Cap Island Weather Forecast

    • 11
    • 16

    Partly cloudy

    • 11
    • 16

    Partly cloudy

    • 14
    • 19

    Partly cloudy

    • 17
    • 18

    Shower

    • 15
    • 16

    Partly cloudy

    • 14
    • 15

    Partly cloudy

    • 12
    • 15

    Partly cloudy

Today 10 Sep West Coast

Mostly sunny. Slight chance of a shower west of Nullarbor, most likely this evening. Near zero chance of rain elsewhere. The chance of a thunderstorm west of Nullarbor late this afternoon and evening. Winds easterly 20 to 30 km/h. Daytime maximum temperatures around 20.

Lower West Coastal Waters

Elliston to Cape Carnot
Wind
Easterly 15 to 20 knots, reaching up to 25 knots offshore early in the morning.
Seas
1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
1st Swell
Southwesterly 3 to 4 metres, decreasing to 3 metres by early evening.
Weather
Cloud clearing.
Weather Situation
A high pressure system centred south of the Bight extends a ridge across the south of SA. The main high centre will gradually move eastwards to be centred to the east of SA on Friday. A trough over the interior of WA will remain stationary for most of the week and may extend into the far west of SA at times. Another low pressure trough will approach from the west on Saturday and move across SA on Sunday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cap Island Temperature Statistics View More

September Temperature

Cummins Airport (64km)

  • Lowest 8 September, 2026

    2.4 °C

  • Average September

    12.3 °C

  • Highest 4 September, 2026

    24.3 °C

Climate (2021–2026)

Cummins Airport (64km)

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  • Average Low 2021–2026

    9.7 °C

  • Average 2021–2026

    15.7 °C

  • Average High 2021–2026

    22.9 °C
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