L’Horizon
Hourly
Confidence
Compare
⏱️s.
⚡️kJ
Friday 12
Saturday 13
Sunday 14
Monday 15
Tuesday 16
Timezone:
Europe/Paris
Wind: ⭐ UNIFIED
(20251212 10z)
Waves: ⭐ UNIFIED
(20251212 10z)
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L’Horizon surf forecast characteristics

Swell window
SW - NW
(Best from W)
Swell size
1ft - 8ft
Swell breaks over
Sand
Wave types
Beach
Wave directions
Left, Right
Wind window
E - E
(Offshore from E)
Works at
Low, Mid, High
Skill Level
Intermediate

L’Horizon surf forecast guide

L’Horizon is one of the lesser-known spots on the peninsula, offering a semi-secret wave that can surprise surfers on a good day. It's accessible for those coming from Arcachon, where you can take the pinnace across the basin and hop on the tramway that brings you right to the beach. With a few access points along the way, you'll find markers to help gauge the currents flowing from north to south. Just keep an eye out for the old bunkers and eroded jetties that can shape the coastline and create some big scallops.

The surf here is generally best with peaky, summer swells coming from the west, especially on smaller, lower tides. The spot can handle swell sizes starting from about 1ft (0.3m) and works well with swell directions from the southwest and northwest. You can expect beach breaks that peel both left and right, bringing some fun options for riders. The ideal wind direction is from the east, and the beach can accommodate surfers at low, mid, and high tide; however, it’s really more suited for those with intermediate skills.

While facilities are decent at a few access points, keep in mind that conditions can change quickly. The waves can get bigger with rising tides, and rips can become more challenging, making it less suitable for beginners. If you know what you're doing, though, L’Horizon can be a nice spot to catch some waves without dealing with a crowded peak.

Surf schools and rentals

Surf reports and surf forecasts nearby L’Horizon

Le Grand Crohot
Nouvelle Aquitaine, France
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Le Truc Vert
Nouvelle Aquitaine, France
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
L’Horizon
Nouvelle Aquitaine, France
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
La Pointe
Nouvelle Aquitaine, France
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
La Salie
Nouvelle Aquitaine, France
Unknown break
Fri 12
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.

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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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