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Photo: Llyn Cwmffynnon - geograph.org.uk - 222106.jpg via Wikidata Q6662934 License
Llyn Cwmffynnon
Lake
Cool today
Llyn Cwm-y-ffynnon is a lake in Snowdonia, below the summit of Moel Berfedd in Cwmffynnon. The lake's original name was Fynnon Mymbyr as outlined in Llywelyn ap Iorwerth's charter of 1198. As the name suggests, the lake nestles in a short valley, a cwm, high above the Pen-y-Gwryd hotel.
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Weather at Llyn Cwmffynnon
46°F, Mist · H 48° / L 40° · 88% chance of rain3-day forecast
H: 48° L: 40°
Mist

46°
|
Feels like 44°
Precipitation
88%
Humidity
96%
Wind
4 mph
UV Index
1
12 AM

47°
3 AM

46°
6 AM

48°
9 AM

46°
12 PM

42°
3 PM

41°
6 PM

43°
9 PM

48°
Frequently asked questions
- Where is Llyn Cwmffynnon?
- Llyn Cwmffynnon is a lake in Wales.
- Can you swim at Llyn Cwmffynnon?
- There is no fixed answer for Llyn Cwmffynnon: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Llyn Cwmffynnon 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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