Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 2 am 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
19.8° C
1.5° 

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


Prainha surf forecast from 6 Aug 2026:

  • Best quality surf: Saturday 8 Aug, 6AM (local time) - 2ft (0.6m), 15s period, SE swell with glassy winds.
  • Most powerful swell: Sunday 9 Aug, 3PM (local time) - 3.5ft (1.1m), 12s period, SE swell with 324 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 9AM (local time) - 2ft (0.6m), 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 Thursday (Aug 06) at 9AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.3m and 10s. 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 1.1m 12s and forecast to arrive on Sunday (Aug 09) at 3PM. 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 8s period and expected on Saturday (Aug 08) at 6AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 6th Aug)2ft (0.6m) 8s
Best Surf 6AM (Sat 8th Aug)2ft (0.6m) 15s
Most Powerful 3PM (Sun 9th Aug)3.5ft (1.1m) 12s

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


The Lowdown

Alright, let’s get stuck into it. The next couple of weeks are looking pretty quiet for the most part, so we’ll have to bide our time. There are a few pulses of energy, but we’ve got to be smart about when to paddle out. We're looking at a long dry spell to start, then a couple of windows where it might just come together.

To kick things off, we’re looking at the next few days with pretty small surf. Come Thursday the 6th of August, it’s tiny—around 2ft with an 8-second period and weak energy (64). There’s a bit of offshore wind in the morning, which is nice, and the water is sitting at 68°, a touch warmer than normal for this time of year, but honestly, it’s not worth getting wet for. That kind of small, short-period stuff is messy and weak.

Those weak conditions drag on through Friday and into the weekend. Waves stay below 3ft, energy is weak to moderate at best. Saturday the 8th sees a bit of a longer period start to roll in, but it’s coming from the SE, which is cross to cross-on at Prainha. It’s not going to be any good.

Then it goes pretty flat again. From Sunday the 9th through to Tuesday the 11th, we’ve got a lot of nothing – the swell drops away and it’s just small, weak leftovers. Sunday morning has a bit of period, but it’s cross-shore and blown out. There’s a gap there of a few days where you’d be wasting your time.

We finally get a proper window on Wednesday the 12th of August. The morning stays glassy with light offshore SW winds. The swell only nudges up to 3ft, but the period has stretched out to 12 seconds, and it’s from the SE, which is a better angle. The energy (150) is pushing into moderate territory. It’s surfable. By the afternoon it’s a bit cleaner with an offshore breeze, and the swell bumps to 3ft with a 13-second period and the energy (203) is building. This is the first real sign of life.

Thursday the 13th is a bit of a letdown – it backs off again. It’s clean, but small. The real standout, though, is Friday the 14th of August. We wake up to offshore WSW winds and a clean 2ft SE groundswell with a long 15-second period, and the energy is really starting to move (241). This is the kind of long-period groundswell that Prainha can handle, and with offshore wind, it’s going to have some shape. The afternoon picks up a bit of size to 4ft, but the period drops and the wind swings more SSW and strengthens, making it a bit messier. The morning is your window.

Now, that swell runs out of puff pretty quickly into Sunday the 16th. The morning of the 16th sees a push of 7ft, but it’s short-period E swell (8 seconds) and cross-shore. That’s a step up in size, but it’s going to be a jumbled mess – not a surfer’s friend. There’s too much short-period energy to be good. The swell stays overhead for a couple of days, into the 17th and 18th, but it’s all east windswell, cross-on and choppy. Not good.

We see the last little flutter of hope midweek. On Wednesday the 19th, it’s glassy again in the morning with a clean 3ft E swell, but the period is a short 9 seconds. It’s surfable but not special. After that, it just kind of fades out and gets messy again through the end of the forecast period.

So, to be honest, if I were you, I’d be circling Friday morning on the 14th of August. That’s the standout – clean, offshore, and with that long-period groundswell pushing through. The weekday morning on the 12th could be a fun little pre-game, but Friday is the one. Everything else is either too small or too messy. It’s a long wait for the good stuff, so keep the board waxed and be ready to go when the windows open.

Rusty.

Short Range Forecast

Heavy rain (total 21mm), heaviest during Fri afternoon. Warm (max 23°C on Thu afternoon, min 16°C on Fri afternoon). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 18mm), heaviest on Tue night. Very mild (max 16°C on Sun morning, min 11°C on Mon afternoon). Wind will be generally light.

Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
1
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
2
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
E
8
0.6
E
8
0.6
E
8
0.7
E
8
0.7
E
8
0.6
E
7
0.5
SE
14
0.4
SE
16
0.5
SE
14
0.4
SE
13
1.1
SE
12
0.5
SE
11
1.1
SE
5
0.5
SE
13
0.4
SE
13
0.5
SE
12
0.4
SE
11
0.4
SE
12
0.7
SE
12
0.8
SE
13
0.6
SE
12
Wave Graph
Metric surfscale
Energy kJ
40
41
43
58
57
40
103
87
91
61
324
59
66
84
55
74
32
50
146
199
126
Wind (km/h)
5
WNW
10
NNE
15
N
10
W
10
SE
15
SE
10
N
15
NNE
5
W
25
SSE
25
SE
25
SSE
20
S
20
S
25
S
20
S
15
S
5
SSW
5
SW
10
SW
10
WSW
Wind State
cross-off
cross-on
cross
cross-off
cross
cross
cross-on
cross-on
off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
off
off
High Tide
9:09AM1.00m
3:15PM0.66m
9:42PM0.83m
3:54AM0.57m
10:59PM0.84m
12:00PM1.14m
00:04AM0.91m
1:02PM1.25m
00:55AM1.01m
1:50PM1.33m
1:38AM1.12m
2:31PM1.37m
2:16AM1.22m
3:08PM1.36m
2:52AM1.29m
Low Tide
1:24PM0.63m
1:45AM0.53m
5:51AM0.53m
7:02PM0.49m
6:42AM0.39m
7:49PM0.43m
7:22AM0.26m
8:27PM0.42m
7:54AM0.15m
8:56PM0.43m
8:20AM0.06m
9:12PM0.47m
8:37AM0.01m
8:59PM0.49m
rain showers
thunderstorm
part cloud
light rain
mod rain
light rain
light rain
clear
rain showers
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
mod rain
heavy rain
mod rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:48
6:48
6:48
6:47
6:46
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:50
5:50
5:51
5:51
5:52
5:52
 mm
3
1
2
7
1
1
6
2
2
3
1
1
9
13
7
1
Temp °C
20
23
22
21
19
16
17
18
18
16
15
15
13
13
14
14
15
14
13
13
14
Feels °C
21
22
21
22
20
13
17
17
20
13
11
12
9
9
9
9
12
13
13
12
14
  • 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