Surf Forecasts:
Prainha surf forecast from 3 Sep 2026:
- Best quality surf: Monday 7 Sep, 9AM (local time) - 5.5ft (1.7m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 3AM (local time) - 7.5ft (2.3m), 9s period, SSE swell with 826 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 3AM (local time) - 2ft (0.6m), 11s period with SE 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 (Sep 04) at 3AM. The primary swell is predicted to be 0.6m and 11s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 2.3m 9s and forecast to arrive on Monday (Sep 07) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 7s period and expected on Wednesday (Sep 09) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Fri 4th Sep) | 2ft (0.6m) 11s |
| Best Surf | 9AM (Mon 7th Sep) | 5.5ft (1.7m) 9s |
| Most Powerful | 3AM (Mon 7th Sep) | 7.5ft (2.3m) 9s |
Table - best surf conditions forecast for Prainha over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's cut to the chase about this stretch of coast. It's not looking like a classic run of waves for the next couple of weeks.
Water's sitting at about 69°, which is a touch warmer than normal, so you might get away with a thinner suit.
The first few days are a total washout. Thursday the 3rd is poor, Friday the 4th and Saturday the 5th are all junk. We've got weak little windswells and cross-shore breezes messing everything up. You're looking at knee-high slop with a chop on it. Not worth getting damp for.
The gap with nothing on offer runs for a solid stretch. Sunday the 6th is only barely surfable, and even then it's very ordinary. Monday the 7th has a pulse of energy in the afternoon, with the swell jumping to 6ft from the SE, but it's still only marginal due to tide. Tuesday the 8th has a clean morning but the swell is tiny.
We keep waiting for that window. There's some more energy around Wednesday the 9th and Thursday the 10th, but the wind is onshore and the waves are going to be a mess. It’s not until we get to Friday the 11th that things finally look like they might come together. Morning is, get this, completely glassy. No wind at all. The swell is a clean 4ft from the E at a 9-second period. For this stretch, that’s the standout of the whole period. Prainha is an exposed spot, and with that clean surface and rideable size, it could finally turn on. This is your best bet, but it's far from perfect.
After that, we’re back to the grind. The weekend of the 12th and 13th gets chopped up again from onshore winds, and the days after that are mostly poor, with some clean days but no size. There’s a bit of swell on the 18th, but the period is short at 6 seconds, making it weak and crumbly.
Honestly, for a surfing outlook, this is a tough one. If you’re not keen on chasing that one glassy morning on Friday the 11th, you might want to find something else to do for a couple of weeks. It’s a long stretch of poor to ordinary, which is a bit more normal for this area when the trade winds get messy. The forecasts can always change, but right now, I'm not holding my breath.
Rusty, out.
Short Range ForecastHeavy rain (total 30mm), heaviest during Sat night. Very mild (max 19°C on Thu afternoon, min 15°C on Sat night). Winds increasing (light winds from the WSW on Thu night, fresh winds from the SSE by Sat night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Mon night. Very mild (max 18°C on Tue afternoon, min 12°C on Mon morning). Winds decreasing (fresh winds from the SSE on Sun night, calm by Tue morning). | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
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) | SE 11 | SE 11 | SE 11 | SE 11 | E 8 | E 8 | E 8 | E 8 | SE 5 | E 8 | SE 6 | SE 10 | SSE 9 | SE 8 | ESE 7 | E 6 | E 6 | E 6 | E 7 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 242 | 182 | 126 | 58 | 42 | 88 | 86 | 68 | 67 | 28 | 46 | 334 | 416 | 459 | 114 | 91 | 74 | 156 | 183 | 167 | 160 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross | off | off | cross-on | glassy | off | cross-on | cross |
High Tide | 2:49PM0.76m | 7:45PM0.77m | 3:40AM0.65m | 2:40PM0.82m | 9:15PM0.73m | 3:19AM0.57m | 10:43PM0.79m | 12:01PM1.13m | 11:48PM0.92m | 12:52PM1.24m | 00:36AM1.07m | 1:31PM1.32m | 1:16AM1.21m | 2:05PM1.35m | 1:52AM1.32m | ||||||
Low Tide | 11:36AM0.57m | 5:15PM0.69m | 11:50PM0.40m | 4:45AM0.64m | 12:24PM0.76m | 6:21PM0.59m | 5:52AM0.48m | 7:03PM0.50m | 6:36AM0.32m | 7:37PM0.45m | 7:12AM0.19m | 8:04PM0.43m | 7:41AM0.09m | 8:23PM0.43m | 8:02AM0.03m | 8:27PM0.42m | |||||
 | |  |  |  |  |  |  |  | | |  | | | |  | | | | | | |
 | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — |
mm | — | — | — | — | — | 5 | 4 | 8 | 13 | — | — | 1 | — | — | 4 | 1 | — | 1 | — | — | 5 |
Temp °C | 18 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 16 | 15 | 14 | 15 | 15 | 17 | 18 | 17 | 17 | 18 | 19 |
Feels °C | 17 | 18 | 18 | 16 | 17 | 15 | 16 | 13 | 11 | 11 | 12 | 9 | 12 | 13 | 13 | 17 | 16 | 16 | 19 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 11 | SE 11 | SE 11 | ENE 6 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | SE 6 | SE 7 | ESE 7 | ESE 6 | E 6 | E 6 | E 7 | E 8 | E 8 |
| kJ | 242 | 182 | 126 | 25 | 42 | 88 | 86 | 68 | 32 | 28 | 31 | 12 | 38 | 116 | 114 | 70 | 47 | 78 | 183 | 167 | 160 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | ENE 5 | SE 11 | SE 11 | SE 11 | SE 5 | SE 10 | SSE 10 | E 9 | SE 11 | — | SE 9 | — | SE 9 | SE 10 | SE 10 | SE 10 | SE 9 | SSE 9 | SE 10 |
| kJ | 23 | 13 | 13 | 58 | 40 | 29 | 6 | 16 | 9 | 7 | 4 | — | 22 | — | 41 | 33 | 24 | 15 | 13 | 8 | 15 |
Swell 3 Height (m) Direction Period (s) | NE 4 | — | E 8 | E 8 | — | — | SE 10 | — | — | SE 10 | — | — | E 8 | — | — | — | SE 12 | — | S 15 | ESE 11 | — |
| kJ | 5 | — | 12 | 12 | — | — | 16 | — | — | 4 | — | — | 11 | — | — | — | 6 | — | 4 | 12 | — |
Wind waves Height (m) Direction Period (s) | NNE 4 | NE 4 | NE 5 | SSE 2 | SE 5 | SSE 5 | — | SSE 4 | SE 5 | SSE 5 | SE 6 | SE 10 | SSE 9 | SE 8 | — | E 6 | E 6 | E 6 | — | — | — |
| kJ | 12 | 9 | 35 | 1 | 19 | 17 | — | 17 | 67 | 25 | 46 | 334 | 416 | 459 | — | 91 | 74 | 156 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 73 | 4 | 61 | 222 | 61 | 0 | 129 | 129 | 126 | 133 | 62 | 0 | 80 | 0 | 0 | 73 | 0 | 0 | 54 | 4 |
Best forecast wave conditions in Santa Catarina - Norte | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Prainha surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest