Mouth Flat Beach Weather Forecast

    • 11
    • 18

    Cloudy

    • 10
    • 19

    Shower

    • 11
    • 16

    Shower

    • 12
    • 18

    Shower

    • 13
    • 18

    Shower

    • 12
    • 18

    Shower

    • 12
    • 18

    Shower

Today 5 May Kangaroo Island

Cloudy. Slight chance of a shower. Winds southwesterly 15 to 20 km/h becoming light in the early morning. Daytime maximum temperatures around 18.

South Central Coastal Waters

Wind
Southwesterly 10 to 15 knots turning westerly in the late morning and afternoon.
Seas
Around 1 metre.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Cloudy.
Weather Situation
A ridge of high pressure will begin to extend from the west on Tuesday and will be briefly be weakened as a cold front crosses the southeast on Wednesday afternoon. The ridge will begin to re-establish in the wake of the front and stabilise over SA with the slow moving high pressure centre sitting south of WA by 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

    17.5 °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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