Williamstown Beach Weather Forecast

    • 7
    • 19

    Sunny

    • 10
    • 26

    Partly cloudy

    • 18
    • 25

    Shower or two

    • 13
    • 16

    Shower or two

    • 10
    • 17

    Partly cloudy

    • 10
    • 22

    Mostly sunny

    • 13
    • 26

    Shower or two

Today 23 Sep Melbourne

Sunny. The chance of frost early this morning. Light winds.

Port Phillip Local Waters

Wind
Variable about 10 knots.
Seas
Below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A high pressure system near Bass Strait will move across the Tasman Sea during the rest of the week, directing a warm north to northeasterly airstream over Victoria. Another high pressure system moves in from the west from Saturday.
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  • Temperature Forecast Bureau of Meteorology

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Williamstown Beach Temperature Statistics View More

September Temperature

Laverton RAAF Base (11km)

  • Lowest 18 September, 2026

    3.1 °C
  • Average September

    13.5 °C
  • Highest 20 September, 2026

    29.7 °C

Climate (2021–2026)

Laverton RAAF Base (11km)

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  • Average Low 2021–2026

    10.6 °C
  • Average 2021–2026

    15.2 °C
  • Average High 2021–2026

    20.6 °C
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