Siesta Park Weather Forecast
- 10
- 18
Rain. Becoming windy
- 5
- 14
Possible shower
- 7
- 16
Showers increasing
- 9
- 15
Showers
- 5
- 14
Shower or two
- 5
- 15
Cloudy
- 6
- 15
Shower or two
Today 20 Jul Busselton
Cloudy. Very high chance of rain, becoming less likely in the evening. The chance of a thunderstorm in the morning and afternoon. Damaging winds possible. Winds west to northwesterly 30 to 40 km/h shifting southerly 35 to 45 km/h in the late afternoon then decreasing to 25 to 35 km/h in the evening.
Bunbury Geographe Coastal Waters
Dawesville to Cape Naturaliste- Wind
- West to northwesterly 25 to 30 knots, reaching up to 35 knots offshore in the late morning and afternoon. Winds shifting southerly in the late afternoon.
- Seas
- 2 to 3 metres, increasing to 2.5 to 4 metres offshore.
- 1st Swell
- Southwesterly 2 to 3 metres inshore, increasing to 2.5 to 4 metres offshore.
- Weather
- Cloudy. Near 100% chance of rain. The chance of a thunderstorm in the morning and afternoon, possibly severe.
- Caution
- Large and powerful surf conditions from the late morning are expected to be hazardous for coastal activities such as swimming, surfing and rock fishing.
- Weather Situation
- A ridge extending over southern parts of the State is moving east. A strong cold front will cross the South West Land Division during this afternoon and evening and will continue east across southern WA on Monday. A new ridge will follow in the wake of the front across the central WA coast, maintaining a westerly flow across the southwest coast. Another cold front will move through southwest WA on Wednesday.
Siesta Park Temperature Statistics View More
July Temperature
Busselton Airport (18km)
Lowest 13 July, 2025
3.1 °CAverage July
12.4 °CHighest 1 July, 2025
20.4 °C
Climate (2020–Present)
Busselton Airport (18km)
Average Low 2020–2025
10.7 °CAverage 2020–2025
16.7 °CAverage High 2020–2025
23.6 °C