All beaches / Wales / Beaches
Porth Neigwl
Gwynedd
We do not read the water company's overflow data here yet, so storm overflows within 3 km of Porth Neigwl are not shown.
The cleanest samples over the last four seasons.
- Latest E. coli
- <10
- per 100 ml, 17 Sep 2026
- Latest enterococci
- <10
- per 100 ml
- Overflows within 3 km
- -
- Spills nearby, 30 days
- -
- Excellent or Good
- Sufficient
- Poor
- Overflow discharging
- Overflow
- Offline
About this beach
This is a large beach on the southwest facing side of the Llŷn Peninsula. It is also known as Hell's Mouth, and is a popular spot with surfers. It is predominantly sandy in nature, with a pebbly foreshore. The area lies within the Sea cliffs of Llŷn Site of Special Scientific Interest and Special Area of Conservation, the Lleyn Peninsula and the Sarnau Special Area of Conservation, and the Llŷn Area of Outstanding Natural Beauty. The water quality sample point is in line with the car park.
From the Natural Resources Wales profile.
Storm overflows within 3 km
Nearest first, straight-line distance.We do not read the water company's overflow data here yet, so overflows within 3 km are not shown.