Middle River Weather Forecast

    • 8
    • 20

    Sunny

    • 13
    • 23

    Sunny

    • 14
    • 21

    Partly cloudy

    • 10
    • 15

    Cloudy

    • 7
    • 18

    Mostly sunny

    • 9
    • 22

    Partly cloudy

    • 12
    • 23

    Partly cloudy

Today 18 Sep Kangaroo Island

Sunny. Winds northwesterly 20 to 30 km/h. Daytime maximum temperatures around 20.

Investigator Strait Coastal Waters

Wind
North to northwesterly 10 to 15 knots, reaching up to 20 knots through the Backstairs Passage in the late morning and early afternoon. Winds decreasing to about 10 knots in the evening.
Seas
Around 1 metre.
1st Swell
West to southwesterly below 1 metre.
Weather
Sunny.
Weather Situation
A strong high pressure system centred over Victoria will maintain a ridge across SA as it drifts slowly over NSW. A cold front will then approach from the west late Saturday and move across SA on Sunday, before another ridge pushes in behind the front. The associated high will then move eastwards across waters south from Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Middle River Temperature Statistics View More

September Temperature

Kingscote Airport (41km)

  • Lowest 8 September, 2026

    1.9 °C

  • Average September

    12.1 °C

  • Highest 1 September, 2026

    21.3 °C

Climate (2021–2026)

Kingscote Airport (41km)

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  • Average Low 2021–2026

    9.3 °C

  • Average 2021–2026

    14.8 °C

  • Average High 2021–2026

    21.1 °C
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