Granite Island Weather Forecast

    • 11
    • 18

    Cloudy

    • 11
    • 19

    Cloudy

    • 9
    • 21

    Partly cloudy

    • 8
    • 22

    Mostly sunny

    • 10
    • 21

    Partly cloudy

    • 11
    • 19

    Partly cloudy

    • 9
    • 20

    Mostly sunny

Today 12 Apr Mount Lofty Ranges

Cloudy. Slight chance of a light shower. Winds southwesterly 15 to 25 km/h becoming light in the late evening.

South Central Coastal Waters

Wind
Southwesterly 15 to 20 knots.
Seas
1 to 1.5 metres, decreasing to 1 metre later in the evening.
1st Swell
Southerly 4 to 5 metres.
Weather
Cloudy.
Weather Situation
A high pressure system south of the Bight will move slowly northeast this week allowing a series of fronts to pass over the southeast on Wednesday and Thursday. A second high pressure system is expected to follow and become established well south of the Bight by Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

April Temperature

Encounter Bay (2km)

  • Lowest 8 April, 2026

    7 °C

  • Average April

    16 °C

  • Highest 6 April, 2026

    27.5 °C

Climate (2021–Present)

Encounter Bay (2km)

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  • Average Low 2021–2026

    10.5 °C

  • Average 2021–2026

    15.2 °C

  • Average High 2021–2026

    20.6 °C
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