Grassy Harbour Weather Forecast

    • 10
    • 13

    Wind easing. Cloudy

    • 9
    • 13

    Shower or two

    • 7
    • 14

    Showers increasing

    • 9
    • 14

    Showers easing

    • 8
    • 12

    Possible shower

    • 8
    • 13

    Cloudy

    • 7
    • 15

    Partly cloudy

Today 20 Jun King Island

Cloudy. Slight chance of a shower, becoming less likely this morning. Winds southerly 30 to 45 km/h decreasing to 15 to 20 km/h in the evening. Daytime maximum temperatures around 13.

Far Northwest Coastal Waters

Sandy Cape to Stanley including King Island
Wind
Southerly 15 to 25 knots, reaching up to 30 knots during the morning. Winds decreasing to 10 to 15 knots in the evening.
Seas
2 to 3 metres, decreasing to 1 to 1.5 metres around midday, then decreasing to 1 metre by early evening.
1st Swell
Southwesterly 2 to 3 metres, increasing to 3 to 4 metres south of King Island.
Weather
Cloudy.
Weather Situation
A cooler south to southwesterly airstream is expected on Saturday with a ridge of high pressure forecast to develop over the state through the weekend. A warmer northwesterly airstream is then expected to develop during Monday as the ridge gradually moves to the east and a cold front approaches from the west. The cold front is expected to move over Tasmania on Tuesday resulting in a return to cooler southerly flow.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grassy Harbour Temperature Statistics View More

June Temperature

King Island Airport (25km)

  • Lowest 15 June, 2026

    3.6 °C

  • Average June

    13 °C

  • Highest 17 June, 2026

    19.1 °C

Climate (2021–2026)

King Island Airport (25km)

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  • Average Low 2021–2026

    10.2 °C

  • Average 2021–2026

    13.6 °C

  • Average High 2021–2026

    17.6 °C
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