Williams Island Weather Forecast

    • 14
    • 15

    Cloudy

    • 14
    • 15

    Cloudy

    • 15
    • 15

    Partly cloudy

    • 14
    • 16

    Cloudy

    • 14
    • 15

    Shower

    • 14
    • 14

    Shower

    • 13
    • 16

    Cloudy

Today 20 Aug Lower Eyre Peninsula

Partly cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. Winds northwesterly 15 to 25 km/h turning west to southwesterly 20 to 30 km/h in the late morning and early afternoon. Daytime maximum temperatures around 18.

Central Coastal Waters

Wind
Westerly 15 to 20 knots, reaching up to 25 knots in the west in the late morning. Winds turning southwesterly in the early afternoon.
Seas
1.5 to 2 metres, decreasing to 1 metre by early evening.
1st Swell
West to southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres in the west.
Weather
Cloudy. 50% chance of showers.
Weather Situation
A cold front clears to the east Wednesday evening. Weak troughs clip the southeast in a broad westerly flow on Thursday and Friday, as a ridge of high pressure is expected to approach South Australia from the west. The high centre is expected to linger over the state on the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Williams Island Temperature Statistics View More

August Temperature

Neptune Island (36km)

  • Lowest 4 August, 2026

    10.4 °C

  • Average August

    13.8 °C

  • Highest 7 August, 2026

    17.4 °C

Climate (2021–2026)

Neptune Island (36km)

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  • Average Low 2021–2026

    14.3 °C

  • Average 2021–2026

    16.2 °C

  • Average High 2021–2026

    18.8 °C
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