Trefoil Island Weather Forecast

    • 15
    • 15

    Rain

    • 11
    • 14

    Shower

    • 9
    • 12

    Shower

    • 6
    • 12

    Partly cloudy

    • 9
    • 13

    Shower

    • 9
    • 12

    Shower

    • 8
    • 12

    Shower

Today 18 Jun North West Coast

Cloudy. Very high chance of rain. Winds northerly 20 to 30 km/h turning northwesterly in the evening.

Far Northwest Coastal Waters

Sandy Cape to Stanley including King Island
Wind
Northerly 20 to 25 knots tending northwesterly 15 to 25 knots in the late afternoon. Winds reaching up to 30 knots offshore in the evening.
Seas
1.5 to 2 metres.
1st Swell
Southwesterly around 1 metre, increasing to 1.5 metres south of King Island.
Weather
Cloudy. 95% chance of rain.
Weather Situation
A low pressure system developing in the Bight, brings a relatively warm and humid northerly airstream across Tasmania. The low centre will approach from the west on Thursday, slip to the south and extend an associated cold front over the state on Friday. A much cooler south to southwesterly airstream is expected to follow the cold front, with a ridge of high pressure forecast to develop over the state through the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Trefoil Island Temperature Statistics View More

June Temperature

Marrawah (30km)

  • Lowest 15 June, 2026

    6 °C

  • Average June

    11.9 °C

  • Highest 8 June, 2026

    16.2 °C

Climate (2021–2026)

Marrawah (30km)

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  • Average Low 2021–2026

    9.8 °C

  • Average 2021–2026

    12.6 °C

  • Average High 2021–2026

    17.1 °C
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