Harbour Islets Weather Forecast

    • 12
    • 21

    Partly cloudy

    • 13
    • 18

    Shower

    • 12
    • 16

    Shower

    • 11
    • 16

    Shower

    • 11
    • 16

    Shower

    • 11
    • 15

    Shower

    • 11
    • 15

    Shower

Today 18 Dec North West Coast

Partly cloudy. Slight chance of a light shower in the afternoon and early evening. Light winds becoming west to northwesterly 15 to 20 km/h in the early afternoon then becoming light in the late evening. Daytime maximum temperatures in the low to mid 20s.

Far Northwest Coastal Waters

Sandy Cape to Stanley including King Island
Wind
Variable about 10 knots becoming northwest to northeasterly 10 to 15 knots in the early afternoon then becoming variable about 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly around 1 metre, increasing to 1.5 metres south of King Island.
Weather
Partly cloudy. The chance of a thunderstorm offshore later tonight.
Weather Situation
A trough approaches from the southwest today and is forecast to cross the state during this afternoon. A weak ridge is then expected to pass to the south on Friday, before a low pressure system moves over the state on Saturday, lingering about the east coast on Sunday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Harbour Islets 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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