Sumidouro
- Shortboard, Advanced riders
- Best for
- Expert
- Skill Level
- Ocean
- 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 It may be incomplete, outdated, or incorrect.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
Sumidouro is a rare, high-performance surf beach break at the entrance of Babitonga Bay (São Francisco do Sul Island). It’s known for hollow, fast, powerful waves and very long rides, with typical ride lengths around 300–500 m and exceptional days reported to go beyond 500 m when conditions align. The spot is primarily an experienced-surfer wave: it breaks very infrequently (about 5 days per year) and works best on E to North-East swells, typically starting to function around 1.0–1.5 m and holding up to about 2.5 m+ (with hollow, fast, powerful character). Best tide position is low to mid tide, with workable conditions also described across rising and falling tides. Wind-wise, the working pattern favors W to South-East directions and is described as benefiting from offshore winds from the South or West quadrant. However, the bay-entrance terrain can create wind shadow effects depending on the approach direction, so you need to check local wind behavior at the launch area before committing. Access is one of the biggest factors. You drive to Praia do Forte, park near the Brazilian Army fortress, and then expect a long walk—about 35–45 minutes—to reach the spot. Safety planning is essential: reef/rock hazards and strong currents are reported, and rescue/lifeguard presence is reported as none/no rescue at the spot. When it’s firing, it’s highly respected by local surfers, so surf etiquette and preparedness are critical.
- Rare breaking frequency (about 5 days per year).
- Hollow, fast, powerful waves with very long rides (300–500 m typical).
- Works best on E–NE swells; low to mid tide is preferred.
- High-performance hollow, fast, powerful beach-break with very long rides (typically 300–500 m).
- Excellent/regional classic wave quality when it fires.
- Sand bottom with occasional reef hazards; parking near Praia do Forte with a straightforward (but long) hike route.
- The wave breaks rarely (around 5 days per year) and usually requires specific swell/wind alignment.
- Remote access with a long hike (about 35–45 minutes) and no rescue/lifeguards reported at the spot.
- Reef/rock hazards and strong currents are reported, especially near the bay entrance.
Wind, water and seasons
Wind
- Direction
- W, SW, S, SE
- Offshore directions
- S, W, WSW, SW
- Shadow Zones
- The terrain around the bay entrance can create wind shadows depending on the direction.
- Thermal Window
- Sea breeze · Afternoon · Months: Sep, Oct, Nov, Dec, Jan, Feb, Mar · Dir: N, NE, ENE, E, S, SW, WSW · Most consistent thermal enhancement is roughly late morning through afternoon (about 12:00 PM–6:00 PM) in the wider São Francisco do Sul coast cluster.
Water & beach
- Water Type
- Ocean
- Beach
- Sand — Sand beach.
- Beach Size
- Tidal
- Waves
- Big — Wave size described as big; working window commonly cited from about 1.0–1.5 m up to 2.5 m+.
- Launch
- Big — Remote beach area reachable after a significant hike through coastal terrain.
- Launch Difficulty
- Difficult — Launch difficulty is reported as difficult (remote access with a long hike).
Through the year
Usually empty due to access, but becomes extremely crowded on the rare days when it breaks well.
Rain is possible year-round, with slightly higher frequency in summer.
By sport
What to expect for each.
A rare, high-performance beach break at the entrance of Babitonga Bay. When it fires, it delivers hollow, fast, powerful waves with very long rides, typically when swell wraps into the bay. Works on roughly 1.0–2.5+ m swells from E–NE.
- Wave Direction
- Both
- Optimal Swell
- E, NE
- Swell Height
- 1–2.5 m
- Optimal Tide
- Low, Mid — Best tide position is low and mid tide; rising and falling tides are workable.
- Shelter
- Semi-sheltered — Break occurs at a bay entrance; described as semi-sheltered.
- Wind Effect
- Works best with offshore winds from the South or West quadrant (per wind notes); the spot favors W–SE winds in general notes.
- Bigger Swell
- Holds size well; typically requires at least a 1 m swell to start breaking properly.
- Wave Quality
- Excellent — Wave quality described as excellent / regional classic.
- Wave Power
- Powerful — Hollow, fast, powerful.
- Wave Shape
- Hollow — Hollow wave shape reported.
- Peel Speed
- Fast — Fast peel speed reported.
- Ride Length
- Long — Very long rides are reported (about 300–500 m), with exceptional days exceeding 500 m.
- Typical Ride Length
- 300–500 m
- Ride Length Details
- Typical very long rides of about 300–500 m; exceptionally long days can exceed 500 m.
Check the forecast before you go
See wind, waves, weather and session windows for Sumidouro in the full forecast view.
Sumidouro wind and wave forecast summary
- Wind
- 2–13 ktsGusts 24 kts
- Direction
- SE125°
- Strongest day
- Mon, Oct 2613 kts
- Windy days
- 1/712 kts or more
- Waves
- 0.4–0.7 m6s period
- Temperature
- 15–23 °C
Over the next 7 days, Sumidouro is forecast for daytime winds of 2–13 kts, peaking around 13 kts on Monday, October 26 with gusts to 24 kts. The prevailing direction is SE. Waves run 0.4–0.7 m with a period of about 6s. 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
- Reef patches
- Occasional rocks
- Strong currents (common due to the mouth of Babitonga Bay)
- Remote location with long hike access
Rescue & support
- Lifeguard
- None — No lifeguard presence reported at the spot.
- Rescue & Self-Rescue
- No — Rescue availability is reported as no.
- Emergency Info
- Emergency services can be reached by dialing 193 (Fire/Rescue) or 192 (Ambulance).
- Localism / Vibe
- Moderate — The spot is highly respected by local surfers; localism is described as moderate.
Rules of the spot
General surf etiquette applies. The spot breaks very rarely, often requiring specific large swell events to wrap into the bay. Access requires a long walk (about 35–45 minutes) from the Praia do Forte parking area.
- Long hike access—ensure you have enough time and condition to return before dusk.
- Prepare for a 35–45 minute walk from the nearest parking area at Praia do Forte.
- Expect the spot to break only rarely; plan around specific swell/wind conditions when it fires.
Getting there & access
- Nearest City
- São Francisco do Sul / Joinville
- Nearest Town
- São Francisco do Sul
- Nearest Airport
- Joinville-Lauro Carneiro de Loyola Airport (JOI) (~55 km away)
- Parking
- Park in front of the Brazilian Army fortress at Praia do Forte.
- Access
- Drive to Praia do Forte and park in front of the Brazilian Army fortress, then take a 35-minute walk to reach the spot.
- Local Language
- Portuguese
What's on the beach
- Accommodation
- Nearby town — Accommodation options available in the town of São Francisco do Sul or near Praia do Forte.
- Food & Drink
- None at the spot; provisions must be carried in.
No schools or services are listed for this spot yet.
From riders who've been here
Latest reported conditions
Spot questions
Frequently asked questions
When is the best season at Sumidouro?
The best overall months at Sumidouro are June, July, August, September.
Which wind directions work at Sumidouro?
Sumidouro works with W, SW, S, SE winds. Offshore directions are S, W, WSW, SW.
What skill level is Sumidouro suitable for?
Sumidouro suits these riding levels: Surfing: Advanced to Expert.