Semaphore South Weather Forecast

    • 22
    • 30

    Mostly sunny

    • 15
    • 28

    Sunny

    • 17
    • 24

    Possible early storm. Showers

    • 13
    • 23

    Partly cloudy

    • 14
    • 24

    Cloud clearing

    • 12
    • 25

    Partly cloudy

    • 13
    • 26

    Mostly sunny

Today 19 Dec Adelaide

Mostly sunny. The chance of a thunderstorm about the northern suburbs in the late morning and afternoon. Winds west to northwesterly 15 to 20 km/h tending west to southwesterly 20 to 30 km/h in the middle of the day then tending southeast to southwesterly in the evening.

Adelaide Metropolitan Waters

Wind
Variable below 10 knots becoming southwesterly 15 to 20 knots in the early morning then tending southerly in the evening.
Seas
Below 1 metre, increasing to 1 to 1.5 metres during the afternoon.
1st Swell
West to southwesterly below 0.5 metres.
Weather
Mostly sunny.
Weather Situation
A trough of broad low pressure lies in the west. This area of low pressure is expected to slowly extend across the state from the west during today and tomorrow, before contracting to the far northeast on Sunday evening. Behind this, a ridge of high pressure moves over the west and south during Sunday, persisting throughout SA by late Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Semaphore South Temperature Statistics View More

December Temperature

Parafield Airport (14km)

  • Lowest 7 December, 2025

    7.4 °C

  • Average December

    21.6 °C

  • Highest 12 December, 2025

    38.4 °C

Climate (2020–Present)

Parafield Airport (14km)

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  • Average Low 2020–2025

    11.1 °C

  • Average 2020–2025

    17 °C

  • Average High 2020–2025

    23.4 °C
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