A few showers are likely across St. Vincent & the Grenadines during nightfall and into Tuesday morning as patches of moisture linger across the chain. On Tuesday, instability ahead of a tropical wave that inches closer to the island chain would allow for occasionally cloudy skies and a few sporadic showers with a slight chance of isolated thunderstorms. Late Tuesday into Wednesday, models suggests a medium chance of moderate showers and isolated thunderstorms as the wave affects the islands.