Llyn Celyn
- Area
- 3.18 km²
- Tonight
- 5°CCloudy · Wind 20 km/h W
Llyn Celyn is a lake at 291 m above sea level in Wales, United Kingdom, 3.18 km² in area and 3.8 km long.
All facts
- Surface elevation
- 291 m
- Length
- 3.8 km
- Shoreline
- 11.6 km
Llyn Celyn in numbers
Shoreline from OpenStreetMap.
- Shoreline
- 11.6 km≈3 h to walk around
Llyn Celyn 3D map
Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 5.8 × 5.8 km
Llyn Celyn terrain and contours
20 m contours from the Copernicus GLO-30 terrain model. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.
Llyn Celyn elevation profile
West → east through the centre
Llyn Celyn weather
Tonight · Cloudy · 5°C (41°F) · 0.1 mm · Wind 20 km/h W
Llyn Celyn forecast for about 291 m.
- Tonight5°0.1 mm20 km/h W
- Today6°12°34.3 mm46 km/h W
- Sun6°8°3.0 mm41 km/h W
- Mon7°13°17.3 mm43 km/h SW
- Tue8°10°9.8 mm38 km/h SW
- Wed9°10°2.4 mm27 km/h W
- Thu8°10°0.2 mm16 km/h S
- Fri8°10°5.2 mm21 km/h SE
- Sat5°9°0.5 mm15 km/h W
- Sun3°6°4.8 mm16 km/h W
Forecast data: MET Norway, CC BY 4.0; daily low and high, precipitation total and strongest wind from the hourly data, model run Oct 24, 01:17 UTC.
Camping & parking near Llyn Celyn
Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Llyn Celyn, nearest first, by straight-line distance. Check access, fees and permits locally.
Nearest parking
0.4 km NE
Nearest hut
Arenig Fawr
Nearest campsite
Tyn Cornel
Nearest caravan site
Plas Moel-y-Garnedd
All mapped places 7
| Place | Distance |
|---|---|
| Parking | 0.4 km NE |
| Parking | 0.8 km NW |
| Parking | 1.4 km E |
| Arenig FawrHut | 2.9 km SSW |
| Tyn CornelCampsite | 3.4 km E |
| Cefn GwynHut | 5.7 km NNW |
| Plas Moel-y-GarneddCaravan site | 6.8 km SE |
Slope
Share of the 5.8 × 5.8 km view by steepness, from the 30 m model.
Mostly gentle: 85% of the view is under 15°.
- Steeper than 30°
- 1.1% of the 34 km² view
- Relief in view
- 530 m low point 239 m
Land cover
ESA WorldCover 10 m classification of the same area.
Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.
Wildlife seen nearby
Sightings of the most-seen species on iNaturalist (research grade) within 2.9 km; 59 species recorded in all.
Sightings per species 6
- Green-veined White3
- Sneezewort2
- Opposite-leaved Golden-saxifrage2
- Heath Bedstraw2
- Cross-leaved Heath2
- English Stonecrop2
Where Llyn Celyn sits
- Region
- Wales60United Kingdom371Europe2,143
Nearby places
Llyn Celyn downloads: topographic map, heightmap, STL 3D model and DEM
Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.
Print & wall
3D printing & 3D apps
GIS & GPS
Free to use with credit: see the data sources
Data sources
- Terrain
- Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
- Imagery
- Contains modified Copernicus Sentinel data 2026 (scene 2026-07-15)
- Land cover
- © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
- Facts
- Wikidata (CC0)
- Camping & parking, Geometry
- © OpenStreetMap contributors (ODbL)
- Summits
- © OpenStreetMap contributors, via Overture Maps Foundation (ODbL)
- Wildlife
- iNaturalist community observations, counts only
- Panorama
- Includes Copernicus WorldDEM-90 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
- Forecast
- Weather forecast from MET Norway (CC BY 4.0)