Semaphore Weather Forecast

    • 10
    • 17

    Cloudy

    • 7
    • 21

    Sunny

    • 11
    • 25

    Sunny

    • 17
    • 29

    Partly cloudy

    • 17
    • 30

    Partly cloudy

    • 20
    • 29

    Mostly sunny

    • 18
    • 30

    Mostly sunny

Today 21 Sep Adelaide

Cloudy. Winds southeasterly 15 to 20 km/h.

Adelaide Metropolitan Waters

Wind
Southeasterly 10 to 15 knots decreasing to about 10 knots in the late evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 1 metre.
Weather
Cloudy.
Weather Situation
A high pressure system will move eastwards across waters to the south today then over Victoria and the Tasman Sea on Tuesday. This high will extend a ridge westwards over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday. The trough will slip southeastwards over the Bight during Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Semaphore Temperature Statistics View More

September Temperature

Parafield Airport (13km)

  • Lowest 18 September, 2026

    2.2 °C

  • Average September

    14.3 °C

  • Highest 19 September, 2026

    26.6 °C

Climate (2021–2026)

Parafield Airport (13km)

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  • Average Low 2021–2026

    11.3 °C

  • Average 2021–2026

    17.1 °C

  • Average High 2021–2026

    23.6 °C
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