The climate is subtropical and rainy. The average temperature at Georgetown is 27°c (81°f); there is little seasonal variation in temperature or in humidity, which averages 80–85%. Rainfall averages 229 cm (90 in) a year along the coast, falling in two wet seasons (May to July and November to January) and 165 cm (65 in) in the southwest, where there is a single wet season, extending from April through August.