Onion Bay Weather Forecast

    • 7
    • 15

    Partly cloudy

    • 8
    • 17

    Shower

    • 11
    • 15

    Shower

    • 9
    • 15

    Shower

    • 8
    • 14

    Shower

    • 9
    • 14

    Shower

    • 7
    • 14

    Shower

Today 17 Aug South West

Areas of morning fog. Mostly sunny afternoon. Light winds becoming east to northeasterly 15 to 20 km/h in the morning. Daytime maximum temperatures between 16 and 19.

Central Victoria Coastal Waters

Cape Otway to Wilsons Promontory
Wind
Easterly 15 to 20 knots.
Seas
Around 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly 1.5 metres, increasing to 1.5 to 2.5 metres in the west.
Weather
Sunny.
Weather Situation
A high pressure system centred over Tasmania will move over the Tasman Sea during today. An associated ridge south of Victoria will also move eastwards over the Tasman Sea. A low pressure trough will move across SA on Tuesday and early Wednesday then will slip to the south of Victoria during Wednesday then a weak high pressure ridge will move over the state on Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Onion Bay Temperature Statistics View More

August Temperature

Cape Otway (29km)

  • Lowest 1 August, 2026

    6.4 °C

  • Average August

    11.4 °C

  • Highest 2 August, 2026

    16.4 °C

Climate (2021–2026)

Cape Otway (29km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    11.8 °C

  • Average 2021–2026

    14.3 °C

  • Average High 2021–2026

    17.5 °C
Get WillyWeather+ to remove ads