The Basin Weather Forecast

    • 14
    • 19

    Showers. Becoming windy

    • 14
    • 19

    Showers easing. Wind easing

    • 14
    • 19

    Showers

    • 12
    • 18

    Shower or two. Windy

    • 11
    • 19

    Mostly sunny

    • 11
    • 19

    Mostly sunny

    • 11
    • 20

    Sunny

Today 3 Sep Lower West

Cloudy. The chance of fog in the south in the early morning. High chance of showers. Light winds becoming north to northwesterly 15 to 20 km/h in the morning then tending west to northwesterly 20 to 30 km/h in the middle of the day. Overnight temperatures falling to around 10 with daytime temperatures reaching around 18.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Variable about 10 knots becoming west to northwesterly 15 to 25 knots in the middle of the day.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly 2 to 2.5 metres.
Weather
Partly cloudy. 90% chance of showers.
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

    14.8 °C

  • Highest 1 September, 2026

    17.1 °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