Sleaford Islands Weather Forecast

    • 15
    • 21

    Windy. Cloudy

    • 14
    • 23

    Cloud clearing

    • 14
    • 33

    Sunny

    • 21
    • 36

    Mostly sunny

    • 15
    • 29

    Sunny

    • 16
    • 39

    Sunny

    • 20
    • 27

    Partly cloudy

Today 21 Jan Port Lincoln

Cloudy. Winds southerly 30 to 40 km/h tending southeasterly in the late evening.

Central Coastal Waters

Wind
Southerly 20 to 25 knots, reaching up to 30 knots in the evening. Winds turning southeasterly in the evening.
Seas
2 to 2.5 metres.
1st Swell
Southwesterly 2.5 metres.
Weather
Cloudy.
Weather Situation
A high pressure system south of WA maintains a ridge over western and southern SA, before it is expected to move eastwards on Thursday to be over the Tasman Sea on Friday. A trough of low pressure approaches from the west on Friday, forecast to move over SA during Saturday, reaching the northeast by early Sunday. Another high pressure system is expected to move over waters to the south over the weekend.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sleaford Islands Temperature Statistics View More

January Temperature

Port Lincoln Airport (38km)

  • Lowest 6 January, 2026

    11.9 °C

  • Average January

    19.8 °C

  • Highest 7 January, 2026

    44.5 °C

Climate (2021–Present)

Port Lincoln Airport (38km)

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  • Average Low 2021–2026

    11.4 °C

  • Average 2021–2026

    15.8 °C

  • Average High 2021–2026

    21.3 °C
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