Mouth Flat Beach Weather Forecast

    • 15
    • 29

    Partly cloudy

    • 19
    • 24

    Shower

    • 14
    • 21

    Partly cloudy

    • 14
    • 22

    Cloudy

    • 15
    • 21

    Windy

    • 14
    • 21

    Windy

    • 15
    • 25

    Partly cloudy

Today 21 Feb Kangaroo Island

Partly cloudy. Slight chance of a shower. The chance of a thunderstorm later tonight. Winds northwest to northeasterly 15 to 20 km/h becoming light in the evening.

South Central Coastal Waters

Wind
East to northeasterly 10 to 15 knots turning north to northwesterly in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2 metres.
Weather
Partly cloudy. The chance of a thunderstorm later tonight.
Weather Situation
A weak ridge of high pressure across the south of SA will weaken further during Saturday as a trough and cold front cross the Bight. The trough and cold front will move across the south on Sunday. A tropical low pressure system centred over the southeast of the NT extends a trough into the northeast of SA. The low and trough are expected to remain slow-moving next week and another ridge will extend across waters to the south of SA.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mouth Flat Beach Temperature Statistics View More

February Temperature

Cape Willoughby (17km)

  • Lowest 18 February, 2026

    13.3 °C

  • Average February

    18.5 °C

  • Highest 16 February, 2026

    34.9 °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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