United Kingdom 
In numbers.
Jul–Oct
Best months
663m
Elevation
The water at Devil's Appendix, month by month
It roars from October to February.
The fullest months: from October to February.
- 93%Jan
- 79%Feb
- 68%Mar
- 56%Apr
- 49%May
- 48%Jun
- 52%Jul
- 59%Aug
- 61%Sep
- 77%Oct
- 91%Nov
- 100%Dec
Best months to go, with plenty of water and pleasant days: from July to October.
Estimate from rain, snowmelt and evaporation month by month (NASA POWER, 1991–2020) around the falls. Dams upstream can change the real flow.
Waterfall in Gwynedd, Wales, UK
Devil's Appendix is a waterfall in United Kingdom.
Getting there.
- Llanberisnearest town · 6.3 km in a straight line
- Parking 1,600 m awaynearest car park in OpenStreetMap, straight line
- Liverpool John Lennon Airport (LPL)nearest airport with scheduled flights · 83 km in a straight lineCar hire at LPL airport (Liverpool)Discover Cars · Affiliate link↗
- From July to Octoberbest months to go (estimate)
Plan your visit
Stay, explore and get there
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
Seen from the sky.
8 × 8 km of cloud-free satellite image, with what OpenStreetMap knows around the falls.
N
2 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 8 × 8 km, north up. Points © OpenStreetMap contributors.
The line follows the river as mapped in OpenStreetMap; heights from the 30 m Copernicus model, which smooths narrow drops — the published height of the falls is the one above.
Around the falls the river drops 336 m in 1.1 km. Here the river runs about 147 m below the lower rim of its valley.
What is around.
- 1viewpointsTwll Du
- 5waymarked walking routesWelsh Three Thousands, Llwybr Llechi Eryri, Cambrian Way and 2 more
- 8car parks
- —swimming spots
- 3picnic sites
- 1toilets
- 1information boards and visitor centres
- —bus stops within 1 km
- 1other named waterfalls within 4 kmRhaeadr y Benglog
- 1caves
- 5campsitesGwern Gôf Isaf Campsite & Bunkhouses, Gwern Gof Uchaf Campsite, Pritchard's Campsite and 2 more
- 24hotels, B&Bs and huts within 6 kmSnowdonia Mountain Lodge, Y Gwynedd, Dol a Fon and 21 more
- 1restaurants and cafés within 3 km
Counted in OpenStreetMap, the map anyone can edit, up to 2 km around the falls (unless noted). A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Towns nearby
- Llanberis6.3 km in a straight line
- Deiniolen7.7 km in a straight line
- Bethesda8.1 km in a straight line
- Tregarth9.6 km in a straight line
- Llanrug12 km in a straight line
- Y Felinheli14 km in a straight line
- Blaenau-Ffestiniog14 km in a straight line
- Bangor14 km in a straight line
Weather
The weather, month by month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon °C | 3 | 3 | 5 | 8 | 11 | 14 | 15 | 15 | 13 | 10 | 6 | 4 |
| Night °C | 0 | -1 | 0 | 1 | 4 | 7 | 9 | 9 | 7 | 5 | 2 | 0 |
| Rain & snow (mm) | 126 | 104 | 94 | 77 | 87 | 99 | 112 | 119 | 108 | 135 | 142 | 148 |
| Wet days | 20 | 18 | 17 | 16 | 16 | 16 | 19 | 21 | 18 | 20 | 22 | 21 |
| Sun h/day | 1.1 | 2.4 | 4.1 | 5.9 | 6.7 | 6.3 | 6.1 | 5.4 | 4.4 | 2.6 | 1.4 | 0.9 |
| Snow on the ground (cm) | 6 | 6 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
Long-term averages 1991–2020 (NASA POWER) for a cell about 55 km wide, with temperatures carried to the height of the falls (663 m) at −6.5 °C per 1,000 m. Not a forecast.
Photos
Through visitors' eyes.
Recent years
Wet years and dry years
Rain of each month as a share of the 1991–2020 average. A wet season above 100 % usually means a fuller waterfall.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 94% | 262% | 116% | 53% | 22% | 142% | 134% | 138% | 77% | 152% | 102% | 156% |
| 2021 | 173% | 117% | 127% | 24% | 210% | 44% | 73% | 71% | 96% | 146% | 66% | 118% |
| 2022 | 42% | 185% | 47% | 67% | 91% | 53% | 58% | 43% | 106% | 111% | 116% | 77% |
| 2023 | 110% | 31% | 169% | 110% | 40% | 60% | 154% | 116% | 143% | 148% | 113% | 132% |
| 2024 | 133% | 150% | 139% | 153% | 122% | 59% | 96% | 82% | 112% | 79% | 56% | 119% |
| 2025 | 118% | 59% | 30% | 87% | 72% | 111% | 74% | 44% | 201% | 94% | 133% | 114% |
130% wetter than usual 70% drier than usual
Compare with the waterfalls nearby.
Devil's Appendix
United Kingdom
- —Height
- —Average flow
- Jul–OctBest months
About these numbers
| Names, height, width, river | Wikidata (Q5242595) · CC0 |
|---|---|
| Climate | NASA POWER, 1991–2020 |
| Relief, river profile, 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Paths, viewpoints, parking | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
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