Willyama Beach Weather Forecast
- 10
- 18
Showers increasing
- 11
- 17
Showers easing
- 10
- 17
Partly cloudy
- 10
- 17
Possible shower
- 11
- 17
Partly cloudy
- 10
- 17
Partly cloudy
- 9
- 17
Shower or two
Today 18 Aug Yorke Peninsula
Partly cloudy. Very high chance of showers, most likely in the evening. The chance of a thunderstorm in the south in the evening. Winds northeasterly 15 to 25 km/h turning northerly 20 to 30 km/h in the morning. Overnight temperatures falling to around 9 with daytime temperatures reaching around 18.
Investigator Strait Coastal Waters
- Wind
- Northeasterly 10 to 15 knots turning northerly 15 to 20 knots in the late morning and afternoon.
- Seas
- 1 to 1.5 metres.
- 1st Swell
- West to southwesterly 1 to 1.5 metres, decreasing to around 1 metre during the afternoon.
- Weather
- Partly cloudy. 95% chance of showers. The chance of a thunderstorm this evening.
- Weather Situation
- A large blocking high pressure system persists over the Tasman Sea. An upper level disturbance responsible for precipitation over central and eastern parts will weaken today as a weakening cold front moves across western parts today and across the southeast on Wednesday. A high pressure ridge is expected to develop over South Australia from Wednesday afternoon with weak troughs clipping the southeast in a broad westerly flow on Thursday and Friday.
Willyama Beach Temperature Statistics View More
August Temperature
Stenhouse Bay (4km)
Lowest 1 August, 2026
4.5 °CAverage August
12.5 °CHighest 7 August, 2026
19 °C
Climate (2021–2026)
Stenhouse Bay (4km)
Average Low 2021–2026
13.1 °CAverage 2021–2026
16.1 °CAverage High 2021–2026
20.5 °C