Mouth Flat Beach Weather Forecast

    • 14
    • 24

    Clear

    • 14
    • 35

    Sunny

    • 19
    • 38

    Sunny

    • 18
    • 26

    Partly cloudy

    • 16
    • 28

    Partly cloudy

    • 15
    • 20

    Cloudy

    • 14
    • 20

    Cloudy

Today 5 Jan Kangaroo Island

Clear. Winds southeasterly 15 to 25 km/h.

South Central Coastal Waters

Wind
Southeasterly about 10 knots increasing to 10 to 15 knots in the late afternoon.
Seas
Below 1 metre.
1st Swell
Southwesterly 1.5 metres.
Weather
Clear.
Weather Situation
A high pressure system over the southeast of SA will drift over Victoria on Tuesday before establishing in the Tasman Sea. Meanwhile a broad trough will continue to linger over the far northeast. On Wednesday a new trough will push across the south and settle over the southern pastorals and the east. This trough will be pushed further inland as a southwesterly airstream establishes on Friday with a ridge establishing across the south.
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  • 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

    16.2 °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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