Seal Island Weather Forecast

    • 15
    • 19

    Possible shower

    • 15
    • 20

    Shower or two

    • 12
    • 20

    Mostly sunny

    • 13
    • 20

    Mostly sunny

    • 13
    • 20

    Partly cloudy

    • 13
    • 20

    Possible shower

    • 13
    • 19

    Shower or two

Today 19 Sep Perth

Cloudy. Medium chance of showers about the southern suburbs, slight chance elsewhere. Winds westerly 25 to 40 km/h decreasing to 20 to 30 km/h in the late afternoon then becoming light in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Westerly 15 to 20 knots.
Seas
1.5 to 2 metres, decreasing to 1 metre by early evening.
1st Swell
Westerly 3 metres, increasing to 3 to 4 metres during the afternoon.
Weather
Cloudy.
Weather Situation
A cold front moved across the local waters this morning, with a new ridge developing in it's wake. The ridge weakens Monday, and strengthens again on Tuesday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Seal Island Temperature Statistics View More

September Temperature

Garden Island (5km)

  • Lowest 1 September, 2026

    10.2 °C

  • Average September

    16.8 °C

  • Highest 16 September, 2026

    29.3 °C

Climate (2021–2026)

Garden Island (5km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    23.3 °C
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