Diamond Bay Beach Weather Forecast

    • 16
    • 20

    Shower

    • 14
    • 19

    Windy

    • 14
    • 22

    Sunny

    • 16
    • 32

    Partly cloudy

    • 18
    • 22

    Partly cloudy

    • 15
    • 25

    Partly cloudy

    • 17
    • 28

    Partly cloudy

Today 21 Jan Mornington Peninsula

Partly cloudy. Medium chance of showers, most likely in the late afternoon and evening. Winds southeasterly 15 to 25 km/h turning south to southwesterly 25 to 40 km/h in the early afternoon.

Port Phillip Local Waters

Wind
Southerly 15 to 25 knots.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
Weather
Partly cloudy.
Weather Situation
A high pressure system moves into waters south of the Bight and extends a ridge over western Victoria tonight and more broadly over the state on Thursday. The high then moves into the Tasman Sea on Friday, followed by a trough of low pressure over the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Diamond Bay Beach Temperature Statistics View More

January Temperature

Cerberus (38km)

  • Lowest 2 January, 2026

    8.5 °C

  • Average January

    19.1 °C

  • Highest 9 January, 2026

    42.3 °C

Climate (2021–Present)

Cerberus (38km)

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  • Average Low 2021–2026

    10.1 °C

  • Average 2021–2026

    14.5 °C

  • Average High 2021–2026

    19.5 °C
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