| NWS Forecast for: Caribbean Waters of Puerto Rico from 10 NM to 17N, including the Coastal Waters of Saint Croix (AMZ733) Issued by: National Weather Service San Juan, PR Last Update: 255 AM AST Tue Sep 15 2026 |  |
| Today: East winds 15 to 20 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave detail: east 4 feet at 6 seconds and east 1 foot at 9 seconds. Scattered showers until late afternoon. Isolated thunderstorms late this morning. Isolated showers late. Tonight: East winds 15 to 20 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave detail: east 4 feet at 6 seconds and northeast 1 foot at 9 seconds. Scattered showers in the evening. Wednesday: East winds around 15 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave detail: east 4 feet at 7 seconds. Scattered showers in the afternoon. Wednesday Night: East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 4 feet at 6 seconds. Numerous showers, mainly in the evening. Thursday: East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 6 seconds. Scattered showers in the morning, then showers in the afternoon. Thursday Night: East winds around 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 6 seconds. Numerous showers. Friday: East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers in the morning. Friday Night: East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Saturday: East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Saturday Night: East winds 10 to 15 knots. Seas 2 to 3 feet. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Caribbean Waters of Puerto Rico from 10 NM to 17N, including the Coastal Waters of Saint Croix (AMZ733) | |
Visit your local NWS office at: https://www.weather.gov/sju |