Updated
Llyn Llydaw (Welsh for 'Brittany lake') is a natural lake in Snowdonia National Park on the flanks of Snowdon, Wales' highest mountain. This long thin lake has formed in a cwm about one-third of the way up the mountain. It is one of the most visited lakes in the United Kingdom, in that many thousands of people every year visit Snowdon and many walk past this lake on the Miners' Track.
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Weather at Llyn Llydaw
49°F, Light drizzle · H 49° / L 38° · 89% chance of rain3-day forecast
H: 49° L: 38°
Light drizzle

49°
|
Feels like 47°
Precipitation
89%
Humidity
91%
Wind
5 mph
UV Index
0
Weather notes:
🌧️Rain expected
12 AM

46°
3 AM

48°
6 AM

43°
9 AM

39°
12 PM

38°
3 PM

38°
6 PM

43°
9 PM

43°
Frequently asked questions
- Where is Llyn Llydaw?
- Llyn Llydaw is a lake in Wales.
- Can you swim at Llyn Llydaw?
- There is no fixed answer for Llyn Llydaw: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Llyn Llydaw in Wales. Check current water conditions before you go, and follow posted signs and local guidance.
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Location & Contact
Wales
🏞️ Best times & visiting 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
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