Cape Heirisson Weather Forecast

    • 21
    • 28

    Becoming windy. Mostly sunny

    • 21
    • 24

    Sunny

    • 22
    • 24

    Becoming windy. Sunny

    • 22
    • 24

    Windy. Sunny

    • 22
    • 26

    Becoming windy. Sunny

    • 22
    • 27

    Becoming windy. Sunny

    • 24
    • 30

    Sunny

Today 17 Dec Gascoyne

Mostly sunny. Slight chance of a shower in the southeast, near zero chance elsewhere. The chance of a thunderstorm inland in the afternoon and evening. Winds southeast to southwesterly 25 to 35 km/h. Daytime maximum temperatures around 40.

Gascoyne Coastal Waters

Cape Cuvier to Kalbarri
Wind
Southerly 20 to 30 knots.
Seas
1.5 to 2 metres, increasing to 2 to 3 metres around midday.
1st Swell
Southwesterly 1 to 1.5 metres inshore, increasing to 1.5 to 2 metres offshore during the afternoon.
Weather
Partly cloudy.
Weather Situation
A deep trough lies inland of the west coast and will move east across the South West Land Division ahead of a weak cold front brushing the south coast. A ridge extends across the southwest coast will extend along southern WA on Thursday. A new west coast trough will form on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Cape Heirisson Temperature Statistics View More

December Temperature

Shark Bay Airport (25km)

  • Lowest 6 December, 2025

    18.1 °C

  • Average December

    24.9 °C

  • Highest 1 December, 2025

    38.9 °C

Climate (2020–Present)

Shark Bay Airport (25km)

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  • Average Low 2020–2025

    16.8 °C

  • Average 2020–2025

    22.3 °C

  • Average High 2020–2025

    29.6 °C
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