Scott....those weather patterns are just plain wierd
It's basically the same for almost tropical areas worldwide due the Intertropical Convergence Zone.
The rainy season follows the sun. When the sun is north of the equator, this is the rainy season in the tropics north of the equator and when the sun is south of the equator, that is their rainy season.
The tropics north of the equator are a mirror image of Peru and Bolivia. See the cities below which are similar distances from the equator, but in the opposite direction.
If you get close enough to the equator, you can actually have two wet and dry seasons because the sun crosses the equator twice.
There are a few exceptions (i.e. much of Hawaii, some of the Caribbean Coast, parts of Ecuador), but for the most part it's like this world wide in the tropics and quite predictable.