Success Harbour Entrance Weather Forecast
- 11
- 19
Rain. Becoming windy
- 7
- 15
Showers
- 9
- 17
Showers
- 10
- 17
Showers
- 7
- 15
Shower or two
- 6
- 15
Partly cloudy
- 6
- 17
Sunny
Today 20 Jul Perth
Cloudy. Very high chance of rain. The chance of a thunderstorm in the afternoon, possibly severe. Winds northwesterly 30 to 45 km/h shifting south to southwesterly in the evening.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Northwesterly 25 to 30 knots, reaching up to 35 knots in the late afternoon. Winds shifting southerly 20 to 30 knots in the evening.
- Seas
- 2 to 3 metres.
- 1st Swell
- West to southwesterly 2 to 3 metres.
- Weather
- Cloudy. Near 100% chance of rain. The chance of a thunderstorm in the 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 located nearby is moving east. A strong cold front will cross the Local Waters later this afternoon or early evening. A new ridge will develop to the north of the Local Waters on Monday, maintaining a westerly flow across the southwest coast. Another cold front will move through southwest WA on Wednesday.
Success Harbour Entrance Temperature Statistics View More
July Temperature
Swanbourne (12km)
Lowest 11 July, 2025
4.9 °CAverage July
13.9 °CHighest 6 July, 2025
21.5 °C
Climate (2020–Present)
Swanbourne (12km)
Average Low 2020–2025
14.6 °CAverage 2020–2025
18.9 °CAverage High 2020–2025
24.3 °C