Not sure where to go – end of November

I am UK based. I am trying to plan a 8 night honeymoon at the end of November but it seems to be rainy season everywhere. Looking for tropical beach, good snorkelling and maybe diving, wildlife and nature and ideally some culture. Happy to stay by a beach for part of the time and somewhere else for another part if this means I’ll have a nicer, more remote beach for part of the time and culture in the second part. Max budget including flights is £10k. Really enjoyed Flores last year – something similar would be great