Mouth Flat Beach Weather Forecast

    • 16
    • 21

    Partly cloudy

    • 12
    • 19

    Cloudy

    • 12
    • 25

    Partly cloudy

    • 16
    • 21

    Partly cloudy

    • 13
    • 24

    Sunny

    • 16
    • 25

    Partly cloudy

    • 17
    • 23

    Shower

Today 19 Apr Kangaroo Island

Partly cloudy. Winds south to southwesterly 15 to 25 km/h tending south to southeasterly 15 to 20 km/h during the afternoon and evening. Daytime maximum temperatures in the low 20s.

South Central Coastal Waters

Wind
South to southwesterly 10 to 15 knots tending south to southeasterly during the afternoon and evening.
Seas
Around 1 metre.
1st Swell
Southwesterly around 1 metre, increasing to 1 to 2 metres during the afternoon.
Weather
Partly cloudy.
Weather Situation
A high pressure system centred west of Tasmania extends a ridge over western Victoria. A cold front over the far west of SA will weaken as it moves eastwards over central and eastern parts this morning. The high will move eastwards to be centred southeast of Tasmania later today but will continue to extend a ridge over SA early next week. Another front will move across the south of SA late Tuesday and early Wednesday then another high will move across waters to the south during Wednesday.
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 11 April, 2026

    10.5 °C
  • Average April

    16.2 °C
  • Highest 6 April, 2026

    25.4 °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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