Southern Harbour Weather Forecast
- 11
- 23
Clear
- 14
- 21
Showers. Possible afternoon storm
- 13
- 19
Showers
- 14
- 19
Showers easing
- 11
- 17
Showers
- 9
- 18
Mostly sunny
- 10
- 18
Mostly sunny
Today 15 Jul Perth
Clear. Winds north to northeasterly 15 to 20 km/h.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Northerly 10 to 15 knots.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 1.5 to 2 metres.
- Weather
- Clear.
- Weather Situation
- A ridge over southern parts of the state will be pushed northwards as a cold front moves over the Perth local waters Thursday afternoon, followed by a second cold front later Friday and into Saturday. A weak ridge will begin to develop north of the local waters over the central west cost on Sunday.
Southern Harbour Temperature Statistics View More
July Temperature
Garden Island (12km)
Lowest 8 July, 2026
7 °CAverage July
14.6 °CHighest 9 July, 2026
20.7 °C
Climate (2021–2026)
Garden Island (12km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
18.9 °CAverage High 2021–2026
23.3 °C