Marjorie Bay Weather Forecast

    • 16
    • 20

    Possible morning shower

    • 15
    • 22

    Sunny

    • 17
    • 22

    Mostly sunny

    • 17
    • 21

    Partly cloudy

    • 14
    • 20

    Mostly sunny

    • 12
    • 20

    Sunny

    • 15
    • 21

    Partly cloudy

Today 18 May Lower West

Partly cloudy. The chance of morning fog. Slight chance of a shower in the south in the morning and early afternoon. Near zero chance of rain elsewhere. Light winds. Daytime maximum temperatures in the low 20s.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Variable below 10 knots becoming southerly 10 to 15 knots in the late afternoon then tending southeasterly in the late evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 1 to 1.5 metres.
Weather
Partly cloudy.
Weather Situation
A ridge lies over the region and will persist through the much of the week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Marjorie Bay Temperature Statistics View More

May Temperature

Rottnest Island (3km)

  • Lowest 2 May, 2026

    12.4 °C

  • Average May

    17.5 °C

  • Highest 12 May, 2026

    25.4 °C

Climate (2021–Present)

Rottnest Island (3km)

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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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