France Show cave
Grottes de la Devèze-Roquebleue
12 °C inside, all year.
matthias loiseau · CC BY-SA 4.0
The descent
The entrance, at 410 m.
The real relief above Grottes de la Devèze-Roquebleue, measured on the Copernicus model every 30 m, and the cave going down at the same vertical scale.
The depth is the one published by those who explored it; the shape of the galleries is a sketch, not a survey. No depth has been published for this cave yet.
410m
Entrance altitude
from the 30 m relief model
12°C
Inside, all year
the yearly average outside, at the entrance
219m
Rock above
the highest point within 1.5 km
Inside and outside
12 °C inside, all year.
Deep inside, a cave keeps the average temperature of the year outside: about 12 °C here, in January and in August. In July the afternoon reaches 29 °C at the entrance, 16 °C warmer than inside: take a jacket. The best months to escape the heat are from July to August.
- 7°1°Jan
- 8°0°Feb
- 12°3°Mar
- 16°6°Apr
- 19°9°May
- 25°13°Jun
- 29°16°Jul
- 28°15°Aug
- 24°12°Sep
- 18°9°Oct
- 12°4°Nov
- 8°1°Dec
Outside: afternoon and night averages for 1991–2020 (NASA POWER) brought to the altitude of the entrance. Inside: the yearly average, which deep parts of a cave keep. Near the entrance it follows the weather a little.
Show cave in France
Grottes de la Devèze-Roquebleue is a show cave in France. The entrance is at 410 m. It has stalactites and stalagmites. It is open to visitors.
Getting there.
- Show cave: open to visitorsUsually with a guided tour; check times and tickets on the official site.
- Saint-Pons-de-Thomièresnearest town · 4.4 km in a straight line
- Parking 160 m awaynearest car park in OpenStreetMap, straight line
- Table d'orientationnearest viewpoint · 0.1 km from the entrance
- Castres Mazamet Airport (DCM)nearest airport with scheduled flights · 35 km in a straight lineCar hire at CCF airport (Carcassonne)Discover Cars · sponsored link↗
Plan the visit
Guided tours, 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 above.
The ground above the cave, with the relief shaded, the line of the section and what people have mapped around the entrance.
N
1.5 km
Sentinel-2 cloudless 2016 (EOX, CC BY 4.0), 6.0 × 6.0 km, north up. The line is the section above. Points © OpenStreetMap contributors.
Around the entrance.
- 6other cave entrances within 3 kmGrotte de Bédelbour, Grotte de la Baïssède, Grotte de la Trayolle and 3 more
- 1viewpoints within 3 kmTable d'orientation
- 5marked hiking routes within 3 kmTours dans le Pays Haut Languedoc et Vignobles, Voie Verte Passa Païs, Lo Camin Nòstre and 2 more
- 6car parks within 2 km
- 2bus stops within 2 km
- 5campsites within 8 kmLa Borio de Roque, A la ferme des Enclauses, Le Therondels and 2 more
- 8hotels and guesthouses within 8 kmCampotel du Jaur, Les Hôtes de Labastide, Le Somail and 5 more
- springs within 2 km
- sinkholes within 3 km
- caving clubs and spots within 15 km
- climbing crags within 3 km
- named waterfalls within 4 km
- information boards and visitor centres within 3 km
- restaurants and cafés within 3 km
Counted in OpenStreetMap, the map anyone can edit, around the entrance. A low number may just mean nobody has mapped it yet. © OpenStreetMap contributors (ODbL).
Towns nearby
- Saint-Pons-de-Thomières4.4 km in a straight line
- Labastide-Rouairoux6.0 km in a straight line
- La Salvetat-sur-Agout14 km in a straight line
- Saint-Amans-Valtoret18 km in a straight line
- Saint-Amans-Soult18 km in a straight line
- Saint-Chinian20 km in a straight line
- Pépieux20 km in a straight line
- Olonzac21 km in a straight line
Month by month
The weather outside, at the entrance.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Afternoon | 7 | 8 | 12 | 16 | 19 | 25 | 29 | 28 | 24 | 18 | 12 | 8 |
| Afternoon | 7 | 8 | 12 | 16 | 19 | 25 | 29 | 28 | 24 | 18 | 12 | 8 |
| Night | 1 | 0 | 3 | 6 | 9 | 13 | 16 | 15 | 12 | 9 | 4 | 1 |
| Rain (mm) | 65 | 48 | 58 | 68 | 66 | 43 | 34 | 39 | 46 | 66 | 71 | 59 |
| Rainy days | 12 | 10 | 10 | 12 | 12 | 9 | 7 | 8 | 9 | 12 | 13 | 12 |
| Sun hours/day | 3.0 | 4.5 | 5.6 | 6.6 | 7.4 | 9.3 | 9.8 | 8.9 | 7.4 | 5.1 | 3.4 | 3.0 |
| Snow on the ground (cm) | 7 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
| Afternoon | Afternoon | Night | Rain (mm) | Sun hours/day | |
|---|---|---|---|---|---|
| Jan | 7 | 7 | 1 | 65 | 3.0 |
| Feb | 8 | 8 | 0 | 48 | 4.5 |
| Mar | 12 | 12 | 3 | 58 | 5.6 |
| Apr | 16 | 16 | 6 | 68 | 6.6 |
| May | 19 | 19 | 9 | 66 | 7.4 |
| Jun | 25 | 25 | 13 | 43 | 9.3 |
| Jul | 29 | 29 | 16 | 34 | 9.8 |
| Aug | 28 | 28 | 15 | 39 | 8.9 |
| Sep | 24 | 24 | 12 | 46 | 7.4 |
| Oct | 18 | 18 | 9 | 66 | 5.1 |
| Nov | 12 | 12 | 4 | 71 | 3.4 |
| Dec | 8 | 8 | 1 | 59 | 3.0 |
Averages 1991–2020 (NASA POWER) for a cell about 55 km wide, brought to the altitude of the entrance (410 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 | 96% | 61% | 117% | 133% | 138% | 167% | 35% | 89% | 192% | 130% | 51% | 213% |
| 2021 | 93% | 104% | 27% | 38% | 80% | 162% | 135% | 49% | 143% | 51% | 144% | 148% |
| 2022 | 72% | 42% | 103% | 96% | 17% | 99% | 108% | 57% | 139% | 18% | 123% | 57% |
| 2023 | 108% | 39% | 89% | 65% | 103% | 187% | 92% | 86% | 86% | 68% | 131% | 100% |
| 2024 | 59% | 135% | 120% | 70% | 135% | 119% | 99% | 81% | 155% | 147% | 58% | 75% |
| 2025 | 44% | 24% | 63% | 34% | 36% | 22% | 69% | 68% | 37% | 18% | 38% | 87% |
130% or more: wet month 70% or less: dry month
Where these figures come from
| Name, type, published depth and length, visitors | Wikidata (Q3117194) · CC0 |
|---|---|
| The relief above, the entrance altitude, the section and the 3D model | Copernicus DEM GLO-30 · © DLR e.V., © Airbus Defence and Space GmbH, Copernicus/ESA |
| Climate | NASA POWER, 1991–2020 |
| Entrances, springs, sinkholes, opening hours and what is around | © 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.
The family
Do you prefer beaches, lakes, mountains, waterfalls, islands, rivers, canyons, caves, dark skies, viewpoints, birdwatching or forests?
Same idea, other landscapes: field atlases built on open data, month by month, in seven languages.





