Halfmoon Bay Weather Forecast

    • 9
    • 13

    Mostly clear

    • 5
    • 15

    Partly cloudy

    • 6
    • 17

    Sunny

    • 9
    • 20

    Possible late shower

    • 13
    • 18

    Shower or two

    • 11
    • 15

    Shower or two

    • 9
    • 16

    Cloudy

Today 21 Sep King Island

Mostly clear. Winds southwesterly 20 to 30 km/h becoming light in the late evening.

Far Northwest Coastal Waters

Sandy Cape to Stanley including King Island
Wind
Southwesterly 15 to 20 knots, reaching up to 25 knots east of King Island in the late afternoon.
Seas
1 to 2 metres.
1st Swell
Southwesterly 3 to 5 metres.
Weather
Mostly clear.
Weather Situation
A high pressure system centred over the Bight is expected to move to the north of Tasmania on Tuesday morning and lie over the northern Tasman Sea during Wednesday and Thursday, maintaining ridge dominated conditions over Tasmania. A trough is forecast to move over the state from the west during Friday ahead of a cold front to cross later.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Halfmoon Bay Temperature Statistics View More

September Temperature

King Island Airport (8km)

  • Lowest 12 September, 2026

    2.6 °C

  • Average September

    12.1 °C

  • Highest 13 September, 2026

    21.8 °C

Climate (2021–2026)

King Island Airport (8km)

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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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