Columbia's climate is warm and tropical along the coast and to the north. The country has a rainy season from May to November, which adds to the balmy weather.
Given Columbia's location near the equator, the temperature doesn't change much throughout the year. The exception to that is altitude. The higher up the mountains a person goes, the colder it gets. During the colder times of the year, the temperatures in the mountains can get down to freezing. However, the Amazon region tends to stay warm and wet year round. When it comes to traveling, it's best to visit Columbia during the drier months of the year. During the rainy season, it is possible to get stuck in hiking areas for several days because of slippery slopes and mud slides that take days to dry out.