Mouth Flat Beach Weather Forecast

    • 11
    • 14

    Shower

    • 10
    • 14

    Shower

    • 9
    • 16

    Shower

    • 7
    • 15

    Shower

    • 8
    • 16

    Shower

    • 7
    • 15

    Shower

    • 8
    • 14

    Shower

Today 9 Aug Kangaroo Island

Cloudy. Very high chance of showers. The chance of a thunderstorm in the morning and afternoon. Winds northerly 20 to 30 km/h becoming light in the early afternoon then becoming southerly 25 to 40 km/h in the late afternoon. Overnight temperatures falling to around 10 with daytime temperatures reaching around 14.

South Central Coastal Waters

Wind
Northerly 15 to 20 knots shifting southerly 15 to 25 knots in the early afternoon. Winds reaching up to 30 knots in the evening.
Seas
1.5 to 2.5 metres.
1st Swell
Southwesterly 2.5 metres, increasing to 2.5 to 4 metres around midday.
Weather
Cloudy. Near 100% chance of showers. The chance of a thunderstorm.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mouth Flat Beach Temperature Statistics View More

August Temperature

Cape Willoughby (17km)

  • Lowest 4 August, 2026

    8.9 °C

  • Average August

    12.1 °C

  • Highest 7 August, 2026

    17.4 °C

Climate (2021–2026)

Cape Willoughby (17km)

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  • Average Low 2021–2026

    13.3 °C

  • Average 2021–2026

    15.4 °C

  • Average High 2021–2026

    18.5 °C
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