Grassy Bay Weather Forecast

    • 13
    • 20

    Showers increasing. Windy

    • 10
    • 15

    Showers. Very windy

    • 7
    • 14

    Showers easing. Wind easing

    • 8
    • 17

    Shower or two

    • 10
    • 16

    Showers. Windy

    • 6
    • 13

    Showers. Windy

    • 6
    • 13

    Showers. Windy

Today 15 Sep King Island

Partly cloudy. High chance of showers, most likely late this afternoon and evening. Winds northerly 25 to 40 km/h turning northwesterly in the early afternoon. Daytime maximum temperatures in the low 20s.

Far Northwest Coastal Waters

Sandy Cape to Stanley including King Island
Wind
Northerly 25 to 30 knots turning northwesterly 20 to 30 knots in the late afternoon.
Seas
2.5 to 3 metres, increasing to 3 to 4 metres south 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. 70% chance of showers.
Weather Situation
A series of troughs and cold fronts expected to cross the state during today and Tuesday. A high pressure system over mainland Australia directs a westerly airstream over Tasmania on Wednesday, ahead of another cold front approaching from the west on Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grassy Bay Temperature Statistics View More

September Temperature

King Island Airport (25km)

  • Lowest 6 September, 2025

    4.8 °C

  • Average September

    11.5 °C

  • Highest 7 September, 2025

    17.3 °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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