Thomson Bay Weather Forecast

    • 16
    • 23

    Wind easing. Sunny

    • 16
    • 22

    Sunny

    • 17
    • 22

    Mostly sunny

    • 15
    • 19

    Shower or two

    • 14
    • 19

    Shower or two

    • 14
    • 19

    Possible shower

    • 14
    • 19

    Sunny

Today 11 May Lower West

Sunny. Winds north to northeasterly 25 to 35 km/h tending north to northwesterly 20 to 30 km/h in the middle of the day then becoming light in the late afternoon. Daytime maximum temperatures in the low to high 20s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
North to northeasterly 15 to 20 knots tending north to northwesterly 10 to 15 knots in the middle of the day then decreasing to below 10 knots in the evening.
Seas
1 to 1.5 metres, decreasing below 1 metre during the afternoon.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres during the morning.
Weather
Sunny.
Weather Situation
A slow moving high pressure system south of the State will direct NE'ly winds over Local Waters to begin the week. A cold front will approach on Wednesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Thomson Bay Temperature Statistics View More

May Temperature

Rottnest Island (4km)

  • Lowest 2 May, 2026

    12.4 °C

  • Average May

    16.9 °C

  • Highest 9 May, 2026

    22.4 °C

Climate (2021–Present)

Rottnest Island (4km)

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  • Average Low 2021–2026

    16 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.7 °C
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