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Traeth Lligwy

Isle of Anglesey, Wales
Excellent Water Quality
Data last verified: 27 Sep 2026

Traeth Lligwy, a picturesque beach on the Isle of Anglesey in Wales, boasts a stunning shoreline characterised by a mix of rock and sand. The beach consistently achieves an Excellent water quality rating, as monitored by Natural Resources Wales, making it an ideal destination for swimming and water activities. During the summer months, the water temperature at Traeth Lligwy typically ranges from 15°C to 18°C.

10.9°C
Air Temp
9.4 mph
Wind Speed
High Tide
in 3h 48m
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Live Water Quality

95
Excellent
Safe for swimming
• Updated 10 mins ago
Today's Conditions • Updated 10 mins ago

Lifeguards

Unknown
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Air Temp

10.9°C
Comfortable

Weather

Clear sky
10.9°C

Tide

High Tide
in 3h 48m

Water Quality

Excellent
Safe for swimming

Pollution Alerts

None
No alerts today

Quick Overview

Sand & Rocky beach
Family friendly
Dog friendly
(winter)
Parking nearby
Toilets
Café

Beach Information View all details

Beach Type
Rock, Sand
Water Quality
Excellent
Avg. Air Temp
10.9°C
Swimming
Highly recommended

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The Boathouse
british restaurant
4.8 • 120m away
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Reference Information

Full Tide Times
Low 18:07 -3.4m
High 00:03 3.8m
Low 06:29 -3.6m
High 12:22 3.5m
Sediment Type
Rock, Sand

The shoreline consists primarily of rock, sand. Sediment type dictates underfoot comfort, wave energy absorption, and the water's clarity when currents stir up the seabed.

Annual Rating
Excellent

Water quality is classified as excellent, meeting the highest cleanliness standards. Bacterial counts (E. coli & Intestinal Enterococci) are consistently low, posing negligible health risks.

Rainfall Impact
High Risk

Bacterial levels are highly susceptible to storm runoff. Heavy rainfall in the local catchment is likely to trigger storm overflows and agricultural runoff, rendering the water temporarily unsafe.

Monitoring Authority
Environment Agency

Tested weekly by the Environment Agency England for bacteria levels (E. coli & Intestinal Enterococci) between May and September.

Water Body Type
Coastal Beach

Monitored as a coastal beach. Coastal beaches are subject to tidal flows and marine dilution, whereas inland lakes/rivers suffer from low water circulation, meaning bacteria can linger longer.

Sewerage Provider
Unknown

Unknown is the regional utility responsible for waste water treatment, sewage infrastructure, and storm overflow management in this catchment area.

Designated Year
2003

Officially designated as a protected bathing water site in 2003. This designation mandates regular public health monitoring.

County / District
Isle of Anglesey

Governed under local district sanitation and environmental safety regulations in the Isle of Anglesey area.

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