Semaphore Weather Forecast

    • 13
    • 26

    Cloud clearing

    • 17
    • 31

    Partly cloudy

    • 21
    • 28

    Possible late shower

    • 16
    • 23

    Showers

    • 13
    • 18

    Showers easing

    • 11
    • 18

    Shower or two

    • 11
    • 19

    Shower or two

Today 21 Oct Adelaide

Cloud clearing. Light winds becoming south to southwesterly 15 to 20 km/h in the early afternoon then turning east to southeasterly in the evening.

Adelaide Metropolitan Waters

Wind
Variable below 10 knots becoming south to southwesterly 10 to 15 knots in the early afternoon then turning east to southeasterly in the evening.
Seas
Below 1 metre.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Cloud clearing.
Weather Situation
A trough of low pressure lingers about the east, before weakening later today, as a slow moving high pressure system in the Tasman Sea will re-establish a ridge across southern parts. A trough is then forecast to briefly move into the west on Thursday, before another trough and cold front move more broadly across SA on Friday and Saturday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Semaphore Temperature Statistics View More

October Temperature

Parafield Airport (13 km)

  • Lowest 6 October, 2026

    6.6 °C

  • Average October

    17.6 °C

  • Highest 18 October, 2026

    31.3 °C

Climate (2021–2026)

Parafield Airport (13 km)

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  • Average Low 2021–2026

    11.3 °C

  • Average 2021–2026

    17.2 °C

  • Average High 2021–2026

    23.7 °C
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