Tide Table Porto Grande — 2026

📘 About Porto Grande Tide Forecast

In the northern hemisphere, the coastal area of Porto Grande (Portugal) is positioned at coordinates 16.87° N and 24.98° W. Its tidal pattern is semi-diurnal (two high and two low tides per day), with a mean tidal range of 0.5m and spring tides reaching up to 0.8m. With under 1.5m of variation, beaches maintain a relatively constant band of wet sand throughout the day. The regularity of semi-diurnal tides — two highs and two lows approximately 6 hours apart — simplifies crossing planning and fishing scheduling. Tidal dynamics in this bay or inlet are shaped by the geometry of its entrance, which can amplify or reduce range relative to the open sea. The 2026 tidal schedule for Porto Grande provides a full-year calendar of high and low waters alongside predicted sea levels. In September, Porto Grande is in its autumn season, a key period for water sports, fishing, diving, and coastal navigation. Reported times and heights derive from fundamental harmonic component analysis (M2, S2, K1, O1) applied to these coordinates.