Castle Point Weather Forecast
- 11
- 21
Possible shower
- 13
- 20
Showers
- 11
- 19
Shower or two
- 12
- 18
Showers easing
- 10
- 19
Partly cloudy
- 9
- 21
Partly cloudy
- 10
- 22
Sunny
Today 27 Sep South West
Cloudy. High chance of showers, most likely during this afternoon and evening. The chance of a thunderstorm during this afternoon and evening, possibly severe with damaging winds, large hail and heavy rain which may lead to flash flooding in the east. Winds east to southeasterly 15 to 20 km/h becoming light in the middle of the day. Daytime maximum temperatures between 18 and 21.
Bunbury Geographe Coastal Waters
Dawesville to Cape Naturaliste- Wind
- East to southeasterly 15 to 20 knots decreasing to about 10 knots in the middle of the day then becoming west to southwesterly in the early afternoon.
- Seas
- 1 to 2 metres, decreasing below 1 metre during the morning.
- 1st Swell
- Southwesterly 1.5 to 2.5 metres.
- Weather
- Partly cloudy. The chance of a thunderstorm during this afternoon and evening.
- Weather Situation
- An inland trough and low will move west on the weekend across southern and central WA, moving close to the west coast today. A high will develop south of the Bight on the weekend and move east for the following few days. On Monday the low will slip south of the state and the trough will move over south east parts. A cold front will approach on Tuesday and move through during Wednesday.
Castle Point Temperature Statistics View More
September Temperature
Cape Naturaliste (9km)
Lowest 26 September, 2026
8.3 °CAverage September
15.1 °CHighest 16 September, 2026
25.4 °C
Climate (2021–2026)
Cape Naturaliste (9km)
Average Low 2021–2026
13.3 °CAverage 2021–2026
17.2 °CAverage High 2021–2026
22.7 °C