Chiapas is located in the tropical belt of the planet, but the climate is moderated in many areas by altitude. For this reason, there are hot, semi-hot, temperate and even cold climates. Some areas have abundant rainfall year-round and others receive most of their rain between May and October, with a dry season from November to April. The mountain areas affect wind and moisture flow over the state, concentrating moisture in certain areas of the state. They also are responsible for some cloud-covered rainforest areas in the Sierra Madre.