Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 8 am 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
19.7°C
1.1° 

Prainha surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Prainha surf forecast from 26 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 3AM (local time) - 3.5ft (1.0m), 15s period, SE swell with glassy winds.
  • Most powerful swell: Thursday 27 Aug, 12AM (local time) - 3.5ft (1.0m), 15s period, SE swell with 438 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 3AM (local time) - 3.5ft (1.0m), 15s 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 Thursday (Aug 27) at 3AM. The primary swell is predicted to be 1.0m and 15s period with a secondary swell of 0.6m and 5s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Prainha in the next 16 days are 1.0m 15s and forecast to arrive on Thursday (Aug 27) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Friday (Aug 28) at 9PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 27th Aug)3.5ft (1.0m) 15s
Best Surf 3AM (Thu 27th Aug)3.5ft (1.0m) 15s
Most Powerful12AM (Thu 27th Aug)3.5ft (1.0m) 15s

Table - best surf conditions forecast for Prainha over the next 16 days.


The Lowdown

Alright, folks, Rusty here. Let’s talk about what’s cookin’ for the next couple of weeks. It’s a bit of a slow burn, so don’t go gettin’ your hopes up for a classic right away.

The first real chance to get wet is coming up on Wednesday, the 26th of August. We’ve got a little pulse of south-east swell rolling into Prainha, a spot that can handle it. It’s an advanced wave, so this ain’t a learner’s zone. The early session is where it’s at: Wednesday morning is looking clean with a light offshore wind swinging out of the west at just 3 mph. Swell is small, around 3 ft from the SE, but it’s got a long period of 16 seconds—that’s proper groundswell energy, and it’ll wrap in nicely. The water is sitting at 68°, which is a touch warmer than normal for this time of year, so the rubber might be a bit more comfortable.

The wave energy at that time is moderate, clocking in at 348. It’s not gonna blow your socks off, but it’s clean and the conditions are right. Expect some crowd factor, though—this spot gets surfed on a regular basis, so you might be sharing the takeoff zone.

The afternoon on Wednesday turns ugly quick with an onshore breeze, so call it a half-day and get it in the morning.

Thursday the 27th offers another chance. Morning again is the window: glassy conditions thanks to a NNW breeze at only 3 mph. The swell drops a touch to 2 ft, still SE, period dropping to 14 seconds. Combined energy at 325—still moderate. Another clean, workable session for those who know the break, but nothing to get frantic about.

Friday the 28th through the weekend sees a shift. The swell direction goes east and the period drops to a short 8 seconds. This is weaker, choppier stuff. Morning glass-off windows exist, but the wave quality is ordinary. It’s not going to offer much more than a knee-high drift.

We hit a real dry spell from the 29th of August all the way through to around the 3rd and 4th of September. There’s a big gap of almost a week where the surf is either too small, too messy, or blown out. There’s a couple of marginal windows with clean winds, but the swell is tiny—2 ft, 1 ft. Pointless unless you’re desperate.

Now, the one true standout in this whole forecast is Wednesday, the 8th of September morning. After a long wait, we get a proper pulse again. The swell bumps up to 4 ft from the east, with a period of 8 seconds. It’s not groundswell, but the combined energy jumps to 239—moderate—and the wind is offshore from the southwest at 6 mph. Clean conditions, solid surf for the advanced crew. This is the morning to circle on your calendar.

The next morning, the 9th, is already blown out with onshore winds, so it’s a one-morning wonder.

Finally, on Thursday the 10th of September, we get a double-glass day. Morning has 3 ft east swell with glassy conditions and combined energy at 302. The afternoon gets interesting: the swell drops to 2 ft, but it switches to a long-period ESE swell at 15 seconds—proper groundswell. Energy is at 239, and it’s dead glass. For a small-wave specialist, that afternoon session could be a quiet, clean surprise.

The last week of the forecast, from the 4th onward, is mostly a write-off except for those two mornings. A lot of weak, short-period east swell with choppy side-shore winds. For the advanced crew at Prainha, the 8th of September morning is the best bet in the whole 16 days.

Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 21°C on Fri night, min 16°C on Wed morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 24mm), heaviest during Mon night. Warm (max 22°C on Sat morning, min 18°C on Sat night). Wind will be generally light.

Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
1
1
0
0
1
0
0
1
0
0
0
1
0
1
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SE
16
1
SE
15
1
SE
15
0.8
SE
14
0.7
SE
14
0.6
SE
13
1.1
E
8
1.1
E
8
1.2
E
8
1.1
E
8
1.2
E
8
1
E
9
0.9
E
8
0.9
E
9
1
E
9
0.9
E
9
0.8
E
9
0.7
E
9
0.8
E
9
0.8
E
9
1.4
SE
8
Wave Graph
Metric surfscale
Energy kJ
348
421
438
293
179
106
135
149
186
149
191
145
112
117
160
126
95
73
106
110
266
Wind (km/h)
5
W
15
NE
5
N
5
NNW
15
ENE
15
NNE
10
WNW
15
NE
10
NNE
5
NNE
15
SSE
15
S
5
SE
10
S
10
N
10
SW
5
ENE
10
NNE
20
SSE
25
SE
30
SSE
Wind State
glassy
on
cross-on
cross
on
cross-on
cross-off
cross-on
cross-on
glassy
cross
cross-off
cross
cross-off
cross
cross-off
glassy
cross-on
cross
cross
cross
High Tide
2:15PM1.34m
2:09AM1.33m
2:48PM1.38m
2:43AM1.39m
3:22PM1.39m
3:19AM1.41m
3:55PM1.35m
3:56AM1.39m
4:30PM1.28m
4:35AM1.33m
5:07PM1.17m
5:20AM1.23m
5:47PM1.03m
Low Tide
8:20PM0.34m
8:21AM0.00m
8:29PM0.31m
8:40AM-0.03m
8:43PM0.27m
9:01AM-0.02m
9:03PM0.24m
9:26AM0.02m
9:28PM0.22m
9:54AM0.11m
9:57PM0.22m
10:24AM0.23m
10:29PM0.25m
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
cloud
cloud
part cloud
cloud
light rain
cloud
heavy rain
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:31
6:30
6:28
6:28
6:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:58
5:59
5:59
6:00
6:00
6:00
6:00
 mm
2
22
Temp °C
18
19
19
20
20
20
20
20
21
22
20
19
19
20
19
20
20
19
19
18
17
Feels °C
18
19
20
21
20
21
20
20
21
23
19
17
21
21
22
21
23
21
18
15
11
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Prainha:

join our community of surf reporters

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 locationNearest