Williams Island Weather Forecast

    • 15
    • 16

    Partly cloudy

    • 15
    • 16

    Partly cloudy

    • 16
    • 20

    Partly cloudy

    • 18
    • 18

    Partly cloudy

    • 16
    • 16

    Shower

    • 13
    • 14

    Shower

    • 13
    • 15

    Shower

Today 20 Oct Lower Eyre Peninsula

Partly cloudy. Winds south to southwesterly 15 to 20 km/h tending south to southeasterly 15 to 25 km/h in the late afternoon. Daytime maximum temperatures in the low to mid 20s.

Central Coastal Waters

Wind
Southerly 10 to 15 knots tending southeasterly in the late evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 metres.
Weather
Partly cloudy.
Weather Situation
A trough of low pressure over southeastern South Australia lingers in the east, before weakening from Thursday. A slow moving high pressure system in the Tasman Sea re-establishes a ridge across southern parts from Wednesday. Another series of troughs move into western parts on Thursday and broadly across SA on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Williams Island Temperature Statistics View More

October Temperature

Neptune Island (36 km)

  • Lowest 2 October, 2026

    12 °C

  • Average October

    15.9 °C

  • Highest 17 October, 2026

    21.5 °C

Climate (2021–2026)

Neptune Island (36 km)

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  • Average Low 2021–2026

    14.4 °C

  • Average 2021–2026

    16.2 °C

  • Average High 2021–2026

    18.9 °C
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