San Juan, Puerto Rico, in April typically experiences the transition from the dry season to the wetter months. Daily temperatures average around 82F (28C), with overnight lows dipping to about 75F (24C). Ocean temperatures hover around a pleasant 80F (27C). Rainfall increases slightly compared to the preceding months, but remains relatively moderate, averaging around 2-3 inches for the entire month. This period offers comfortable conditions with warm days, pleasant evenings, and lower humidity than the summer months.
This time of year presents an ideal balance for visitors seeking outdoor activities. The moderate rainfall and comfortable temperatures allow for exploring historical sites, enjoying beaches, and participating in watersports without the intense heat and humidity of summer or the risk of hurricane season. Historically, April falls outside of the Atlantic hurricane season, offering a statistically safer period for travel. The pleasant conditions contribute positively to the local economy, supporting tourism and outdoor recreation.