13th Street
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Hourly Forecast
Timezone: America/Los_Angeles
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Friday 12
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Wednesday 17
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13th Street surf guide

13th Street in Seal Beach is a popular spot for surfers looking for a mix of waves. While it's not the best around, it can deliver some fun sessions, especially during the winter when the swell is right. Access is easy since you can park at the pier and walk down to the beach. Keep in mind, it can get pretty crowded, especially when the sand conditions are prime. The local vibe can be a bit tough, but things tend to stay civil since the waves don’t always deliver.

The surf at 13th Street is mainly a beach break that offers both lefts and rights. Typically, the waves range from waist-high (about 1 meter) to overhead (around 3 meters). The best time to surf here is during low to mid tides. When big west swells roll in, the break can get particularly gnarly, so be prepared for some steep and hollow rides. Though you can catch waves from 1 meter to 3 meters, the spot can handle swells up to about 3 meters (10 feet) in size, especially during exceptional conditions like an El Nino winter. The optimal swell direction is from the southwest, with ideal winds coming from the northeast.

Surfing here is suited for intermediate surfers, given the possible challenges with the currents and shorepound. It’s a typical paddle-out at beach breaks, so make sure you’re ready for that. You'll see a variety of boards out here, from shortboards and longboards to fishes and bodyboards. Just be aware that while it's a decent spot, there are usually better waves close by, but 13th Street can surprise you when everything aligns just right.

Surf reports and surf forecasts nearby 13th Street

Anderson Street
California, United States
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Surfside Jetty
California, United States
Unknown break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Dolphin Avenue
California, United States
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
13th Street
California, United States
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Seal Beach Pier
California, United States
Unknown break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
7th Street
California, United States
Beach break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Seal Beach Jetty
California, United States
Beach break, Pier break, Jetty break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
72nd Place
California, United States
Reef break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
San Gabriel Rivermouth
California, United States
Rivermouth break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
64th Place
California, United States
Reef break
Fri 12
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
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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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