Williamstown Weather Forecast

    • 10
    • 17

    Shower or two

    • 8
    • 16

    Cloudy

    • 6
    • 16

    Mostly sunny

    • 8
    • 18

    Mostly sunny

    • 10
    • 18

    Shower or two

    • 9
    • 15

    Shower or two

    • 8
    • 15

    Shower or two

Today 20 May Melbourne

Partly cloudy. Very high chance of showers about the Dandenongs, high chance elsewhere. Winds west to northwesterly 15 to 20 km/h tending west to southwesterly 15 to 25 km/h in the morning.

Port Phillip Local Waters

Wind
Westerly 10 to 15 knots, reaching up to 20 knots in the morning and afternoon. Winds tending southwesterly in the middle of the day.
Seas
Below 1 metre.
Weather
Partly cloudy. 60% chance of showers.
Weather Situation
A high near the South Australian coast extends a ridge across northern Victoria while a weak cold front passes through Bass Strait during Wednesday morning. The ridge will extend across the remainder of Victoria late Wednesday then persist for Thursday and Friday. The high centre will move southeast on Saturday while the ridge continues to dominate.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Williamstown Temperature Statistics View More

May Temperature

Laverton RAAF Base (12km)

  • Lowest 11 May, 2026

    5.8 °C

  • Average May

    14.8 °C

  • Highest 1 May, 2026

    28 °C

Climate (2021–Present)

Laverton RAAF Base (12km)

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  • Average Low 2021–2026

    10.6 °C

  • Average 2021–2026

    15.1 °C

  • Average High 2021–2026

    20.6 °C
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