Sinclair Island Weather Forecast

    • 13
    • 19

    Partly cloudy

    • 15
    • 18

    Shower

    • 15
    • 18

    Shower

    • 16
    • 17

    Shower

    • 16
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    Shower

    • 16
    • 17

    Shower

    • 15
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    Cloudy

Today 21 May West Coast

Mostly clear. Winds northeasterly 15 to 20 km/h.

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
Variable about 10 knots becoming easterly 10 to 15 knots in the evening then tending northeasterly in the late evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Mostly clear.
Weather Situation
A high pressure system over southeastern SA will remain dominant as it slowly moves east and into the Tasman Sea on Friday. A cold front move across across South Australia over the weekend. A low pressure system develops and lingers near the southeast early next week whilst a ridge high pressure builds over the west.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sinclair Island Temperature Statistics View More

May Temperature

Ceduna Airport (66km)

  • Lowest 18 May, 2026

    3.8 °C

  • Average May

    15.2 °C

  • Highest 1 May, 2026

    32.1 °C

Climate (2021–Present)

Ceduna Airport (66km)

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  • Average Low 2021–2026

    10.9 °C

  • Average 2021–2026

    16.8 °C

  • Average High 2021–2026

    23.7 °C
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