Kenya’s rainy season lasts from April to June and October to early December. It’s hot and humid on the coast all year round, but onshore breezes make it more comfortable. It’s hot and dry in the lowlands while the highlands are more temperate and cooler at night. October-January, though still off-peak, is the best time to book trips to Kenya for snorkeling as the seas are at their clearest. January and February are the hottest and driest months, however, it can be easy to spot wildlife congregating around water holes.