Jupiter Inlet South Jetty
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Hourly Forecast
Timezone: America/New_York
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Wednesday 03
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Monday 08
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Jupiter Inlet South Jetty surf guide

Jupiter Inlet South Jetty is a well-known surf spot located in Palm Beach County. It’s a popular place for surfers of all levels, often drawing in crowds due to its decent waves and accessibility. The jetty itself provides a bit of protection from the wind while creating some fun surfing conditions, making it a favored choice for local surfers and visitors alike. Facilities are available to handle the number of people that frequent this break, which makes it pretty convenient despite the hustle and bustle.

The surf here tends to be ideal on low incoming tides, especially with swells coming from the NNE (about 1.2 meters to 3 meters). You'll find a nice inside peak during smaller swells and an outside right that really wakes up on bigger east swells. The main peak is located outside between the jetty and the lifeguard tower, where many sections of the paired sandbars create long, fun walls. When conditions align just right, the waves might even feel a bit like a pointbreak. Beginners can have a go when it’s mellow, but it's good to remember that with the right swells, it can get challenging. The bottom is sandy, making it a comfortable area for various board types, including shortboards, fish, funboards, and longboards.

Expect a good deal of crowding, especially on nice days, but the local vibe has mellowed over time. The spot pulls in waves from a range of swells, handling sizes from 4 ft to 10 ft (about 1.2 m to 3 m). Preferred wind directions are typically from the west, and the action really kicks off in the fall to spring seasons when the conditions are more favorable. If you’re looking for some fun waves, it can definitely be worth a visit, just be ready to share the lineup!

Surf reports and surf forecasts nearby Jupiter Inlet South Jetty

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Florida, United States
Beach break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
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Fri 12
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Jupiter Inlet South Jetty
Florida, United States
Unknown break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Juno Pier
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Unknown break
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Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
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Florida, United States
Beach break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Reef Road
Florida, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Reef Road
Florida, United States
Reef break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
Sat 13
Sun 14
Sunrise
Florida, United States
Unknown break
Wed 3
Thu 4
Fri 5
Sat 6
Sun 7
Mon 8
Tue 9
Wed 10
Thu 11
Fri 12
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.

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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