Surf Forecasts:
Prainha surf forecast from 3 Aug 2026:
- Best quality surf: Monday 3 Aug, 12AM (local time) - 2.5ft (0.7m), 8s period, E swell with offshore winds.
- Most powerful swell: Sunday 9 Aug, 9PM (local time) - 4ft (1.2m), 6s period, SE swell with 102 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 12AM (local time) - 2.5ft (0.7m), 8s period with E swell.
Best Forecast Surf Conditions for Prainha this week:
The surf forecast for Prainha over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 03) at 12AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.4m and 4s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 1.2m 6s and forecast to arrive on Sunday (Aug 09) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Saturday (Aug 08) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 3rd Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 12AM (Mon 3rd Aug) | 2.5ft (0.7m) 8s |
| Most Powerful | 9PM (Sun 9th Aug) | 4ft (1.2m) 6s |
Table - best surf conditions forecast for Prainha over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cookin’ for the next couple of weeks.
To be straight with you, it’s a pretty quiet stretch overall. The first real surf worth paddling out for is the Wednesday morning session on the 5th of August, but even that’s small and the conditions are just ordinary. The good news is there’s a nice little window that opens up on Tuesday morning, the 11th of August, that really stands out as the best on offer. That’s the one to circle.
Now, let’s talk about the place. The break is Prainha, an advanced spot that’s very consistent. The water temperature is 66.4°, which is about normal for this time of year, so no need for a thick suit.
The standout session is Tuesday morning, 11th of August. We’ve got a 3.3ft swell coming from the southeast with a long period of 12 seconds. That’s a proper groundswell, and with the wind blowing cross-offshore from the southwest at 9 mph, the surface will be clean. The combined wave energy is moderate at 292. The swell direction is straight out of the southeast, which is the optimum direction for this spot. This is the best combination of size, wind, and direction we’ll see for a while. It’s a solid choice for the experienced surfer, but be aware that crowds are possible here.
The rest of the forecast is pretty forgettable. The week leading up to that is all small waves, weak energy, and mostly poor conditions. After the 11th, the swell drops off again, and the wind turns messy. The 17th of August morning has a little pulse of 3.6ft easterly swell with clean offshore wind from the west at 3 mph, but it’s just ordinary, not a standout.
So, keep your eyes on the 11th. That’s your session.
Short Range ForecastMostly dry. Warm (max 20°C on Tue morning, min 16°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Fri night, min 17°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Sun 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | E 7 | E 8 | E 7 | E 7 | E 7 | SE 12 | SE 12 | SE 12 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | SSE 10 | E 8 | E 8 | E 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 62 | 55 | 38 | 37 | 25 | 24 | 23 | 35 | 37 | 35 | 38 | 42 | 42 | 42 | 41 | 41 | 9 | 44 | 44 | 41 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | off | glassy | on | cross-on | glassy | cross-on | cross-off | glassy | cross-on | cross-on | glassy | on | cross | cross | on | cross-off | cross-off | cross-on | glassy |
High Tide | 5:44PM1.20m | 5:45AM1.21m | 6:29PM1.10m | 6:39AM1.12m | 7:21PM0.99m | 7:46AM1.04m | 8:25PM0.89m | 9:09AM1.00m | 3:15PM0.66m | 9:42PM0.83m | 3:54AM0.57m | 10:59PM0.84m | 12:00PM1.14m | 00:04AM0.91m | ||||||
Low Tide | 10:29PM0.34m | 10:57AM0.17m | 11:05PM0.37m | 11:36AM0.30m | 11:46PM0.41m | 12:22PM0.46m | 00:35AM0.47m | 1:24PM0.63m | 1:45AM0.53m | 5:51AM0.53m | 7:02PM0.49m | 6:42AM0.39m | 7:49PM0.43m | |||||||
 |  | |  |  | | | | | | |  | |  | | | | | | | |
 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — |
 | 5:47 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 16 | 18 | 19 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 21 | 21 | 21 | 23 | 25 | 27 | 17 | 17 | 18 |
Feels °C | 16 | 16 | 18 | 19 | 19 | 21 | 20 | 21 | 20 | 20 | 21 | 21 | 22 | 21 | 23 | 26 | 26 | 15 | 16 | 20 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | E 8 | E 8 | E 8 |
| kJ | 62 | 55 | 38 | 37 | 25 | 24 | 24 | 33 | 37 | 35 | 38 | 42 | 42 | 42 | 41 | 41 | 44 | 44 | 44 | 41 |
Swell 2 Height (m) Direction Period (s) | S 10 | SE 4 | E 11 | SE 12 | ESE 12 | SE 12 | SE 12 | SE 12 | SE 11 | SE 11 | SE 10 | SE 10 | SE 9 | SSE 9 | SE 8 | SE 8 | SE 8 | SE 8 | — | SE 5 |
| kJ | 2 | 5 | 2 | 6 | 13 | 21 | 23 | 35 | 19 | 18 | 16 | 15 | 14 | 8 | 3 | 3 | 3 | 2 | — | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 11 | E 10 | — | S 12 | — | SE 10 | SE 11 | — | — | E 15 | SE 14 | SE 12 | SE 11 | SSE 10 | SSE 10 | — | — | SE 8 |
| kJ | — | — | 4 | 2 | — | 3 | — | 4 | 5 | — | — | 4 | 7 | 6 | 5 | 10 | 9 | — | — | 3 |
Wind waves Height (m) Direction Period (s) | SE 4 | — | — | — | — | — | — | — | — | — | — | — | — | NNE 2 | — | — | — | SSE 4 | SSE 5 | — |
| kJ | 8 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 17 | 26 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 126 | 0 | 11 | 213 | 54 | 11 | 73 | 0 | 0 | 128 | 4 | 0 | 73 | 4 | 11 | 61 | 100 | 126 | 128 | 0 |
Best forecast wave conditions in Santa Catarina - Norte | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
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Information about the Prainha Surf forecast
The above surf forecast table for Prainha provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Prainha can be found by selecting the local surf guide option on the grey menu. Our Prainha surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Prainha) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Prainha may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Prainha is 14 km (9 miles) from Sao Francisco do Sul. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Sao Francisco do Sul. Sao Francisco do Sul has rooms for a wide range of budgets as well as car hire and transport links.
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