Boston Island Weather Forecast

    • 14
    • 27

    Partly cloudy

    • 16
    • 31

    Mostly sunny

    • 13
    • 24

    Mostly sunny

    • 11
    • 23

    Cloudy

    • 11
    • 21

    Cloudy

    • 12
    • 24

    Cloud clearing

    • 13
    • 30

    Sunny

Today 11 Dec Port Lincoln

Partly cloudy. Slight chance of a shower in the late morning and afternoon. The chance of a thunderstorm in the late morning and afternoon. Winds east to southeasterly 20 to 25 km/h.

Spencer Gulf Coastal Waters

Wind
East to southeasterly 10 to 15 knots tending south to southeasterly in the afternoon.
Seas
Below 1 metre.
1st Swell
South to southwesterly around 1 metre.
Weather
Partly cloudy. The chance of a thunderstorm in the late morning and afternoon.
Weather Situation
A ridge of high pressure persists over southern SA, before the high centre moves eastwards over the Tasman Sea late today. A trough of low pressure is expected to move eastwards across the SA waters on Friday. Another ridge of high pressure will move over the south during the weekend.
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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

    18.1 °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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