Surfnerd Logo

Surf forecast for Praia Dona Luiza

Map showing Praia Dona Luiza
Wwvs
0.3ft 1s.
0kJ
Swl 3
0.3ft 12s.
3kJ
Swl 2
0.3ft 7s.
2kJ
Swl 1
2.3ft 10s.
131kJ
Wnd
4mph
10mph
Tide
Mapbox© Mapbox© OpenStreetMapImprove this map
💨mph
🌊ft
⏱️s.
⚡️kJ
Timezone:
America/Sao_Paulo
Forecast updated:
07/10, 03:00 am
Wind: SN UNITY Atmos
(20261007 00z)
Waves: SN UNITY WAVE
(20261007 00z)

Weather

Wednesday 07/10

Water temperature
71°F
Daily average
Air temperatureBeta
Over water
70–73°F
On shore
68–80°F
Moon phase
Waning crescent
10% illuminated
Closest moon phase
New moon
Sat 10/10 12:51 pm
Tide range
-0.5ft - 3.8ft
Low 07:32 am · High 12:58 pm
Next spring tide
Sat 10/10
5.1ft range
Next neap tide
Fri 16/10
1.1ft range

Timeline

Praia Dona Luiza Surf Forecast Guide

Praia Dona Luiza is a surf spot on the coast of Brazil. There isn't much detail available on how it breaks, so check the live forecast for swell, wind, and tide, and read the conditions on the day before you paddle out.

Surf spots near Praia Dona Luiza

Restinga a Marambaia
Rio De Janeiro, Brazil
Unknown break
Wed 7
Thu 8
Fri 9
Sat 10
Sun 11
Praia da Pedra
Rio De Janeiro, Brazil
Unknown break
Wed 7
Thu 8
Fri 9
Sat 10
Sun 11
Praia do Aterro
Rio De Janeiro, Brazil
Unknown break
Wed 7
Thu 8
Fri 9
Sat 10
Sun 11
Praia Dona Luiza
Rio De Janeiro, Brazil
Unknown break
Wed 7
Thu 8
Fri 9
Sat 10
Sun 11
Praia de Sepetiba
Rio De Janeiro, Brazil
Unknown break
Wed 7
Thu 8
Fri 9
Sat 10
Sun 11

Frequently asked questions

Where is the surf spot Praia Dona Luiza?

Praia Dona Luiza is a surf spot in Rio de Janeiro, Rio De Janeiro, Brazil.

What surf spots are near Praia Dona Luiza?

Other nearby surf spots are Praia de Sepetiba, Praia do Aterro, Praia da Pedra, and Restinga a Marambaia.

Open in the app

Scan the QR code to open the Surfnerd app

Surfnerd Logo
More good sessions. Less time wasted.
What you get
Free
SN+
Forecast range
5 days
15 days
Surf-window timeline
5 days
15 days
Watched spots
1
Compare forecasts
Not included
Model agreement
Not included
Related sessions
Not included
Custom spots
5
Compare all features
Free for 7 days. No payment details needed. One trial per account.
Share
Join Surfnerd
Watch and save spots, log your sessions and set up the forecast your way. It's free.
Sign up with AppleSign up with Google
or signup with email

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"

Surfnerd Logo

Login to your Surfnerd account

Log your sessions, save your favorite spots, and keep your surf forecast personalized.

Log in with AppleLog in with Google
or signup with email