Roche Grand Maman
Dive site · Seychelles
Experienced divers only
Is it worth the trip?
82Good out of 100 for your dates
2 days tie for best
Tue 3 · 83 out of 100
- Sea
- 0.5 m
- Wind
- 1 kn
- Gusts
- 3kn
- Air
- 28°C
Wed 4 · 81 out of 100
- Sea
- 0.4 m
- Wind
- 6 kn
- Gusts
- 8kn
- Air
- 27°C
Thu 5 · 72 out of 100
- Sea
- 0.4 m
- Wind
- 8 kn
- Gusts
- 12kn
- Air
- 28°C
Fri 6 · 73 out of 100
- Sea
- 0.3 m
- Wind
- 6 kn
- Gusts
- 10kn
- Air
- 28°C
Sat 7 · 83 out of 100
- Sea
- 0.3 m
- Wind
- 5 kn
- Gusts
- 8kn
- Air
- 29°C
Sun 8 · 84 out of 100
- Sea
- 0.3 m
- Wind
- 1 kn
- Gusts
- 7kn
- Air
- 28°C
Mon 9 · 84 out of 100
- Sea
- 0.3 m
- Wind
- 1 kn
- Gusts
- 10kn
- Air
- 28°C
Tap a day for sea, wind and water. Full forecast
Forecast: next 10 days
Full forecast- Mon 283, good
- Tue 383, good
- Wed 481, good
- Thu 572, good
- Fri 673, good
- Sat 783, good
- Sun 884, good
- Mon 984, good
- Tue 1083, good
- Wed 1173, good
The site in five facts
- Down to 25 mits deepest
- From a boathow you get in
- Experienced / deepexperienced divers only
- Water 29 °Crash vest or 1 to 2 mm
- Faces Nswell from there reaches it
Full forecast
every day, every number
The score doesn't know currents, the visibility on the day or your certification.
Suits experienced divers only, as a dive guide states it. Scored for experienced divers.
| Day | Score | Sea | Wind | Gusts | Air |
|---|---|---|---|---|---|
| Mon 2Nov | 83, good | 0.5 m | 2 kn | 5kn | 29°C |
| Tue 3Nov | 83, good | 0.5 m | 1 kn | 3kn | 28°C |
| Wed 4Nov | 81, good | 0.4 m | 6 kn | 8kn | 27°C |
| Thu 5Nov | 72, good | 0.4 m | 8 kn | 12kn | 28°C |
| Fri 6Nov | 73, good | 0.3 m | 6 kn | 10kn | 28°C |
| Sat 7Nov | 83, good | 0.3 m | 5 kn | 8kn | 29°C |
| Sun 8Nov | 84, good | 0.3 m | 1 kn | 7kn | 28°C |
| Mon 9Nov | 84, good | 0.3 m | 1 kn | 10kn | 28°C |
| Tue 10Nov | 83, good | 0.3 m | 7 kn | 9kn | 28°C |
| Wed 11Nov | 73, good | 0.3 m | 6 kn | 10kn | 29°C |
Sea is the waves near the site, in metres; wind and gusts in knots. "Boats in": gusts that keep dive boats in. More
Tide
- Mon 2 NovLow 02:51 −0.2 mHigh 09:42 +0.5 mLow 17:03 −0.4 mHigh 23:33 +0.2 m
- Tue 3 NovLow 04:57 −0.1 mHigh 11:15 +0.3 mLow 18:15 −0.4 m
- Wed 4 NovHigh 00:58 +0.3 mLow 06:59 −0.2 mHigh 12:48 +0.3 mLow 19:14 −0.4 m
Local clock times; heights about mean sea level. On open coasts the times are usually within a quarter of an hour; in bays, estuaries and on the Gulf of Mexico they can be an hour or more out. Slack water, the safest time to dive where there is current, is about half an hour either side of each high and low. Tide: EOT20 global ocean tide model, Hart-Davis et al. 2021, DGFI-TUM (doi:10.17882/79489), CC BY 4.0. Times and heights computed by us. A model, not a tide table: check a local table before you go.
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.
Map
the site, its town, photos
Roche Grand Maman on Google Maps · Directions
Each place wears its best day on these dates: green good, amber fair, pale red poor, as the key says.
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Photos of Roche Grand Maman
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About
the place in full, sources, credits
About Roche Grand Maman
A wall dive. It goes down to 25 m. You get in from a boat. It suits experienced divers only, as a dive guide states it. The coast faces N: swell from the N reaches it, and wind from the S blows out to sea. 2 dive centres or shops within 10 km, the nearest 6.4 km away. The sea is about 26°C in August, its coldest month (3 mm wetsuit), and 30°C in March, its warmest (rash vest or 1 to 2 mm). The town to stay in is Anse Kerlan. Within 5 km we also list 3 surf spots.
- What it is Wall.
- How deep Down to 25 m.
- Getting in From a boat.
- Who it suits Suits experienced divers only, as a dive guide states it.
- Dive centres 2 dive centres or shops within 10 km, the nearest 6.4 km away.
Water about 29°C: rash vest or 1 to 2 mm. Typical sea temperature for the time of year, not a forecast.
Visibility about 20 m. Typical for the time of year, estimated from ten years of NASA satellite water clarity, not a forecast. Clearest in Mar (about 30 m).
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$1,360–US$2,680 each
about US$1,360–US$2,680 each · 6 nights, 2 sharing: flights, hire car, stay, food.
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 SEZ, estimated from distance and season, changing at ZRH, full-service airlines, with a hold bag | about US$906–US$1,870 |
| Hire car | 6 days, shared | about US$87–US$148 |
| Stay | 6 nights, a mid-range double, shared | about US$174–US$289 |
| Food | 7 days eating out | about US$195–US$369 |
| Total | about US$1,360–US$2,680 |
Guided dives are not priced yet: we have no sourced price, so it is not in it. Prices from public sources, checked in 2026.
Where to stay: Anse Kerlan
Ad Links marked Ad may pay us if you book. You pay the same, and they never change a score. How we earn
about 5 min by car · 17 places to stay
about US$67/nightcountry average
About Anse Kerlan its beds, food and every spot near it
About US$67 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 27h 30m
About 27h 30m door to door from Chicago
Fly ORD → SEZ, changing at Zürich Airport (ZRH), then 1h 10m by road
Flights ORD → SEZ on your dates · AviasalesAdeSIM for your phone · Search on AiraloAd
An estimate, one way; the journey never changes the score.
In the water
Dives and courses in Anse Kerlan · GetYourGuideDive gear hire in Anse Kerlan · GetYourGuide
Dive centres nearby
Whitetip Divers 6.4 kmPADI
Octopus Diving Centre 7.0 km
Hawksbill Dive Centre 11 km
Plongee Sous Marine 17 km
Azurro Pro Dive 17 kmPADI
The nearest named dive centres and shops within 25 km, in a straight line; training agencies where the map states them. Listings, not a recommendation. Dive centres: © OpenStreetMap contributors (ODbL). Credits
What you might see
Too few open records near this site to list its animals. Ask a dive centre what you are likely to see.
This week's visibility, the current and the life no free forecast gives. Ask a dive centre before you book.
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.