Skip to content
Map of Grotte Mystérieuse
Add the first photo

Grotte Mystérieuse

FranceDirections
3mm wetsuit typical

Grotte Mystérieuse at a glance

Grotte Mystérieuse is a dive site in France. Typically most favorable Jun · from 3 years of archive data. Recent reports put the water around 22°C (72°F). Check the latest conditions and entry details before you go.

Favorable window now· until 14:00, then favorable & moderate until 20:00 · sunset 19:02

Forecast for this hour · 11:00 · run 16 h ago
1.1 m (3.5 ft)waves — about a meter expected (waves — about four feet expected)

Tap a factor for its source and model point · Forecast 22°C · seasonal avg 20°C ( · Forecast 72°F · seasonal avg 69°F)

Dive windows this week

Lightest wind: Thu
Sun10:00–14:00 favorable, 14:00–17:00 moderate, 17:00–18:00 favorable, 18:00–20:00 moderate

1.0 m waves · 12 kn wind (3.3 ft waves · 12 kn wind)

Mon8:00–20:00 favorable

0.5 m waves · 6 kn wind (1.7 ft waves · 6 kn wind)

Tue8:00–19:00 favorable

0.1 m waves · 6 kn wind (0.4 ft waves · 6 kn wind)

Wed8:00–19:00 favorable

0.1 m waves · 5 kn wind (0.4 ft waves · 5 kn wind)

Thu8:00–19:00 favorable

0.0 m waves · 3 kn wind (0.1 ft waves · 3 kn wind)

Fri8:00–19:00 favorable

0.1 m waves · 5 kn wind (0.2 ft waves · 5 kn wind)

SatNot in the forecast yet

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 7:19 · Sunrise 7:47 · Sunset 19:02 · some windows run past sunset

Source: Open-Meteo marine · model point 1.6 km from site · updated 10 Oct, 19:23 CEST

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Grotte Mystérieuse

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 19% of days have historically been favorable, water has typically been 15°C (58°F), waves have typically been 1.9 m (6.1 ft), wind has typically been 24 knots
  2. February, 44% of days have historically been favorable, water has typically been 14°C (57°F), waves have typically been 1.5 m (4.9 ft), wind has typically been 20 knots
  3. March, 29% of days have historically been favorable, water has typically been 14°C (57°F), waves have typically been 1.8 m (5.9 ft), wind has typically been 22 knots
  4. April, 46% of days have historically been favorable, water has typically been 15°C (59°F), waves have typically been 1.4 m (4.7 ft), wind has typically been 20 knots
  5. May, 56% of days have historically been favorable, water has typically been 17°C (63°F), waves have typically been 1.1 m (3.5 ft), wind has typically been 18 knots
  6. June, 66% of days have historically been favorable, water has typically been 22°C (71°F), waves have typically been 0.9 m (3.0 ft), wind has typically been 16 knots, historically most favorable
  7. July, 57% of days have historically been favorable, water has typically been 23°C (73°F), waves have typically been 1.2 m (3.8 ft), wind has typically been 19 knots
  8. August, 65% of days have historically been favorable, water has typically been 24°C (75°F), waves have typically been 1.0 m (3.4 ft), wind has typically been 17 knots
  9. September, 59% of days have historically been favorable, water has typically been 22°C (72°F), waves have typically been 1.2 m (3.8 ft), wind has typically been 18 knots
  10. October, 49% of days have historically been favorable, water has typically been 20°C (69°F), waves have typically been 1.4 m (4.6 ft), wind has typically been 19 knots
  11. November, 28% of days have historically been favorable, water has typically been 18°C (64°F), waves have typically been 1.8 m (5.9 ft), wind has typically been 23 knots
  12. December, 39% of days have historically been favorable, water has typically been 15°C (60°F), waves have typically been 1.8 m (5.9 ft), wind has typically been 23 knots

June has typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life recorded at this site

No recorded sightings data for this site yet. Species lists appear as GBIF records and diver reports accumulate.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated July 2026

Site details

Grotte Mystérieuse is a dive site located in France.

No hazards recorded for this site yet — that never means there are none. Ask a local operator before you dive.

Reviews

No reviews yet — this site is waiting for its first. Dived here? Your rating and a few lines help the next diver.

Spot something off?

Help keep this listing accurate for the next diver.