Granite Island Weather Forecast

    • 11
    • 18

    Showers. Windy

    • 11
    • 19

    Showers

    • 9
    • 18

    Possible shower

    • 8
    • 19

    Showers increasing

    • 8
    • 14

    Shower or two

    • 9
    • 17

    Showers

    • 10
    • 18

    Shower or two

Today 3 May Mount Lofty Ranges

Cloudy. Very high chance of showers. The chance of a thunderstorm about the southern Fleurieu Peninsula in the morning and afternoon. Winds northwesterly 30 to 45 km/h. Overnight temperatures falling to between 9 and 12 with daytime temperatures reaching between 15 and 18.

South Central Coastal Waters

Wind
Northwesterly 25 to 35 knots turning westerly 25 to 30 knots during the afternoon and evening.
Seas
2 to 4 metres.
1st Swell
Westerly 4 to 6 metres.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

May Temperature

Encounter Bay (2km)

  • Lowest 1 May, 2026

    12.9 °C

  • Average May

    23.2 °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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