Mouth Flat Beach Weather Forecast

    • 11
    • 20

    Partly cloudy

    • 12
    • 21

    Partly cloudy

    • 12
    • 21

    Sunny

    • 14
    • 20

    Shower

    • 14
    • 19

    Shower

    • 12
    • 19

    Shower

    • 11
    • 18

    Shower

Today 12 May Kangaroo Island

Partly cloudy. Patchy morning fog. Light winds. Daytime maximum temperatures in the low 20s.

South Central Coastal Waters

Wind
Easterly about 10 knots increasing to 10 to 15 knots in the morning.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 metres, increasing to 1.5 to 2 metres during the morning.
Weather
Partly cloudy.
Weather Situation
A strong high pressure system near Tasmania is slowly moving east, reaching the Tasman Sea by tomorrow. A trough of low pressure moves into the far west late on Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mouth Flat Beach Temperature Statistics View More

May Temperature

Cape Willoughby (17km)

  • Lowest 3 May, 2026

    11.5 °C

  • Average May

    15.6 °C

  • Highest 1 May, 2026

    24.4 °C

Climate (2021–Present)

Cape Willoughby (17km)

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  • Average Low 2021–2026

    13.3 °C

  • Average 2021–2026

    15.4 °C

  • Average High 2021–2026

    18.4 °C
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