Grassy Harbour Weather Forecast

    • 12
    • 26

    Morning fog

    • 13
    • 22

    Possible shower

    • 12
    • 17

    Cloudy

    • 10
    • 18

    Showers

    • 11
    • 18

    Shower or two

    • 11
    • 17

    Shower or two. Becoming windy

    • 11
    • 17

    Shower or two. Windy

Today 18 Dec King Island

Mostly sunny. Patchy morning fog. Slight chance of a shower in the late afternoon and evening. The chance of a thunderstorm at night. Winds northerly 15 to 20 km/h becoming light in the morning. Daytime maximum temperatures in the mid to high 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 1 to 1.5 metres.
Weather
Mostly sunny morning. The chance of a thunderstorm offshore at night.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grassy Harbour Temperature Statistics View More

December Temperature

King Island Airport (25km)

  • Lowest 10 December, 2025

    4.4 °C

  • Average December

    13.7 °C

  • Highest 12 December, 2025

    24.7 °C

Climate (2020–Present)

King Island Airport (25km)

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  • Average Low 2020–2025

    10.1 °C

  • Average 2020–2025

    13.5 °C

  • Average High 2020–2025

    17.5 °C
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