Granite Island Weather Forecast

    • 15
    • 19

    Possible shower

    • 10
    • 22

    Shower or two

    • 14
    • 23

    Showers

    • 13
    • 19

    Shower or two

    • 10
    • 17

    Possible shower

    • 11
    • 18

    Cloudy

    • 10
    • 18

    Partly cloudy

Today 7 Apr Mount Lofty Ranges

Partly cloudy. Medium chance of showers, most likely in the early morning. Winds southwesterly 15 to 25 km/h tending southeast to southwesterly 15 to 20 km/h in the morning then becoming light in the late evening. Overnight temperatures falling to around 14 with daytime temperatures reaching around 20.

South Central Coastal Waters

Wind
South to southwesterly 15 to 20 knots becoming variable about 10 knots in the middle of the day.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
1st Swell
Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning.
Weather
Cloudy.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

April Temperature

Encounter Bay (2km)

  • Lowest 2 April, 2026

    9.3 °C

  • Average April

    15.8 °C

  • Highest 5 April, 2026

    24.4 °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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