The Basin Weather Forecast

    • 11
    • 19

    Mostly sunny

    • 13
    • 19

    Sunny

    • 14
    • 19

    Shower or two

    • 11
    • 16

    Shower or two

    • 10
    • 19

    Sunny

    • 13
    • 21

    Shower or two

    • 15
    • 19

    Showers

Today 29 Jul Lower West

Mostly sunny. Winds easterly 15 to 25 km/h tending northeasterly 20 to 30 km/h in the morning then becoming light in the early afternoon. Daytime maximum temperatures between 17 and 20.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Northeasterly 10 to 15 knots decreasing to about 10 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres.
Weather
Mostly sunny.
Weather Situation
A ridge lays over southern WA, persisting through to later Friday when the next cold front is expected to move through.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Basin Temperature Statistics View More

July Temperature

Rottnest Island (3km)

  • Lowest 1 July, 2026

    9.9 °C

  • Average July

    15.4 °C

  • Highest 15 July, 2026

    21.8 °C

Climate (2021–2026)

Rottnest Island (3km)

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  • Average Low 2021–2026

    16.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.8 °C
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