Cape Blanche Offshore Weather Forecast

    • 11
    • 16

    Partly cloudy

    • 13
    • 16

    Partly cloudy

    • 15
    • 19

    Partly cloudy

    • 17
    • 17

    Shower

    • 16
    • 17

    Partly cloudy

    • 15
    • 15

    Partly cloudy

    • 13
    • 16

    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.

Upper West Coastal Waters

Fowlers Bay to Elliston
Wind
Easterly 15 to 25 knots.
Seas
1.5 to 2.5 metres, decreasing to 1 to 1.5 metres around midday.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Mostly sunny.
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.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Blanche Offshore Temperature Statistics View More

September Temperature

Streaky Bay (28km)

  • Lowest 7 September, 2026

    5.7 °C

  • Average September

    14.8 °C

  • Highest 1 September, 2026

    25.5 °C

Climate (2021–2026)

Streaky Bay (28km)

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  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    16.5 °C

  • Average High 2021–2026

    23.6 °C
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