Hillarys Boat Harbour Weather Forecast

    • 11
    • 19

    Rain increasing

    • 10
    • 17

    Showers easing

    • 8
    • 19

    Partly cloudy

    • 9
    • 22

    Partly cloudy

    • 11
    • 23

    Sunny

    • 13
    • 21

    Shower or two

    • 11
    • 19

    Possible shower

Today 26 Aug Perth

Cloudy. Very high chance of rain, most likely during this afternoon and evening. The chance of a thunderstorm, possibly severe with heavy rain which may lead to flash flooding in the southwest during the morning and afternoon. Winds northerly 15 to 20 km/h turning west to northwesterly 15 to 25 km/h in the middle of the day then tending southeast to southwesterly 15 to 20 km/h in the evening.

Perth Local Waters

Two Rocks to Dawesville, inshore from Rottnest Island
Wind
North to northwesterly 15 to 20 knots shifting southerly in the afternoon.
Seas
1 to 1.5 metres, decreasing to 1 metre during the afternoon.
1st Swell
Westerly 2 metres, increasing to 2 to 3 metres during the morning, then tending west to southwesterly 2.5 to 3 metres during the afternoon.
Weather
Cloudy. Near 100% chance of rain. The chance of a thunderstorm.
Weather Situation
Northwesterly winds this afternoon ahead of a slow-moving cold front approaching the southwest of the State. The front will pass through the local waters later on Wednesday, with a new ridge strengthening across the west coast on Thursday and Friday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Hillarys Boat Harbour Temperature Statistics View More

August Temperature

Swanbourne (15km)

  • Lowest 11 August, 2026

    5.1 °C

  • Average August

    14.4 °C

  • Highest 16 August, 2026

    24.6 °C

Climate (2021–2026)

Swanbourne (15km)

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  • Average Low 2021–2026

    14.5 °C

  • Average 2021–2026

    18.8 °C

  • Average High 2021–2026

    24.3 °C
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