Blue Bay Weather Forecast

    • 12
    • 20

    Mostly sunny

    • 12
    • 20

    Mostly sunny

    • 13
    • 20

    Possible shower

    • 12
    • 20

    Possible shower

    • 13
    • 18

    Shower or two

    • 11
    • 19

    Shower or two

    • 12
    • 18

    Shower or two

Today 21 Sep Mandurah

Mostly sunny. Light winds becoming southwesterly 15 to 25 km/h in the early afternoon then tending southerly 15 to 20 km/h in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southeasterly below 10 knots tending southerly 10 to 15 knots in the middle of the day.
Seas
Below 0.5 metres, increasing to around 1 metre during the afternoon.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Mostly sunny.
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Blue Bay Temperature Statistics View More

September Temperature

Mandurah (1km)

  • Lowest 1 September, 2026

    10.4 °C

  • Average September

    16.9 °C

  • Highest 16 September, 2026

    26.9 °C

Climate (2021–2026)

Mandurah (1km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    19.1 °C

  • Average High 2021–2026

    23.8 °C
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