Surf forecast voor Ostional

Tide

⏱️Periodes.

⚡️EnergiekJ

Tijdzone:

America/Costa_Rica

Forecast bijgewerkt:

29/06, 06:00

Wind: SN UNITY Atmos

(20260629 06z)

Golven: SN UNITY WAVE

(20260629 06z)

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Tijdlijn

Morgen ma 29/06

10:00 - 12:00

Beste

Stevig met rustige cross-onshore wind.

di 30/06

05:02 - 12:00

Beste

Stevig met lichte cross-offshore wind.

12:00 - 14:00

Stevig met lichte sideshore wind.

Ontgrendel 3 extra dagen in de tijdlijn

Hieronder volgen meer surfvensters en dagitems

Ostional 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 Ostional

Ostional

Provincia de Guanacaste, Costa Rica

Provincia de Guanacaste, Costa Rica

Provincia de Guanacaste, Costa Rica

Strand break, Canyon break

Provincia de Guanacaste, Costa Rica

Provincia de Guanacaste, Costa Rica

Veelgestelde vragen

Wat zijn goede surfcondities voor Ostional?

Ostional is meestal het best met swell uit S-WSW-NW, idealiter NW rond 0.6 m / 2 ft tot 2.4 m / 8 ft, offshore wind uit E, en middentij tot hoogwater.

Waar ligt surfspot Ostional?

Ostional is een surfspot in Santa Cruz, Provincia de Guanacaste, Costa Rica.

Hoe is de surfbreak bij Ostional?

Ostional is een strand break over zand met linkse en rechtse golven. Reken meestal op gemiddeld druk in het water.

Voor welk surfniveau is Ostional geschikt?

Ostional is geschikt voor surfers met niveau beginner.

Is Ostional geschikt voor beginnende surfers?

Ja. Ostional kan geschikt zijn voor beginners als de condities overzichtelijk zijn.

Hoe consistent is de surf bij Ostional?

Ostional is een van de consistentere surfspots in Provincia de Guanacaste, Costa Rica.

Welke faciliteiten zijn er voor surfers bij Ostional?

Faciliteiten voor surfers bij Ostional: camping.

Kun je parkeren om te surfen bij Ostional?

Parkeren rond Ostional: gratis en aan de straat.

Welke surfspots liggen in de buurt van Ostional?

Andere surfspots in de buurt zijn Nosara, Playa Nosara, Pelada, en Playa Guiones.

Welke swellrichting werkt voor surfen bij Ostional?

Ostional kan werken met swell uit S-WSW-NW; NW is meestal het best.

Welke swellhoogte werkt voor surfen bij Ostional?

Ostional werkt meestal met swell rond 0.6 m / 2 ft tot 2.4 m / 8 ft.

Welke windrichting werkt het best voor surfen bij Ostional?

Offshore wind uit E is meestal het best bij Ostional.

Welke windrichting is offshore voor surfen bij Ostional?

Offshore wind komt bij Ostional uit E.

Welk getij werkt het best voor surfen bij Ostional?

Ostional werkt het best rond middentij tot hoogwater. Opkomend tij is meestal beter.

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Forecast range

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Swell partitions

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Wave energy

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Confidence scores

Related sessions

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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

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.

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.

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