Duranbah (D-Bah) Surf Forecast

Tide
⏱️s.
⚡️kJ
Tijdzone:
Australia/Sydney
Forecast bijgewerkt:
16/06, 16:00
Wind: SN UNITY Atmos
(20260615 12z)
Golven: SN UNITY WAVE
(20260615 12z)
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Golfopbouw

Swell 1Swell 2Swell 3Wind waves

Duranbah (D-Bah) Surf Forecast Eigenschappen

Swell venster
NO - Z
(Beste uit O)
Swell hoogte
1ft - 10ft
Swell breekt over
Zand
Golfrichtingen
Rechts
Wind venster
W - W
(Offshore uit W)
Werkende getijden
Laag, Mid, Hoog
Niveau
Gevorderde

Duranbah (D-Bah) Surf Forecast Gids

Duranbah, commonly known as D-Bah, is located on the north side of the Tweed River, yet it still sits in New South Wales. The border runs along Boundary Street, just above the northern end of the beach. This spot is well-known among surfers for its powerful wedging peaks, thanks to the addition of the rivermouth jetties. D-Bah can hold some impressive waves and is often a go-to for many surfers looking for fun conditions, especially when other spots are flat.

D-Bah picks up swell really well, particularly with optimal swell coming from the east and swells from the northeast and south. It can handle swell sizes starting at around 1ft (0.3 meters) and produces A-frame wedges that are appealing for intermediate surfers. The waves tend to break over sand and can generally be relied on for some decent tube time, though they can also close out quite often. The best action usually happens when the wind is coming from the west and at any tide level—low, mid, or high. However, keep in mind that the crowd can be heavy, so it might make sense to scout out other nearby beaches if you prefer a more relaxed session.

Plus, it's worth noting that D-Bah has a sizeable local crew, so be prepared to share the waves. Over the years, there have been numerous shark incidents in the area, so it's something to keep in mind when you're out in the water. Overall, if you’re up for some fun sessions and don’t mind the crowd, Duranbah could be a solid choice.


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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 chooses the "dominant wave" using spot-adjusted surf energy (depth + directional fit). This is usually the first swell partition, but during local storms it can switch to wind waves. If that happens, values are shown in gray and italic.

🌒 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"

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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.

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