The Sisters Weather Forecast

    • 12
    • 33

    Sunny

    • 17
    • 38

    Sunny

    • 17
    • 27

    Partly cloudy

    • 13
    • 22

    Possible shower

    • 12
    • 21

    Shower or two

    • 11
    • 22

    Partly cloudy

    • 12
    • 20

    Cloudy

Today 17 Dec Mount Lofty Ranges

Sunny. Winds north to northeasterly 15 to 20 km/h tending north to northwesterly in the morning then becoming light in the evening. Daytime maximum temperatures in the low to mid 30s.

South Central Coastal Waters

Wind
East to northeasterly about 10 knots tending north to northeasterly 10 to 15 knots in the early morning then becoming variable about 10 knots in the middle of the day.
Seas
Below 1 metre.
1st Swell
Southerly 1 to 1.5 metres, decreasing to around 1 metre around midday.
Weather
Sunny.
Weather Situation
A high pressure system drifts into the Tasman Sea today. A trough of low pressure will briefly enter the far northeast of SA with another trough slowly moving across the south and west on Thursday. In the wake of the trough a south to southwesterly flow will establish across the coasts on Friday, continuing into Saturday.
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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

    18.1 °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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