Cardiff Reef
Hourly
Confidence
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โฑ๏ธs.
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Wednesday 29
Thursday 30
Friday 31
Saturday 01
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Monday 03
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Timezone: America/Los_Angeles

Cardiff Reef surf guide

Cardiff Reef is a popular surf spot located right off the 101. Itโ€™s known for its consistent waves and beautiful scenery. Although it can get pretty crowded due to its reputation, there's usually enough space to find your own wave. Access is easy from the pay lot directly in front of the break.

The surf here can be pretty fun, especially with the right swell. In the summer months, the waves tend to be softer, but as winter rolls in, they really pick up. The best swells come from the west, but you can also catch decent waves from the south and northwest. The reef to the north is called Tippers, which offers fast lefts and shorter, mushy rights. Be careful, though, as it can get intense and crowded. Just to the south is Suckouts, known for its challenging right-hand barrels that break over a very shallow reef, so this oneโ€™s really for experts only. If you prefer something a bit more mellow, check out the South Peak in front of the parking lot. It features long, quality rights that can line up well, especially during low tide. Watch out during big swells, as it can be hard to get out.

At Cardiff Reef, you can handle swell sizes starting from about 2 feet (0.6 meters) and going up, breaking over rock ledges and sand. The preferred wind direction is from the east, and the spot works well at low, mid, and high tide. This surf spot is definitely more suited for those with expert abilities, so make sure youโ€™re ready to tackle it. Whether youโ€™re looking to throw down some turns or go for a barrel, Cardiff Reef has something to offer, as long as youโ€™re okay with sharing the waves.

Surf reports and surf forecasts nearby Cardiff Reef

Sandbox
California, United States
Beach break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Pipes/Campgrounds
California, United States
Reef break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Cardiff Reef
California, United States
Reef break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Cardiff Reef
California, United States
Reef break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Pipes
California, United States
Reef break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Georges
California, United States
Beach break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Swamis
California, United States
Reef break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Seaside Reef/South Cardiff State Beach
California, United States
Reef break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Seaside Reef
California, United States
Beach break, Reef break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
Tabletop/Solana Cove
California, United States
Beach break
Wed 29
Thu 30
Fri 31
Sat 1
Sun 2
Mon 3
Tue 4
Wed 5
Thu 6
Fri 7
Sat 8
Sun 9
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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.

Readme

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.

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. 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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