Granite Island Weather Forecast

    • 9
    • 16

    Showers increasing

    • 8
    • 15

    Showers

    • 8
    • 17

    Shower or two

    • 10
    • 18

    Shower or two

    • 8
    • 19

    Cloud clearing

    • 9
    • 19

    Partly cloudy

    • 11
    • 19

    Possible shower

Today 3 Jun Mount Lofty Ranges

Cloudy. Very high chance of showers, most likely in the afternoon and evening. Winds westerly 20 to 30 km/h decreasing to 15 to 20 km/h in the late afternoon. Overnight temperatures falling to around 9 with daytime temperatures reaching between 11 and 15.

South Central Coastal Waters

Wind
Southwesterly 15 to 25 knots, reaching up to 30 knots early in the morning.
Seas
2 to 3 metres, decreasing to 1 to 1.5 metres around midday.
1st Swell
Southerly 3 to 4 metres, decreasing to 2.5 to 3 metres during the morning.
Weather
Partly cloudy. 80% chance of showers. The chance of a thunderstorm west of Kangaroo Island in the late afternoon and evening.
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 2 June, 2026

    5.9 °C

  • Average June

    13.3 °C

  • Highest 1 June, 2026

    19.2 °C

Climate (2021–Present)

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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