Little Armstrong Bay Weather Forecast

    • 16
    • 24

    Windy. Sunny

    • 19
    • 26

    Sunny

    • 21
    • 27

    Sunny

    • 19
    • 25

    Sunny

    • 18
    • 24

    Windy. Cloud clearing

    • 16
    • 27

    Windy. Mostly sunny

    • 17
    • 27

    Sunny

Today 17 Feb Lower West

Sunny. Winds southeasterly 20 to 30 km/h tending southerly 15 to 25 km/h in the evening then becoming light in the late evening. Overnight temperatures falling to between 11 and 14 with daytime temperatures reaching around 30.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
Southerly 20 to 25 knots tending southeasterly 15 to 20 knots before dawn then tending southeast to southwesterly in the early morning.
Seas
1 to 2 metres, decreasing to 1 metre during the morning, then increasing to 1.5 metres during the afternoon.
1st Swell
Southwesterly 1 to 1.5 metres.
Weather
Sunny.
Weather Situation
A ridge is strengthening over the southwest and will build across southern WA this week. A west coast trough will return on Wednesday, deepening on Thursday before moving inland later in the day.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Little Armstrong Bay Temperature Statistics View More

February Temperature

Rottnest Island (1km)

  • Lowest 12 February, 2026

    16.4 °C

  • Average February

    22.7 °C

  • Highest 2 February, 2026

    39.4 °C

Climate (2021–Present)

Rottnest Island (1km)

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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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