Puerto Rico · Harmonic Tide Model
Tide Table Las Mareas — 2026
📍 Lat 17.9283, Lon -66.1583
Tide range. Higher values mean spring tides.
The moon drives the tides and the fish.
Radar de Chuva (Tempo Real)
Temperatura da Água
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Índice UV Atual
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🏖️ Recommended Activities
At low tide the waters tend to be calmer.
Access only within the 2 hours near the lowest tide.
Ask the skipper about the conditions.
🎣 Solunar Table
Major Periods (2h)
Minor Periods (1h)
Based on the Solunar Theory (John Alden Knight): fish and wildlife tend to feed more during the periods when the moon is overhead or underfoot (major) and at moonrise/moonset (minor). The score considers the lunar phase and the crossing of major periods with the local high tide.
Nearby places
📘 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 September, Las Mareas is in its autumn 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.
⚠️ Notice
Astronomical prediction from a harmonic model — does not account for storm surge, meteorological tide, or extreme events.