Granite Island Weather Forecast

    • 7
    • 21

    Shower or two developing

    • 10
    • 18

    Shower or two. Windy

    • 6
    • 13

    Showers

    • 6
    • 15

    Shower or two. Wind easing

    • 6
    • 15

    Cloudy

    • 5
    • 16

    Partly cloudy

    • 3
    • 16

    Mostly sunny

Today 22 Jun Mount Lofty Ranges

Sunny morning. Medium chance of showers, most likely in the late afternoon and evening. Winds northerly 25 to 35 km/h. Overnight temperatures falling to between 7 and 10 with daytime temperatures reaching between 18 and 21.

South Central Coastal Waters

Wind
North to northeasterly 20 to 25 knots tending north to northwesterly 20 to 30 knots during the day. Winds reaching up to 35 knots west of Kangaroo Island in the late evening.
Seas
1 to 2 metres, increasing to 2 to 3 metres during the morning.
1st Swell
Southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres west of Kangaroo Island by early evening.
Weather
Partly cloudy. 80% chance of showers. The chance of a thunderstorm from the late morning, possibly severe.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

June Temperature

Encounter Bay (2km)

  • Lowest 21 June, 2025

    1.8 °C

  • Average June

    11 °C

  • Highest 2 June, 2025

    20.5 °C

Climate (2020–Present)

Encounter Bay (2km)

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  • Average Low 2020–2025

    10.3 °C

  • Average 2020–2025

    15 °C

  • Average High 2020–2025

    20.5 °C
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