Round Island Weather Forecast

    • 10
    • 19

    Mostly sunny

    • 8
    • 20

    Mostly sunny

    • 10
    • 21

    Sunny

    • 12
    • 21

    Shower or two

    • 11
    • 20

    Showers

    • 11
    • 19

    Shower or two

    • 11
    • 19

    Shower or two

Today 13 May Central

Areas of thick morning fog, particularly in the west. Mostly sunny afternoon. Light winds becoming northwest to northeasterly 15 to 20 km/h in the morning then becoming light in the early afternoon. Daytime maximum temperatures between 18 and 21.

Western Port Local Waters

Wind
East to northeasterly about 10 knots.
Seas
Below 0.5 metres.
Weather
The chance of morning fog with reduced visibility. Mostly sunny afternoon.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Round Island Temperature Statistics View More

May Temperature

Cerberus (18km)

  • Lowest 11 May, 2026

    3.5 °C

  • Average May

    13.7 °C

  • Highest 1 May, 2026

    27.8 °C

Climate (2021–Present)

Cerberus (18km)

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  • Average Low 2021–2026

    10.2 °C

  • Average 2021–2026

    14.5 °C

  • Average High 2021–2026

    19.6 °C
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