Grant Bay Weather Forecast

    • 5
    • 19

    Partly cloudy

    • 9
    • 17

    Showers increasing. Windy

    • 7
    • 13

    Showers increasing

    • 9
    • 15

    Showers

    • 8
    • 13

    Shower or two

    • 8
    • 15

    Shower or two

    • 9
    • 16

    Cloudy

Today 18 Sep South West

Partly cloudy. The chance of frost in the northeast in the early morning. Slight chance of a shower in the south in the evening. Near zero chance of rain elsewhere. Winds northerly 15 to 20 km/h tending north to northwesterly 30 to 45 km/h in the morning then becoming northerly 20 to 30 km/h in the evening. Overnight temperatures falling to around 4 with daytime temperatures reaching around 19.

West Victoria Coastal Waters

SA-Vic Border to Cape Otway
Wind
Northerly 15 to 20 knots, reaching up to 25 knots in the far west in the late morning and early afternoon. Winds turning northwesterly in the early afternoon.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres in the far west.
1st Swell
West to southwesterly 3 to 4 metres, decreasing to 2.5 to 3 metres during the morning.
Weather
Partly cloudy. The chance of a thunderstorm offshore during this afternoon and evening.
Weather Situation
A weak high pressure system to the north of Victoria will move into the Tasman Sea today, before a series of cold fronts cross Bass Strait between late Friday and early Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Grant Bay Temperature Statistics View More

September Temperature

Cape Nelson Lighthouse (8km)

  • Lowest 6 September, 2025

    7.8 °C

  • Average September

    12.9 °C

  • Highest 15 September, 2025

    24.9 °C

Climate (2020–Present)

Cape Nelson Lighthouse (8km)

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  • Average Low 2020–2025

    11.8 °C

  • Average 2020–2025

    14.3 °C

  • Average High 2020–2025

    17.6 °C
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