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Llyn Peris - Photo 1
Photo: Chwarel Dinorwig World Heritage Site, from a drone 01.jpg via Wikidata Q3401781 License

Llyn Peris

Reservoir

Cool today

Llyn Peris is a lake in Snowdonia, Wales, approximately 1.8 km long and situated close to the villages of Llanberis and Nant Peris, and the smaller twin of Llyn Padarn. The lake was formed glacially and is an example of a moraine-dammed lake. Llyn Peris is named after Saint Peris, an early Christian saint of whom little is known.

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Weather at Llyn Peris

H: 65° L: 44°
Sunny
Sunny
53°
|
Feels like 50°
Precipitation
8%
Humidity
87%
Wind
8 mph
UV Index
0
Water Conditions:
🥶Too cold for most swimmers
12 AM
Clear
46°
3 AM
Clear
45°
6 AM
Clear
44°
9 AM
Sunny
54°
12 PM
Sunny
61°
3 PM
Sunny
65°
6 PM
Sunny
63°
9 PM
Clear
49°

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Frequently asked questions

Where is Llyn Peris?
Llyn Peris is a reservoir in Wales.
Can you swim at Llyn Peris?
There is no fixed answer for Llyn Peris: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Llyn Peris in Wales. Check current water conditions before you go, and follow posted signs and local guidance.

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Best Times to Visit

🧥
Right Now
Cool weather - dress warmly
🏞️ Lakes Tips:
  • Check for boat launch facilities and fees
  • Obtain required fishing licenses before arrival
  • Be aware of lake-specific regulations and restrictions
  • Monitor water quality reports before swimming
Best Seasons:
☀️ Summer (Jun-Aug)🍂 Fall (Sep-Nov)🌸 Spring (Mar-May)

Location & Contact

Wales

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