Willyama Beach Weather Forecast

    • 9
    • 21

    Sunny

    • 11
    • 18

    Showers. Very windy

    • 10
    • 16

    Shower or two

    • 11
    • 17

    Shower or two

    • 11
    • 17

    Partly cloudy

    • 10
    • 17

    Cloudy

    • 10
    • 17

    Partly cloudy

Today 18 Sep Yorke Peninsula

Mostly sunny. Winds northerly 25 to 35 km/h turning westerly 15 to 20 km/h in the evening. Overnight temperatures falling to around 7 with daytime temperatures reaching the low to mid 20s.

Investigator Strait Coastal Waters

Wind
Northerly 15 to 20 knots turning west to northwesterly 10 to 15 knots in the late afternoon.
Seas
Below 1 metre, increasing to 1 to 1.5 metres around midday, then decreasing below 1 metre later in the evening.
1st Swell
West to southwesterly 1 to 2 metres, decreasing to 1 to 1.5 metres by early evening.
Weather
Mostly sunny.
Weather Situation
A high pressure system lies over NSW with a ridge extending into the east of the state. A weak trough will move over South Australian waters later today, settling over the far northeast tonight before clearing on Friday. A cold front will pass over the south during Friday afternoon with a southwesterly flow persisting through the weekend as a ridge of high pressure extends over northern parts of the state.
Graph Plots Open in Graphs
  • Temperature Forecast Bureau of Meteorology

  • Temperature Real-Time

Willyama Beach Temperature Statistics View More

September Temperature

Stenhouse Bay (4km)

  • Lowest 2 September, 2025

    7 °C
  • Average September

    14 °C
  • Highest 6 September, 2025

    24.2 °C

Climate (2020–Present)

Stenhouse Bay (4km)

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  • Average Low 2020–2025

    13.1 °C
  • Average 2020–2025

    16 °C
  • Average High 2020–2025

    20.5 °C
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