Granite Island Weather Forecast

    • 14
    • 19

    Mostly clear

    • 13
    • 21

    Mostly sunny

    • 15
    • 23

    Sunny

    • 15
    • 29

    Sunny

    • 18
    • 34

    Mostly sunny

    • 22
    • 30

    Shower or two

    • 14
    • 23

    Partly cloudy

Today 12 Feb Mount Lofty Ranges

Clear. Winds southeasterly 25 to 35 km/h.

South Central Coastal Waters

Wind
Southeasterly 15 to 20 knots, reaching up to 25 knots inshore.
Seas
1 to 1.5 metres, increasing to 1.5 to 2 metres inshore.
1st Swell
Southwesterly 4 metres.
Weather
Cloudy.
Weather Situation
A ridge of high pressure building over southern parts of SA, continues to push an inland trough to the far northeast this evening. The ridge extends throughout the state by Friday, persisting through the weekend. A trough moves into the far west on Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

February Temperature

Encounter Bay (2km)

  • Lowest 3 February, 2026

    7.1 °C

  • Average February

    18.5 °C

  • Highest 3 February, 2026

    29 °C

Climate (2021–Present)

Encounter Bay (2km)

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  • Average Low 2021–2026

    10.4 °C

  • Average 2021–2026

    15.2 °C

  • Average High 2021–2026

    20.7 °C
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