The Sisters Weather Forecast

    • 15
    • 33

    Partly cloudy

    • 14
    • 21

    Partly cloudy

    • 12
    • 20

    Cloudy

    • 12
    • 19

    Cloudy

    • 11
    • 21

    Sunny

    • 12
    • 30

    Sunny

    • 15
    • 32

    Sunny

Today 12 Dec Mount Lofty Ranges

Partly cloudy. Slight chance of a shower in the evening. The chance of a thunderstorm near the Barossa Valley at night. Winds east to northeasterly 20 to 30 km/h tending northwest to northeasterly in the morning then tending southeast to southwesterly 25 to 35 km/h in the middle of the day. Overnight temperatures falling to between 15 and 20 with daytime temperatures reaching 32 to 37.

South Central Coastal Waters

Wind
Easterly 10 to 15 knots becoming variable about 10 knots in the morning then becoming southerly 15 to 20 knots in the middle of the day.
Seas
Around 1 metre, increasing to 1 to 1.5 metres by early evening.
1st Swell
Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning.
Weather
Mostly sunny.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

The Sisters Temperature Statistics View More

December Temperature

Encounter Bay (8km)

  • Lowest 3 December, 2025

    6.9 °C

  • Average December

    18.3 °C

  • Highest 4 December, 2025

    33.4 °C

Climate (2020–Present)

Encounter Bay (8km)

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  • Average Low 2020–2025

    10.4 °C

  • Average 2020–2025

    15.1 °C

  • Average High 2020–2025

    20.6 °C
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