May temperatures in Belize climb to an average high of 87°F (31°C) and fall to around 79°F (26°C), with an overall monthly average of 82°F (28°C). If there is rain, it will most likely be in the morning, with the occasional thunderstorm at night.
High on the list of Belize’s many charms is a very comfortable tropical climate with an average yearly temperature of 84° F (29°C). Costal sea breezes and Belize’s large tracts of jungle and rainforests provide cooling relief even in the hottest summer months while winters can be cool but never very cold. In short, the climate is pretty much near perfect.