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Cemaes

Isle of Anglesey, Wales
Sufficient Water Quality
Data last verified: 08 Aug 2026

Characterized by its sand and shingle terrain, Cemaes is a designated bathing area in Isle of Anglesey, Wales. Environmental sampling at the site provides an annual water quality classification of Sufficient. First designated in 1998, this location remains a popular destination for recreational visits.

15.6°C
Air Temp
15.8 mph
Wind Speed
Low Tide
in 5h 5m
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Live Water Quality

60
Sufficient
Safe for swimming
Updated 10 mins ago
Today's Conditions Updated 10 mins ago

Lifeguards

Unknown
Help us verify

Air Temp

15.6°C
Comfortable

Weather

Partly cloudy
15.6°C

Tide

Low Tide
in 5h 5m

Water Quality

Sufficient
Safe for swimming

Pollution Alerts

None
No alerts today

Quick Overview

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

Beach Information View all details

Beach Type
Sand, Shingle
Water Quality
Sufficient
Avg. Air Temp
15.6°C
Swimming
Highly recommended

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Nearby Businesses View all

Caffi Banc Cemaes
cafe
4.8 • 120m away
Caffi Bach - Traeth Mawr
cafe
4.8 • 120m away
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Reference Information

Full Tide Times
High 06:51 1.6m
Low 13:16 -1.5m
High 19:31 1.7m
Low 02:03 -1.7m
Sediment Type
Sand, Shingle

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

Annual Rating
Sufficient

Water complies with minimum legal safety limits. However, higher bacterial levels are occasionally recorded, indicating moderate vulnerability to runoff.

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
1998

Officially designated as a protected bathing water site in 1998. 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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