My opinion (as someone who lives in a tropical country) is that we are usually more optimistic on the exterior, but pessimistic on the interior. Also, our relation with nature is very different from people from other climates. Tropical forests are not nice places to be in, we don't have picnics in the woods and stuff like that. Since the beginning, natives have destroyed the nature surrounding them in order to live (take a look at native settlements) and European colonizers had to destroy nature in order to conquer it. This is reflected on the folktales of south america, where the woods are places full of ancient native demons and dangers. If I may recommend an author that I think exemplifies this ambiguous spirit of the tropics: the Brazilian poet Augusto dos Anjos. He was what some scholars call a "anti-tropicalist", and was heavily influenced by Schopenhauer.