Can you swim at Cemaes?

Caution. Annual classification is only Sufficient. Cemaes is a designated bathing water, so it is sampled and rated every season. This answer covers water quality only, not tides, currents or lifeguard cover.

What is the water quality like at Cemaes?

Cemaes is rated Sufficient in the regulator's latest annual classification, a percentile taken over readings from up to four bathing seasons. The most recent sample, taken 13 August 2026, showed 18 cfu/100ml of E. coli and 91 cfu/100ml of intestinal enterococci.

Has there been sewage at Cemaes recently?

We do not have a live storm-overflow feed for Cemaes, so we cannot say whether one has discharged nearby.

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Wales · Isle of Anglesey

Wednesday 2 September

Cemaes

Caution. Annual classification is only Sufficient.

Water quality only This says nothing about tides, rip currents, cold water shock or lifeguard cover. Cold water and currents are dangerous even when the water is clean. Read the local signs before you go in. What we cannot tell you.

Checked 03:24 UK time

Why this verdict

Annual classification: Sufficient (neutral factor)
Pollution risk forecast: Normal (positive factor)
Latest E. coli: 18 cfu/100ml (positive factor)
Latest intestinal enterococci: 91 cfu/100ml (positive factor)

Latest bacteria reading

Latest sample · 13 August 2026 · 3 weeks ago

E. coli: 18cfu/100ml
Intestinal enterococci: 91cfu/100ml

The regulator samples weekly during the bathing season. E. coli and intestinal enterococci are the indicator organisms used in the official classification.

Common questions

Can you swim at Cemaes?: Caution. Annual classification is only Sufficient. Cemaes is a designated bathing water, so it is sampled and rated every season. This answer covers water quality only, not tides, currents or lifeguard cover.
What is the water quality like at Cemaes?: Cemaes is rated Sufficient in the regulator's latest annual classification, a percentile taken over readings from up to four bathing seasons. The most recent sample, taken 13 August 2026, showed 18 cfu/100ml of E. coli and 91 cfu/100ml of intestinal enterococci.
Has there been sewage at Cemaes recently?: We do not have a live storm-overflow feed for Cemaes, so we cannot say whether one has discharged nearby.

Where this data comes from

View the regulator's full profile

Other beaches nearby

Rated Excellent Church Bay Isle of Anglesey Rated Excellent Traeth Lligwy Isle of Anglesey Rated Good Trearddur Bay Isle of Anglesey Rated Good Benllech Isle of Anglesey

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Gareth Clubb