Granite Island Weather Forecast

    • 7
    • 17

    Partly cloudy

    • 10
    • 15

    Showers

    • 7
    • 15

    Shower or two

    • 5
    • 14

    Possible shower

    • 3
    • 15

    Cloudy

    • 4
    • 15

    Partly cloudy

    • 4
    • 15

    Possible shower

Today 27 Jul Mount Lofty Ranges

Partly cloudy. Medium chance of showers about the southern Fleurieu Peninsula, most likely later tonight. Near zero chance of rain elsewhere. Winds northwesterly 25 to 35 km/h.

South Central Coastal Waters

Wind
Northwesterly 25 to 30 knots turning westerly 20 to 30 knots in the evening.
Seas
2.5 to 3 metres.
1st Swell
Westerly 2.5 to 4 metres.
Weather
Cloudy. 80% chance of showers. The chance of a thunderstorm early this evening.
Weather Situation
A cold front will continue to move over western and southern South Australia Monday evening before pushing across the remainder of the state on Tuesday. A secondary front clips the far southeast Tuesday afternoon and evening before a high pressure system moves over the Bight from Wednesday. The high will extend a ridge across the state, as it slowly moves east into NSW by Saturday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

July Temperature

Encounter Bay (2km)

  • Lowest 19 July, 2026

    0.1 °C

  • Average July

    10.2 °C

  • Highest 18 July, 2026

    18.3 °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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