Perth FAD4 (offshore) Weather Forecast

    • 22
    • 22

    Partly cloudy

    • 20
    • 21

    Cloudy

    • 19
    • 21

    Windy

    • 20
    • 23

    Windy

    • 22
    • 26

    Sunny

    • 24
    • 25

    Sunny

    • 21
    • 22

    Windy

Today 16 Jan Lower West

Sunny. Winds northeast to southeasterly 20 to 30 km/h tending northwest to northeasterly 15 to 20 km/h in the morning then tending west to southwesterly 25 to 35 km/h in the middle of the day. Daytime maximum temperatures 30 to 37.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
Southerly 15 to 20 knots tending southwesterly in the early morning.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning, then increasing to 1 to 1.5 metres during the afternoon.
1st Swell
Southwesterly 1.5 metres, increasing to 1.5 to 2 metres by early evening.
Weather
Sunny.
Weather Situation
A west coast trough is deepening as a ridge over the southeast of the state moves away. The trough will move inland today ahead of a weak cold front brushing past the south coast tomorrow. A new ridge will develop about southwest WA from the weekend and expand along southern WA on Monday. A west coast trough will return later Monday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD4 (offshore) Temperature Statistics View More

January Temperature

Rottnest Island (43km)

  • Lowest 9 January, 2026

    16.5 °C

  • Average January

    22.1 °C

  • Highest 1 January, 2026

    31.2 °C

Climate (2021–Present)

Rottnest Island (43km)

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  • Average Low 2021–2026

    16.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    22.8 °C
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