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.
Willyama Beach Temperature Statistics View More
September Temperature
Stenhouse Bay (4km)
Lowest 2 September, 2025
7 °CAverage September
14 °CHighest 6 September, 2025
24.2 °C
Climate (2020–Present)
Stenhouse Bay (4km)
Average Low 2020–2025
13.1 °CAverage 2020–2025
16 °CAverage High 2020–2025
20.5 °C