For Rottnest Island :
No gale warning.
The reliability of the situation is good.
Clouds dispersing during the morning, sunny in the afternoon. No precipitation. In the evening, clear skies.
E force 3 in the morning becoming ESE force 2 in the evening. Gusts reaching 11 knots in the morning. Moderate sea. Moderate, fairly long swell from WSW. Good visibility becoming excellent in the middle of the day then excellent.