Penneshaw Weather Forecast

    • 9
    • 20

    Partly cloudy

    • 13
    • 21

    Shower

    • 13
    • 20

    Shower

    • 13
    • 16

    Windy

    • 11
    • 19

    Partly cloudy

    • 13
    • 25

    Partly cloudy

    • 15
    • 21

    Shower

Today 23 Sep Kangaroo Island

Mostly sunny. Winds northeasterly 15 to 20 km/h becoming light in the early afternoon. Daytime maximum temperatures in the low 20s.

Investigator Strait Coastal Waters

Wind
Northeasterly 10 to 15 knots turning easterly below 10 knots in the late morning and afternoon.
Seas
Below 1 metre.
1st Swell
West to southwesterly around 1 metre.
Weather
Mostly sunny.
Weather Situation
A high pressure system centred over the Tasman Sea extends a ridge over SA ahead of a low pressure trough that is expected to move over the far west of SA during Wednesday. The trough will slip southeastwards over southern coasts during Thursday and Friday, before being confined to the west over the weekend.
Graph Plots Open in Graphs

  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Penneshaw Temperature Statistics View More

September Temperature

Cape Willoughby (22km)

  • Lowest 2 September, 2026

    9.9 °C

  • Average September

    13.7 °C

  • Highest 20 September, 2026

    22.3 °C

Climate (2021–2026)

Cape Willoughby (22km)

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  • Average Low 2021–2026

    13.4 °C

  • Average 2021–2026

    15.4 °C

  • Average High 2021–2026

    18.5 °C
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