Rosetta Harbor Weather Forecast

    • 13
    • 27

    Cloudy

    • 13
    • 21

    Possible shower

    • 11
    • 21

    Partly cloudy

    • 10
    • 27

    Sunny

    • 13
    • 22

    Partly cloudy

    • 13
    • 20

    Possible shower

    • 13
    • 22

    Partly cloudy

Today 5 Dec Mount Lofty Ranges

Partly cloudy. Medium chance of a shower in the south, near zero chance elsewhere. Winds south to southeasterly 15 to 20 km/h.

South Central Coastal Waters

Wind
West to southwesterly 10 to 15 knots tending west to northwesterly below 10 knots in the evening.
Seas
Below 1 metre.
1st Swell
Southwesterly 2.5 to 3 metres.
Weather
Partly cloudy. The chance of a thunderstorm west of Kangaroo Island.
Weather Situation
A weak cold front will move across the southern coastal districts on Saturday as the high centre becomes established over the western Bight. The high will move slowly eastwards on Sunday and early next week to be centred over the Tasman Sea by Monday. Another weak cold front clips the southeast late Monday, before another high pressure system develops south of the Bight on Tuesday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Rosetta Harbor Temperature Statistics View More

December Temperature

Encounter Bay (3km)

  • Lowest 3 December, 2025

    6.9 °C

  • Average December

    20.4 °C

  • Highest 3 December, 2025

    31.8 °C

Climate (2020–Present)

Encounter Bay (3km)

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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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