Mouth Flat Beach Weather Forecast

    • 14
    • 23

    Shower

    • 17
    • 25

    Shower

    • 14
    • 20

    Partly cloudy

    • 11
    • 21

    Shower

    • 14
    • 23

    Shower

    • 13
    • 18

    Shower

    • 12
    • 17

    Shower

Today 5 Apr Kangaroo Island

Partly cloudy. Very high chance of showers. The chance of a thunderstorm late this afternoon and evening. Winds east to northeasterly 15 to 20 km/h tending north to northeasterly during the morning. Daytime maximum temperatures in the low to mid 20s.

South Central Coastal Waters

Wind
East to northeasterly 10 to 15 knots tending north to northeasterly during the day.
Seas
Around 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning.
Weather
Partly cloudy. 90% chance of showers. The chance of a thunderstorm during this afternoon and evening.
Weather Situation
A high pressure system centred just south of Tasmania will move southeastwards during Sunday. This will allow a trough over WA to link to a weak front south of the Bight then move over western and southern parts of SA later Sunday into Monday. Another high pressure system is expected to follow early next week.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mouth Flat Beach Temperature Statistics View More

April Temperature

Cape Willoughby (17km)

  • Lowest 2 April, 2026

    14.3 °C

  • Average April

    16.8 °C

  • Highest 1 April, 2026

    21.7 °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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