For Rottnest Island :
No gale warning.
The reliability of the situation is good.
Cloud and long sunny periods. No precipitation. In the evening, changeable skies clearing completely.
No precipitation. ESE force 3 in the morning turning S in the middle of the day. Gusts reaching 16 knots in the morning. Moderate sea becoming slight in the evening. Low, fairly long swell from SW. Excellent visibility becoming good in the evening.