Shag Islands Weather Forecast

    • 18
    • 34

    Clear

    • 22
    • 38

    Sunny

    • 22
    • 37

    Sunny

    • 23
    • 36

    Sunny

    • 19
    • 27

    Partly cloudy

    • 16
    • 26

    Mostly sunny

    • 17
    • 25

    Possible shower

Today 19 Jan Perth

Clear. Winds south to southeasterly 15 to 25 km/h tending east to southeasterly in the late evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 15 to 20 knots turning southeasterly 10 to 15 knots in the late evening.
Seas
1 to 1.5 metres.
1st Swell
Southwesterly 1.5 to 2 metres.
Weather
Clear.
Weather Situation
A ridge lies south of the State with a high pressure centre moving into the Bight during Tuesday and Wednesday. A west coast trough is developing and will deepen during Tuesday and Wednesday before moving inland on Thursday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Shag Islands Temperature Statistics View More

January Temperature

Garden Island (5km)

  • Lowest 18 January, 2026

    15.3 °C

  • Average January

    22.6 °C

  • Highest 1 January, 2026

    31.8 °C

Climate (2021–Present)

Garden Island (5km)

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  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    23.3 °C
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