Granite Island Weather Forecast

    • 11
    • 22

    Mostly clear

    • 14
    • 19

    Partly cloudy

    • 12
    • 22

    Mostly sunny

    • 13
    • 28

    Possible shower

    • 17
    • 27

    Shower or two

    • 15
    • 19

    Possible shower

    • 14
    • 28

    Partly cloudy

Today 2 Apr Mount Lofty Ranges

Mostly clear. Winds west to southwesterly 15 to 20 km/h turning south to southeasterly in the evening.

South Central Coastal Waters

Wind
West to southwesterly 10 to 15 knots turning southerly during the afternoon and evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system south of Western Australia extends a ridge over South Australia. The tail end of a cold front will brush the southeast corner of SA tonight. The high is forecast to move east on Friday to be southeast of Tasmania by Sunday allowing another weak front to brush over coastal parts of SA Sunday night and Monday. Another high pressure system is expected to follow early next week.
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 1 April, 2026

    13.9 °C

  • Average April

    16.9 °C

  • Highest

    –

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

    20.7 °C
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