Shag Islands Weather Forecast
- 21
- 25
Partly cloudy
- 15
- 24
Becoming windy. Partly cloudy
- 16
- 28
Becoming windy. Sunny
- 17
- 31
Sunny
- 17
- 31
Sunny
- 19
- 32
Sunny
- 21
- 32
Sunny
Today 26 Dec Perth
Partly cloudy. Winds southwesterly 25 to 35 km/h turning southerly 15 to 25 km/h in the late evening.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Southerly 20 to 30 knots.
- Seas
- 2 metres.
- 1st Swell
- Southwesterly 1.5 to 2 metres.
- Weather
- Partly cloudy.
- Weather Situation
- A trough has moved onshore ahead of a weak cold front brushing the south coast today. A new ridge is developing along the southwest coast today in the wake of the trough and will expand east along the south coast on the weekend.
Shag Islands Temperature Statistics View More
December Temperature
Garden Island (5km)
Lowest 21 December, 2025
13.9 °CAverage December
22.3 °CHighest 14 December, 2025
38.8 °C
Climate (2020–Present)
Garden Island (5km)
Average Low 2020–2025
15.2 °CAverage 2020–2025
18.9 °CAverage High 2020–2025
23.4 °C