Secret Harbour Weather Forecast
- 15
- 19
Shower or two. Windy
- 15
- 20
Morning shower or two
- 12
- 20
Mostly sunny
- 13
- 20
Partly cloudy
- 13
- 20
Mostly sunny
- 13
- 20
Shower or two
- 13
- 19
Shower or two
Today 19 Sep Mandurah
Partly cloudy. High chance of showers, becoming less likely in the early afternoon. Winds westerly 30 to 45 km/h.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Westerly 15 to 25 knots, reaching up to 30 knots during the morning. Winds decreasing to 10 to 15 knots in the late afternoon.
- Seas
- 1.5 to 2.5 metres, decreasing to 1 to 1.5 metres during the afternoon.
- 1st Swell
- Westerly 3 to 4 metres, decreasing to 3 metres around midday.
- Weather
- Partly cloudy. 60% chance of showers.
- Weather Situation
- A cold front is moving east across the south coast today, followed by a couple more weak fronts brushing past the south coast on the weekend. A new ridge will form along the southwest coast on Sunday before weakening on Monday. A trough developing inland will move east along the south coast on Tuesday ahead of the next cold front.
Secret Harbour Temperature Statistics View More
September Temperature
Mandurah (13km)
Lowest 1 September, 2026
10.4 °CAverage September
16.9 °CHighest 16 September, 2026
26.9 °C
Climate (2021–2026)
Mandurah (13km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
19.1 °CAverage High 2021–2026
23.8 °C