Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 2 pm 01 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, 6AM (local time) - 3ft (0.9m), 7s period, E swell with offshore winds.
  • Most powerful swell: Sunday 2 Aug, 6PM (local time) - 3ft (0.9m), 7s period, E swell with 82 kJ wave energy.
  • Next surfable swell (1★+): Sunday 2 Aug, 6AM (local time) - 3ft (0.9m), 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 6AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.1m and 10s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Prainha in the next 16 days are 0.9m 7s and forecast to arrive on Sunday (Aug 02) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 7s period and expected on Sunday (Aug 02) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sun 2nd Aug)3ft (0.9m) 7s
Best Surf 6AM (Sun 2nd Aug)3ft (0.9m) 7s
Most Powerful 6PM (Sun 2nd Aug)3ft (0.9m) 7s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look what’s coming our way for the next couple of weeks.

The forecast starts quiet. For the first nine days, it’s pretty flat or messy. There’s a few tiny waves with poor conditions, not worth getting wet for. So we’re looking at a solid week-plus of very little action, with a big gap of nothing worth recommending until Monday, 10 August and Tuesday, 11 August, when things finally start to show signs of life. The real standout is shaping up for Friday, 14 August.

Most of the run-up has weak, short-period wind swell from the east with combined wave energy often under 100 (we’re talking numbers like 55, 79, 62 – that’s very low energy surf). Winds are mostly onshore or cross, and the waves are small and messy.

Now, for the two days that are the pick of the litter. Monday, 10 August afternoon, Prainha gets a pulse of south-southeast swell pushing 6 ft at 8 seconds. The wind goes light southwesterly cross-offshore, so the ocean cleans right up. Combined energy jumps to 348 (moderate) – finally some push. It’s an exposed spot and the swell direction isn’t ideal for the optimum south, but for this period it’s the best we’ve got. Tuesday, 11 August morning is glassy with southwest wind, same size 6 ft from the south-southeast, energy up to 385. Again, clean conditions. These two sessions are the only real window for a surf. Not huge, but clean and surfable.

Then, the real highlight. Friday, 14 August morning. Prainha is looking at a solid south-southeast groundswell, 6 ft with a very long 14-second period. That’s proper energy. Combined energy hits 1463 (strong). Offshore southwest wind at 12 mph keeps it clean, though that’s a moderate breeze. This is the only session with excellent conditions noted for experienced surfers. This is a proper swell, but that long period can make beach breaks close out or get straight. Prainha is a beach setup, so it might be a bit tricky, but when it’s on, it’ll have some grunt. The water temperature is 66°, which is 1° above the norm – pretty average for this time of year. Crowds are possible here, so get in early.

After that, the surf fades again into smaller, shorter-period leftovers. A bit of swell on 16 August from the east, but period is a poor 5 seconds and the wind is cross-on – not much to write home about.

Overall, the start is dead, the middle gives a couple of clean days, and one morning on 14 August is the real standout. Get on it if you can.

Rusty

Short Range Forecast

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

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 22°C on Fri morning, min 17°C on Wed night). Wind will be generally light.

Sat
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
1
1
0
0
1
0
1
1
0
1
1
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
E
6
0.2
SSE
10
0.9
E
7
0.8
E
7
0.7
E
8
0.7
E
7
0.6
E
7
0.6
E
7
0.6
E
7
0.3
SE
12
0.6
E
7
0.6
E
8
0.6
E
7
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
8
0.2
SSE
9
0.2
SSE
10
0.6
E
7
Wave Graph
Metric surfscale
Energy kJ
47
9
77
60
55
54
38
38
36
23
36
40
39
42
43
42
41
7
10
40
Wind (km/h)
15
NE
10
NW
5
SW
20
S
10
SW
5
WSW
10
NE
10
N
5
NW
10
E
10
SSW
10
SSW
10
SE
0
WNW
5
N
15
NE
15
N
10
NNW
10
NNE
10
NW
Wind State
on
cross-off
off
cross-off
off
off
cross-on
cross-on
glassy
on
cross-off
cross-off
cross-on
glassy
glassy
cross-on
cross-on
cross
cross-on
cross-off
High Tide
5:03PM1.27m
5:00AM1.28m
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
Low Tide
9:56PM0.33m
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
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
rain showers
rain showers
part cloud
clear
clear
clear
clear
clear
<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
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:46
5:47
5:47
5:47
5:49
5:49
5:50
 mm
1
1
Temp °C
18
19
19
19
17
19
18
19
20
19
20
19
19
18
19
19
19
22
27
28
Feels °C
17
18
18
17
17
20
18
19
22
20
20
19
19
20
20
19
19
21
28
27
  • 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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