Rocky Island Weather Forecast

    • 17
    • 24

    Partly cloudy

    • 19
    • 20

    Partly cloudy

    • 16
    • 17

    Windy

    • 17
    • 17

    Cloudy

    • 16
    • 18

    Windy

    • 16
    • 21

    Sunny

    • 18
    • 23

    Sunny

Today 11 Dec Lower Eyre Peninsula

Partly cloudy. Slight chance of a shower, most likely in the morning and early afternoon. The chance of a thunderstorm in the morning and afternoon. Winds east to southeasterly 20 to 30 km/h. Overnight temperatures falling to around 14 with daytime temperatures reaching 28 to 33.

Lower West Coastal Waters

Elliston to Cape Carnot
Wind
Southeasterly 15 to 25 knots, reaching up to 30 knots offshore early in the morning.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres around midday.
Weather
Partly cloudy. The chance of a thunderstorm in the morning and afternoon.
Weather Situation
A ridge of high pressure persists over southern SA, continuing into Thursday before the high centre moves eastwards over the Tasman Sea late Thursday. A trough of low pressure is expected to move eastwards across the SA waters on Friday. Another ridge of high pressure will move over the south during the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Rocky Island Temperature Statistics View More

December Temperature

Cummins Airport (41km)

  • Lowest 7 December, 2025

    1.6 °C

  • Average December

    18.5 °C

  • Highest 3 December, 2025

    34.6 °C

Climate (2020–Present)

Cummins Airport (41km)

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  • Average Low 2020–2025

    9.4 °C

  • Average 2020–2025

    15.6 °C

  • Average High 2020–2025

    22.8 °C
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