Trefoil Island Weather Forecast

    • 11
    • 15

    Cloudy

    • 9
    • 18

    Partly cloudy

    • 12
    • 22

    Partly cloudy

    • 13
    • 18

    Shower

    • 13
    • 17

    Shower

    • 12
    • 16

    Shower

    • 12
    • 16

    Shower

Today 16 Dec North West Coast

Partly cloudy. Winds southwesterly 20 to 30 km/h decreasing to 15 to 20 km/h in the late evening. Daytime maximum temperatures between 17 and 24.

Far Northwest Coastal Waters

Sandy Cape to Stanley including King Island
Wind
West to southwesterly 10 to 15 knots, reaching up to 20 knots east of King Island during the day. Winds becoming variable about 10 knots in the late evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres east of King Island.
1st Swell
Southwesterly 1.5 to 2.5 metres, increasing to 2.5 to 4 metres south of King Island.
Weather
Partly cloudy.
Weather Situation
A high pressure system to the northwest will cross through Bass Strait on Tuesday and will continue to extend a ridge over the state as the high settles in the Tasman Sea on Wednesday. A trough will cross over the state on Thursday with broad area of low pressure developing off the west coast on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Trefoil Island Temperature Statistics View More

December Temperature

Marrawah (30km)

  • Lowest 1 December, 2025

    7.3 °C

  • Average December

    12.9 °C

  • Highest 13 December, 2025

    19.8 °C

Climate (2020–Present)

Marrawah (30km)

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  • Average Low 2020–2025

    9.7 °C

  • Average 2020–2025

    12.6 °C

  • Average High 2020–2025

    17 °C
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