St. Catherines Island
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Hourly Forecast
Timezone: America/New_York
⏱️s.
⚡️kJ
Saturday 13
Sunday 14
Monday 15
Tuesday 16
Wednesday 17
Thursday 18
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St. Catherines Island surf guide

St. Catherines Island is a secluded spot located off the coast of Georgia. Access to the island is limited as it's owned by the Saint Catherines Island Foundation, and you can only reach it by boat or by walking along the beach below the mean high water line. This isolation keeps the crowds away, making it a peaceful place for surfers looking to escape the busier spots. However, surfing here is pretty sporadic since the Georgia coast is positioned away from the typical surf zones found in the Carolinas and Florida. You’ll need a significant weather event, like a hurricane or nor'easter, to get consistent waves.

When the surf is on, the conditions can handle swell from the East NorthEast, East, East SouthEast, and SouthEast directions, with sizes ranging from about 1 to 2 meters (3 to 6 feet). The waves tend to work best on high tide with preferable wind coming from the West SouthWest, West, or even NorthWest. The bottom is sandy, which is typical for this region. Most of the time, the surf is on the smaller side, generally knee to chest high, making it suitable for beginner and intermediate surfers. Just remember, during major storms, the surf can pick up significantly, creating strong rip currents.

While the surf conditions can be hit or miss, you can use a variety of boards here, from shortboards to fish, funboards, and longboards. The best seasons to hit St. Catherines Island for surf are Autumn and Winter. Just keep an eye on the tides, as only the incoming and dead high tide work well here. The environment is beautiful, but be mindful of the isolation and some hazards like sharks and jellyfish while enjoying your session.

Surf reports and surf forecasts nearby St. Catherines Island

18th St. Jetty
Georgia, United States
Beach break, Jetty break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
South Tybee Sandbars
Georgia, United States
Beach break, Jetty break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Little Tybee Island
Georgia, United States
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Wassaw Island/South End
Georgia, United States
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Ossabaw Island
Georgia, United States
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
St. Catherines Island
Unknown Region, Unknown Country
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Blackbeard Island
Georgia, United States
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Cabretta Island
Georgia, United States
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Sapelo Island
Georgia, United States
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
Wolf Island
Georgia, United States
Beach break
Sat 13
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Fri 19
Sat 20
Sun 21
Mon 22
Tue 23
Wed 24
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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