Uchiboso
- Freeride, Shortboard
- Best for
- Intermediate
- Skill Level
- Small waves
- 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 It may be incomplete, outdated, or incorrect.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
Uchiboso is a sheltered beach break in the Minamiboso area, typically producing small, soft waves suited to surfing. It is most reliable when southerly swell wraps into the bay, and it can function as a refuge spot when more exposed nearby coasts are too large or messy. Offshore winds commonly come from the northeast, which helps keep the surface more rideable for beach-break surfing. Crowding can be a factor: the beach can get quite busy when swell arrives. Hazards are generally localized—concrete tetrapods can appear in certain sections, and there can be fishing boats, plus occasional nets—so it’s important to choose your takeoff zone carefully and avoid swimming/managed areas during peak summer. Wind conditions follow a strong seasonal sea-breeze pattern. In warmer months, sea breezes are commonly afternoon-driven, with conditions supporting not only surfing but also kitesurfing, windsurfing, and wingfoiling—especially during southerly wind setups. Wind is described as relatively light-gusting, though localized wind shadows can occur with strong northeasterly flow near east-side high ground. For timing, August is described as the best month overall, with late summer into early autumn offering more consistent opportunities due to typhoon-related swell and the warm-season sea-breeze regime. Water temperatures range from cold winter conditions up to warm summer water, so wetsuit choice varies significantly across the year.
- Sheltered beach-break surfing with offshore help from the northeast
- Southerly swell (often stronger during typhoon periods) is key for more rideable surf
- Summer sea-breeze regime supports multiple water sports, including foiling
- Sheltered beach break with manageable surf most of the time
- Offshore winds commonly come from the northeast, supporting cleaner conditions for surfers
- Summer sea-breeze pattern often supports other wind/water sports (including foiling and SUP-related conditions)
- Can get quite busy in the water
- Bottom has occasional hazards (tetrapods) and there may be nets/fishing boats in some sections
- Waves are small/soft for most of the season and often need southerly swell or typhoon activity to be more exciting
Wind, water and seasons
Wind
- Direction
- N, NE, ESE, S
- Offshore directions
- N, NE
- Wind Range
- 10–20 kts
- Wind Type
- Sea breeze — Summer sea-breeze pattern; afternoons are typically when onshore winds build.
- Reliability
- Moderate during typhoon season; otherwise relatively calm.
- Gust Factor
- Light gusts — Generally light gusts reported.
- Best Months
- August, September, October
- Recommended Kite Sizes
- 10–14 m²
Water & beach
- Water Type
- Small waves
- Beach
- Sand — Sand beach with ample space for equipment setup.
- Beach Size
- Medium
- Waves
- Small — Small surf overall; rideable sets depend on sufficient southerly swell.
- Launch
- Small — Beach-break launch from the shoreline.
- Launch Difficulty
- Easy — Wide sandy beach with easy shoreline access.
Through the year
Highest in August during the Obon holidays and whenever the Pacific side of Chiba has massive surf.
Rainy season occurs in June and July; typhoon season typically peaks from August through October.
By sport
What to expect for each.
Used for kitesurfing especially when southerly winds blow; conditions can be flatter than the open Pacific side, suiting freeride and foiling.
- Kite Sizes
- 10–14 m²
Popular for windsurfers wanting flatter water than the open ocean; suitable for slalom and freeride styles.
- Sail Sizes
- 5.5–7.5 m²
Wingfoiling can be excellent because the bay is sheltered and summer sea breezes are often consistent at light-to-moderate strength.
- Foil Friendly
- Yes — Foil-friendly conditions reported.
- Min Depth
- 1.5 meters
- Wing Sizes
- 5–7 m²
Sheltered beach break suited to surfing, with smaller waves at less exposed spots. Works primarily on southerly swell and can act as a refuge when outer coasts are too rough.
- Wave Direction
- Both
- Optimal Swell
- S, SW
- Swell Height
- 1–2.5 m
- Optimal Tide
- All tides — Works across tides.
- Shelter
- Sheltered — Sheltered setup within the bay/costal pocket.
- Wind Effect
- Offshore winds are from the northeast; with south winds the surface can be more onshore.
- Bigger Swell
- Holds up reasonably well during typhoons when other spots may close out.
- Wave Quality
- Average — Usually manageable but not typically high-power.
- Wave Power
- Soft — Gentle, manageable surf most of the time.
- Wave Shape
- Mushy — More mushy/soft wave form typical of small beach breaks.
- Peel Speed
- Slow — Quick turns on short, beach-break peaks.
- Ride Length
- Short — Short beach-break peaks for quick turns.
- Typical Ride Length
- 30–50 m
- Ride Length Details
- Typical ride length is short, often around 30–50 meters, with quick-turn beach-break sections.
Check the forecast before you go
See wind, waves, weather and session windows for Uchiboso in the full forecast view.
Uchiboso wind and wave forecast summary
- Wind
- 3–17 ktsGusts 31 kts
- Direction
- N6°
- Strongest day
- Sun, Oct 2517 kts
- Windy days
- 2/712 kts or more
- Waves
- 0.4–1.3 m7s period
- Temperature
- 14–25 °C
Over the next 7 days, Uchiboso is forecast for daytime winds of 3–17 kts, peaking around 17 kts on Sunday, October 25 with gusts to 31 kts. The prevailing direction is N. Waves run 0.4–1.3 m with a period of about 7s. 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
- Crowding in the water (especially when swell is present)
- Concrete tetrapods in certain sections
- Fishing boats
- Occasional fishing nets
Rescue & support
- Lifeguard
- Seasonal — Lifeguards are present during the official summer swimming season (July–August).
- Rescue & Self-Rescue
- Yes — Served by the Japan Coast Guard (emergency number 118) and local lifeguards in season.
- Emergency Info
- Nearest major medical facilities are located in Tateyama City.
- Localism / Vibe
- Mild — Local fishing access rules are important; respect fishing rights.
Rules of the spot
Avoid riding near designated swimming zones during summer months; respect local fishing rights. Launch restrictions may apply near fishing ports.
- Seasonal swimming zones in July and August
- Launch restricted near fishing ports
- Offshore winds are from the northeast, so plan around wind direction for cleaner surf.
- Check the forecast for typhoons moving toward the Sea of Japan, as they can trigger the best swells for this side of the peninsula.
- Parking can be difficult on weekends when waves are present.
Getting there & access
- Nearest City
- Minamiboso
- Nearest Town
- Minamiboso
- Parking
- Public parking is available along the coast road, though it fills up quickly during the peak summer season.
- Public Transport
- Accessible via the Tateyama Expressway from Tokyo or by local train to Tateyama Station.
- Cost Level
- Moderate
- Local Language
- Japanese
What's on the beach
- Accommodation
- Nearby town — Numerous hotels and traditional ryokans are located in the Tateyama and Minamiboso area.
- Food & Drink
- Local seafood restaurants and convenience stores are located within walking distance of the main beaches.
- Equipment Rental:
- Available at local surf shops and some beach clubs in the Tateyama area.
- Gear Repair
- Basic surfboard repair is available at local shops in Tateyama.
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 Uchiboso?
The best overall months at Uchiboso are August. The best wind months are August, September, October.
Which wind directions work at Uchiboso?
Uchiboso works with N, NE, ESE, S winds. Offshore directions are N, NE.
What equipment sizes are recommended at Uchiboso?
Recommended equipment sizes at Uchiboso: Kitesurfing: 10–14 m² · Windsurfing: 5.5–7.5 m² · Wingfoiling: 5–7 m². The typical wind range is 10–20 kts.
What skill level is Uchiboso suitable for?
Uchiboso suits these riding levels: Kitesurfing: Intermediate · Windsurfing: Intermediate · Wingfoiling: Beginner · Surfing: Beginner.