NI Beaches
Portstewart

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Portstewart

North Coast · National Trust

National Trust strand and dunes at the western edge of the town.

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Conditions now

Air 9°C Partly cloudy
Swell 0.7m period 8 s · NW
Rain 1mm last 48 hours

Water quality

A designated bathing water: DAERA samples it weekly through the bathing season (1 June–15 September).

Latest sample 14 Sep 2026: Excellent — E. coli 10, intestinal enterococci 10 CFU/100 ml

OldestMost recent
Sample history (40 shown)
DateE. coliEnt.RatingAlgae
14 Sep 2026 10 10 Excellent —
9 Sep 2026 26 14 Excellent —
4 Sep 2026 10 10 Excellent —
1 Sep 2026 10 10 Excellent —
28 Aug 2026 10 10 Excellent —
24 Aug 2026 10 10 Excellent —
20 Aug 2026 10 10 Excellent —
12 Aug 2026 10 10 Excellent —
6 Aug 2026 24 10 Excellent —
30 Jul 2026 10 10 Excellent —
29 Jul 2026 12 10 Excellent —
21 Jul 2026 10 10 Excellent —
16 Jul 2026 10 10 Excellent —
7 Jul 2026 10 10 Excellent —
1 Jul 2026 270 20 Good —
23 Jun 2026 13 10 Excellent —
19 Jun 2026 10 10 Excellent —
15 Jun 2026 10 10 Excellent —
3 Jun 2026 10 10 Excellent —
3 Jun 2026 10 0 Excellent —
3 Jun 2026 0 0 Advice against bathing —
27 May 2026 10 10 Excellent —
3 Nov 2025 0 0 Excellent —
27 Oct 2025 0 0 Advice against bathing yes
28 Sep 2025 0 0 Excellent —
21 Sep 2025 0 0 Advice against bathing yes
15 Sep 2025 10 10 Excellent —
9 Sep 2025 15 11 Excellent —
1 Sep 2025 10 10 Excellent —
29 Aug 2025 10 10 Excellent —
21 Aug 2025 10 10 Excellent —
12 Aug 2025 10 10 Excellent —
6 Aug 2025 10 10 Excellent —
1 Aug 2025 12 10 Excellent —
28 Jul 2025 10 10 Excellent —
25 Jul 2025 10 10 Excellent —
17 Jul 2025 10 10 Excellent —
9 Jul 2025 11 10 Excellent —
1 Jul 2025 10 10 Excellent —
26 Jun 2025 10 10 Excellent —

Weekly lab samples, not real-time. Avoid bathing for 48 h after heavy rain. Bathing Water Profile (PDF).

Sewage & storm overflows

4 NI Water storm overflows within 1.2 mi — 2 rated Unsatisfactory.

Modelled~28 spills/yrNI Water's prediction, all 4 combined
Measured in 202534 spills43 h · 11 in the bathing season · 3 of 4 monitored
OverflowDistanceClassificationModelled spills/yrMeasured 2025
Winston Drive Regent CSO
→ Bush
830 yd Satisfactory — 0 spills
0 in season · 0 h
Berrins WwPS
→ Bush
0.5 mi Unsatisfactory ~18 32 spills
10 in season · 42 h
Crescent Portstewart WwPS
→ Portstewart Bay
0.9 mi Unsatisfactory ~10 2 spills
1 in season · 1 h
The Crescent CSO
→ Portstewart Bay
0.9 mi Satisfactory — —
How these are counted

“Modelled” is NI Water's hydraulic-model prediction of spills per year. “Measured” is from NI Water's event duration monitors, counted with the industry 12/24 method (discharges within the same 12- or 24-hour block count as one spill); the bathing-season figure (1 Jun–15 Sep) is our count from NI Water's published discharge log. An overflow with no monitor isn't known to be dry. Classification is NI Water's own.

Nearest wastewater treatment works: Dartress WwTW (2.1 mi → Bann Brook) · Bellany WwTW (2.2 mi → Bann Brook).

Amenities & features

Parking 3
Toilets 1
Cafes & food e.g. Harry's Shack 3

Dogs, access & rules

Seasonal dog restrictions Cars allowed on the sand
  • Dogs: National Trust strand: dogs must be on a lead near the bathing area and away from the tern-nesting fenced zone; a seasonal dog exclusion applies to the central beach. Council byelaw
  • Vehicles on the sand: National Trust — drive onto and park on the strand (fee); closed when the tide or conditions require. (Editorial)

Rules and dates vary by council and season — check the signage at the entrance.

Boating — nearest harbours & marinas

  • Portstewart Harbour · Council · Causeway Coast & Glens 1.2 mi
  • Portrush Harbour · Council · Causeway Coast & Glens 3.7 mi
  • Portandhu Slipway · Causeway Coast and Glens 4.1 mi
2 more further away
  • Portballintrae Harbour · Council · Causeway Coast & Glens 8.0 mi
  • Dunseverick Harbour · Council · Causeway Coast & Glens 12.8 mi

Wildlife & designations

This beach lies in or within 0.6 mi of:

Alerts & advisories

Rip currents on surf beaches

The open Atlantic strands generate strong rip currents, particularly around low tide and after big swell. Swim between the red-and-yellow flags at lifeguarded beaches in season, never alone, and if caught in a rip do not swim against it: raise a hand, float, and let it carry you out until it releases.