A St.
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Hourly Forecast
Timezone: America/New_York
โฑ๏ธs.
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Thursday 18
Friday 19
Saturday 20
Sunday 21
Monday 22
Tuesday 23
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A St. surf guide

A St. is located south of the St. Augustine pier, about 16 blocks down from 16th Street. It can get pretty crowded, especially when the surf is on, but generally, it maintains a low-key vibe. You can park for free at the end of A Street, making it easy to access the beach without hassle.

The surf here is decent on small days, typically ranging from 1 to 3 feet (0.3 to 0.9 meters), and it can handle swells up to 10 feet (3 meters) during bigger days. A St. breaks well on both lefts and rights, primarily over sand. It works best with swells coming from the North to Southeast, particularly Northeast and East swells. Tides are relaxed here, functioning well at all tidal heights, but you might find it best to ride at mid to high tide. For beginners, intermediates, and experts alike, this spot offers fun rides on shortboards, funboards, longboards, and fish boards. Paddling can be chill most days, though it may require more effort when the surf picks up.

Keep in mind that while the wave is generally friendly, it can change with the shifting sands, so the quality varies over time. The crowd size can fluctuate, and even though it's mostly manageable, you should be prepared for busier days during prime surf seasons, especially in the fall and spring when conditions are typically best.

Surf reports and surf forecasts nearby A St.

Ponte Vedra
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Vilano Jetty
Florida, United States
Unknown break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Middles (Florida)
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Blowhole
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
F.A's
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
St. Augustine Pier
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
A St.
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
A Street
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Crescent Beach
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
Matanzas Inlet
Florida, United States
Beach break
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Thu 25
Fri 26
Sat 27
Sun 28
Mon 29
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 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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