Chaac was the Mayan god associated with rain and lightning.
Chaac was a major rain deity in Maya religion, also connected with thunder and agriculture. Maya traditions often treated him as both one god and a group of four rain beings linked to the cardinal directions. Their colors and names could vary by region, reflecting the diversity of Maya communities across Mesoamerica.
Artists commonly portrayed Chaac with reptilian or amphibian features, prominent fangs, and a long, curved nose. His most famous attribute was a lightning axe, which he used to strike clouds and release thunder and rain. This imagery connected storms directly to the success of crops, especially maize.
Chaac is sometimes confused with Tlaloc, but Tlaloc was the principal rain deity of the Aztecs. The two gods are comparable figures from different Mesoamerican religious traditions, not alternate names for the same deity. Rain ceremonies dedicated to Chaac continued in parts of Yucatán, including the Ch'a Cháak ritual.