Cape Sir William Grant Weather Forecast

    • 10
    • 15

    Showers easing

    • 8
    • 15

    Partly cloudy

    • 6
    • 16

    Partly cloudy

    • 7
    • 17

    Partly cloudy

    • 8
    • 15

    Cloudy

    • 8
    • 15

    Cloudy

    • 6
    • 17

    Partly cloudy

Today 25 Aug South West

Cloudy. Very high chance of rain, most likely in the morning. The chance of a thunderstorm in the northeast in the afternoon. Winds east to northeasterly 15 to 20 km/h becoming light before dawn then becoming south to southwesterly 15 to 25 km/h in the middle of the day. Overnight temperatures falling to around 10 with daytime temperatures reaching around 14.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Variable about 10 knots becoming southwesterly 15 to 20 knots in the middle of the day.
Seas
Around 1 metre, increasing to 1 to 1.5 metres by early evening.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy. 60% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Sir William Grant Temperature Statistics View More

August Temperature

Cape Nelson Lighthouse (7km)

  • Lowest 1 August, 2026

    5.6 °C

  • Average August

    11.9 °C

  • Highest 19 August, 2026

    17.9 °C

Climate (2021–2026)

Cape Nelson Lighthouse (7km)

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  • Average Low 2021–2026

    11.9 °C

  • Average 2021–2026

    14.4 °C

  • Average High 2021–2026

    17.6 °C
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