Japan full moon69 · CC BY 3.0
The cut
639 metres, to scale.
A slice through Ryūzu-kyō where it is deepest and narrowest, measured on the Copernicus relief model every 30 m. Same scale as the landmark standing on the floor.
Standing on the floor, to scale: Great Pyramid · 139 m · Empire State · 443 m
Depth is measured to the lower rim; the width is from rim to rim. A 30 m relief model smooths the narrowest walls, so a slot canyon reads shallower than it is.
639m
Depth
measured on the 30 m relief model
9.5km
Rim to rim
measured on the 30 m relief model
29°
Steepest wall
average over 300 m, from the relief
230m
Floor altitude
Rim to floor
4 °C warmer at the bottom.
In August the afternoon reaches 30 °C on the floor, against 26 °C on the rim. The best months to hike are in May and in October. The rim freezes at night from December to March. The wettest months are from June to July and in September.
- 6°2°Jan
- 8°4°Feb
- 12°8°Mar
- 18°13°Apr
- 22°18°May
- 26°21°Jun
- 29°24°Jul
- 30°26°Aug
- 26°22°Sep
- 21°16°Oct
- 15°10°Nov
- 9°4°Dec
Afternoon highs, 1991–2020 averages (NASA POWER) brought to the altitude of the rim and of the floor with the standard lapse rate (6.5 °C per 1 000 m). Shade, wind and rock change this on the day. Not a forecast.
Canyon in Akiota, Yamagata district, Hiroshima prefecture, Japan
Ryūzu-kyō is a canyon in Japan. The relief model measures 639 m from the floor to the lower rim. Rim to rim it is 9.5 km wide where the cut was taken.
Getting there.
- Togōchinearest town · 3.4 km in a straight line
- Parking 1,350 m awaynearest car park in OpenStreetMap, straight line
- Iwakuni Kintaikyo Airport (IWK)nearest airport with scheduled flights · 44 km in a straight lineCar hire in HiroshimaDiscover Cars · sponsored link↗
- In May and in Octoberbest months to hike (estimate)
Plan the visit
Guided hikes, a bed nearby, a car.
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.
From the sky.
The canyon from above, with the relief shaded, the line of the cut, the river and what people have mapped around it.
N
5 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 21 × 21 km, north up. The line is the cut above. Points © OpenStreetMap contributors.
Around the canyon.
- 2footbridges and suspension bridges within 3 km八幡原橋, 可部線跡
- 2car parks within 3 km
- 2hotels and guesthouses within 8 kmフルハウス戸河内, 戸河内旅館
- 5restaurants and cafés within 4 km
- viewpoints within 5 km
- marked hiking routes within 4 km
- via ferrata routes within 4 km
- climbing crags within 3 km
- rafting, canoe, kayak or canyoning spots within 4 km
- swimming spots within 3 km
- named waterfalls within 4 km
- caves within 3 km
- information boards and visitor centres within 4 km
- bus stops within 2 km
- campsites within 8 km
Counted in OpenStreetMap, the map anyone can edit, around the floor of the canyon. A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Towns nearby
- Togōchi3.4 km in a straight line
- Gion23 km in a straight line
- Hatsukaichi23 km in a straight line
- Hiroshima24 km in a straight line
In our other atlases
What else is around Ryūzu-kyō.
The river that carved it, the waterfalls inside it, the mountains on the rim, the lakes, beaches and island nearby — from our six sister atlases, each with its own figures.
Riveryas2 rivers in the canyon
Cascadyas1 waterfalls nearbyComing soon
Peakyas10 mountains within 15 kmFigures from the sister sites' databases (Wikidata, HydroATLAS, GeoNames, NOAA, OpenStreetMap). Links open when each site is online.
Month by month
The weather, at the floor and at the rim.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon · floor | 6 | 8 | 12 | 18 | 22 | 26 | 29 | 30 | 26 | 21 | 15 | 9 |
| Afternoon · rim | 2 | 4 | 8 | 13 | 18 | 21 | 24 | 26 | 22 | 16 | 10 | 4 |
| Night · rim | -6 | -5 | -3 | 2 | 7 | 12 | 17 | 18 | 13 | 7 | 1 | -4 |
| Rain (mm) | 63 | 75 | 109 | 125 | 146 | 211 | 260 | 122 | 170 | 113 | 79 | 84 |
| Rainy days | 11 | 10 | 12 | 11 | 10 | 14 | 14 | 12 | 13 | 10 | 10 | 11 |
| Sun hours/day | 3.3 | 3.9 | 5.1 | 6.0 | 6.5 | 4.7 | 4.9 | 6.4 | 5.1 | 5.1 | 4.1 | 3.0 |
| Snow on the ground (cm) | 9 | 8 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
| Afternoon · floor | Afternoon · rim | Night · rim | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | 6 | 2 | -6 | 63 | 3.3 |
| Feb | 8 | 4 | -5 | 75 | 3.9 |
| Mar | 12 | 8 | -3 | 109 | 5.1 |
| Apr | 18 | 13 | 2 | 125 | 6.0 |
| May | 22 | 18 | 7 | 146 | 6.5 |
| Jun | 26 | 21 | 12 | 211 | 4.7 |
| Jul | 29 | 24 | 17 | 260 | 4.9 |
| Aug | 30 | 26 | 18 | 122 | 6.4 |
| Sep | 26 | 22 | 13 | 170 | 5.1 |
| Oct | 21 | 16 | 7 | 113 | 5.1 |
| Nov | 15 | 10 | 1 | 79 | 4.1 |
| Dec | 9 | 4 | -4 | 84 | 3.0 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the floor (230 m) and the rim (935 m) with the standard lapse rate. Not a forecast.
Recent years
Wet years, dry years.
Rain of each month as a share of the 1991–2020 average. A dry year means a lower river and hotter rock; a wet one, more water in the gorge.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2020 | 152% | 93% | 115% | 135% | 75% | 136% | 203% | 11% | 112% | 89% | 62% | 86% |
| 2021 | 118% | 80% | 107% | 90% | 163% | 70% | 109% | 454% | 138% | 29% | 140% | 50% |
| 2022 | 43% | 36% | 106% | 111% | 32% | 48% | 96% | 106% | 130% | 45% | 63% | 44% |
| 2023 | 100% | 79% | 73% | 218% | 238% | 163% | 108% | 76% | 64% | 21% | 81% | 82% |
| 2024 | 103% | 193% | 159% | 135% | 130% | 147% | 108% | 134% | 47% | 210% | 271% | 25% |
| 2025 | 31% | 67% | 151% | 89% | 168% | 128% | 34% | 219% | 195% | 125% | 62% | 73% |
130% or more: wet month 70% or less: dry month
Compare with the neighbours.
Ryūzu-kyō
Japan
- 639 mDepth
- 9.5 kmRim to rim
- —Length
- 29°Steepest wall
Where these figures come from
| Name, type, published depth and length | Wikidata (Q109595880) · CC0 |
|---|---|
| The cut: depth, width, wall and 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Climate | NASA POWER, 1991–2020 |
| Viewpoints, trails, bridges and the river line | © OpenStreetMap contributors · ODbL |
| Images | EOX Sentinel-2 cloudless 2016 · CC BY 4.0; Wikimedia Commons |
| Rivers, waterfalls, mountains, lakes, beaches and islands nearby | Coastya, Lakeyas, Peakyas, Cascadyas, Islandyas, Riveryas |
Every figure is an average, an estimate or a count from a public dataset. Licences and methods: data sources.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers or canyons?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.
beaches
Find your beach: sea temperature, sun and swimming month by month.Visit 
lakes
Every lake on Earth: water temperature, ice, depth and the shore.Coming soonVisit mountains
Every summit in 3D: summit weather, the 0 °C line, huts and trails.Visit waterfalls
Every waterfall: height, flow month by month and when it roars.Coming soonVisit 
islands
Every island from the sea up: size, sea temperature, ferries and 3D.Visit rivers
Every river from source to sea: the journey, the flow and the basin in numbers.Visit 
canyons
Every canyon cut to scale: depth to the floor, rim and floor temperatures, trails and viewpoints.You are here