Skip to content
Llyn y Fan Fach - Photo 1
1 / 3
Photo: Llyn y Fan Fach (1323880330).jpg via Wikidata Q3397034 License

Llyn y Fan Fach

Reservoir

Rainy today

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.

Interactive map not available

Weather at Llyn y Fan Fach

50°F, Heavy rain · H 47° / L 39° · 86% chance of rain
H: 47° L: 39°
Heavy rain
Heavy rain
50°
|
Feels like 48°
Precipitation
86%
Humidity
94%
Wind
5 mph
UV Index
0
Weather notes:
🌧️Rain expected
12 AM
Mist
41°
3 AM
Light rain
44°
6 AM
Patchy rain nearby
45°
9 AM
Light rain shower
42°
12 PM
Patchy rain nearby
43°
3 PM
Light rain shower
46°
6 PM
Patchy rain nearby
44°
9 PM
Clear
40°

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.

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
</> Embed this location on your site

Paste this snippet into your website to show a live badge for Llyn y Fan Fach — free to use with the included credit link.