NWS San Juan Forecasts Heavy Showers, Thunderstorms, and Dangerous Heat for Puerto Rico and USVI

The National Weather Service in San Juan, PR, forecasts a wetter weather pattern for Puerto Rico and the U.S. Virgin Islands from Monday, July 27, to Tuesday, July 28, 2026, bringing heavy showers, thunderstorms, and localized flooding. A tropical wave is increasing activity, with some storms capable of producing heavy rainfall, gusty winds, and frequent lightning. Dangerous heat will persist where rainfall is limited, and a Heat Advisory remains in effect. Easterly winds will strengthen later in the week, leading to deteriorating marine conditions and an expanding moderate rip current risk.