Mouth Flat Beach Weather Forecast

    • 12
    • 21

    Partly cloudy

    • 13
    • 21

    Sunny

    • 15
    • 21

    Shower

    • 14
    • 19

    Shower

    • 12
    • 19

    Shower

    • 11
    • 19

    Shower

    • 11
    • 18

    Shower

Today 13 May Kangaroo Island

Patchy morning fog. Sunny afternoon. Light winds becoming northeasterly 15 to 20 km/h in the late evening. Daytime maximum temperatures in the low 20s.

South Central Coastal Waters

Wind
East to northeasterly about 10 knots increasing to 10 to 15 knots in the morning.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 metres.
Weather
Mostly sunny.
Weather Situation
A strong high pressure system near Tasmania is slowly moving east, reaching the Tasman Sea later today. A trough of low pressure moves into the far west late on Friday and continues across SA over the weekend.
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

    15.7 °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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