Rocky Island Weather Forecast

    • 12
    • 18

    Sunny

    • 15
    • 15

    Shower

    • 13
    • 15

    Shower

    • 14
    • 15

    Shower

    • 14
    • 14

    Cloudy

    • 13
    • 15

    Cloudy

    • 13
    • 15

    Cloudy

Today 18 Sep Lower Eyre Peninsula

Sunny. Winds northerly 25 to 40 km/h turning westerly 25 to 35 km/h in the early afternoon then decreasing to 15 to 25 km/h in the late afternoon. Daytime maximum temperatures in the low to high 20s.

Lower West Coastal Waters

Elliston to Cape Carnot
Wind
North to northwesterly 20 to 25 knots turning west to southwesterly 10 to 15 knots in the late afternoon.
Seas
1 to 1.5 metres, decreasing to 1 metre later in the evening.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Sunny.
Weather Situation
A high pressure system lies over the Tasman Sea with a ridge extending into the east of the state. A weak trough over South Australian waters will continue moving through eastern waters tonight. A cold front will pass over the south during Friday afternoon with a southwesterly flow persisting through the weekend as a ridge of high pressure extends over northern parts of the state.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Rocky Island Temperature Statistics View More

September Temperature

Cummins Airport (41km)

  • Lowest 12 September, 2025

    0.8 °C

  • Average September

    11.8 °C

  • Highest 6 September, 2025

    26.7 °C

Climate (2020–Present)

Cummins Airport (41km)

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  • Average Low 2020–2025

    9.5 °C

  • Average 2020–2025

    15.6 °C

  • Average High 2020–2025

    22.9 °C
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