Half Moon Bay Weather Forecast

    • 9
    • 17

    Showers easing

    • 9
    • 16

    Cloudy

    • 5
    • 17

    Mostly sunny

    • 5
    • 19

    Partly cloudy

    • 8
    • 17

    Shower or two

    • 8
    • 16

    Shower or two

    • 7
    • 16

    Possible shower

Today 20 May Melbourne

Partly cloudy. Very high chance of showers about the Dandenongs, high chance elsewhere. Winds westerly 15 to 25 km/h tending southwesterly in the middle of the day then becoming light in the evening.

Port Phillip Local Waters

Wind
Westerly 10 to 15 knots, reaching up to 20 knots in the south in the late morning and afternoon. Winds tending southwesterly in the middle of the day.
Seas
Below 1 metre.
Weather
Partly cloudy. 70% chance of showers.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Half Moon Bay Temperature Statistics View More

May Temperature

Moorabbin Airport (21km)

  • Lowest 11 May, 2026

    4.9 °C

  • Average May

    14.9 °C

  • Highest 1 May, 2026

    28.1 °C

Climate (2021–Present)

Moorabbin Airport (21km)

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  • Average Low 2021–2026

    10.8 °C

  • Average 2021–2026

    15.2 °C

  • Average High 2021–2026

    20.5 °C
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