For Rottnest Island :
No gale warning.
The reliability of the situation is good.
Fair weather with mostly clear skies. In the evening, skies with few clouds.
ESE force 3 in the morning becoming force 2 in the evening. Gusts reaching 12 knots until the middle of the day. Slight sea. Low, short swell from SW. Poor visibility becoming excellent in the middle of the day.