Shag Islands Weather Forecast
- 17
- 27
Becoming windy. Mostly sunny
- 17
- 30
Partly cloudy
- 16
- 33
Cloud clearing
- 18
- 33
Mostly sunny
- 23
- 35
Mostly sunny
- 21
- 32
Sunny
- 20
- 34
Sunny
Today 8 Jan Perth
Mostly sunny. Winds south to southeasterly 15 to 25 km/h tending south to southwesterly 25 to 40 km/h in the morning.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Southerly 20 to 30 knots decreasing to 15 to 25 knots before dawn then increasing to 20 to 30 knots in the early afternoon.
- Seas
- 2 to 2.5 metres, decreasing to 1 to 1.5 metres during the morning, then increasing to 1.5 to 2.5 metres around midday.
- 1st Swell
- Southwesterly 1.5 to 2 metres, decreasing to 1 to 1.5 metres during the morning, then decreasing to around 1 metre during the afternoon.
- Weather
- Mostly sunny.
Shag Islands Temperature Statistics View More
January Temperature
Garden Island (5km)
Lowest 7 January, 2026
18.5 °CAverage January
23.2 °CHighest 1 January, 2026
31.8 °C
Climate (2021–Present)
Garden Island (5km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
18.9 °CAverage High 2021–2026
23.3 °C