Grindavík
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Hourly Forecast
Timezone: Atlantic/Reykjavik
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Saturday 13
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Grindavík surf guide

Grindavík is a surf spot located on the southwestern coast of Iceland. It’s known for its rugged coastline and unique surf conditions. While it can be a bit challenging, it's also one of the more consistent spots you’ll find, especially during the summer months. The area has a raw beauty with lots of water movement, which can make for an interesting experience out on the waves.

The waves here are mostly a reef break, and they work best with a south swell, with some nice options from the southeast and southwest as well. You can catch waves that start around 2ft (about 0.6 meters) and go up to some hefty sizes. Right walls are the main attraction, but there are some lefts to ride too. When the swell picks up, especially above 3ft (0.9 meters), things can get intense. Big waves can cause heavy water conditions with crunching barrels forming over the uneven reef, and it's crucial to be cautious of the shallow spots at low tide. Optimal wind direction comes from the north, and any swell does best around low to mid tide, but it can also handle high tide without too much trouble. This spot is more suited for expert surfers due to its steep take-offs and less-than-perfect faces when conditions aren’t just right.

Getting to Grindavík is pretty straightforward; just drive straight through the town until the road ends. Then, take a right and head up the coast for a couple of minutes, and you’ll arrive. Keep in mind, while it’s one of the more reliable spots, it can get messy quickly because of its exposure. So don’t be surprised if the waves aren’t perfectly clean all the time. It's also common to find the surf lineup a bit lonely, so be prepared to go it alone if that's the case. Just be safe and enjoy the raw waves Grindavík has to offer.

Surf reports and surf forecasts nearby Grindavík

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Gardur
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Reef break
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Grindavík
Grindavikurbaer, Iceland
Reef break
Sat 13
Sun 14
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Rolling Stones
Grindavikurbaer, Iceland
Reef break
Sat 13
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Ollie´s Shipwreck
Grindavikurbaer, Iceland
Reef break
Sat 13
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Thorli Beach
Sveitarfelagid Olfus, Iceland
Beach break
Sat 13
Sun 14
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Thorli
Sveitarfelagid Olfus, Iceland
Point break
Sat 13
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Mangersta
Scotland, United Kingdom
Beach break
Sat 13
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Cliff
Scotland, United Kingdom
Beach break
Sat 13
Sun 14
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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.

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"Great Forecasts. Nothing more, nothing less."

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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