Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 8 am 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
19.7°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 28 Aug 2026:

  • Best quality surf: Wednesday 2 Sep, 12AM (local time) - 4ft (1.2m), 14s period, SE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 2 Sep, 12AM (local time) - 4ft (1.2m), 14s period, SE swell with 557 kJ wave energy.
  • Next surfable swell (1★+): Saturday 29 Aug, 3AM (local time) - 3.5ft (1.1m), 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 Saturday (Aug 29) at 3AM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.1m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Prainha in the next 16 days are 1.2m 14s and forecast to arrive on Wednesday (Sep 02) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 8s period and expected on Friday (Aug 28) at 9PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sat 29th Aug)3.5ft (1.1m) 7s
Best Surf12AM (Wed 2nd Sep)4ft (1.2m) 14s
Most Powerful12AM (Wed 2nd Sep)4ft (1.2m) 14s

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


The Lowdown

G’day, this is Rusty. Look, I’ll be straight with you: the next two weeks at Prainha are mostly a flat, quiet story with a couple of short windows that might get you wet. We’re looking at a lot of small, weak swell and onshore muck, but there is one morning that stands out as your best bet in the whole 16-day run.

The first proper surf worth paddling for is Friday 28 August, but don’t get too excited. It’s small – only 4 ft from the east with a short 8-second period. The real magic that morning is the glassy conditions – NNW wind at 3 mph, dead clean. The combined energy is moderate (189), nothing to write home about, but it’s smooth and rideable. Water temp is 68°, about 2° warmer than usual for this time of year, so it’s a touch on the warm side. That session is as good as it gets for the first week.

Friday afternoon goes bad fast – cross-on chop and poor conditions. Saturday morning the 29th is clean but cross-off, and the swell drops to 3 ft. By Sunday the 30th we’re down to 2 ft, just straggly little waves. Monday the 31st sees a tiny pulse – 3 ft to 3 ft, period still only 8 to 9 seconds – but you’ll get a glassy morning and a glassy afternoon with wind swinging offshore and then dead calm. Still, it’s ordinary wave quality.

The first real standout hits on Wednesday 2 September. That morning is the pick of the entire forecast: 3 ft from the southeast, but check out that period – 12 seconds, proper groundswell energy. Combined energy jumps to 288 (moderate, but well above the rest). The wind is glassy out of the SSW at 3 mph. It’ll be clean, lined up, and much more powerful than the earlier slop. For a spot that’s exposed like Prainha (advanced, very consistent, takes south swells optimum), this is your morning. Just be aware it’s a beach setup, so that long period might make it a bit straight, but with such light wind, you’ll get some nice walls.

From there, it fades again. Thursday the 3rd has a small 2 ft, and by the 4th and 5th we’re down to 1.0 ft to 2 ft – basically flat. There’s a gap of several days with no real recommendations. Then around Monday 7 September, we get another spike: 3 ft from the southeast but now with a 14-second period – very long period groundswell. Combined energy hits 303 early (moderate strong), and the wind is cross-off from the NW at 3 mph. Could be fun for experienced surfers, but that long period on a beach break might make it tricky: long waits, fast walls. The afternoon turns cross-shore and marginal.

After that, it’s a long, poor run of onshore and cross-shore winds, with stronger breezes and messy conditions through the second week. The combined energy on Saturday 12 September spikes up to 495 (strong), but it’s cross-onshore, choppy, and blown out – more of a kite-surfing situation than a paddle session. The swell is 5 ft to 5 ft, period up to 10 seconds, but the wind ruins it.

Overall, Wednesday 2 September morning is your true standout – clean, glassy, and that 12-second pulse has some real grunt. The second-week spike on Monday 7 September is promising but less certain. Otherwise, it’s a long gap of flatness and rubbish. That’s the read from here.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sun afternoon. Warm (max 21°C on Fri afternoon, min 18°C on Sat morning). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 25mm), heaviest during Mon night. Warm (max 24°C on Tue afternoon, min 14°C on Tue night). Wind will be generally light.

Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
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
0
0
1
1
0
0
1
1
1
1
0
3
2
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)
1.1
E
8
1.1
E
8
1.1
E
7
1
E
8
0.9
E
8
0.8
E
8
0.7
E
8
0.7
E
8
0.9
E
9
0.8
E
9
0.9
E
8
0.8
ESE
8
0.7
E
8
0.6
E
9
1.2
SE
14
0.9
SE
12
1
SE
12
0.8
SE
12
0.7
SE
10
0.7
SE
11
0.6
SE
10
Wave Graph
Metric surfscale
Energy kJ
138
145
134
114
93
78
58
58
117
97
116
87
68
52
557
244
277
187
106
110
69
Wind (km/h)
5
NNW
15
NNE
15
NNE
20
S
20
SSE
15
SSW
10
S
15
E
10
NNE
15
SW
5
W
10
NW
20
SW
15
SSW
5
S
5
SSW
15
E
10
NNE
5
SW
15
E
15
NNE
Wind State
glassy
cross-on
cross-on
cross-off
cross
cross-off
cross-off
cross-on
cross-on
off
glassy
cross-off
off
cross-off
cross-off
glassy
on
cross-on
off
on
cross-on
High Tide
3:22PM1.39m
3:19AM1.41m
3:55PM1.35m
3:56AM1.39m
4:30PM1.28m
4:35AM1.33m
5:07PM1.17m
5:20AM1.23m
5:47PM1.03m
6:15AM1.12m
6:36PM0.89m
7:27AM1.00m
2:49PM0.76m
7:45PM0.77m
Low Tide
8:43PM0.27m
9:01AM-0.02m
9:03PM0.24m
9:26AM0.02m
9:28PM0.22m
9:54AM0.11m
9:57PM0.22m
10:24AM0.23m
10:29PM0.25m
10:58AM0.39m
11:06PM0.31m
11:36AM0.57m
5:15PM0.69m
11:50PM0.40m
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
light rain
part cloud
light rain
rain showers
rain showers
part cloud
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:30
6:28
6:28
6:26
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:59
6:00
6:00
6:00
6:00
6:00
6:01
 mm
1
2
2
21
Temp °C
20
21
21
19
19
19
19
19
19
20
20
20
23
24
19
16
16
16
16
17
17
Feels °C
20
21
20
17
18
20
20
20
21
23
22
23
18
21
17
14
14
14
14
15
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