The Basin Weather Forecast

    • 21
    • 30

    Sunny

    • 23
    • 31

    Sunny

    • 19
    • 25

    Windy. Mostly sunny

    • 16
    • 23

    Windy. Cloudy

    • 15
    • 23

    Possible shower. Windy

    • 14
    • 23

    Windy. Partly cloudy

    • 17
    • 25

    Becoming windy. Sunny

Today 22 Dec Lower West

Sunny. Winds easterly 25 to 40 km/h turning south to southeasterly 25 to 35 km/h in the late morning and early afternoon then tending east to southeasterly 15 to 25 km/h in the late evening. Daytime maximum temperatures around 40.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
East to southeasterly 15 to 20 knots turning southerly 15 to 25 knots in the late morning.
Seas
Around 1 metre, increasing to 1 to 2 metres during the afternoon.
1st Swell
Southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning.
Weather
Sunny.
Weather Situation
A firm ridge to the south is directing easterly winds, with sea breezes developing during the day. A trough will remain to the east, but will move offshore on Monday morning before moving inland ahead of a weak cold front later in the day. The front will brush past the south coast early Tuesday and will be followed by a strengthening ridge from the Indian Ocean.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Basin Temperature Statistics View More

December Temperature

Rottnest Island (3km)

  • Lowest 2 December, 2024

    14 °C

  • Average December

    21.1 °C

  • Highest 17 December, 2024

    30.4 °C

Climate (2019–Present)

Rottnest Island (3km)

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  • Average Low 2019–2024

    16 °C

  • Average 2019–2024

    18.9 °C

  • Average High 2019–2024

    22.7 °C
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