Updated

Llyn y Fan Fach
Reservoir
Llyn y Fan Fach (Welsh meaning "little lake of the peak") is a lake of approximately 10 hectares (25 acres) on the northern margin of the Black Mountain in Carmarthenshire, South Wales and lying within the Brecon Beacons National Park. The lake lies at an altitude of approximately 1,660 feet (510 m), immediately to the north of the ridge of the Carmarthen Fans. It is the smaller of two lakes within this mountain massif: the slightly larger Llyn y Fan Fawr is about 2 miles (3.2 km) to the east.
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Weather at Llyn y Fan Fach
50°F, Heavy rain · H 47° / L 39° · 86% chance of rain3-day forecast









Frequently asked questions
- Where is Llyn y Fan Fach?
- Llyn y Fan Fach is a reservoir in Wales.
- Can you swim at Llyn y Fan Fach?
- There is no fixed answer for Llyn y Fan Fach: 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 Fach 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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