Tide Table Boston — 2026

📘 About Boston Tide Forecast

The coordinates for Boston (42.36° N, 71.06° W) place this stretch of United States's coast in the northern hemisphere. Its tidal pattern is semi-diurnal (two high and two low tides per day), with a mean tidal range of 2.6m and spring tides reaching up to 3m. The 1.5–3m range generates noticeable channel currents that paddlers and racers must account for when planning routes. Bathers and stand-up paddlers can choose between morning and afternoon high tides for calm-water conditions. The coast here is influenced by large-scale ocean currents that modulate water temperature throughout the year. Review the annual 2026 tide guide for Boston, constructed with continuous high and low water forecasts measured in metres. In September, Boston 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.