Granite Island Weather Forecast

    • 5
    • 23

    Sunny

    • 9
    • 23

    Possible shower

    • 11
    • 21

    Shower or two

    • 10
    • 22

    Partly cloudy

    • 11
    • 20

    Shower or two

    • 11
    • 20

    Shower or two

    • 12
    • 22

    Possible shower

Today 12 Nov Mount Lofty Ranges

Sunny. The chance of frost in the north early this morning. Light winds becoming northwesterly 15 to 20 km/h in the morning then becoming light in the evening. Daytime maximum temperatures 20 to 25.

South Central Coastal Waters

Wind
Westerly 10 to 15 knots tending northwesterly in the morning then becoming variable about 10 knots in the late afternoon.
Seas
Around 1 metre.
1st Swell
Southwesterly 2.5 to 3 metres, increasing to 3 to 4 metres around midday, then decreasing to 3 metres by early evening.
Weather
Cloud clearing.
Weather Situation
A high pressure system centred near Adelaide maintains a ridge over SA, and is expected to track eastwards, moving over the Tasman Sea late Wednesday into Thursday. A broad low pressure trough is expected to form over western parts of SA on Thursday and move eastwards across the state, clearing away to the east by Saturday. Behind the trough a high pressure system southwest of WA will extend a ridge over SA over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Granite Island Temperature Statistics View More

November Temperature

Encounter Bay (2km)

  • Lowest 6 November, 2025

    7.7 °C

  • Average November

    15.5 °C

  • Highest 1 November, 2025

    28.3 °C

Climate (2020–Present)

Encounter Bay (2km)

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  • Average Low 2020–2025

    10.4 °C

  • Average 2020–2025

    15.1 °C

  • Average High 2020–2025

    20.6 °C
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