Very high chance of showers, most likely in the afternoon and evening. Winds north to northwesterly 15 to 25 km/h becoming light in the morning. Overnight temperatures falling to between 9 and 13 with daytime temperatures reaching between 13 and 18.

South East Coastal Waters

Tasman Island to South East Cape
Wind
Northerly 10 to 15 knots, reaching up to 20 knots offshore during the morning. Winds becoming variable about 10 knots in the middle of the day.
Seas
1 to 2 metres, decreasing to 1 metre around midday.
1st Swell
West to southwesterly 2 to 2.5 metres.
Weather
Cloudy. 80% chance of showers.
Weather Situation
A slow moving high pressure system near New Zealand is directing a mild north to northeasterly airstream over Tasmania. A trough is expected to slowly move eastwards across Tasmania during today and Monday. A weak cold front is then forecast to approach the west during Monday, and cross over the state on Tuesday.
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

    13.1 °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

    14.5 °C
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