Boca Barranca
Hourly
Confidence
Compare
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⚡️kJ
Thursday 06
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Tap a forecast cell to explore conditions on the map.
Timezone: America/Costa_Rica
Wind: GFS (20251105 18z)
Waves: GFS WAVE (20251105 18z)

Boca Barranca surf guide

Boca Barranca is a well-known surf spot located in Costa Rica, conveniently close to San Jose. This long left-hand point break is popular among surfers and offers the chance for extended rides, making it one of the favorite spots in the region. It's easy to access, especially since it's near a major bridge that connects different parts of the country. However, because it's a popular spot, don't be surprised if the lineup is busy when conditions are good.

The waves here are best on a S-SW swell and can handle sizes from about 3 to 8 feet (approximately 1 to 2.5 meters). On the right day, you can score long rides of around 800 yards (about 730 meters), especially during low to mid tides. The bottom is made up of a mix of flat rocks and sand, and the waves tend to break nicely as a river mouth wave, coming in mainly left. Ideal wind conditions are from the east, making it a solid spot for different levels of surfers, but it really caters to intermediate abilities and works well for shortboards, funboards, longboards, and fish.

While you will find plenty of longboarders enjoying the mellow sections, it's important to be aware that the crowd factor tends to rise when the surf is good. Boca Barranca is also popular for competitions, so expect a bit of a local vibe as you navigate the waves. Plan your visit during the summer season for the best conditions.

Surf reports and surf forecasts nearby Boca Barranca

Boca Barranca
Provincia De Puntarenas, Costa Rica
Rivermouth break
Thu 6
Fri 7
Sat 8
Sun 9
Mon 10
Tue 11
Wed 12
Thu 13
Fri 14
Sat 15
Sun 16
Mon 17
Puerto Caldera
Provincia De Puntarenas, Costa Rica
Rivermouth break
Thu 6
Fri 7
Sat 8
Sun 9
Mon 10
Tue 11
Wed 12
Thu 13
Fri 14
Sat 15
Sun 16
Mon 17
Tivives
Unknown Region, Unknown Country
Beach break
Thu 6
Fri 7
Sat 8
Sun 9
Mon 10
Tue 11
Wed 12
Thu 13
Fri 14
Sat 15
Sun 16
Mon 17
Playa Escondida
Puntarenas Province, Costa Rica
Reef break
Thu 6
Fri 7
Sat 8
Sun 9
Mon 10
Tue 11
Wed 12
Thu 13
Fri 14
Sat 15
Sun 16
Mon 17
Playa Jaco
Puntarenas Province, Costa Rica
Beach break
Thu 6
Fri 7
Sat 8
Sun 9
Mon 10
Tue 11
Wed 12
Thu 13
Fri 14
Sat 15
Sun 16
Mon 17
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Confidence

Confidence tells you how much the weather models agree on the forecast.

  • High confidence: Models agree closely; forecast is reliable.
  • Medium confidence: Some disagreement; conditions may shift slightly.
    • Low confidence: Models diverge; treat forecast with caution.

We calculate the wind confidence by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. For wave certainty we compare height, period and direction, also on multiple models. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

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Welcome! If you’re new to surf forecasting, check out this quick guide.

Forecast Table

The forecast table (the section on the page with all the numbers) is designed to pack as much information in the screen as possible. Although intimidating at first, it will help you make informed decisions about the waves faster, trust me :D. The table consists of roughly four sections, time and predictions, wind, waves, and tides:

🔮 Time and predictions section

Here we show the forecast thour and the overall surf quality prediction. This is determined based on the wave, wind and tide quality prediction. These individual predictions can be found on the forecast map.

💨 Wind section

The first row on the table (with the 💨 icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

🌊 Wave section

The waves section consists of three rows, one for wave height and direction, one for period and one for wave energy. Our algorithm choices the "dominant wave". This is normally the first swell partition, but with heavy local storms it displays the wind waves. If that's the case, we display the numbers in italic and in gray.

🌒 Tide section

The tide section consists of a row with the actual heights per hour (measured at the half hour) and a table that displays the flow of the tide and the extremes (lows and highs).

Forecast map

The forecast map consists of arrows. These arrows represent all wave partitions (swell partitions and wind wave partition) and the wind. This allows you to see things like: a secondary swell or wind waves messes up the surf, or the wind is just a tick offshore so very surfable. Click a metric label in the bottom left to bring that arrow to the front — handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. It’s the best single metric to gauge how big and powerful the waves will be.

Click any table cell to jump to that forecast hour. The map will update with forecast arrows, so you can see if wind and swell direction are lining up.

Use the table sidebar to switch units for height and speed.

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Surfnerd blends multiple global and local wind and swell models using advanced interpolation and spatial techniques to create an "ensemble" forecast. Forecasts are refreshed hourly.

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Our AI-driven algorithm scores surf quality, shown by green, orange, and gray dots. Each forecast hour is rated for wind, swell, and tide quality, then combined into an overall score. Here’s the scale:

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