Prainha Surf Break

Lat Long: 26.23° S 48.50° W

Prainha Surf Forecast and Surf Report

Issued: 2 pm 23 Jul 2026 (local time)

Forecast update in  hr  min

Today's Prainha sea temperature is
19.1° C
0.8° 

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


Prainha surf forecast from 24 Jul 2026:

  • Best quality surf: Friday 24 Jul, 3AM (local time) - 5ft (1.6m), 8s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Friday 24 Jul, 3AM (local time) - 5ft (1.6m), 8s period, SSE swell with 346 kJ wave energy.
  • Next surfable swell (1★+): Friday 24 Jul, 12AM (local time) - 3ft (0.9m), 8s 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 (Jul 24) at 12AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.5m and 8s. 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 1.6m 8s and forecast to arrive on Friday (Jul 24) at 3AM. 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 Tuesday (Jul 28) at 6AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Fri 24th Jul)3ft (0.9m) 8s
Best Surf 3AM (Fri 24th Jul)5ft (1.6m) 8s
Most Powerful 3AM (Fri 24th Jul)5ft (1.6m) 8s

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


The Lowdown

G'day, Rusty here. Let's have a proper look at what's shaping up for Prainha over the next couple of weeks.

First up, the water temp is sitting at 66°F, which is pretty much what you'd expect for this time of year – just a touch warmer than average, so nothing wild there.

Right now, the surf is a bit of a struggle. Thursday afternoon is small and choppy with a 2ft SSE swell and a cross-on wind from the SE. The combined energy is weak at 129. It's not what any of us are looking for. Friday morning is a little better – 3ft SE swell, 10-second period, and a light cross-off breeze making it clean, but it's still very ordinary. That theme carries through Saturday morning: 3ft SE swell with 9-second period, but the wind goes glassy from the WNW. That's a nice window of clean, small waves, but the energy is only moderate at 130. Saturday afternoon the wind swings onshore from the NE and kills it. Sunday morning is another clean window with a cross-off NW breeze and 2ft SE swell, but again, it's not firing.

We then hit a real flat spell from Monday the 27th of July through to the afternoon of Saturday the 1st of August. Swell drops to 2ft and below, period is short around 7-8 seconds, and the combined energy is tiny – down to single digits and low double digits. There's nothing worth paddling out for. The only small highlight is Wednesday morning the 29th of July with a light offshore wind from the W, but the swell is only 2ft from the E with a 7-second period and energy at 44 – not enough to get excited about.

Now, here's the stand-out window. Sunday morning the 2nd of August brings a jump: 5ft SSE swell with a short 7-second period, but the combined energy jumps to 296 – that's moderate, and it's clean with a light cross-off breeze from the SSW. This is the first proper surf we've seen in over a week. It's good for experienced surfers, but the short period means it'll be a bit punchy and less organised.

Then, Tuesday morning the 4th of August is another beauty. Glassy conditions, 4ft ESE swell with a 10-second period, and combined energy at 235. Clean, lined-up waves – that's a morning you'd want to be in the water.

But if you're after the real standout, circle Wednesday morning the 5th of August. 5ft ESE swell, 9-second period, and combined energy at 322 – that's moderate to strong. The wind is a light cross-off from the SW, making it clean. It's a proper session for solid surfers. Thursday morning the 6th of August is also a gem: glassy conditions, 5ft E swell, 9-second period, and energy at 367. That's the best energy of the whole run, and it's glassy – absolutely prime.

Friday the 7th of August rounds it out with glassy mornings again, 4ft E swell, and clean conditions. A solid end to the run.

So overall, the first week is a write-off for decent waves. The real action kicks off from Sunday the 2nd of August and runs through to Friday the 7th. The absolute pick is Thursday the 6th of August – glassy, 5ft E swell, and strong energy. Wednesday morning the 5th is a close second.

Prainha is a consistent, advanced-level break, so when it's on, it's on. The crowds are sometimes an issue, but with this quality, expect company on those good days.

Stay stoked.

Rusty.

Short Range Forecast

Some drizzle, heaviest during Sun morning. Very mild (max 18°C on Thu afternoon, min 15°C on Sun morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 5mm), mostly falling on Sun night. Warm (max 20°C on Wed morning, min 17°C on Sun afternoon). Wind will be generally light.

Thu
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
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
1
1
0
0
1
0
0
1
0
0
0
0
0
0
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
SSE
9
0.9
SE
8
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
9
0.9
SE
9
0.9
SE
9
0.7
SE
9
0.7
ESE
9
0.6
ESE
8
0.5
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
SE
8
0.5
E
7
0.4
SE
9
0.6
E
8
Wave Graph
Metric surfscale
Energy kJ
79
109
150
163
150
120
120
120
81
67
46
39
27
27
27
26
17
21
21
44
Wind (km/h)
20
SE
15
S
10
S
10
SE
5
W
5
WNW
10
NE
10
N
5
NW
10
NE
15
N
5
WSW
15
NE
5
ENE
5
NNW
15
SE
0
NNW
15
W
20
NNE
20
S
Wind State
cross-on
cross-off
cross-off
cross-on
cross-off
glassy
on
cross
cross-off
cross-on
cross-on
glassy
on
glassy
cross
cross
glassy
off
cross-on
cross-off
High Tide
10:25PM0.85m
11:34AM0.99m
11:33PM0.90m
12:35PM1.08m
00:28AM0.97m
1:22PM1.16m
1:14AM1.06m
2:02PM1.24m
1:54AM1.15m
2:38PM1.29m
2:30AM1.23m
3:14PM1.32m
Low Tide
6:26PM0.63m
5:56AM0.45m
7:10PM0.56m
6:41AM0.35m
7:43PM0.51m
7:15AM0.26m
8:08PM0.46m
7:44AM0.18m
8:26PM0.43m
8:09AM0.12m
8:36PM0.41m
8:33AM0.06m
8:47PM0.38m
part cloud
cloud
part cloud
cloud
part cloud
clear
clear
clear
rain showers
part cloud
rain showers
clear
clear
rain showers
part cloud
part cloud
part cloud
light rain
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:56
6:56
6:56
6:54
6:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:43
5:43
5:44
5:44
5:45
5:45
5:45
 mm
1
3
1
1
1
20
Temp °C
18
17
17
17
17
17
17
17
17
18
18
19
19
19
19
19
18
20
20
20
Feels °C
15
15
17
17
18
17
16
17
17
18
19
20
19
21
19
19
20
20
19
21
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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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