Updated
Llyn y Fan Fawr (Welsh for 'great lake of the peak') is a natural lake in the county of Powys, Wales. It lies at the foot of Fan Brycheiniog, the highest peak of the Black Mountain (Y Mynydd Du) range within the Brecon Beacons National Park. Created as a result of glacial action, it is one of the largest glacial lakes in southern Wales.
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Weather at Llyn y Fan Fawr
52°F, Light rain · H 47° / L 40° · 87% chance of rain3-day forecast
H: 47° L: 40°
Light rain
52°
|
Feels like 51°
Precipitation
87%
Humidity
88%
Wind
5 mph
UV Index
0
Weather notes:
🌧️Rain expected
12 AM
41°
3 AM
47°
6 AM
45°
9 AM
42°
12 PM
42°
3 PM
46°
6 PM
44°
9 PM
40°
Frequently asked questions
- Where is Llyn y Fan Fawr?
- Llyn y Fan Fawr is a lake in Wales.
- Can you swim at Llyn y Fan Fawr?
- There is no fixed answer for Llyn y Fan Fawr: whether it is safe to swim there on a given day depends on the water temperature, recent rainfall, and any advisories posted at Llyn y Fan Fawr 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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