Puerto Rico · Harmonic Tide Model
Tide Table Arecibo — 2026
📍 Lat 18.4805, Lon -66.7024
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 Arecibo Tide Forecast
Arecibo is located at 18.48° N, 66.70° W on the coast of Puerto Rico, in the northern hemisphere. Its tidal pattern is mixed semi-diurnal (unequal tidal heights across the day), with a mean tidal range of 0.5m and spring tides reaching up to 0.6m. Tides have a moderate range of 0.5 to 1.5 metres, creating gentle currents that influence shore fishing. Significant diurnal inequality in mixed tides generates stronger currents when falling from the higher high water to the lower low water. Coastal water salinity varies with rainy seasons, creating gradients that influence the distribution of marine species. Review the annual 2026 tide guide for Arecibo, constructed with continuous high and low water forecasts measured in metres. In September, Arecibo is in its autumn season, a key period for water sports, fishing, diving, and coastal navigation. All tide predictions are computed from harmonic constants validated for this coastal station, with accuracy within ±15 minutes for most conditions.
⚠️ Notice
Astronomical prediction from a harmonic model — does not account for storm surge, meteorological tide, or extreme events.