Germein Bay Weather Forecast

    • 16
    • 30

    Sunny

    • 18
    • 27

    Possible morning shower

    • 13
    • 25

    Cloud clearing

    • 13
    • 26

    Cloud clearing

    • 12
    • 27

    Sunny

    • 13
    • 31

    Sunny

    • 15
    • 34

    Mostly sunny

Today 20 Dec Mid North

Mostly sunny. Slight chance of a shower in the east, near zero chance elsewhere. The chance of a thunderstorm in the north in the late afternoon and evening. Winds southeast to southwesterly 15 to 20 km/h tending west to southwesterly 15 to 25 km/h in the middle of the day then tending southeast to southwesterly 15 to 20 km/h in the evening. Overnight temperatures falling to around 14 with daytime temperatures reaching 30 to 35.

Spencer Gulf Coastal Waters

Wind
Southerly 15 to 20 knots, reaching up to 25 knots north of Cowell to Wallaroo in the late afternoon. Winds turning east to southeasterly 10 to 15 knots in the late evening.
Seas
1 to 1.5 metres, decreasing to 1 metre during the morning, increasing to 1 to 1.5 metres north of Cowell to Wallaroo around midday.
1st Swell
South to southwesterly 1 to 1.5 metres, decreasing to around 1 metre around midday.
Weather
Partly cloudy.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Germein Bay Temperature Statistics View More

December Temperature

Whyalla Airport (49km)

  • Lowest 2 December, 2025

    10.2 °C

  • Average December

    22.7 °C

  • Highest 18 December, 2025

    42.6 °C

Climate (2020–Present)

Whyalla Airport (49km)

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  • Average Low 2020–2025

    11.8 °C

  • Average 2020–2025

    17.4 °C

  • Average High 2020–2025

    23.7 °C
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