Seal Island Weather Forecast
- 15
- 18
Showers easing
- 12
- 16
Showers
- 9
- 17
Shower or two
- 10
- 17
Shower or two
- 9
- 17
Mostly sunny
- 9
- 18
Sunny
- 10
- 19
Mostly sunny
Today 18 Jul Perth
Cloudy. Very high chance of showers, most likely in the morning. Winds northwesterly 20 to 30 km/h tending westerly in the morning then becoming light in the evening.
Perth Local Waters
Two Rocks to Dawesville, inshore from Rottnest Island- Wind
- Northwesterly 20 to 25 knots turning westerly 15 to 25 knots before dawn then decreasing to 10 to 15 knots in the late afternoon. Winds reaching up to 30 knots during the morning.
- Seas
- 1.5 to 2.5 metres, decreasing to 1 metre during the afternoon.
- 1st Swell
- Westerly 1.5 to 2 metres, increasing to 2 to 3 metres during the morning, then increasing to 3 to 4 metres around midday.
- Weather
- Partly cloudy. 95% chance of showers.
Seal Island Temperature Statistics View More
July Temperature
Garden Island (5km)
Lowest 8 July, 2026
7 °CAverage July
15.1 °CHighest 15 July, 2026
22.8 °C
Climate (2021–2026)
Garden Island (5km)
Average Low 2021–2026
15.1 °CAverage 2021–2026
18.9 °CAverage High 2021–2026
23.3 °C