Swan River - Heirisson Island Weather Forecast

    • 12
    • 18

    Showers easing

    • 9
    • 18

    Shower or two

    • 6
    • 18

    Shower or two

    • 8
    • 18

    Shower or two

    • 6
    • 19

    Partly cloudy

    • 7
    • 21

    Sunny

    • 8
    • 21

    Mostly sunny

Today 18 Jul Perth

Cloudy. Very high chance of showers, most likely in the morning. Winds northwesterly 20 to 30 km/h tending westerly in the morning then becoming light in the evening.

Melville Waters

Wind
Northwesterly 10 to 15 knots tending westerly in the early morning then decreasing to below 10 knots in the late afternoon.
Weather
Partly cloudy. 95% chance of showers.
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  • Temperature Forecast Bureau of Meteorology

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Swan River - Heirisson Island Temperature Statistics View More

July Temperature

Perth Metro (5km)

  • Lowest 12 July, 2026

    4.2 °C

  • Average July

    13.7 °C

  • Highest 15 July, 2026

    25.7 °C

Climate (2021–2026)

Perth Metro (5km)

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  • Average Low 2021–2026

    13.4 °C

  • Average 2021–2026

    18.8 °C

  • Average High 2021–2026

    25.4 °C
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