Hayle Rivermouth
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Hourly Forecast
Timezone: Europe/London
⏱️s.
⚡️kJ
Saturday 13
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Hayle Rivermouth surf guide

Hayle Rivermouth is a surf spot located in Cornwall that offers a mix of experiences for surfers. This spot boasts a big, sheltered area with shifting sands, which allows for varying surf conditions. It can throw some fun waves your way, but don’t be surprised if it turns into a fickle spot, where conditions can change quickly. Expect the tides to drop out and push in rapidly, transforming the surf from decent peaks to close-outs in no time.

The best surf here works with swells coming from the NW and big SW, producing waves ranging from about 0.6 meters (2 feet) up to 2.4 meters (8 feet). The waves tend to break over sand, predominantly offering right-hand waves. The ideal wind direction is from the south, and the best tide height tends to be around low to mid. Keep in mind, this spot is better suited for intermediate surfers. You might find it crowded when conditions are right, so be prepared to share the lineup when it’s pumping.

For access, there’s pay parking available at Bluff Inn, but be warned that it can be a bit rippy and have some currents around the rivermouth area. The spot works best during the winter months, specifically from December to February, making it a popular choice during that season. You can use various board types here, from shortboards to fish, depending on your preference and the conditions.

Surf reports and surf forecasts nearby Hayle Rivermouth

Porthmeor
Unknown Region, Unknown Country
Beach break
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Carbis Bay
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Beach break
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Hayle Rivermouth
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Rivermouth break
Sat 13
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Gwithian
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Beach break
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Godrevy
Unknown Region, Unknown Country
Beach break
Sat 13
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Perranuthanoe
Unknown Region, Unknown Country
Beach break
Sat 13
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Praa Sands
Unknown Region, Unknown Country
Beach break
Sat 13
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Portreath - Beach
England, United Kingdom
Beach break
Sat 13
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Portreath - The Wall
England, United Kingdom
Reef break
Sat 13
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Portreath - The V
England, United Kingdom
Unknown break
Sat 13
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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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