Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 2 am 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
19.1° C
0.8° 

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


Prainha surf forecast from 2 Aug 2026:

  • Best quality surf: Sunday 2 Aug, 6PM (local time) - 2.5ft (0.8m), 7s period, E swell with cross-offshore winds.
  • Most powerful swell: Saturday 8 Aug, 9PM (local time) - 4ft (1.2m), 7s period, SE swell with 135 kJ wave energy.
  • Next surfable swell (1★+): Sunday 2 Aug, 6PM (local time) - 2.5ft (0.8m), 7s 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 Sunday (Aug 02) at 6PM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.4m and 4s. 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 1.2m 7s and forecast to arrive on Saturday (Aug 08) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 8s period and expected on Saturday (Aug 08) at 9AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Sun 2nd Aug)2.5ft (0.8m) 7s
Best Surf 6PM (Sun 2nd Aug)2.5ft (0.8m) 7s
Most Powerful 9PM (Sat 8th Aug)4ft (1.2m) 7s

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


The Lowdown

Alright, Rusty here. Let's talk about what's coming up for Prainha.

Right now, we're looking at a pretty quiet stretch. The surf over the next few days is small and nothing to get excited about. It's not until the second week of August that things start to build with some real energy. There are gaps where it's essentially flat, especially the first few days, so don't be in a rush to paddle out.

Let's break it down. Starting Sunday the 2nd, we've got knee-to-waist high waves at around 3 ft from the east, but the period is a short 7 seconds. There's just not much push. The water temp is sitting at a pretty typical 66°F, about average for the time of year. The morning offers a cross-off breeze, so it's rideable, but it's ordinary. The afternoon gets messy.

Monday the 3rd is a write-off. The swell drops right off. Tuesday the 4th is even smaller, with a tiny 0.7 ft swell in the morning. It's glassy, but there's nothing to ride. We stay in this rut through the end of the first week. Wednesday, Thursday, Friday... all small, brief windows of clean conditions but the swell is just too weak to bother.

Now, here's where it gets interesting. From Monday the 10th onwards, we start seeing some longer-period energy. Monday afternoon brings a clean, offshore wind and a swell from the southeast with a long 15-second period. The combined energy is moderate at 140. This is a groundswell, and at Prainha, that should wrap in nicely. The waves are still small at 2 ft, but the quality will be there.

Tuesday the 11th morning is similar, with a 14-second period and clean conditions. The energy is moderate (99). The afternoon, however, gets blown out with stronger winds.

Here's the standout. Sunday the 16th into Monday the 17th looks like the best window. Saturday the 15th really starts to build, with morning glass and a 4 ft swell from the east, period 8 seconds. The energy is climbing, hitting 164 in the morning and 186 in the afternoon. That's moderate, bordering on strong.

Sunday the 16th morning offers clean surf with a cross-off breeze. The swell holds at 4 ft from the east, but the period stretches to 9 seconds. The combined energy is a solid 187. The afternoon shows 4 ft waves with 214 energy, but the wind goes cross-shore, so it won't be as clean.

Monday the 17th morning is the real gem. The swell hits 4 ft from the east, 9-second period, with the energy climbing to 214. But the wind is a light cross-on, which isn't ideal. The afternoon sees the swell peak at 4 ft and the energy jumps to 291—that's strong wave energy. But it's onshore wind, so it won't be pretty.

If I had to pick one session, it's Saturday the 15th morning. Glassy conditions, building swell to 4 ft, and that east swell direction is right in Prainha's sweet spot. The water could be a bit warmer than usual by then, but it's just a feeling. That's your best bet. It's still over a week away, so keep an eye on it, but it's looking promising.

For the rest of it, there are a few other clean windows, but the swell is just too small or the wind too messy.

This is Rusty, signing off.

Short Range Forecast

Mostly dry. Warm (max 20°C on Tue morning, min 17°C on Sun night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 26°C on Fri night, min 17°C on Fri night). Winds increasing (calm on Thu night, strong winds from the S by Fri night).

Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
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
1
0
0
0
0
0
1
1
0
1
1
0
0
0
0
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)
0.9
E
7
0.8
E
7
0.7
E
8
0.6
E
7
0.6
E
7
0.2
ESE
12
0.2
ESE
11
0.3
SE
12
0.4
SE
12
0.6
E
7
0.6
E
7
0.6
E
7
0.7
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.2
SSE
8
0.8
NE
5
0.1
SE
8
0.9
SSE
5
0.9
SE
7
Wave Graph
Metric surfscale
Energy kJ
77
62
55
38
35
13
12
23
34
37
36
39
58
42
44
42
7
26
2
40
77
Wind (km/h)
15
SSW
15
SSE
10
SW
5
W
10
NE
10
NNE
5
N
10
NE
5
S
5
S
10
SE
5
SW
5
NNW
10
NE
10
N
5
N
10
E
40
S
15
SW
15
NNE
20
S
Wind State
cross-off
cross
off
glassy
on
cross-on
glassy
on
cross-off
cross-off
cross-on
cross-off
glassy
on
cross
cross
cross-on
cross-off
cross-off
cross-on
cross-off
High Tide
5:44PM1.20m
5:45AM1.21m
6:29PM1.10m
6:39AM1.12m
7:21PM0.99m
7:46AM1.04m
8:25PM0.89m
9:09AM1.00m
3:15PM0.66m
9:42PM0.83m
3:54AM0.57m
10:59PM0.84m
12:00PM1.14m
00:04AM0.91m
Low Tide
10:23AM0.08m
10:29PM0.34m
10:57AM0.17m
11:05PM0.37m
11:36AM0.30m
11:46PM0.41m
12:22PM0.46m
00:35AM0.47m
1:24PM0.63m
1:45AM0.53m
5:51AM0.53m
7:02PM0.49m
6:42AM0.39m
7:49PM0.43m
clear
part cloud
part cloud
cloud
part cloud
part cloud
cloud
part cloud
cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:50
6:50
6:50
6:48
6:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:47
5:47
5:47
5:49
5:49
5:50
5:50
 mm
2
19
Temp °C
18
18
17
19
19
19
20
20
20
18
18
19
19
20
20
23
24
26
18
19
18
Feels °C
17
17
17
19
19
19
21
20
22
19
18
21
21
20
21
22
24
26
19
18
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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