Porth Iago
Safety warning
- No lifeguard service
- There is no lifeguard cover at Porth Iago. Take extra care before entering the water and avoid swimming in rough or unfamiliar conditions. — Local beach guidance
- Not a designated bathing water
- Not monitored under the Bathing Water Directive, so there is no classification, no sampling and no pollution alerting for it. — NRW bathing water register
Not monitored
Porth Iago is not a designated bathing water, so no water-quality classification, sampling or pollution alerting applies to it and we cannot tell you anything about the water today. There is no lifeguard service. Assess conditions yourself before entering the water.
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Sea conditions
Water temperature
15.5°C
Cool — comfortable for a shorter swim
Wave height
1.0 m
Significant wave height offshore; inshore conditions vary.
Tide
Going out
- Low water around UTC
- High water around UTC
Modelled values, not measurements — coastal water often differs from the open-sea model, and tide times are approximate to within about half an hour. Use official tide tables for anything that depends on precise timing.
About this spot
Porth Iago is a small west-facing sandy cove on the north coast of the Llŷn Peninsula, reached through farmland and fairly sheltered by the headlands on either side.
Common questions
- Can you swim at Porth Iago right now?
- Porth Iago is currently marked "Not monitored". Porth Iago is not a designated bathing water, so no water-quality classification, sampling or pollution alerting applies to it and we cannot tell you anything about the water today. There is no lifeguard service. Assess conditions yourself before entering the water. Conditions change quickly — always assess the water yourself before entering.
Get told when this changes
We’ll email you when the swim status at Porth Iago moves — a pollution alert opening, or one lifting. Not a newsletter: only this spot, only when it changes, at most once every 12 hours.
Your address is used for these alerts and nothing else, is never shared, and is deleted the moment you unsubscribe — a link is in every email.