Saint-Cast-le-Guildo
- Freestyle, Freeride
- Best for
- Beginner
- Skill Level
- Chop
- Spot Type
- Busy
- Crowd Level
This spot information is AI-assisted and has not been human verified. It may be incomplete, outdated, or incorrect. Verify safety, access, local rules, and current conditions with official or local sources before riding.
About
Saint-Cast-le-Guildo is a Brittany coastal destination built around a dramatic tidal environment and sandy beach riding. The water is generally clean, and conditions are often described as shallow with chop and small waves, which favors controlled sessions and easy beach access. For wind sports, kitesurfing is the most consistently supported activity. The area is described as versatile, with the best wind direction reported as NE in local spot guidance, and kite sessions supported by steady frontal winds. During summer, extra management is used to separate riders from swimmers, and the spot can be used as a go-to option for east-wind days while still offering other wind orientations depending on which beach area is used. Wingfoiling is also highlighted as very popular thanks to sandy bottom and (at the Pen-Guen side) more protected conditions. The large tide range provides changing water states—from very shallow near dead low tide to more workable depths through the tide—so planning your launch timing becomes part of getting the best ride. Surfing exists but is not presented as a primary destination: surf conditions are inconsistent and wave quality can be poor, with run-length described as short and larger swells tending to close out. Safety planning is important because hazards include rocks at beach extremities, tidal currents, and additional nearshore hazards such as oyster beds and moorings reported at the main beach. Overall, the region is known for strong wind-driven days across seasons, with summer being busiest for tourism. For water comfort, wetsuit needs range from thin summer protection to full suits in winter, and late spring/early autumn are emphasized as offering a good blend of wind and temperatures.
- Massive tidal range creates a dynamic riding environment and large changes in depth/conditions.
- Kitesurfing versatility across sandy launch areas and wind directions.
- Wingfoiling supported by sandy bottom and (noted) protected conditions at Pen-Guen.
- Seasonal kitesurf zoning in July/August to improve swimmer/rider separation.
- Large sandy beaches with easy self-launch and abundant space at low tide.
- Kitesurfing is the best supported sport, with beginner-friendly sandy shallows.
- Two main sandy-beach orientations support a wide range of wind directions; wingfoiling and freeride are also strong options.
- Very large tidal range can drastically change conditions (depth and riding environment).
- Tidal currents and hazards near beach extremities (rocks; also noted: oyster beds and moorings).
- Water and wave state can be choppy; surf quality is generally not the main attraction.
Wind, water and seasons
Wind
- Direction
- NE
- Wind Range
- 10–20 kts
- Wind Type
- Frontal — Frontal/Atlantic systems are the primary wind source; summer afternoons can bring occasional light sea breezes.
- Reliability
- regular
- Gust Factor
- Steady — Reported as steady; some sources also describe gustiness as moderate.
- Best Months
- April, May, June, September, October
- Recommended Kite Sizes
- 12–17 m²
Water & beach
- Water Type
- Chop
- Beach
- Sand — Sandy beach.
- Beach Size
- Tidal
- Waves
- Small — Surf and water-state descriptions commonly refer to small waves; choppy surface is also reported.
- Chop Level
- Moderate chop — Choppy water is reported for general conditions.
- Launch
- Big — Large sandy beaches; space can be abundant at low tide but more limited at high tide.
Through the year
Quiet in winter; busy in summer (July–August).
Late autumn and winter (November–February) are described as seeing frequent Atlantic depressions.
By sport
What to expect for each.
Shallow, sandy beaches with chop and small waves; the area is versatile and can be ridden across different wind directions and tide states. Freestyle is supported in steady winds, with wave riding possible when swell arrives.
- Kite Sizes
- 12–17 m²
Freeride and foil are reported as good options; long runs are noted in North-Westerly conditions at Pen-Guen.
- Sail Sizes
- 5.5–7.5 m²
Wingfoiling is described as very popular due to sandy bottom and protected conditions at Pen-Guen; large tides can provide a mix of flatter water and small chop.
- Foil Friendly
- Yes — Foil friendly conditions are reported.
- Min Depth
- Ample depth at mid-to-high tide; caution near the shore at dead low tide.
- Wing Sizes
- 4–6 m²
Primarily a wind sport spot; surf can be rideable under the right swell and wind combination but is often described as low quality.
- Wave Direction
- Both
- Optimal Swell
- NW, W
- Swell Height
- 1–2.5 m
- Optimal Tide
- Mid
- Shelter
- Semi-sheltered
- Wind Effect
- Reported as best with southwest/light offshore conditions; wind can reduce quality and the spot is not primarily a surfing destination.
- Bigger Swell
- Closeouts common in very large swells.
- Wave Quality
- Poor — Wave quality is reported as poor/not a primary surf destination.
- Wave Power
- Moderate — Sources conflict: one describes moderate power; another describes soft/poor quality.
- Wave Shape
- Peeling — Also described as mushy/closeouts on very large swells.
- Peel Speed
- Medium — Peeling with medium peel speed is reported (also described elsewhere as slow/mushy).
- Ride Length
- Short — Ride length is described as short.
- Ride Length Details
- Can produce rideable beach-break waves at Plage de Pen-Guen during heavier NW/W swell conditions.
Check the forecast before you go
See wind, waves, weather and session windows for Saint-Cast-le-Guildo in the full forecast view.
Saint-Cast-le-Guildo wind and wave forecast summary
- Wind
- 2–21 ktsGusts 35 kts
- Direction
- SW226°
- Strongest day
- Sat, Oct 2421 kts
- Windy days
- 4/712 kts or more
- Waves
- 0.2–2.6 m8s period
- Temperature
- 7–19 °C
Over the next 7 days, Saint-Cast-le-Guildo is forecast for daytime winds of 2–21 kts, peaking around 21 kts on Saturday, October 24 with gusts to 35 kts. The prevailing direction is SW. Waves run 0.2–2.6 m with a period of about 8s. Based on the Wavind model, in the spot’s local time.
Other spots in the area
What to know before you launch
Safety, access, restrictions, rescue, and local rules can change. Treat these details as informational and confirm them locally before launching.
Hazards
- rocks at beach extremities
- tidal currents
- boat moorings at Grande Plage
- oyster beds in the nearby estuary
- ships
Rescue & support
- Lifeguard
- Seasonal — Seasonal lifeguard presence is reported.
- Rescue & Self-Rescue
- Limited — Spot-level info notes rescue availability is limited; the regional baseline indicates sea rescue coverage by SNSM with a local presence in Saint-Cast-le-Guildo.
- Emergency Info
- European emergency number: 112. Sea rescue is provided locally by SNSM (sea-rescue number noted regionally: 196).
Rules of the spot
In July and August, designated kitesurfing zones are used to separate riders from swimmers; check local boards for day-to-day updates.
- Kitesurfing banned in certain swimming areas during peak season.
- Summer zoning (July–August) around kitesurfing activity.
- Expect very large tides that significantly change depth and sailing conditions.
- Pen-Guen is described as the safest bet for beginners due to sandy bottom and wide beach.
- Use designated kitesurfing zones during July/August; check local association boards for daily updates.
- Large tides can alter the conditions—treat the area as a flexible session site and be ready for a backup plan.
Getting there & access
- Nearest City
- Saint-Cast-le-Guildo
- Nearest Town
- Saint-Cast-le-Guildo
- Parking
- Public parking available at/near the beaches; parking at the beach is reported.
- Access
- Drive from Lamballe northeast on D768 to Matignon, then continue to Saint-Cast-le-Guildo; short walk from town.
- Cost Level
- Moderate
- Local Language
- French
What's on the beach
- Accommodation
- Nearby town — Numerous campsites, hotels, and holiday rentals in Saint-Cast (and nearby coastal towns).
- Food & Drink
- Restaurants and commerces nearby; many restaurants and cafés along the Grande Plage promenade.
- Equipment Rental:
- Equipment rental is available via the local sailing center and seasonal kiosks (and rental is offered through the local sports infrastructure).
- Gear Storage
- Some storage available through the local nautical center; many visitors store gear in vehicles or accommodation.
- Gear Repair
- Basic repair services are available nearby (Saint-Malo or specialized surf shops in the Dinard area, per regional baseline).
No schools or services are listed for this spot yet.
Off the water
A charming seaside resort atmosphere on Brittany’s Emerald Coast, combining active beach culture with rugged cliffs and historical fortifications.
A peninsula offering dramatic cliff views and a famous lighthouse.
A well-preserved medieval fortress perched on a rocky promontory.
A coastal hiking path that rings the Brittany coastline.
Seafood restaurants and cafes overlooking the marina.
A long, sandy beach perfect for families and children.
From riders who've been here
Latest reported conditions
Spot questions
Frequently asked questions
When is the best season at Saint-Cast-le-Guildo?
The best overall months at Saint-Cast-le-Guildo are June, July, August, September. The best wind months are April, May, June, September, October.
Which wind directions work at Saint-Cast-le-Guildo?
Saint-Cast-le-Guildo works with NE winds.
What equipment sizes are recommended at Saint-Cast-le-Guildo?
Recommended equipment sizes at Saint-Cast-le-Guildo: Kitesurfing: 12–17 m² · Windsurfing: 5.5–7.5 m² · Wingfoiling: 4–6 m². The typical wind range is 10–20 kts.
What skill level is Saint-Cast-le-Guildo suitable for?
Saint-Cast-le-Guildo suits these riding levels: Kitesurfing: Beginner · Windsurfing: Intermediate · Wingfoiling: Beginner · Surfing: Beginner to Intermediate.