Playa Grande - Guanacaste
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Hourly Forecast
Timezone: America/Costa_Rica
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Saturday 13
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Wednesday 17
Thursday 18
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Playa Grande - Guanacaste surf guide

Playa Grande, located in Guanacaste and just a short distance from Tamarindo, is a popular surf spot nestled within Las Baulas National Park. This area is known for its stunning natural beauty and offers a unique mix of powerful waves and a relaxed vibe. It's about a 40-minute walk, a 20-minute drive, or a quick 5-minute boat ride from Tamarindo, making it easily accessible for surfers looking for a solid session.

The waves at Playa Grande can pack quite a punch, especially with the right swell. It typically handles swell sizes from 5 ft to 8 ft (1.5 m to 2.4 m) and picks up the SouthWest swell well, but it can also work with NorthWest swells. You’ll find both left and right peaks breaking over sandy bottoms, providing a mix of rippable sections and fun tubes. Mid to high tide seems to be the sweet spot, with head-high to slightly overhead waves being the most enjoyable. Be prepared to paddle out, as you might catch some waves on the head, but the good news is the peaks are pretty close to shore.

In terms of crowd, expect plenty of fellow surfers, especially when conditions are firing. The local vibe is lively, with locals and Tamarindo surfers eager to get in on the action. The best times to surf here are from March through October for the most consistent swells, but the offseason can offer some great offshores as well. Various board types work well here, from shortboards to longboards, so you can choose your ride based on your skill level, whether you’re a beginner or looking for fun with a fish or a bodyboard.

Surf reports and surf forecasts nearby Playa Grande - Guanacaste

Flamingo Point
Provincia De Guanacaste, Costa Rica
Point break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
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Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Playa Grande - Guanacaste
Unknown Region, Unknown Country
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
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Mon 22
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Wed 24
Tamarindo
Unknown Region, Unknown Country
Beach break
Sat 13
Sun 14
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Sun 21
Mon 22
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Tamarindo
Provincia De Guanacaste, Costa Rica
Beach break, Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
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Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Langosta
Unknown Region, Unknown Country
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
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Sun 21
Mon 22
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Wed 24
Avellana
Unknown Region, Unknown Country
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
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Thu 18
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Sun 21
Mon 22
Tue 23
Wed 24
Playa Negra - Guanacaste
Provincia De Guanacaste, Costa Rica
Reef break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
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Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
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Playa Marbella
Unknown Region, Unknown Country
Beach break
Sat 13
Sun 14
Mon 15
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Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
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Wed 24
Ostional
Unknown Region, Unknown Country
Beach break
Sat 13
Sun 14
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Playa Nosara
Unknown Region, Unknown Country
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
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Readme

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.

Log your surf sessions to compare forecasts with real sessions and sharpen future predictions.

Models and Updates

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.

Surf Predictions

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:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm — the more you log, the smarter your forecasts get.

With Surfnerd, no more "you should have been here yesterday"

Wind certainty

Wind certainty tells you how much the weather models agree on the forecast.

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

We calculate this by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. 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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