Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 8 am 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
19.8°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 24 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 3AM (local time) - 1.5ft (0.5m), 16s period, SE swell with offshore winds.
  • Most powerful swell: Wednesday 26 Aug, 9PM (local time) - 3.5ft (1.0m), 15s period, SE swell with 450 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 25 Aug, 3AM (local time) - 2.5ft (0.7m), 14s 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 Tuesday (Aug 25) at 3AM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.1m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Prainha in the next 16 days are 1.0m 15s and forecast to arrive on Wednesday (Aug 26) 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 8s period and expected on Saturday (Aug 29) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 25th Aug)2.5ft (0.7m) 14s
Best Surf 3AM (Wed 26th Aug)1.5ft (0.5m) 16s
Most Powerful 9PM (Wed 26th Aug)3.5ft (1.0m) 15s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what Prainha has got cooking for us over the next couple of weeks.

We’re looking at a real mixed bag. The water is sitting at 68°, which is a touch warmer than usual for this time of year, so you might get away with a slightly thinner wetsuit. The first few days are the real highlight here – we’ve got some clean, lined-up swell and some beautiful wind conditions. After that, it gets pretty ordinary and the energy just drops away.

The action kicks off on Monday the 24th. The morning is where it's at. A 3ft south-east swell with a 14-second period gives the waves some proper shape and push. The combined energy is a solid 259, and with a light south cross-off breeze keeping things clean, it’s gonna be a good session. A bit of a crowd could show up, but that’s the price of admission for clean waves.

Tuesday the 25th morning is a true standout. The swell drops a touch to 2ft from the south-east but the wind goes completely glassy. It is going to be a magic morning. The energy is weaker at 110, so it’s not going to be pumping, but those clean, glassy lines will be a joy. It’s the kind of morning where a longboard is your best friend.

Wednesday the 26th morning is another gem. Similar story: 3ft south-east swell, but now with a very long 16-second period, pushing that combined energy to 344. Glassy conditions again. This is proper groundswell, so the waves will have some real punch and a slow, rolling pace. It might seem a bit fat on the beach, but should offer some nice walls.

Thursday the 27th morning is still a solid call. A gentle offshore west wind at 9 mph will groom that 3ft south-east swell (269 energy) into clean, steep faces.

After Thursday, it goes downhill fast. From Friday the 28th right through to the end of the first week and into the second, it’s mostly poor. The swell hangs around 2ft to 4ft, but the wind goes all wrong – onshore, cross-onshore, and messy. The wave energy drops into the low hundreds and often below 100, which is a sure sign it’s weak and wind-chopped.

There’s a brief moment on the morning of September 7th where glassy conditions return and we get a short-period 4ft swell from the south-south-east (188 energy), but the period is a short 6 seconds. It’ll be bumpy and disorganised. Probably worth a paddle if you’re desperate, but don't get your hopes up. The morning of September 8th is also glassy, but the wave energy is again low.

Look, if you want clean waves, your window is tight – Monday the 24th through Thursday the 27th, with Tuesday and Wednesday mornings being the absolute best. After that, it’s a long stretch of mostly poor conditions until the middle of the second week. The forecasts can change, but for now, don't hold your breath.

Rusty.

Short Range Forecast

Moderate rain (total 18mm), heaviest on Wed night. Very mild (max 18°C on Wed afternoon, min 14°C on Mon morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Thu morning. Warm (max 20°C on Thu morning, min 18°C on Sat night). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
0
1
0
0
2
2
1
1
1
0
0
0
1
1
1
1
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SE
14
0.8
SE
15
0.7
SE
14
0.6
SE
13
0.6
SE
13
0.4
SE
16
0.8
SE
16
1
SE
15
1
SE
15
0.8
SE
14
0.7
SE
13
0.6
SE
13
1
E
7
1.1
E
8
1.2
E
8
1.1
E
8
1.1
E
9
1.1
E
9
1
E
9
1
E
9
1
E
9
Wave Graph
Metric surfscale
Energy kJ
257
326
195
109
104
73
344
415
438
245
176
103
97
137
187
163
180
201
162
160
168
Wind (km/h)
10
S
10
E
10
ENE
5
SW
5
ESE
5
N
10
SW
5
S
15
N
10
ESE
10
NE
15
NE
10
N
15
NNE
5
ESE
5
SSW
15
S
15
S
5
W
5
WSW
10
NNE
Wind State
cross-off
cross-on
on
cross-off
cross-on
cross
off
glassy
cross
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
cross-off
cross-off
glassy
glassy
cross-on
High Tide
1:05PM1.18m
00:56AM1.11m
1:41PM1.28m
1:33AM1.23m
2:15PM1.34m
2:09AM1.33m
2:48PM1.38m
2:43AM1.39m
3:22PM1.39m
3:19AM1.41m
3:55PM1.35m
3:56AM1.39m
4:30PM1.28m
Low Tide
7:53PM0.42m
7:40AM0.13m
8:09PM0.38m
8:02AM0.05m
8:20PM0.34m
8:21AM0.00m
8:29PM0.31m
8:40AM-0.03m
8:43PM0.27m
9:01AM-0.02m
9:03PM0.24m
9:26AM0.02m
9:28PM0.22m
cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
heavy rain
light rain
part cloud
part cloud
part cloud
rain showers
part cloud
part cloud
part cloud
rain showers
cloud
part cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:33
6:33
6:31
6:31
6:30
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:58
5:58
5:58
5:59
5:59
6:00
6:00
 mm
2
16
1
1
1
2
Temp °C
15
15
16
15
17
17
17
18
18
20
20
19
19
20
20
20
20
19
19
20
19
Feels °C
13
13
14
15
17
17
18
20
19
22
22
18
20
20
21
23
20
20
22
23
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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