Sleaford Islands Weather Forecast

    • 11
    • 18

    Mostly sunny

    • 11
    • 24

    Partly cloudy

    • 13
    • 20

    Showers easing

    • 11
    • 20

    Partly cloudy

    • 11
    • 17

    Cloudy

    • 10
    • 18

    Partly cloudy

    • 9
    • 21

    Sunny

Today 11 Sep Port Lincoln

Mostly sunny. Winds easterly 15 to 20 km/h tending northeasterly in the morning then becoming light in the early afternoon.

Central Coastal Waters

Wind
East to northeasterly 10 to 15 knots.
Seas
Around 1 metre.
1st Swell
Southwesterly 3 metres.
Weather
Mostly sunny.
Weather Situation
A high pressure system centred south of the Bight extends a ridge across the south of SA. The main high centre will gradually move eastwards to be centred to the east of SA later on Friday. A trough over the interior of WA will remain stationary but will weaken later Friday. Another low pressure trough will approach from the west on Saturday and move across SA on Sunday then a cold front will move across southern coasts later Monday. An upper disturbance will move over the far west on Monday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sleaford Islands Temperature Statistics View More

September Temperature

Port Lincoln Airport (38km)

  • Lowest 8 September, 2026

    7.5 °C

  • Average September

    13.7 °C

  • Highest 4 September, 2026

    25.1 °C

Climate (2021–2026)

Port Lincoln Airport (38km)

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  • Average Low 2021–2026

    11.5 °C

  • Average 2021–2026

    15.8 °C

  • Average High 2021–2026

    21.3 °C
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