Granite Island Weather Forecast

    • 10
    • 18

    Shower or two

    • 11
    • 18

    Shower or two

    • 10
    • 17

    Cloudy

    • 9
    • 17

    Cloudy

    • 8
    • 20

    Partly cloudy

    • 11
    • 22

    Possible shower

    • 11
    • 22

    Shower or two

Today 8 May Mount Lofty Ranges

Cloudy. Medium chance of showers, most likely in the late morning and afternoon. Winds southwesterly 20 to 30 km/h turning southerly 15 to 20 km/h in the afternoon. Daytime maximum temperatures between 15 and 18.

South Central Coastal Waters

Wind
Southwesterly 15 to 20 knots turning southerly 10 to 15 knots in the late morning and afternoon.
Seas
1 to 1.5 metres, decreasing to 1 metre by early evening.
1st Swell
Southwesterly 4 metres.
Weather
Cloudy. 70% chance of showers.
Weather Situation
A high pressure system south of Western Australia will move slowly eastwards south of the Bight during the next few days. The high will then move eastwards early next week to be centred southeast of Tasmania late Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

May Temperature

Encounter Bay (2km)

  • Lowest 5 May, 2026

    11.5 °C

  • Average May

    17.4 °C

  • Highest 1 May, 2026

    29.7 °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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