For Gwynn Island Reef :
No gale warning.
The reliability of the situation is very good.
Cloudy spells, sometimes dense. Chance of light rain. In the evening, good clear periods but cloud building.
Risk of showers in the early hours. NNE wind force 3 from the middle of the day. Gusts reaching 13 knots in the evening. Smooth to slight sea. Low, short swell from E. Excellent visibility becoming good in the evening.