First Rock Weather Forecast

    • 22
    • 38

    Clear

    • 23
    • 41

    Sunny

    • 25
    • 31

    Sunny

    • 18
    • 25

    Partly cloudy

    • 15
    • 25

    Sunny

    • 18
    • 25

    Shower or two

    • 17
    • 24

    Partly cloudy

Today 20 Jan Perth

Clear. Winds southeasterly 15 to 25 km/h tending easterly 25 to 35 km/h 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 deep trough offshore will move inland on Thursday as a ridge over the local waters weakens, ahead of a weak cold front brushing the south coast on Friday. A weak ridge will form in the southwest before another cold front approaches over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

First Rock Temperature Statistics View More

January Temperature

Garden Island (7km)

  • Lowest 18 January, 2026

    15.3 °C

  • Average January

    22.6 °C

  • Highest 1 January, 2026

    31.8 °C

Climate (2021–Present)

Garden Island (7km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    15.1 °C

  • Average 2021–2026

    18.9 °C

  • Average High 2021–2026

    23.3 °C
Get WillyWeather+ to remove ads