West Island Weather Forecast

    • 13
    • 21

    Shower or two

    • 10
    • 21

    Mostly sunny

    • 10
    • 25

    Mostly sunny

    • 11
    • 27

    Mostly sunny

    • 16
    • 28

    Mostly sunny

    • 16
    • 29

    Partly cloudy

    • 17
    • 27

    Shower or two

Today 26 Apr Mount Lofty Ranges

Partly cloudy. High chance of showers, becoming less likely this afternoon. The chance of a thunderstorm this morning. Light winds becoming west to southwesterly 15 to 20 km/h in the middle of the day then turning south to southeasterly in the early afternoon. Daytime maximum temperatures around 20.

South Central Coastal Waters

Wind
Southwesterly below 10 knots increasing to 10 to 15 knots in the morning then becoming southerly about 10 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Mostly sunny. The chance of a thunderstorm early this morning.
Weather Situation
A strong high pressure system over the Tasman Sea will maintain a ridge over SA. A trough over the southeast of the state will weaken and clear to the east early Sunday. A new high pressure system will develop in the Bight on Sunday, drifting east early next week to merge with the strong high in the Tasman Sea.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

West Island Temperature Statistics View More

April Temperature

Encounter Bay (6km)

  • Lowest 18 April, 2026

    5.5 °C

  • Average April

    16.9 °C

  • Highest 21 April, 2026

    30.3 °C

Climate (2021–Present)

Encounter Bay (6km)

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  • Average Low 2021–2026

    10.5 °C

  • Average 2021–2026

    15.2 °C

  • Average High 2021–2026

    20.7 °C
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