Boston Island Weather Forecast

    • 11
    • 21

    Partly cloudy

    • 12
    • 25

    Sunny

    • 15
    • 33

    Sunny

    • 17
    • 36

    Sunny

    • 18
    • 29

    Partly cloudy

    • 14
    • 26

    Partly cloudy

    • 15
    • 26

    Partly cloudy

Today 15 Dec Port Lincoln

Partly cloudy. Winds southerly 20 to 25 km/h tending southeasterly 20 to 30 km/h before dawn.

Spencer Gulf Coastal Waters

Wind
South to southeasterly 15 to 20 knots, reaching up to 30 knots north of Cowell to Wallaroo in the evening.
Seas
1 to 1.5 metres, increasing to 1 to 2 metres by early evening.
1st Swell
South to southwesterly around 1 metre, increasing to 1 to 2 metres south of Cowell to Wallaroo.
Weather
Cloud clearing.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Boston Island Temperature Statistics View More

December Temperature

Port Lincoln Airport (11km)

  • Lowest 7 December, 2025

    8.1 °C

  • Average December

    18.2 °C

  • Highest 3 December, 2025

    35.3 °C

Climate (2020–Present)

Port Lincoln Airport (11km)

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  • Average Low 2020–2025

    11.4 °C

  • Average 2020–2025

    15.7 °C

  • Average High 2020–2025

    21.3 °C
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