Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 8 am 09 Jul 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
18.0° C
0.7° 

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


Prainha surf forecast from 9 Jul 2026:

  • Best quality surf: Friday 10 Jul, 6PM (local time) - 2.5ft (0.7m), 12s period, ESE swell with cross-offshore winds.
  • Most powerful swell: Monday 13 Jul, 12AM (local time) - 6ft (1.8m), 8s period, SSE swell with 373 kJ wave energy.
  • Next surfable swell (1★+): Friday 10 Jul, 3AM (local time) - 1.5ft (0.4m), 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 Friday (Jul 10) at 3AM. The primary swell is predicted to be 0.4m and 10s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Prainha in the next 16 days are 1.8m 8s and forecast to arrive on Monday (Jul 13) 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 0.5m 5s period and expected on Thursday (Jul 16) at 9AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Fri 10th Jul)1.5ft (0.4m) 10s
Best Surf 6PM (Fri 10th Jul)2.5ft (0.7m) 12s
Most Powerful12AM (Mon 13th Jul)6ft (1.8m) 8s

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


Alright, grab your board – let's talk about what's happening at Prainha.

Look, it's a mixed bag here. We've got a spot that gets plenty of swell but for the next 16 days, the quality just isn't there for very much standout surfing. Prainha is a powerful, exposed break for advanced surfers only, but most of this run has us chasing scraps. The water temp is around 64°, which is pretty standard for this time of year – nothing crazy going on there.

The week kicks off on Thursday, July 9th with tiny 0.5m (2ft) surf from the ESE. The morning is your only chance – glassy conditions and light WNW winds at 3 mph. The combined energy is weak at just (73), but with a very long 11-second period, it'll have some shape. Still, it's small and ordinary. That afternoon goes to mush with a cross-onshore chop, so don't bother.

Friday, July 10th morning offers a glimmer: 0.4m (1ft) of super-long period ESE swell (14 seconds), with WSW offshore winds at 3 mph. That's clean, but the energy is still weak at (107). It's surfable but you'll be working for it.

Then we hit a run of poor conditions straight through until Sunday, July 12th. A few mornings might be clean, like Sunday the 12th with cross-offshore winds, but the swell stays under 1.0m (3ft) and the combined energy lingers in the low hundreds. Just not worth paddling out.

Monday, July 13th morning brings our first real bump – 1.5m (5ft) from the SSE. But the period is a short 8 seconds, and it's cross-shore with a slight side-chop. Energy climbs to moderate (508), but it's messy. That same afternoon drops to 1.0m (3ft), and the quality is poor again. Not the day to get excited.

The whole second week from around July 14th through July 24th looks like a slow grind. Most days offer tiny waves around 0.6m (2ft) to 1.0m (3ft), mostly from the east. The periods are short, between 7 and 9 seconds, so it's mostly windswell with no power. A few mornings have glassy conditions (July 16th and July 19th with zero wind, July 22nd with calm) but with energy barely breaking 100, you're just floating around out there. The best window in that stretch might be Saturday morning, July 18th – glassy with 1.0m (3ft) east swell. It's small, but under a glassy surface it could be fun for a loner session.

The pattern continues right to the end. Thursday, July 23rd morning offers 1.0m (3ft) E swell with a cross-offshore breeze and moderate energy (142) – that's probably the cleanest of the later options. But Friday, July 24th morning gets stronger southerly winds at 16 mph and a short 7-second SE swell. The energy jumps to (195) but that onshore punch is going to make it choppy and ugly.

For an exposed break like this, the setup here is honestly more interesting for a kite surfer than a paddle surfer for most of this outlook. The consistent swell energy, even if small, with those side-shore winds, would suit a kite. For us wave riders, there's just no standout day. If you're desperate, the Thursday morning (July 9th) glassy session on that long period swell is the most "surfable" moment, but I wouldn't call it a standout.

Don't write the whole run off – forecasts change. But for now, Prainha is a quiet stretch.

Rusty

Short Range Forecast

Light rain (total 7mm), mostly falling on Sat night. Very mild (max 19°C on Fri morning, min 12°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Sun morning, min 13°C on Tue night). Wind will be generally light.

Thursday
9
Friday
10
Saturday
11
Sunday
12
Monday
13
Tuesday
14
Wednesday
15
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
1
0
2
0
1
0
0
0
2
1
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)
0.5
ESE
11
0.5
ESE
10
0.5
ESE
10
0.4
ESE
14
0.8
ESE
12
0.9
ESE
14
0.9
ESE
13
0.9
ESE
13
0.9
ESE
13
0.8
ESE
12
0.7
SE
12
1.8
SSE
8
1.5
SSE
8
1
SE
11
1.3
SSE
7
0.7
SE
10
0.8
SE
10
0.7
SE
10
0.7
SE
9
0.6
SE
9
0.6
ESE
9
Wave Graph
Metric surfscale
Energy kJ
65
60
58
66
175
312
273
269
242
175
152
373
270
237
167
98
117
94
86
65
54
Wind (km/h)
5
WNW
15
NNE
15
N
5
WSW
20
SSE
5
SW
10
N
10
ENE
15
NNE
20
S
15
SE
20
S
15
SSE
15
SE
10
SE
5
ENE
15
NNE
15
N
5
W
10
NE
10
N
Wind State
glassy
cross-on
cross
off
cross
cross-off
cross-on
on
cross-on
cross-off
cross-on
cross-off
cross
cross
cross
glassy
cross-on
cross
cross-off
on
cross
High Tide
10:47AM1.09m
11:20PM0.97m
11:59AM1.17m
00:18AM0.98m
1:02PM1.26m
1:09AM1.01m
1:57PM1.34m
1:54AM1.05m
2:45PM1.37m
2:34AM1.10m
3:30PM1.36m
3:13AM1.15m
4:11PM1.31m
Low Tide
6:37PM0.43m
6:31AM0.42m
7:38PM0.40m
7:11AM0.32m
8:28PM0.40m
7:43AM0.22m
9:11PM0.43m
8:08AM0.14m
9:42PM0.49m
8:31AM0.08m
9:39PM0.56m
8:57AM0.04m
9:10PM0.57m
clear
clear
clear
clear
part cloud
rain showers
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
7:01
7:01
7:01
7:01
7:00
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:36
5:37
5:37
5:37
5:37
5:37
5:38
 mm
2
5
Temp °C
15
16
16
19
17
17
16
17
17
18
18
16
15
15
16
16
16
16
16
17
17
Feels °C
14
15
14
18
14
17
16
18
17
17
17
12
12
12
13
14
14
14
15
16
17
  • 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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