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Surf Forecasts:

Prainha surf break

Prainha surfForecast / Santa Catarina – Sul / Brazil

information circle12 Day Weather and Surf, issued 2 am Wednesday 20 Aug 2025 -03
Forecast update in hr  min  s Forecast update imminent
Prainha surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Prainha sea temperature is
16.2° C
 (Which is 2.4°C colder than average for this time of year)

Best Forecast Surf Conditions for Prainha this week:

The surf forecast for Prainha over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 21) at 12AM. The primary swell is predicted to be 1.9m and 9s period with a secondary swell of 0.3m and 11s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Prainha in the next 12 days are 3.0m 9s and forecast to arrive on Wednesday (Aug 20) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 8s period and expected on Wednesday (Aug 20) at 9AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 21st Aug)6ft (1.9m) 9s
Best Surf 3PM (Sun 24th Aug)6.5ft (2.0m) 8s
Most Powerful 3PM (Wed 20th Aug)10ft (3.0m) 9s

Table - best surf conditions forecast for Prainha over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
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Short Range Forecast Some drizzle, heaviest during Wed morning. Warm (max 28°C on Fri morning, min 17°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Sun night. Warm (max 27°C on Sat afternoon, min 10°C on Sun afternoon). Winds decreasing (fresh winds from the SSW on Sat afternoon, calm by Sun night).

Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
1
2
2
0
1
0
0
0
0
0
2
2
3
2
2
3
2
1
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.7
ENE
3
NE
1.9
ENE
1.5
ENE
1.4
ENE
1.4
ENE
1.2
ENE
0.9
ENE
1.1
ENE
2
ENE
1.9
ENE
2
S
1.8
S
2
S
1.4
SSE
0.8
S
1.4
SSW
1.2
S
0.6
S
0.5
S
0.9
S
Period(s) (?)899888888898889911710107
Wave
Graph
(?)Metric surfscale
Energy (?)36920326183192672772181901718886027785891001482271876336163109184
Wind
(km/h)
25
NNE
20
NNE
10
W
5
S
10
E
5
NNW
15
N
20
NNE
15
N
20
N
10
NNE
30
SSW
25
SSW
20
SSW
10
SW
10
SSW
10
S
15
SSW
15
SSW
20
SSE
10
WSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
off		glasscross-
on		crosscross-
on		oncross-
on		cross-
on		onoffoffoffoffoffcross-
off		offcross-
off		cross-
off		cross-
off
High Tide
/ height (m)
2:07PM
0.77
12:14AM
0.55
2:20PM
0.76
12:38AM
0.64
2:24PM
0.73
1:08AM
0.72
2:29PM
0.71
1:39AM
0.77
2:42PM
0.69
2:11AM
0.80
2:58PM
0.68
2:43AM
0.79
3:17PM
0.66
Low Tide
/ height (m)
7:41PM
0.35
7:14AM
-0.01
8:02PM
0.35
7:51AM
-0.04
8:23PM
0.33
8:24AM
-0.04
8:42PM
0.32
8:55AM
-0.01
8:58PM
0.30
9:21AM
0.05
9:10PM
0.28
9:44AM
0.12
9:17PM
0.25
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Monday
25
Tuesday
26
Sunrise6:41--6:39--6:39--6:37--6:37--6:35--6:35--
Sunset-5:54--5:54--5:55--5:55--5:55--5:57--5:57-
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
cloud
part cloud
part cloud
cloud
cloud
rain showers
cloud
cloud
part cloud
clear
part cloud
part cloud
Rain (mm)
1-------------1------
Temp. °C202320212117282719262713111112131313161612
Feels °C (?)192220222118262518262766611121111121211
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Santa Catarina - Sul

  1. weather stationWind Update The wind is still cross-on at Prainha (light winds from the N at Florianopolis Airport 24 km from Prainha). 2.1m 7s swell from the ENE with a 0.7m 9s swell from the SSE. 2 swells combining to make bigger set waves.

    2 hours 17 minutes ago Prainha
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24 km away, 2 h 17 min ago

19 km/h
N
0.0
16.2
Air / Water (°C)
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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.

View detailed surf forecast for Prainha at:
surf-forecast.com

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 12 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 26 km (16 miles) from the city of Santo Amaro da Imperatriz. If you plan a holiday in Santa Catarina - Sul, look for hotels and other accommodation in Santo Amaro da Imperatriz. Santo Amaro da Imperatriz has rooms for a wide range of budgets as well as car hire and transport links.

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