Tide Table Portsmouth — 2026

📘 About Portsmouth Tide Forecast

Portsmouth is located at 50.80° N, 1.11° W on the coast of United Kingdom, in the northern hemisphere. Its tidal pattern is semi-diurnal (two high and two low tides per day), with a mean tidal range of 2.5m and spring tides reaching up to 3.3m. The broad tidal flats exposed each cycle attract flocks of migratory shorebirds feeding on invertebrates uncovered by the ebb. Mariners in semi-diurnal areas benefit from two high-water windows each day to cross shallow bars or enter marinas. The speed and direction of tidal currents here vary seasonally with the region's prevailing winds. Access the updated 2026 tide table for Portsmouth featuring exact high and low water times, ranges, and coefficients for boating and angling. In July, Portsmouth is in its summer 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.