Willyama Beach Weather Forecast

    • 15
    • 21

    Cloudy

    • 10
    • 15

    Cloudy

    • 10
    • 18

    Mostly sunny

    • 11
    • 21

    Sunny

    • 14
    • 23

    Partly cloudy

    • 14
    • 21

    Possible shower

    • 13
    • 19

    Possible shower

Today 20 Sep Yorke Peninsula

Partly cloudy. Slight chance of a shower, most likely later this evening. Winds southwesterly 25 to 40 km/h decreasing to 15 to 25 km/h in the late evening.

Investigator Strait Coastal Waters

Wind
Westerly 15 to 25 knots turning southwesterly 15 to 20 knots in the evening.
Seas
1.5 to 2 metres.
1st Swell
West to southwesterly around 1 metre, increasing to 1 to 1.5 metres later in the evening.
Weather
Partly cloudy.
Weather Situation
A trough and cold front will move to the east of SA later Sunday. A high pressure system will move eastwards across waters to the south during Monday then over Victoria and the Tasman Sea on Tuesday. This high will extend a ridge westwards 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 the Bight during Thursday.
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  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Willyama Beach Temperature Statistics View More

September Temperature

Stenhouse Bay (4km)

  • Lowest 17 September, 2026

    6.7 °C

  • Average September

    14.1 °C

  • Highest 12 September, 2026

    25.2 °C

Climate (2021–2026)

Stenhouse Bay (4km)

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  • Average Low 2021–2026

    13.2 °C

  • Average 2021–2026

    16.1 °C

  • Average High 2021–2026

    20.5 °C
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