'L' Jetty
Hourly
Confidence
Compare
⏱️s.
⚡️kJ
Sunday 14
Monday 15
Tuesday 16
Wednesday 17
Thursday 18
Timezone:
America/New_York
Wind: ⭐ UNIFIED
(20251214 01z)
Waves: ⭐ UNIFIED
(20251214 01z)
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'L' Jetty surf forecast characteristics

Swell window
NE - S
(Best from E)
Swell size
2ft - 6ft
Swell breaks over
Sand
Wave directions
Left, Right
Wind window
W - W
(Offshore from W)
Works at
Low, Mid
Skill Level
Beginner
Seasons
Autumn, Winter
Board types
Shortboard, Fish, Funboard, Longboard, Bodyboard

'L' Jetty surf forecast guide

'L' Jetty in Avon is a spot that you don’t want to miss if you’re in the area. It's important to note that this is not the L Jetty you might find in Deal. The jetty has an L shape and primarily breaks with a southerly swell. The waves here can be a bit tricky, and the conditions are highly dependent on the tides. It's generally best to surf during low to mid tide when the swell starts to hit. You'll find a mixture of sand bottom and some nooks around the jetty that change the experience. It can turn from decent surfing to not so great pretty quickly based on the swell and tide alignment. If the right conditions come together, you might find yourself riding some good waves.

The waves at 'L' Jetty can range from waist high (approximately 0.9 meters) to well overhead (up to about 2.4 meters). The spot handles a variety of swell sizes, typically from 3 feet (around 0.9 meters) up to 8 feet (roughly 2.4 meters). It works best with east winds, and the preferred swell directions are from the east, south, and southeast. You'll find both left and right waves breaking here, but keep in mind that the waves are known for being backwashy, especially at low tide. The crowd factor is usually mellow to moderate, making it a relatively chill place to surf, although the vibe is moderately local, so be respectful. Surfers of all abilities will find something suitable here, whether you’re on a shortboard, fish, funboard, longboard, or bodyboard.

Access to 'L' Jetty is pretty easy, but make sure to keep an eye out for beach badges in the summer, as they are required. The environment is mostly clean, and you should be cautious of some hazards like shallow bottoms and rip currents. The best surf season here is during autumn and winter, specifically from September through March, when the surf is usually more consistent. If you can catch it on the right day, it can really be a fun spot to ride some waves.

Surf schools and rentals

Surf reports and surf forecasts nearby 'L' Jetty

Belmar to Sea Girt
New Jersey, United States
Unknown break
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
16th Ave., Belmar
New Jersey, United States
Beach break
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
'L' Jetty
New Jersey, United States
Unknown break
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Belmar Fishing Pier
New Jersey, United States
Unknown break
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
Bradley Beach
New Jersey, United States
Unknown break
Sun 14
Mon 15
Tue 16
Wed 17
Thu 18
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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"

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.