Tide Table Las Mareas — 2026

📘 About Las Mareas Tide Forecast

The coordinates for Las Mareas (17.93° N, 66.16° W) place this stretch of Puerto Rico's coast in the northern hemisphere. Its tidal pattern is diurnal (one high and one low tide per day), with a mean tidal range of 0.2m and spring tides reaching up to 0.3m. The weak tidal amplitude results from the geometry of the ocean basin, which does not amplify incoming tidal waves. On diurnal coasts, flood and ebb currents tend to be more prolonged, lasting nearly 12 consecutive hours in each direction. Nearby submarine topography concentrates tidal currents into defined channels, altering local navigation conditions. The 2026 tidal schedule for Las Mareas provides a full-year calendar of high and low waters alongside predicted sea levels. In July, Las Mareas is in its summer season, a key period for water sports, fishing, diving, and coastal navigation. Predictive output is continuously benchmarked against time series recorded by regional coastal reference stations.