Surf forecast Japaratinga: swell, wind and tide

Weather

Thursday 08/10

Water temperature

80°F

Daily average

Air temperatureBeta

Over water: 78–80°F
On shore: 70–86°F

Moon phase

Waning crescent

5% illuminated

Closest moon phase

New moon

Sat 10/10 12:51 pm

Tide range

-0.8ft - 5.9ft

Low 09:02 am · High 02:25 am

Next spring tide

Mon 26/10

6.9ft range

Next neap tide

Sat 17/10

2.0ft range

Surf spots near Japaratinga

Japaratinga

Alagoas, Brazil

Unknown break

Thu 8

Fri 9

Sat 10

Sun 11

Mon 12

Praia de Morros

Alagoas, Brazil

Unknown break

Thu 8

Fri 9

Sat 10

Sun 11

Mon 12

Mirante da Sirena

Alagoas, Brazil

Unknown break

Thu 8

Fri 9

Sat 10

Sun 11

Mon 12

Garca Torta

Alagoas, Brazil

Unknown break

Thu 8

Fri 9

Sat 10

Sun 11

Mon 12

Praia de Jatiuca

Alagoas, Brazil

Unknown break

Thu 8

Fri 9

Sat 10

Sun 11

Mon 12

Frequently asked questions

What are good surfing conditions for Japaratinga?

Japaratinga is usually best with offshore wind from southeast (SE).

Where is the surf spot Japaratinga?

Japaratinga is a surf spot in São Miguel dos Milagres, Alagoas, Brazil.

What surf spots are near Japaratinga?

Other nearby surf spots are Praia de Morros, Mirante da Sirena, Garca Torta, and Praia de Jatiuca.

What wind direction is best for surfing at Japaratinga?

Southeast (SE) is offshore at Japaratinga.

What wind direction is offshore for surfing at Japaratinga?

Southeast (SE) is offshore at Japaratinga.

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.

🎯 Model agreement

The small letter in the wind and wave cells shows how closely the weather models we blend agree for that hour.

H, the models line up closely.
M, the models differ somewhat, so conditions may still shift.
L, the models disagree, so check again closer to your session.
A dash means only one model covered this hour, so there was nothing to compare.

For wind we compare each model's wind vector, plus gusts where every model reports them. For waves we compare height, period and direction of the matched swell systems.

It is a measure of model agreement, not a probability that the forecast is right.

🌒 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"

Surf forecast for Japaratinga

Weather

Timeline

Japaratinga Surf Forecast Guide

Surf spots near Japaratinga

Frequently asked questions

Login to your Surfnerd account

Readme

Forecast Table

🔮 Time and predictions section

💨 Wind section

🌊 Wave section

🎯 Model agreement

🌒 Tide section

Forecast map

Forecast Cheat Sheet

Models and Updates

Surf Predictions

Open in the app