Mouth Flat Beach Weather Forecast

    • 14
    • 20

    Cloudy

    • 13
    • 24

    Partly cloudy

    • 14
    • 33

    Sunny

    • 19
    • 37

    Sunny

    • 18
    • 29

    Partly cloudy

    • 16
    • 28

    Partly cloudy

    • 16
    • 21

    Shower

Today 4 Jan Kangaroo Island

Partly cloudy. Winds south to southeasterly 25 to 35 km/h. Daytime maximum temperatures in the low to mid 20s.

South Central Coastal Waters

Wind
Southeasterly 15 to 20 knots.
Seas
1 to 1.5 metres, decreasing to 1 metre around midday, then increasing to 1 to 1.5 metres by early evening.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1.5 metres during the morning.
Weather
Cloudy.
Weather Situation
A high pressure system centred south of SA extends a ridge over most of the state and a broad trough lingers over the far northeast. These features will remain relatively stationary over the weekend then the high will move eastwards early next week. A broad trough will move across from the west mid next week.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mouth Flat Beach Temperature Statistics View More

January Temperature

Cape Willoughby (17km)

  • Lowest 1 January, 2026

    13.7 °C
  • Average January

    16.1 °C
  • Highest 2 January, 2026

    20.1 °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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