Swan River - Heirisson Island Weather Forecast

    • 9
    • 25

    Clear

    • 9
    • 23

    Sunny morning. Late showers

    • 10
    • 17

    Showers easing

    • 5
    • 17

    Shower or two

    • 9
    • 19

    Shower or two

    • 7
    • 19

    Sunny

    • 8
    • 21

    Sunny

Today 21 May Perth

Clear. Light winds.

Melville Waters

Wind
Variable below 10 knots.
Weather
Clear.
Weather Situation
A high pressure system in the Bight contracts away to the east ahead of a moderate cold front approaching southwest WA later Thursday. The cold front will move across the South West Land Division on Friday. A new high pressure ridge will extend east over the mid west coast on Saturday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Swan River - Heirisson Island Temperature Statistics View More

May Temperature

Perth Metro (5km)

  • Lowest 20 May, 2025

    6 °C

  • Average May

    18 °C

  • Highest 9 May, 2025

    33.8 °C

Climate (2020–Present)

Perth Metro (5km)

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  • Average Low 2020–2025

    13.5 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    25.5 °C
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