The Basin Weather Forecast

    • 11
    • 20

    Mostly sunny

    • 13
    • 21

    Partly cloudy

    • 11
    • 21

    Sunny

    • 14
    • 22

    Partly cloudy

    • 15
    • 21

    Sunny

    • 16
    • 20

    Showers

    • 15
    • 19

    Shower or two

Today 7 Sep Lower West

Partly cloudy. Winds southeasterly 20 to 30 km/h. Daytime maximum temperatures in the low 20s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southeasterly 15 to 20 knots.
Seas
Around 1 metre.
1st Swell
Southwesterly 1.5 to 2.5 metres.
Weather
Mostly sunny.
Weather Situation
A high in the Bight is directing southeasterly winds across the local waters. Winds tending easterly on Wednesday as the high starts to move away, with a trough developing near the west coast on Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Basin Temperature Statistics View More

September Temperature

Rottnest Island (3km)

  • Lowest 1 September, 2026

    12.5 °C

  • Average September

    15.2 °C

  • Highest 4 September, 2026

    19 °C

Climate (2021–2026)

Rottnest Island (3km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    16.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.8 °C
Get WillyWeather+ to remove ads