Infiernillo
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Timezone: America/Santiago

Infiernillo surf guide

Infiernillo is located just south of Pichilemu and is often considered a hidden gem in the region. This spot is known for its fast left point break that can sometimes be tricky to ride. It tends to have a sand bottom with a few scattered rocks, and the crowd situation is usually better than nearby Punta de Lobos, especially during quieter times. Access is straightforward, as you can park right at the base of the point/headland, making it easy to get to the water.

The surf at Infiernillo can get pretty exciting, handling swell sizes from about 5ft to 7ft (1.5 to 2.1 meters). The best conditions usually arrive with southwesterly swells, and when the sand is just right, it can feel a bit like riding a reverse Burleigh Heads. The left-handed waves tend to be hollow and require a good amount of speed to make it through the sections. On average days, paddling isnโ€™t too bad, but it can become challenging when the waves are big. Itโ€™s best to go for a high-speed line, and after a few sessions, you can start to relax and work on making those tubes. Just be careful when the waves are large as it can get complex out there.

Infiernillo is best surfed during the autumn months, particularly in March and April. A low tide works well here, and you can expect the preferable wind directions to be from the northeast to east. The spot is suited for intermediate to expert surfers, especially those on shortboards. While the local vibe can get a bit intense after school with crowds, early morning dawn patrols often mean you can enjoy some empty waves. Just remember to show humility and respect to the local surfers; it goes a long way.

Surf reports and surf forecasts nearby Infiernillo

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Welcome! If youโ€™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:

๐Ÿ”ฎ 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.

๐Ÿ’จ Wind section

The first row on the table (with the ๐Ÿ’จ icon) shows wind speed, direction and gust. The more the wind speed the more aggressive the color (from blue, green, orange to red).

๐ŸŒŠ 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.

๐ŸŒ’ 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 โ€” handy when arrows overlap.

Forecast Cheat Sheet

Short on time? Focus on wave energy. Itโ€™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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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. Hereโ€™s the scale:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm โ€” the more you log, the smarter your forecasts get.

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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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