Kwinana Grain Jetty Weather Forecast

    • 20
    • 30

    Sunny

    • 19
    • 33

    Sunny

    • 19
    • 35

    Sunny

    • 23
    • 37

    Possible storm

    • 25
    • 35

    Mostly sunny

    • 22
    • 28

    Partly cloudy

    • 20
    • 26

    Cloud clearing

Today 11 Dec Perth

Sunny. Winds east to southeasterly 15 to 20 km/h shifting southwesterly 25 to 35 km/h in the morning then tending southeast to southwesterly 20 to 30 km/h in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southeast to southwesterly 15 to 20 knots becoming southwesterly 20 to 25 knots in the early afternoon then tending southerly 15 to 25 knots in the evening. Winds reaching up to 30 knots in the evening.
Seas
Around 1 metre, increasing to 1 to 2 metres around midday.
1st Swell
Southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon.
Weather
Sunny.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Kwinana Grain Jetty Temperature Statistics View More

December Temperature

Garden Island (6km)

  • Lowest 4 December, 2025

    16.4 °C

  • Average December

    20.5 °C

  • Highest 1 December, 2025

    36.8 °C

Climate (2020–Present)

Garden Island (6km)

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

  • Average Low 2020–2025

    15.1 °C

  • Average 2020–2025

    18.9 °C

  • Average High 2020–2025

    23.4 °C
Get WillyWeather+ to remove ads