Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 8 pm 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
20.4°C
1.6° 

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


Prainha surf forecast from 4 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 9AM (local time) - 4ft (1.2m), 6s period, ENE swell with offshore winds.
  • Most powerful swell: Sunday 6 Sep, 9PM (local time) - 6ft (1.8m), 9s period, SE swell with 515 kJ wave energy.
  • Next surfable swell (1★+): Friday 4 Sep, 3AM (local time) - 2ft (0.6m), 11s period with SE 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 (Sep 04) at 3AM. The primary swell is predicted to be 0.6m and 11s 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 9s and forecast to arrive on Sunday (Sep 06) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 8s period and expected on Wednesday (Sep 09) at 3AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Fri 4th Sep)2ft (0.6m) 11s
Best Surf 9AM (Tue 8th Sep)4ft (1.2m) 6s
Most Powerful 9PM (Sun 6th Sep)6ft (1.8m) 9s

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


The Lowdown

G’day, Rusty here. Look, I’ll be straight with you – the next few days are a bit of a write-off. We’ve got a long stretch of small, messy, or blown-out conditions on the cards, but there’s a couple of light at the end of the tunnel moments that are worth keeping an eye on.

Prainha is an advanced spot, very consistent, but it’s exposed to the south swell and the optimum direction is from the south. That’s the key. Everything we’ve got is coming from the east or southeast, so it’s fighting the grain a bit. The water is a touch warmer than normal for this time of year at 69°F.

We’re looking at a gap of a few days with nothing really on offer. The first real glimmer comes on the morning of Monday the 7th. A pulse of 6ft swell from the SSE, with a moderate combined energy (487), and a clean cross-offshore breeze from the SSW at 9 mph. That’s a good window. The swell period is a short 9 seconds, so it’s not a groundswell, but with the wind clean, it’ll be fun. The afternoon holds similar size (6ft) but a lighter cross-shore wind, which will still be surfable, but the morning is the pick.

Then there’s a bit of a lull again. The next standout is the morning of Tuesday the 15th. We’ve got 6ft from the SSE again, with a similar combined energy (483), and a light offshore from the SW at 6 mph. Clean conditions. The swell period is a short 8 seconds, so it’s a bit lumpy, but that offshore wind will make it rideable and fun.

The absolute best of the whole outlook, and the one I’m most excited about, is the morning of Thursday the 17th. Glassy conditions, with a north wind of just 3 mph. The swell is a clean 4ft from the east, with a short period of 6 seconds, but the combined energy is moderate (226). It’s a small day, but that glassy surface will make it silky smooth. The afternoon bumps up to 5ft from the east, but it gets a bit cross-onshore, so the morning is the clear winner.

For the rest of the fortnight, it’s mostly small, cross-shore, or onshore junk. The morning of Wednesday the 9th has a brief clean offshore window with 4ft from the east, but it’s just one slot. The morning of Tuesday the 15th is the other solid pick alongside the 17th. The 18th has a long period 16-second swell from the SE, but it’s blowing 19 mph cross-offshore, so it’s a write-off for paddle surfing – that’s more of a kite session.

So, to wrap it up: the morning of Monday the 7th is a solid, windy option, but the real standout is the glassy, clean morning of Thursday the 17th. If you can only paddle out once in the next two weeks, make it that Thursday morning.

Rusty.

Short Range Forecast

Heavy rain (total 47mm), heaviest during Sat afternoon. Very mild (max 19°C on Thu night, min 14°C on Sun afternoon). Winds increasing (light winds from the WSW on Thu night, fresh winds from the SSE by Sat afternoon).

Days 5-7 Weather Summary

Light rain (total 7mm), mostly falling on Wed morning. Very mild (max 19°C on Wed afternoon, min 13°C on Sun night). Winds decreasing (fresh winds from the S on Sun night, light winds from the NNE by Tue night).

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
1
2
0
0
2
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)
0.7
SE
11
0.5
SE
11
0.5
SE
11
0.8
E
8
0.7
E
8
0.7
E
8
1.2
SSE
6
1.1
SE
6
1.1
SE
8
1.5
SE
10
1.1
SE
6
0.8
SE
6
0.7
SE
10
0.6
SE
12
1.2
E
7
0.4
SE
10
1.3
E
8
1.1
E
8
1
E
8
Wave Graph
Metric surfscale
Energy kJ
126
58
56
88
66
66
103
80
167
398
82
40
92
101
124
36
198
135
113
Wind (km/h)
10
NNW
20
SSE
20
SE
15
SSE
20
SSE
30
S
20
S
25
S
20
SSE
25
S
15
S
10
SSE
5
WSW
15
SW
10
ESE
10
WNW
5
WSW
15
NE
10
NNE
Wind State
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
off
off
cross-on
cross-off
off
cross-on
cross-on
High Tide
3:40AM0.65m
2:40PM0.82m
9:15PM0.73m
3:19AM0.57m
10:43PM0.79m
12:01PM1.13m
11:48PM0.92m
12:52PM1.24m
00:36AM1.07m
1:31PM1.32m
1:16AM1.21m
2:05PM1.35m
1:52AM1.32m
Low Tide
11:50PM0.40m
4:45AM0.64m
12:24PM0.76m
6:21PM0.59m
5:52AM0.48m
7:03PM0.50m
6:36AM0.32m
7:37PM0.45m
7:12AM0.19m
8:04PM0.43m
7:41AM0.09m
8:23PM0.43m
8:02AM0.03m
8:27PM0.42m
rain showers
part cloud
cloud
light rain
light rain
heavy rain
heavy rain
cloud
cloud
light rain
cloud
cloud
light rain
part cloud
part cloud
part cloud
rain showers
part cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:20
6:20
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:01
6:01
6:02
6:02
6:02
6:04
6:04
 mm
1
4
4
24
14
3
1
3
3
Temp °C
19
18
18
17
17
16
16
15
15
14
14
15
15
17
18
18
17
19
19
Feels °C
18
16
16
15
15
12
11
10
11
7
11
12
14
16
17
19
18
19
20
  • Map Icons:
  • Break
  • 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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