Tide Table Porto — 2026

📘 About Porto Tide Forecast

In the northern hemisphere, the coastal area of Porto (Portugal) is positioned at coordinates 41.16° N and 8.63° W. Its tidal pattern is semi-diurnal (two high and two low tides per day), with a mean tidal range of 1.9m and spring tides reaching up to 2.7m. With 1.5–3 metre swings, high tide floods extensive tidal flats while low tide reveals coastal habitats important to local wildlife. The regularity of semi-diurnal tides — two highs and two lows approximately 6 hours apart — simplifies crossing planning and fishing scheduling. The coast here is influenced by large-scale ocean currents that modulate water temperature throughout the year. The 2026 tidal schedule for Porto provides a full-year calendar of high and low waters alongside predicted sea levels. In October, Porto is in its autumn season, a key period for water sports, fishing, diving, and coastal navigation. MaréAgora calculations use harmonic decomposition calibrated via satellite altimetry and local gauges to ensure high accuracy.