Granite Island Weather Forecast

    • 14
    • 25

    Partly cloudy

    • 13
    • 19

    Partly cloudy

    • 10
    • 28

    Sunny

    • 16
    • 23

    Partly cloudy

    • 11
    • 26

    Mostly sunny

    • 15
    • 27

    Mostly sunny

    • 17
    • 26

    Possible shower

Today 19 Apr Mount Lofty Ranges

Partly cloudy. Winds west to southwesterly 15 to 25 km/h turning south to southeasterly 15 to 20 km/h in the evening.

South Central Coastal Waters

Wind
Southerly 10 to 15 knots turning southeasterly in the late evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres, increasing to 1 to 2 metres later in the evening.
Weather
Partly cloudy.
Weather Situation
A high pressure system centred west of Tasmania extends a ridge over western Victoria. A cold front over the far west of SA will weaken as it moves eastwards over central and eastern parts this morning. The high will move eastwards to be centred southeast of Tasmania later today but will continue to extend a ridge over SA early next week. Another front will move across the south of SA late Tuesday and early Wednesday then another high will move across waters to the south during Wednesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

April Temperature

Encounter Bay (2km)

  • Lowest 8 April, 2026

    7 °C
  • Average April

    16.1 °C
  • Highest 6 April, 2026

    27.5 °C

Climate (2021–Present)

Encounter Bay (2km)

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  • Average Low 2021–2026

    10.5 °C
  • Average 2021–2026

    15.2 °C
  • Average High 2021–2026

    20.6 °C
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