In November I took a trip to Costa Rica. It was supposed to be the end of the rainy season. However, a tropical storm came through and they got about 10x the amount of rain they normally get in November in 1 week. And I happened to be there for it all. My group and I weren't going to let that ruin our fun.
Here is one of our adventures in the rain, going to the Rio Negro Hot Springs in Guanacaste.