Surf Forecasts:
Prainha surf forecast from 13 Aug 2026:
- Best quality surf: Saturday 15 Aug, 12AM (local time) - 5ft (1.5m), 13s period, SSE swell with glassy winds.
- Most powerful swell: Friday 14 Aug, 6PM (local time) - 8ft (2.4m), 13s period, SE swell with 1,982 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 9PM (local time) - 5ft (1.6m), 13s period with SSE 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 Thursday (Aug 13) at 9PM. The primary swell is predicted to be 1.6m and 13s period with a secondary swell of 0.4m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 2.4m 13s and forecast to arrive on Friday (Aug 14) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Aug 20) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 13th Aug) | 5ft (1.6m) 13s |
| Best Surf | 12AM (Sat 15th Aug) | 5ft (1.5m) 13s |
| Most Powerful | 6PM (Fri 14th Aug) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Prainha over the next 16 days.
The Lowdown
Alright, let’s break this down for Prainha. The water’s sitting right at 66°F, which is standard for this time of year, nothing weird going on.
We’ve got a slow start, but the first real window fires up Thursday morning the 13th. Glassy flat water, a 6ft swell out of the SSE, and a long 14-second period. That’s proper groundswell, and the combined energy reading is 1124, so there’s plenty of power behind it. The reef will handle these long lines well. It’s an inconsistent spot, but it’s rated for intermediates, so you’ll have to be patient for the sets. Thursday afternoon goes lumpy with a cross-shore breeze, so hit the early session.
Friday the 14th keeps the good run going. Morning and afternoon are both glassy with a solid 6ft SSE swell, period at 13 seconds. The afternoon kicks out a combined energy of 1218, which is the biggest number we’ll see. That’s your best clean session of the first week.
Then it goes south. From Saturday the 15th through Thursday the 20th, the wind turns onshore or cross-onshore, the period drops to 7-8 seconds, and the swell direction switches to a short-period E/ENE. It’s all poor to marginal. Sunday the 16th sees a 6ft E swell, but with only 8 seconds and onshore wind, the energy reading falls under 700. Not worth it. That’s a solid six-day stretch of nothing.
Tuesday the 18th afternoon offers a tiny hope. A 7ft S swell with a clean cross-offshore wind, but the period is a short 6 seconds, so it’ll be a bumpy, weak wave. Not really a standout.
Here’s the real gem: Wednesday the 26th afternoon. Glassy offshore wind from the SSW, a clean 6ft SSE swell, a period of 11 seconds, and a combined energy reading of 1303. That’s powerful groundswell. The sets will be widely spaced but when they hit the reef, they’ll be perfect. If you’re an experienced surfer, this is the one to save the date for. The morning of the 26th is glassy too, but the afternoon is the winner.
The very end on Friday the 28th morning has glassy conditions and a 4ft SSE swell, but the energy is dropping off. It’s a fun little session, but nothing compared to the 26th.
Don’t bother with the mid-period slop. Thursday the 13th morning, Friday the 14th, and that Wednesday the 26th afternoon are your real shots. Plan for those.
- Rusty
Short Range ForecastHeavy rain (total 74mm), heaviest during Fri night. Very mild (max 19°C on Sat night, min 17°C on Thu afternoon). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Wed morning, min 18°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
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) | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 994 | 903 | 484 | 1042 | 745 | 444 | 459 | 371 | 470 | 497 | 521 | 510 | 579 | 525 | 482 | 443 | 426 | 277 | 237 | 183 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross | glassy | glassy | on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | glassy | cross | cross-off |
High Tide | 3:05PM0.91m | 2:29AM0.95m | 3:27PM0.86m | 3:02AM0.96m | 3:48PM0.82m | 3:36AM0.94m | 4:10PM0.78m | 4:12AM0.89m | 4:31PM0.74m | 4:50AM0.80m | 4:51PM0.70m | 5:35AM0.71m | 5:10PM0.65m | |||||||
Low Tide | 9:27PM0.41m | 9:34AM0.02m | 9:24PM0.40m | 9:52AM0.11m | 9:06PM0.36m | 9:57AM0.20m | 9:14PM0.31m | 9:57AM0.29m | 9:38PM0.28m | 10:05AM0.37m | 10:09PM0.28m | 10:17AM0.45m | 10:46PM0.32m | |||||||
 |  |  |  |  | | | |  | |  |  | |  |  | |  | | | | |
 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — |
 | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — |
mm | 3 | 5 | 5 | 17 | 35 | 3 | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 20 | 21 | 18 | 24 | 26 | 24 | 27 | 25 | 20 |
Feels °C | 18 | 19 | 17 | 17 | 19 | 20 | 18 | 19 | 20 | 21 | 20 | 20 | 21 | 19 | 25 | 27 | 26 | 28 | 26 | 20 |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 13 | SE 8 | SSE 13 | ESE 8 | E 8 | E 8 | SSE 11 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 994 | 903 | 434 | 1042 | 389 | 403 | 459 | 170 | 470 | 497 | 521 | 510 | 579 | 525 | 482 | 443 | 426 | 277 | 237 | 183 |
Swell 2 Height (m) Direction Period (s) | NE 5 | NE 5 | SSE 13 | — | SSE 13 | SSE 12 | SSE 11 | E 14 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | S 8 | S 9 | S 8 |
| kJ | 14 | 7 | 484 | — | 745 | 444 | 280 | 15 | 128 | 94 | 58 | 38 | 19 | 19 | 9 | 9 | 7 | 6 | 1 | 5 |
Swell 3 Height (m) Direction Period (s) | — | E 8 | NE 6 | — | — | E 16 | E 15 | — | E 13 | — | — | — | — | — | SE 8 | — | — | SE 12 | SE 13 | SE 13 |
| kJ | — | 1 | 9 | — | — | 5 | 5 | — | 14 | — | — | — | — | — | 3 | — | — | 6 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | SSE 3 | S 4 | — | ESE 7 | — | — | — | E 8 | NE 7 | — | — | — | — | NNW 3 | N 3 | — | N 4 | — | — | N 3 |
| kJ | 3 | 7 | — | 217 | — | — | — | 371 | 121 | — | — | — | — | 3 | 5 | — | 9 | — | — | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 9 | 0 | 0 | 36 | 20 | 11 | 11 | 199 | 20 | 31 | 20 | 20 | 38 | 12 | 0 | 10 | 10 |
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 17 km (11 miles) from the city of Tijucas. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Tijucas. Tijucas has rooms for a wide range of budgets as well as car hire and transport links.
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