Royston Island Weather Forecast

    • 15
    • 23

    Partly cloudy

    • 15
    • 23

    Partly cloudy

    • 15
    • 25

    Sunny

    • 17
    • 26

    Mostly sunny

    • 14
    • 23

    Sunny

    • 14
    • 21

    Cloudy

    • 14
    • 22

    Partly cloudy

Today 9 Dec Yorke Peninsula

Mostly sunny. Winds southeasterly 25 to 35 km/h. Daytime maximum temperatures 24 to 33.

Central Coastal Waters

Wind
Southeasterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres in the west during the afternoon.
1st Swell
Southwesterly 2 metres, increasing to 2 to 3 metres around midday.
Weather
Partly cloudy.
Weather Situation
A broad ridge extends over inland parts of the state, another high pressure system develops south of the Bight, strengthening the ridge over the state ahead of a trough of low pressure developing across the far northwest late Tuesday persisting late into the week.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Royston Island Temperature Statistics View More

December Temperature

Stenhouse Bay (13km)

  • Lowest 3 December, 2025

    9.1 °C
  • Average December

    17.3 °C
  • Highest 3 December, 2025

    33.4 °C

Climate (2020–Present)

Stenhouse Bay (13km)

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  • Average Low 2020–2025

    13.1 °C
  • Average 2020–2025

    16 °C
  • Average High 2020–2025

    20.4 °C
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