Is it worth the trip?
86Good out of 100 for your dates
Best on Sat 7: Rock dry, Rock about 14 °C
Tue 3 · 67 out of 100
- Rock
- Dry?
- Rock temp
- 15°C
- Air
- 12°C
- Rain
- 0 mm
Wed 4 · 89 out of 100
- Rock
- Dry
- Rock temp
- 13°C
- Air
- 9°C
- Rain
- 0 mm
Thu 5 · 70 out of 100
- Rock
- Wetdry in 9 h
- Rock temp
- 6°C
- Air
- 9°C
- Rain
- 0.7 mm
Fri 6 · 91 out of 100
- Rock
- Dry
- Rock temp
- 14°C
- Air
- 12°C
- Rain
- 0 mm
Sat 7 · 93 out of 100
- Rock
- Dry
- Rock temp
- 14°C
- Air
- 11°C
- Rain
- 0 mm
Sun 8 · 83 out of 100
- Rock
- Dry
- Rock temp
- 10°C
- Air
- 8°C
- Rain
- 0 mm
Mon 9 · 85 out of 100
- Rock
- Dry
- Rock temp
- 11°C
- Air
- 10°C
- Rain
- 0 mm
Tap a day for rock, its warmth, the air and rain. Full forecast
Forecast: next 10 days
Full forecast- Tue 367, good
- Wed 489, good
- Thu 570, good
- Fri 691, good
- Sat 793, good
- Sun 883, good
- Mon 985, good
- Tue 1091, good
- Wed 1144, poor
- Thu 1280, good
The spot in two facts
- 1 cragmapped within 5 km
- Best Apr, Aug–Sep5 good days in 7
Full forecast
every day, every number
The score doesn't know loose rock, seepage, access bans or your skill.
| Day | Score | Rock | Rock temp | Air | Rain |
|---|---|---|---|---|---|
| Tue 3Nov* | 67, good | Dry? | 15°C | 12°C | 0 mm |
| Wed 4Nov | 89, good | Dry | 13°C | 9°C | 0 mm |
| Thu 5Nov | 70, good | Wetdry in 9 h | 6°C | 9°C | 0.7 mm |
| Fri 6Nov | 91, good | Dry | 14°C | 12°C | 0 mm |
| Sat 7Nov | 93, good | Dry | 14°C | 11°C | 0 mm |
| Sun 8Nov | 83, good | Dry | 10°C | 8°C | 0 mm |
| Mon 9Nov | 85, good | Dry | 11°C | 10°C | 0 mm |
| Tue 10Nov | 91, good | Wet | 16°C | 15°C | 0.3 mm |
| Wed 11Nov | 44, poor | Wet | 13°C | 13°C | 0 mm |
| Thu 12Nov | 80, good | Wetdry in 3 h | 14°C | 14°C | 0 mm |
* Rain before today is not known: the forecast starts today, so these days are scored from a dry start and a wet one.
Rock and air are in °C, the rock's with the sun on it; rain in mm. More
Forecast updated . It refreshes every three hours. Forecast data: ECMWF, DWD, Météo-France and NOAA, served by Open-Meteo.com (CC BY 4.0). Changed by us. Generated using E.U. Copernicus Marine Service Information.
Best time to go
best Apr, Aug–Sep
Good climbing days in a typical week, each month, from 2016 on (ERA5 history scored the same way).
- Jan3of 7: a trip from Sat 2 Jan
- Feb4of 7: a trip from Sat 6 Feb
- Mar4of 7: a trip from Sat 6 Mar
- Apr5of 7: a trip from Sat 3 Apr
- May4of 7: a trip from Sat 1 May
- Jun4of 7: a trip from Sat 5 Jun
- Jul4of 7: a trip from Sat 3 Jul
- Aug5of 7: a trip from Sat 7 Aug
- Sep5of 7: a trip from Sat 4 Sept
- Oct4of 7: a trip from Sat 2 Oct
- Nov4of 7: a trip from Wed 4 Nov
- Dec3of 7: a trip from Sat 5 Dec
Tap a month to see this spot for a trip then.
Typical weather, not a forecast.
Map
the area and its town
Site d'escalade Les Rochers du Couesnon on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
The map needs JavaScript. Every place on it is listed on this page, and each place's page links to Google Maps.
One finger scrolls the page; two fingers move the map. Pins are our own positions. Map OpenFreeMap, © OpenMapTiles, data © OpenStreetMap contributors, terrain © Mapterhorn.
About
the place in full, sources, credits
About Site d'escalade Les Rochers du Couesnon
1 crag mapped. Best from Feb to Nov. The nearest town to stay in is Cesson Sevigne.
- Crags 1 crag mapped.
- Rock No source states the rock.
From OpenStreetMap: the crags mapped within 5 km. Check access and bans locally.
Crags: © OpenStreetMap contributors (ODbL).
The score is the conditions only: the journey, the price and the partners never change it (how we score, how we earn).
Rough cost (estimate): about US$1,280–US$2,400 each
about US$1,280–US$2,400 each · 6 nights, 2 sharing: flights, taxi, stay, food, climbing instructor.
Our estimate from typical public prices, not a quote: check the real prices before you book (where they come from). Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 2 November 2026.
How we worked it out
| What | How we worked it out | Each |
|---|---|---|
| Flights | return ORD to RNS, estimated from distance and season, changing at DUB, full-service airlines, with a hold bag | about US$450–US$939 |
| Taxi | airport and back, shared | about US$81–US$134 |
| Stay | 6 nights, a mid-range double, shared | about US$329–US$543 |
| Food | 7 days eating out | about US$315–US$584 |
| Climbing instructor | 1 day with an instructor, shared; leave it out if you climb on your own | about US$107–US$201 |
| Total | about US$1,280–US$2,400 |
Climbers bring their own kit: it is not in the cost. Prices from public sources, checked in 2026.
Where to stay: Cesson Sevigne
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 45 min by car · 9 places to stay
about US$121/nightcountry average
About Cesson Sevigne its beds, food and every spot near it
About US$121 a night is our estimate of the country's average 2-star double room that month: not each town's price, and not a quote. Drives are estimates. Prices are about, in US Dollar (USD): our pound figures at the European Central Bank's rate of 2 November 2026.
Getting there: about 16h 55m
About 16h 55m door to door from Chicago
Fly ORD → RNS, changing at Dublin Airport (DUB), then 55 min by road
Flights ORD → RNS on your dates · AviasalesAdeSIM for your phone · Search on AiraloAd
An estimate, one way; the journey never changes the score.
On the rock
Saved: this link opens the same trip
The link holds the trip itself: nothing about you is kept. Check the forecast again before you book.