Granite Island Weather Forecast

    • 7
    • 17

    Cloud clearing

    • 5
    • 20

    Cloud clearing

    • 9
    • 21

    Shower or two. Wind easing

    • 9
    • 17

    Possible shower

    • 10
    • 18

    Shower or two

    • 9
    • 20

    Shower or two

    • 10
    • 17

    Shower or two

Today 30 Aug Mount Lofty Ranges

Cloud clearing. Patchy morning fog on the eastern slopes. Light winds. Daytime maximum temperatures around 17.

South Central Coastal Waters

Wind
East to southeasterly about 10 knots.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 metres, increasing to 2 to 3 metres during the morning.
Weather
Mostly sunny.
Weather Situation
A high pressure system south of SA continues extending a ridge across the state, as it moves slowly east over the weekend, to be centred over Victoria by Monday. A cold front is then forecast to move across the state on Tuesday, as another ridge and high quickly push in behind the front on Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

August Temperature

Encounter Bay (2km)

  • Lowest 1 August, 2026

    0.5 °C

  • Average August

    12.4 °C

  • Highest 18 August, 2026

    20.3 °C

Climate (2021–2026)

Encounter Bay (2km)

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  • Average Low 2021–2026

    10.5 °C

  • Average 2021–2026

    15.3 °C

  • Average High 2021–2026

    20.7 °C
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