Southern Harbour Weather Forecast
- 7
- 17
Possible shower
- 11
- 19
Rain. Becoming windy
- 7
- 15
Showers
- 9
- 17
Showers
- 10
- 17
Showers
- 7
- 15
Shower or two
- 6
- 15
Partly cloudy
Today 19 Jul Perth
Partly cloudy. Slight chance of a shower. Light winds becoming north to northwesterly 15 to 20 km/h in the late evening.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Northwesterly about 10 knots increasing to 15 to 20 knots in the evening.
- Seas
- Below 1 metre.
- 1st Swell
- Southwesterly 2 to 3 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A ridge located nearby is moving east. A strong cold front will cross the Local Waters later Sunday 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.
Southern Harbour Temperature Statistics View More
July Temperature
Garden Island (12km)
Lowest 17 July, 2025
8.5 °CAverage July
15.1 °CHighest 1 July, 2025
21.3 °C
Climate (2020–Present)
Garden Island (12km)
Average Low 2020–2025
15.2 °CAverage 2020–2025
19 °CAverage High 2020–2025
23.4 °C