Semaphore Weather Forecast

    • 10
    • 25

    Mostly clear

    • 16
    • 26

    Partly cloudy

    • 15
    • 24

    Partly cloudy

    • 14
    • 24

    Partly cloudy

    • 12
    • 25

    Partly cloudy

    • 15
    • 29

    Partly cloudy

    • 18
    • 27

    Shower or two

Today 23 Sep Adelaide

Mostly clear. Light winds becoming east to northeasterly 15 to 20 km/h in the late evening.

Adelaide Metropolitan Waters

Wind
South to southwesterly below 10 knots becoming southeasterly in the late afternoon then becoming east to northeasterly in the evening.
Seas
Below 0.5 metres.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly clear.
Weather Situation
A high pressure system centred over the Tasman Sea extends a ridge westwards over central and eastern SA and a low pressure trough extends from WA over western SA. This trough will be very slow-moving for the rest of the week and over the weekend and the ridge will move away to the east. A weakening cold front will slip across southern coasts late Thursday and early Friday.
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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

    14.1 °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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