Surf Forecasts:
Prainha surf forecast from 20 Aug 2026:
- Best quality surf: Saturday 22 Aug, 12AM (local time) - 8ft (2.4m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 12PM (local time) - 8ft (2.4m), 16s period, SSE swell with 2,696 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 12AM (local time) - 3ft (0.9m), 7s period with ENE 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 Friday (Aug 21) at 12AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.4m and 3s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 2.4m 16s and forecast to arrive on Monday (Aug 24) at 12PM. 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 Friday (Aug 21) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 21st Aug) | 3ft (0.9m) 7s |
| Best Surf | 12AM (Sat 22nd Aug) | 8ft (2.4m) 10s |
| Most Powerful | 12PM (Mon 24th Aug) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for Prainha over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s on the cards for the next couple of weeks.
Right now, it’s a slow start. The first real surf worth paddling out for doesn’t arrive until the morning of Saturday, 22 August. Before that, things are pretty flat or just messy.
The standout of the whole run is clearly Monday morning, 24 August. That’s when we see some serious energy. Prainha will be pulling in a solid 8ft swell from the SSE, with a very long period of 14 seconds. The combined swell energy is a powerful 1963, which means there’s a lot of water moving. That’s big, clean surf with light offshore wind. This is one for the experienced crew only – over 8ft is expert territory, but at 8ft, it’s still pushing the limits for intermediates. The long period will make for excellent shape on this exposed spot, but expect it to be a bit paddle-intensive getting out. Crowds are possible here.
Leading up to that, Saturday the 22nd morning is a nice warm-up. You’ve got 6ft swell from the south with a 10-second period, decent cross-off wind from the SSE, and a clean lineup. The energy is a solid 745 (moderate-to-strong). It’s a good solid session for intermediates looking to get some juice.
Sunday the 23rd morning stays clean with glassy conditions and a 4ft swell from the SSE, period at a nice 11 seconds. It’s a step down in size but the wind is perfect. The water temp is 68°F, which is a touch warmer than normal for this time of year – a nice little bonus.
Monday morning (24th) is the big one as I said, but by Tuesday the 25th morning, we’re back to a more manageable 6ft from the SSE, with glassy, calm wind. Still very clean and fun, with good energy. The rest of that week holds mostly clean, small-ish waves in the 4ft to 5ft range, with light winds, but the quality is a bit more mixed.
We then hit a drier stretch. The end of August and start of September sees smaller swells and more onshore or cross-on conditions. Nothing to write home about. There’s a blip on Wednesday morning, 3 September, with a 5ft swell from the NE and clean cross-off wind, showing some promise, but it’s a week and a half out, so keep an eye on it.
Overall, the window is Saturday 22 August through to around Wednesday 26 August. The rest of the outlook is quiet or messy. Don’t sleep on that Monday morning session if you’ve got the skills.
- Rusty
Short Range ForecastMostly dry. Warm (max 22°C on Thu afternoon, min 12°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Tue afternoon, min 11°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
AM | 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 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | S 10 | S 10 | S 9 | S 10 | S 10 | SSE 13 | SSE 14 | SSE 13 | SSE 15 | SSE 14 | SSE 13 | SSE 13 | SSE 12 | SE 16 | SSE 14 | SE 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 111 | 91 | 84 | 49 | 69 | 1079 | 770 | 516 | 414 | 416 | 774 | 2078 | 1605 | 2169 | 1433 | 998 | 852 | 656 | 557 | 1244 | 907 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross | glassy | glassy | cross | cross-off | cross-off | cross | off | glassy | cross-on | glassy | off | off | glassy |
High Tide | 2:35PM0.59m | 12:51PM0.64m | 12:32PM0.72m | 11:12PM0.57m | 12:44PM0.79m | 11:57PM0.66m | 1:05PM0.86m | 00:29AM0.76m | 1:29PM0.91m | 00:58AM0.85m | 1:52PM0.95m | 1:26AM0.92m | |||||||||
Low Tide | 10:20AM0.53m | 3:15PM0.59m | 11:46PM0.38m | 4:39AM0.33m | 6:36PM0.46m | 5:41AM0.24m | 6:52PM0.40m | 6:24AM0.16m | 7:13PM0.35m | 6:59AM0.08m | 7:35PM0.31m | 7:32AM0.02m | 7:59PM0.29m | ||||||||
 | |  |  | |  |  | | | | | | | | | | |  |  | | | |
 | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — |
 | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | — |
Temp °C | 21 | 22 | 22 | 21 | 19 | 15 | 14 | 14 | 12 | 15 | 15 | 13 | 15 | 14 | 13 | 15 | 16 | 15 | 16 | 17 | 18 |
Feels °C | 22 | 22 | 23 | 20 | 16 | 13 | 12 | 11 | 10 | 13 | 12 | 9 | 12 | 11 | 11 | 14 | 14 | 15 | 16 | 18 | 20 |
Swell 1 Height (m) Direction Period (s) | E 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | S 9 | S 10 | S 10 | SSE 13 | SSE 14 | SSE 13 | SSE 15 | SSE 14 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 14 | SE 14 |
| kJ | 111 | 91 | 84 | 49 | 67 | 83 | 78 | 516 | 414 | 416 | 774 | 2078 | 1605 | 2169 | 1433 | 998 | 852 | 656 | 557 | 1244 | 907 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 9 | S 8 | S 8 | S 7 | — | — | ENE 9 | ENE 8 | NE 8 | ENE 8 | ENE 7 | SE 16 | ENE 7 | NE 7 | — | — | SE 16 | SE 16 | SSE 15 | — |
| kJ | 30 | 58 | 22 | 20 | 69 | — | — | 65 | 39 | 15 | 11 | 5 | 776 | 5 | 2 | — | — | 257 | 553 | 656 | — |
Swell 3 Height (m) Direction Period (s) | S 7 | SE 12 | SE 6 | SSE 4 | WNW 3 | — | — | — | — | — | — | — | ENE 7 | — | — | — | — | — | E 8 | — | — |
| kJ | 8 | 6 | 1 | 4 | 1 | — | — | — | — | — | — | — | 5 | — | — | — | — | — | 1 | — | — |
Wind waves Height (m) Direction Period (s) | — | NNE 2 | NW 3 | W 4 | — | S 10 | S 10 | — | — | — | — | — | — | — | — | — | — | ENE 4 | ENE 5 | ENE 5 | NE 6 |
| kJ | — | 1 | 2 | 19 | — | 1079 | 770 | — | — | — | — | — | — | — | — | — | — | 7 | 31 | 47 | 152 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 110 | 0 | 28 | 11 | 0 | 0 | 9 | 0 | 0 | 56 | 0 | 0 | 9 | 0 | 0 | 20 | 0 | 0 | 0 | 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 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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