The Basin Weather Forecast

    • 14
    • 18

    Possible shower

    • 13
    • 19

    Cloudy

    • 15
    • 21

    Rain. Very windy

    • 14
    • 19

    Showers. Very windy

    • 12
    • 17

    Showers. Wind easing

    • 13
    • 18

    Shower or two

    • 13
    • 18

    Shower or two

Today 4 Jul Lower West

Partly cloudy. The chance of fog early this morning. Winds south to southeasterly 15 to 20 km/h tending south to southwesterly in the early afternoon then becoming light in the evening. Daytime maximum temperatures between 16 and 19.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
South to southeasterly 10 to 15 knots decreasing to below 10 knots in the late afternoon.
Seas
1 to 1.5 metres, decreasing below 1 metre during the morning.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the afternoon.
Weather
Partly cloudy.
Weather Situation
A new high pressure system drifts over the south of the state, followed by a sequence of cold fronts on Sunday and Monday.
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 3 July, 2025

    13.6 °C

  • Average July

    17 °C

  • Highest 1 July, 2025

    21 °C

Climate (2020–Present)

Rottnest Island (3km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
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