Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 8 am 14 Jul 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
17.5° C
1.0° 

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


Prainha surf forecast from 14 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 12AM (local time) - 3.5ft (1.0m), 10s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 15 Jul, 6PM (local time) - 3.5ft (1.1m), 10s period, ESE swell with 255 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 15 Jul, 12AM (local time) - 3.5ft (1.0m), 10s period with ESE 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 Wednesday (Jul 15) at 12AM. The primary swell is predicted to be 1.0m and 10s period. 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 10s and forecast to arrive on Wednesday (Jul 15) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 9s period and expected on Saturday (Jul 18) at 6PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Wed 15th Jul)3.5ft (1.0m) 10s
Best Surf12AM (Wed 15th Jul)3.5ft (1.0m) 10s
Most Powerful 6PM (Wed 15th Jul)3.5ft (1.1m) 10s

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


The Lowdown

Alright, Rusty here. Let’s break down what’s happening at Prainha.

Right now, it’s a slow start, but things get moving. The water is at 64°F, which is a bit cooler than usual for this time of year—nothing wild, but you’ll want a thick wetsuit.

The first real surf kicks off Tuesday morning, 14 July. Prainha is showing a clean 3ft swell from the SE with a 10-second period, and moderate energy running at 200. The wind is light and cross-off from the SSW at 3 mph, so the face will be clean. This is a good window for advanced surfers only. It’s an exposed spot, so it catches whatever’s out there, but the direction isn’t a perfect match for its optimum S swell, so expect a bit of a wrap. The crowd can show up sometimes, but it’s not a circus.

Wednesday morning, 15 July, is the real standout. The swell nudges up to 4ft from the ESE, still 10 seconds, and the energy is a bit stronger at 223. The wind goes glassy—NNW at 3 mph. That’s as clean as it gets. The waves will be smooth and lined up. This is the best session early on.

Thursday morning, 16 July, keeps the run going with another glassy morning, this time from the W at 3 mph. The swell holds at 3ft from the E, period of 10 seconds, energy at 212. Clean and fun.

Friday morning, 17 July, the swell period drops to 8 seconds, which is a bit shorter and weaker, but the swell is still 3ft to 3ft. The wind is glassy again from the W at 3 mph. The conditions are clean, but the waves will be more ordinary—still surfable, just not as good.

The weekend and the start of the following week get a bit messy. Saturday and Sunday mornings have glassy wind, but the swell is weak and short-period, with energy dropping. Sunday afternoon (19 July) and Monday afternoon (20 July) have no recorded swell. It’s a lull.

Then, on Sunday morning, 26 July, the swell starts to build—5ft from the SE at 10 seconds, and the energy is big at 406. The wind is light and cross from the NNW, so there’s some texture but it’s still rideable. The real standout is the following Monday morning, 27 July. That’s the one to watch. Swell holds at 4ft, but the period stretches to 14 seconds—proper groundswell—and the energy is massive at 525. The wind is glassy from the NNW. This is a long-period swell, and at a beach break, it might break a bit straight, but for a clean, powerful wave, it’s the best of the whole outlook. Keep in mind, this is more than a week away, so it’s promising but not a sure thing.

After that, Tuesday and Wednesday (28–29 July) have some cross-shore breeze and a bit of rain, but the swell is still 4ft to 4ft with long periods (13–14 seconds). The energy is still high (452–542), but the wind is not as clean.

Overall, the best two windows are Wednesday morning, 15 July, for the glassy, clean conditions, and Monday morning, 27 July, for the big, long-period groundswell with glassy wind. Don’t miss those.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Wed morning, min 13°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Sat afternoon, min 16°C on Fri morning). Wind will be generally light.

Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
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
1
2
2
0
1
2
0
0
1
0
0
0
0
1
1
0
0
1
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)
1
SE
10
1
SE
10
1
ESE
10
1.1
ESE
10
1
ESE
10
1
E
10
1
E
10
0.9
ESE
10
0.6
ESE
10
0.9
E
8
1
E
8
0.3
ESE
10
1.1
E
8
1.1
E
9
1.2
E
9
1
E
8
1
E
8
1
E
8
0.9
E
8
1.3
ENE
8
0.1
S
11
Wave Graph
Metric surfscale
Energy kJ
200
200
204
223
214
204
212
173
72
99
133
20
161
181
225
130
0
0
113
0
2
Wind (km/h)
5
SSW
10
ESE
5
NW
5
NNW
15
NE
5
NNW
5
W
10
NE
5
NNW
5
W
10
NE
10
NNW
5
NNW
15
NE
10
NNW
0
WSW
10
NE
10
N
0
SW
10
SSE
0
SW
Wind State
cross-off
cross-on
cross-off
glassy
cross-on
cross
glassy
on
cross
glassy
cross-on
cross
cross
cross-on
cross
glassy
cross-on
cross-on
glassy
cross
glassy
High Tide
3:30PM1.36m
3:13AM1.15m
4:11PM1.31m
3:50AM1.19m
4:49PM1.23m
4:28AM1.21m
5:26PM1.15m
5:07AM1.19m
6:03PM1.07m
5:50AM1.14m
6:40PM1.00m
6:40AM1.07m
7:21PM0.93m
Low Tide
9:39PM0.56m
8:57AM0.04m
9:10PM0.57m
9:25AM0.05m
9:24PM0.54m
9:56AM0.09m
9:50PM0.50m
10:28AM0.16m
10:24PM0.46m
11:02AM0.25m
11:02PM0.44m
11:39AM0.36m
11:46PM0.44m
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:00
7:00
7:00
6:58
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:38
5:38
5:39
5:39
5:40
5:40
 mm
Temp °C
15
16
16
17
17
16
16
16
17
17
20
20
21
24
23
21
24
22
24
23
19
Feels °C
14
16
16
16
16
16
16
15
16
16
20
19
19
21
21
20
23
20
23
22
20
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 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.

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