Joaquina
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Hourly Forecast
Timezone: America/Sao_Paulo
⏱️s.
⚡️kJ
Tuesday 16
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Joaquina surf guide

Joaquina Beach is the center of surfing in Santa Catarina, Brazil. Known for its consistent waves, it’s one of the most popular surf spots in the region. The beach features a sandy bottom with shifting sandbars that offer good conditions throughout the year. The town council has even installed stadium lighting, allowing for night surfing when the waves are fun. The area is easily accessible, making it a go-to spot for surfers visiting Florianopolis.

The surf at Joaquina can handle a range of swell sizes from about 1 meter (3 ft) up to an impressive 4.5 meters (15 ft). The best swell direction is Southeast, but it can also pick up swells from the Northeast and South. Most of the good waves here break to the left, but you can find rights too. The winds are usually best from the Northwest, particularly for cleaner conditions. Ideal tide heights are low to medium, but the beach breaks well across all tides. While it can get serious and heavy when the swell is big, it’s also suitable for beginners when conditions are smaller and more manageable.

Joaquina is known for its competitive vibe, so expect a heavy crowd, especially on solid days. The local scene can range from serious to a bit aggressive, particularly when the surf is pumping. The beach breaks are fairly consistent, and even in the off-season, there’s usually something to ride. Autumn and winter are the best seasons for the best waves, so if you're planning to surf, those are the prime times to visit.

Surf reports and surf forecasts nearby Joaquina

Santinho
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Reef break
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Moçambique
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Beach break
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Mocambique
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Beach break
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Galheta
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Beach break
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Mole
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Beach break
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Joaquina
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Beach break
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Campeche
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Beach break
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Morro das Pedras
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Reef break
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Matadeiro
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Rivermouth break
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Lagoinha do Leste
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Beach break
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Wind certainty

Wind certainty tells you how much the weather models agree on the forecast.

  • High certainty: Models agree closely; forecast is reliable.
  • Medium certainty: Some disagreement; conditions may shift slightly.
  • Low certainty: Models diverge; treat forecast with caution.

We calculate this by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. 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 choices the "dominant wave". This is normally the first swell partition, but with heavy local storms it displays the wind waves. If that's the case, we display the numbers in italic and in gray.

🌒 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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