Granite Island Weather Forecast

    • 11
    • 17

    Cloudy

    • 8
    • 19

    Partly cloudy

    • 8
    • 20

    Mostly sunny

    • 11
    • 21

    Cloudy

    • 11
    • 21

    Shower or two

    • 12
    • 23

    Showers

    • 11
    • 21

    Showers

Today 10 May Mount Lofty Ranges

Cloudy. Slight chance of a shower, most likely in the morning. Light winds. Overnight temperatures falling to around 10 with daytime temperatures reaching between 15 and 18.

South Central Coastal Waters

Wind
Southeasterly about 10 knots increasing to 10 to 15 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
South to southwesterly 2 to 2.5 metres.
Weather
Cloudy. 60% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

May Temperature

Encounter Bay (2km)

  • Lowest 5 May, 2026

    11.5 °C

  • Average May

    16.7 °C

  • Highest 1 May, 2026

    29.7 °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

    20.7 °C
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