Sleaford Islands Weather Forecast

    • 16
    • 32

    Wind easing. Becoming cloudy

    • 14
    • 23

    Showers easing

    • 13
    • 21

    Showers

    • 10
    • 19

    Partly cloudy

    • 10
    • 18

    Partly cloudy

    • 10
    • 19

    Partly cloudy

    • 10
    • 20

    Partly cloudy

Today 29 Sep Port Lincoln

Becoming cloudy. Slight chance of a shower, most likely at night. Winds north to northwesterly 25 to 40 km/h tending northwest to southwesterly 20 to 30 km/h in the early afternoon then becoming light in the evening.

Central Coastal Waters

Wind
North to northwesterly 15 to 20 knots turning west to southwesterly 10 to 15 knots in the middle of the day then becoming variable below 10 knots in the evening.
Seas
1 to 1.5 metres, decreasing below 1 metre by early evening.
1st Swell
Southwesterly 2 metres.
Weather
Partly cloudy. 50% chance of showers.
Weather Situation
A high pressure system centred to the northeast of Tasmania extends a ridge over the southeast of the continent. This high and ridge will move eastwards over the Tasman Sea in coming days. A series of slow moving troughs will enter the west of the state today then move across the state on Wednesday and Thursday as a couple of cold fronts will move across waters to the south. A new high pressure system will become established south of the Bight during Friday.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Sleaford Islands Temperature Statistics View More

September Temperature

Port Lincoln Airport (38km)

  • Lowest 18 September, 2026

    3.3 °C

  • Average September

    14.4 °C

  • Highest 24 September, 2026

    30.8 °C

Climate (2021–2026)

Port Lincoln Airport (38km)

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  • Average Low 2021–2026

    11.5 °C

  • Average 2021–2026

    15.9 °C

  • Average High 2021–2026

    21.3 °C
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