Perth FAD5 (offshore) Weather Forecast

    • 25
    • 26

    Sunny

    • 20
    • 21

    Windy

    • 18
    • 20

    Windy

    • 18
    • 20

    Windy

    • 18
    • 22

    Windy

    • 18
    • 22

    Windy

    • 21
    • 23

    Sunny

Today 25 Dec Lower West

Partly cloudy. The chance of a thunderstorm with little or no rainfall in the afternoon and early evening. Winds northeasterly 25 to 40 km/h turning north to northwesterly 15 to 25 km/h in the early afternoon. Daytime maximum temperatures around 40.

Perth Coastal Waters

Two Rocks to Dawesville, offshore from Rottnest Island
Wind
East to northeasterly 15 to 20 knots becoming variable about 10 knots in the middle of the day then becoming west to northwesterly 10 to 15 knots in the evening.
Seas
1 to 1.5 metres, decreasing below 1 metre around midday.
1st Swell
Southwesterly 1.5 metres.
Weather
Sunny.
Weather Situation
A trough is deepening offshore and will move close to the west coast during today before moving inland on this evening, ahead of a weak cold front brushing the south coast on Friday. A new ridge will develop along the southwest coast later on Friday and expand east along the south coast on the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Perth FAD5 (offshore) Temperature Statistics View More

December Temperature

Rottnest Island (37km)

  • Lowest 21 December, 2025

    14.6 °C

  • Average December

    21.4 °C

  • Highest 14 December, 2025

    37.1 °C

Climate (2020–Present)

Rottnest Island (37km)

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  • Average Low 2020–2025

    16.1 °C

  • Average 2020–2025

    19 °C

  • Average High 2020–2025

    22.8 °C
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