Mary Street Lagoon Weather Forecast

    • 15
    • 18

    Showers

    • 13
    • 18

    Showers

    • 11
    • 19

    Partly cloudy

    • 9
    • 20

    Mostly sunny

    • 10
    • 20

    Mostly sunny

    • 11
    • 21

    Partly cloudy

    • 13
    • 22

    Mostly sunny

Today 4 Sep Mandurah

Cloudy. High chance of showers, becoming less likely early this morning. Winds westerly 30 to 35 km/h tending southwesterly 25 to 35 km/h in the early morning then becoming light in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
West to southwesterly 15 to 25 knots, reaching up to 30 knots early in the morning. Winds decreasing to about 10 knots in the early afternoon.
Seas
2 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing below 1 metre during the afternoon.
1st Swell
West to southwesterly 2 to 3 metres, increasing to 2.5 to 4 metres during the morning.
Weather
Partly cloudy. 70% chance of showers.
Weather Situation
A moderate cold front will cross the local waters this morning. A stronger cold front will cross the west coast on Saturday night. A new ridge will develop to the south from Sunday and will bring southeasterly change.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mary Street Lagoon Temperature Statistics View More

September Temperature

Mandurah (0km)

  • Lowest 1 September, 2026

    10.4 °C

  • Average September

    14.5 °C

  • Highest 2 September, 2026

    17.2 °C

Climate (2021–2026)

Mandurah (0km)

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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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