April in Key West typically offers warm, sunny days with average high temperatures around 80F (27C) and lows near 70F (21C). Sea temperatures are also pleasant, usually in the low 80s, making it ideal for swimming and watersports. Rainfall is relatively low compared to other times of the year. This month marks the transition from the dry season to the wetter summer months, although precipitation is still generally limited to brief afternoon showers.
These agreeable conditions make April an attractive time to visit Key West, providing a balance between pleasant warmth and lower humidity. The calmer seas are favorable for boating and fishing, while the warm sunshine allows for outdoor activities and exploration of the island’s historical sites and natural beauty. Historically, April has been a popular period for tourism, contributing significantly to the local economy.