Cape Sir William Grant Weather Forecast

    • 14
    • 20

    Light rain

    • 11
    • 18

    Showers

    • 10
    • 15

    Rain increasing

    • 9
    • 15

    Rain

    • 9
    • 15

    Partly cloudy

    • 5
    • 17

    Possible shower

    • 8
    • 15

    Shower or two

Today 30 Sep South West

Cloudy. High chance of light rain. The chance of a thunderstorm. Winds north to northwesterly 15 to 25 km/h tending west to northwesterly 15 to 20 km/h in the evening then becoming light in the late evening.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
West to northwesterly 10 to 15 knots decreasing to about 10 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Cloudy. 70% chance of light rain. The chance of a thunderstorm later this evening.
Weather Situation
A weakening high pressure ridge will begin to clear in the east as series of troughs enter western Victoria. These troughs will move across the rest of the state on Thursday before a broad low pressure system develops across the north on Friday. This low is expected to be relatively slow moving, drifting into eastern Bass Strait by Saturday before clearing into the Tasman Sea on Sunday as weak high pressure ridge develops in the west.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Sir William Grant Temperature Statistics View More

September Temperature

Cape Nelson Lighthouse (7km)

  • Lowest 8 September, 2026

    3.5 °C
  • Average September

    13.2 °C
  • Highest 20 September, 2026

    25.5 °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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