Penascal
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Hourly Forecast
Timezone: America/Lima
⏱️s.
⚡️kJ
Thursday 28
Friday 29
Saturday 30
Sunday 31
Monday 01
Tuesday 02
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Penascal surf guide

Penascal is a surf spot known for its fairly heavy right-handed waves. It's a unique place where the surf can really turn on, especially during the season from March to October. The access to the spot is pretty simple, so you won’t have much trouble getting there. Just keep in mind that it can get crowded, but the wave has a way of accommodating surfers, so it’s not too bad. The vibe here is generally mellow, making it a chill place to hang out and enjoy the ocean.

The waves at Penascal can range from about 2 to 4 meters (overhead to quadruple overhead) and handle swell sizes from 6ft to 12ft (about 1.8m to 3.7m). They work best on a low tide and can be a bit shifty and technical due to the rock bottom. The waves break over rock, and while they’re typically bowly and thick, you’ve got to be cautious of the occasional rocky hazards. The ride can be long, but it's a spot that requires some skill to master, making it more suitable for intermediate surfers. The preferred wind direction is from the North Northeast, but you can also catch fun waves with winds coming from the East or Southeast.

Paddling out here is considered to be medium in difficulty, so be ready for a bit of a workout. If you’re into shortboards or guns, you’ll find Penascal a decent place to ride. Just remember to always be aware of your surroundings and avoid turning your back to the ocean. Overall, it’s a fun spot to check out, especially if you're looking for an adventure.

Surf reports and surf forecasts nearby Penascal

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Lima Province, Peru
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Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
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Sat 6
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Mon 8
La Isla
Lima Province, Peru
Reef break
Thu 28
Fri 29
Sat 30
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Mon 1
Tue 2
Wed 3
Thu 4
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Sat 6
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Thu 28
Fri 29
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Sun 31
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Tue 2
Wed 3
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Santa Rosa
Lima Province, Peru
Reef break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
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El Huayaco
Lima Province, Peru
Reef break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
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Peña Rosa
Unknown Region, Unknown Country
Reef break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Peñascal
Unknown Region, Unknown Country
Reef break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Penascal
Provincia De Lima, Peru
Reef break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Naplo
Provincia De Lima, Peru
Beach break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Playa Chilca
Lima Region, Peru
Beach break
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
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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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