Mid November the weather will be fine. Most likely hot and sunny, maybe a cool wind from the north in the evenings. The rainy season peters out in sometime around late October / early November.

Good time to visit as the island is quiet but the weather good and all trips & tours will be running.

Thanks Macfarang , I won't need a jacket for evening will I ??

Well, it might get down to 20-22C overnight in November.
But a long sleeved cotton shirt is all you need in case it does get unseasonably nippy and drop to 17 or 18C at night on the beach.