Avellana
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Hourly Forecast
Timezone: America/Costa_Rica
⏱️s.
⚡️kJ
Wednesday 17
Thursday 18
Friday 19
Saturday 20
Sunday 21
Monday 22
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Avellana surf guide

Avellanas is a surf spot located about 30 minutes south of Langosta. It's known for its range of breaks, with a combination of rocky reef breaks, beach breaks, and a rivermouth. The beach stretches for about 2 kilometers and can often deliver waves that are even better than what you’ll find at Langosta. Since Avellanas typically picks up more swell than Tamarindo, it’s worth checking out when Tamarindo is looking flat. The vibe here is a mix of expats and tourists, although there are a few locals around as well. Just keep in mind, it's not the most beginner-friendly spot.

The surf at Avellanas is pretty diverse. There are six named breaks, starting with Little Hawaii at the northern point, which does well with bigger SW swells and tends to have smaller crowds. El Estero is the rivermouth break that often gets bigger and peaks right at a notable rock. Then you've got El Palo and the Right, which are classic beach breaks, better at mid to high tide and work well with both SW and NW swells. The Left, located right in front of the parking lot, can get tricky as it zooms over some unfriendly lava. For more experienced surfers, there’s an outside bommie peak that can provide challenging waves. The swell here can handle sizes from about 4ft (1.2m) to 10ft (3m) and the preferable wind direction is from the east. The waves can break both left and right over a combination of uneven reef and sand.

Access to the beach is through one unguarded parking lot that fits about 50 vehicles, plus extra parking along the dirt road. There are wooden walkways through the mangroves leading down to the beach from Cabinas Las Olas. The crowds can be manageable since the variety of peak options helps to spread things out, making it feel less crowded. Although the locals can be a bit unfriendly at times, overall, the environment is relatively clean and there’s a decent surf scene here with options for different skill levels, including beginner, intermediate, and advanced surfers.

Surf reports and surf forecasts nearby Avellana

Flamingo Point
Provincia De Guanacaste, Costa Rica
Point break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Playa Grande - Guanacaste
Unknown Region, Unknown Country
Beach break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Tamarindo
Unknown Region, Unknown Country
Beach break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Tamarindo
Provincia De Guanacaste, Costa Rica
Beach break, Reef break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Langosta
Unknown Region, Unknown Country
Beach break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Avellana
Unknown Region, Unknown Country
Reef break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Playa Negra - Guanacaste
Provincia De Guanacaste, Costa Rica
Reef break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Playa Marbella
Unknown Region, Unknown Country
Beach break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Ostional
Unknown Region, Unknown Country
Beach break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Nosara
Unknown Region, Unknown Country
Beach break, Canyon break
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
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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.

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.

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