Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 2 pm 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
20.1°C
1.2° 

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


Prainha surf forecast from 8 Sep 2026:

  • Best quality surf: Tuesday 15 Sep, 12AM (local time) - 3.5ft (1.0m), 9s period, SE swell with offshore winds.
  • Most powerful swell: Sunday 13 Sep, 9PM (local time) - 5.5ft (1.7m), 10s period, SE swell with 592 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 12AM (local time) - 2.5ft (0.8m), 6s 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 Wednesday (Sep 09) at 12AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.4m 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 1.7m 10s and forecast to arrive on Sunday (Sep 13) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 7s period and expected on Monday (Sep 14) at 9AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Wed 9th Sep)2.5ft (0.8m) 6s
Best Surf12AM (Tue 15th Sep)3.5ft (1.0m) 9s
Most Powerful 9PM (Sun 13th Sep)5.5ft (1.7m) 10s

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


The Lowdown

Alright, let’s get into it. It’s been a bit of a flat, messy run at Prainha, but there are a few windows where you might just score. Let’s break it down day by day.

The overall picture for the next couple of weeks is pretty average. Lots of poor surf conditions and cross-shore junk, but it’s not completely dead. There are a couple of mornings that could be worth a paddle if you’re keen.

Starting right now, Tuesday the 8th, it’s pretty grim. We got a small 2ft swell but the period is a short 6 seconds, and the energy is weak. Wind is light from the ENE, but the surf is poor. Not worth getting wet.

Wednesday the 9th, the morning is slightly better. The swell is up a touch to 3ft, period is 7 seconds, and the wind has gone glassy from the WNW. Surfable, but very ordinary. The energy is still weak. Afternoon turns to junk again with rain showers and a cross-on breeze.

Thursday the 10th has a similar story. The morning is clean with a light cross-off breeze from the WNW, and 3ft of 8-second east swell. It’s surfable but nothing to write home about. The energy picks up a touch. The afternoon gets windier and the quality drops.

Friday the 11th is a write-off. Morning has a cross-shore wind and poor waves, and by the afternoon it’s onshore and chopped out, with the swell dropping right off.

Saturday the 12th brings a bigger push of swell, up to 6ft, but the wind is a fresh onshore cross-shore from the SSE. It’s going to be lumpy with a lot of cross-chop. The energy is strong, but it’s going to be messy. The wave comment says poor. If you’re keen, it’s a challenge, but it might be more suited to the kite crew than us paddle surfers.

Sunday the 13th is more of the same – moderate cross-onshore winds and junky waves. The swell is around 4ft but it’s all over the place.

Monday the 14th has a bit more size, around 4ft, but the wind is onshore and the energy is moderate. The wave quality is poor. Not your day.

Now, Tuesday the 15th is our first real standout. The morning looks promising. The swell is a clean 4ft from the ESE with a 9-second period. The wind is a light cross-offshore from the SSW, and the surf quality is expected to be good. The energy is moderate. This is the best window for a while. Get on it early, because the wind swings onshore in the afternoon and chops it up.

Wednesday the 16th, the morning has some potential but it’s marginal. 4ft of south-east swell, but the wind is moderate. It’s clean-ish, but it’s not a sure thing.

After that, it fades out. Thursday the 17th has a tiny 2ft groundswell with a glassy morning, but it’s too small to be exciting. Friday the 18th has a small, clean offshore wind morning, but the swell is only 1ft. Not really worth it.

The following week is quiet. From the 19th through the 23rd, we’re mostly looking at small, short-period windswell in the 3ft to 4ft range. The winds are mostly cross-shore or onshore, and the surf quality is consistently poor. The only glimmer is the morning of Tuesday the 22nd, which has a light offshore wind and a clean 2ft of swell, but it’s still very small. And the morning of Wednesday the 23rd is glassy with 3ft of short-period swell, but it’s still just ordinary.

So, to sum it up. The best bet in the next 16 days is hands down the morning of Tuesday the 15th. That’s your window. It’s got the size, the period, and the clean wind. It won’t be epic, but it’ll be the best of a pretty average bunch.

Rusty.

Short Range Forecast

Heavy rain (total 25mm), heaviest during Wed night. Warm (max 21°C on Fri morning, min 16°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 62mm), heaviest during Sat night. Warm (max 23°C on Fri night, min 15°C on Sun morning). Mainly fresh winds.

Tue
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
ESE
6
0.8
E
6
0.8
E
7
0.8
E
8
0.9
E
8
0.8
E
8
0.8
E
8
0.7
E
8
0.7
E
8
0.1
E
13
0.5
E
8
1.8
SE
9
1.4
SE
10
1.3
SE
11
0.7
SE
10
1.1
SE
10
1
ESE
11
1.3
E
7
1.1
E
7
1
SE
9
Wave Graph
Metric surfscale
Energy kJ
39
54
70
74
104
80
78
63
63
6
28
493
348
382
102
222
234
168
127
159
Wind (km/h)
10
ENE
5
NW
5
WNW
10
NNE
10
ENE
5
WNW
15
WNW
10
NNW
15
N
20
NE
10
NNW
30
SSE
30
SSE
20
SSE
25
ESE
20
E
25
E
25
ENE
25
ESE
15
SW
Wind State
on
cross-off
glassy
cross-on
on
cross-off
cross-off
cross
cross
cross-on
cross
cross
cross
cross
cross-on
cross-on
on
on
cross-on
off
High Tide
1:16AM1.21m
2:05PM1.35m
1:52AM1.32m
2:37PM1.35m
2:28AM1.38m
3:06PM1.32m
3:02AM1.40m
3:34PM1.27m
3:36AM1.37m
4:00PM1.20m
4:11AM1.30m
4:24PM1.12m
Low Tide
8:23PM0.43m
8:02AM0.03m
8:27PM0.42m
8:16AM0.00m
8:16PM0.38m
8:27AM0.01m
8:19PM0.30m
8:43AM0.05m
8:38PM0.22m
9:03AM0.11m
9:02PM0.16m
9:27AM0.19m
9:31PM0.14m
part cloud
part cloud
cloud
rain showers
heavy rain
mod rain
light rain
light rain
rain showers
part cloud
thunderstorm
cloud
cloud
heavy rain
mod rain
mod rain
heavy rain
mod rain
heavy rain
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:16
6:16
6:15
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:04
6:04
6:05
6:05
6:05
6:06
6:06
 mm
1
13
7
1
1
2
1
15
8
7
25
6
16
Temp °C
17
17
17
18
18
19
20
20
21
22
23
17
18
17
16
16
17
17
17
17
Feels °C
16
17
17
18
19
21
20
21
21
22
27
12
13
12
13
13
13
14
14
16
  • 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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