Granite Island Weather Forecast

    • 13
    • 22

    Partly cloudy

    • 13
    • 24

    Mostly sunny

    • 13
    • 31

    Sunny

    • 16
    • 32

    Sunny

    • 17
    • 35

    Sunny

    • 19
    • 35

    Mostly sunny

    • 15
    • 25

    Partly cloudy

Today 30 Jan Mount Lofty Ranges

Partly cloudy. Winds south to southeasterly 20 to 30 km/h. Daytime maximum temperatures 22 to 27.

South Central Coastal Waters

Wind
Southerly 10 to 15 knots, reaching up to 20 knots inshore in the evening.
Seas
Around 1 metre, increasing to 1 to 1.5 metres inshore by early evening.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Partly cloudy.
Weather Situation
A high pressure system is centred over the Bight and will persist there until late in the week when it will move over the Tasman Sea. A low pressure trough will develop over the eastern states on Friday and may extend westwards over eastern SA at times over the following few days. Another high pressure system will move across waters south of the Bight mid next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

January Temperature

Encounter Bay (2km)

  • Lowest 3 January, 2025

    8.9 °C

  • Average January

    20.5 °C

  • Highest 27 January, 2025

    36.3 °C

Climate (2020–Present)

Encounter Bay (2km)

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  • Average Low 2020–2025

    10.2 °C

  • Average 2020–2025

    14.9 °C

  • Average High 2020–2025

    20.3 °C
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