Mouth Flat Beach Weather Forecast

    • 13
    • 21

    Sunny

    • 15
    • 21

    Shower

    • 14
    • 19

    Shower

    • 12
    • 18

    Shower

    • 10
    • 18

    Shower

    • 11
    • 18

    Shower

    • 11
    • 18

    Shower

Today 14 May Kangaroo Island

Patchy morning fog. Mostly sunny day. Winds north to northeasterly 15 to 20 km/h becoming light in the late afternoon then becoming northeasterly 15 to 20 km/h in the late evening. Daytime maximum temperatures in the low 20s.

South Central Coastal Waters

Wind
Northeasterly 10 to 15 knots.
Seas
Around 1 metre.
1st Swell
Southwesterly 1.5 to 2 metres, increasing to 2 to 3 metres during the afternoon.
Weather
Sunny.
Weather Situation
A strong high pressure system in the Tasman Sea is slowly moving east. A cold front will move east across the Southern Ocean over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Mouth Flat Beach Temperature Statistics View More

May Temperature

Cape Willoughby (17km)

  • Lowest 3 May, 2026

    11.5 °C

  • Average May

    15.7 °C

  • Highest 1 May, 2026

    24.4 °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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