Portsmouth is a historic coastal city on the South Coast of England, surrounded by the waters of the Solent and Portsmouth Harbour. With its busy waterfront, marinas, beaches and strong maritime heritage, the tide is an important consideration for boating, fishing, walking and exploring the coastline. Use our Portsmouth tide times to check today’s predicted high and low tides, along with the full 7-day forecast, and plan your time by the coast around the changing tide.