Portstewart Strand, Co. Derry — Swimming, Tides, Access & Sea Temperature Guide | Wild Beauty
Portstewart Strand
Portstewart Strand — blue flag national trust strand in Co. Derry.
About Portstewart Strand
Portstewart Strand is two miles of firm golden sand backed by a towering wall of dunes, running from the edge of Portstewart town toward the mouth of the River Bann.
Cared for by the National Trust and flying a Blue Flag, it's one of the few beaches in Northern Ireland you can still drive onto and park right on the sand — a classic Causeway Coast day out.
Swimming & safety
Portstewart Strand is a Blue Flag beach for 2026 — certified water quality, good facilities and lifeguard cover through the bathing season. Lifeguards patrol through the bathing season (roughly June to September), with RNLI lifeguards on the main strands. Swim within the flagged area when they're on duty, and mind the tide, currents and any offshore wind.
Tides & conditions
The beach changes through the day with the tide, and swimming can shift from easy to lively as the wind and swell get up. Check the live tide, wind and sea-temperature page for Portstewart Strand before you travel — you can scrub forward to any date to plan a swim.
Getting there & facilities
Drive onto the beach and park on the sand (a National Trust charge applies); there's a visitor facility and the dunes hold a rich nature reserve, so keep to the marked routes. RNLI lifeguards patrol in season, and the town of Portstewart with its promenade is close by.
Nearby
From Portstewart Strand, Portrush, the Giant's Causeway and the River Bann are close by.
Reviews
See what other swimmers and visitors say — read reviews of Portstewart Strand on Google Maps →
Frequently asked questions
When is the best time to swim at Portstewart Strand?
It depends on the tide, wind and swell. Check the live tide, wind and sea-temperature page for Portstewart Strand and pick a calm window around the right state of tide.
Is Portstewart Strand a Blue Flag beach?
Yes — Portstewart Strand holds a Blue Flag for the 2026 season, with lifeguard cover through the summer.
Is Portstewart Strand lifeguarded?
Portstewart Strand has lifeguards through the summer — see the safety notes above.
What is the sea temperature at Portstewart Strand today?
The current sea temperature and its 24-hour trend are shown live on the conditions page for Portstewart Strand.