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Surf forecast voor Costellos

Tide
⏱️s.
⚡️kJ
Tijdzone:
America/New_York
Forecast bijgewerkt:
30/06, 02:00
Wind: SN UNITY Atmos
(20260630 00z)
Golven: SN UNITY WAVE
(20260630 00z)
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Tijdlijn

Morgen di 30/06 tot wo 01/07
Geen surfvensters (2 dagen)
Ontgrendel 3 extra dagen in de tijdlijn
Hieronder volgen meer surfvensters en dagitems

Costellos Surf Forecast Gids

Engelse gids beschikbaar

Deze spotgids is nog niet beschikbaar in het Nederlands. Je kunt de volledige gids in het Engels lezen.

Lees de Engelse gids

Surfspots in de buurt van Costellos

Plaice Cove
New Hampshire, United States
Strand break
Tue 30
Wed 1
Thu 2
Fri 3
Sat 4
Costellos
New Hampshire, United States
Riff break
Tue 30
Wed 1
Thu 2
Fri 3
Sat 4
Fox Hill
New Hampshire, United States
Point break
Tue 30
Wed 1
Thu 2
Fri 3
Sat 4
Foxhill Point
New Hampshire, United States
Riff break
Tue 30
Wed 1
Thu 2
Fri 3
Sat 4
Linkys
New Hampshire, United States
Point break
Tue 30
Wed 1
Thu 2
Fri 3
Sat 4

Veelgestelde vragen

Wat zijn goede surfcondities voor Costellos?

Costellos is meestal het best met swell uit NE-SE rond 0.9 m / 3 ft tot 2.4 m / 8 ft, offshore wind uit W, en hoogwater. Hoogwater heeft de voorkeur.

Waar ligt surfspot Costellos?

Costellos is een surfspot in North Hampton, New Hampshire, United States.

Hoe is de surfbreak bij Costellos?

Costellos is een riff break over stenen met linkse golven.

Welke faciliteiten zijn er voor surfers bij Costellos?

Faciliteiten voor surfers bij Costellos: toiletten, douches, en lifeguard.

Kun je parkeren om te surfen bij Costellos?

Parkeren rond Costellos: betaald op meter en parkeergarage.

Welke surfspots liggen in de buurt van Costellos?

Andere surfspots in de buurt zijn Fox Hill, Foxhill Point, Plaice Cove, en Linkys.

Welke swellrichting werkt voor surfen bij Costellos?

Costellos kan werken met swell uit NE-SE.

Welke swellhoogte werkt voor surfen bij Costellos?

Costellos werkt meestal met swell rond 0.9 m / 3 ft tot 2.4 m / 8 ft.

Welke windrichting werkt het best voor surfen bij Costellos?

Offshore wind uit W is meestal het best bij Costellos.

Welke windrichting is offshore voor surfen bij Costellos?

Offshore wind komt bij Costellos uit W.

Welk getij werkt het best voor surfen bij Costellos?

Costellos werkt het best rond hoogwater. Hoogwater heeft de voorkeur. Opkomend tij is meestal beter.

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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"

Delen

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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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What you get
Free
SN+
Forecast range
5 days
15 days
Swell partitions
2
All
Wave energy
Not included
Forecast model access
Basic
All
Surf-window timeline
2 days
15 days
Compare forecasts
Not included
Confidence scores
Not included
Related sessions
Not included
Custom spots
5
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