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Surf Forecasts:

Prainha surfForecast / Rio de Janeiro / Brazil

information circle12 Day Weather and Surf, issued 2 pm Tuesday 16 Sep 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
22.2° C
 (Which is slightly warmer than usual)

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 Tuesday (Sep 16) at 9PM. The primary swell is predicted to be 1.6m and 13s period with a secondary swell of 1.3m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Prainha in the next 12 days are 2.5m 10s and forecast to arrive on Tuesday (Sep 23) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Sep 22) at 9AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 16th Sep)5ft (1.6m) 13s
Best Surf 9PM (Tue 16th Sep)5ft (1.6m) 13s
Most Powerful 3PM (Tue 23rd Sep)8ft (2.5m) 10s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Light rain (total 2mm), mostly falling on Tue afternoon. Warm (max 30°C on Fri morning, min 19°C on Wed night). Wind will be generally light.

Days 3-6 Weather Summary Some drizzle, heaviest during Sat night. Warm (max 35°C on Sun morning, min 23°C on Fri night). Winds increasing (calm on Sun afternoon, fresh winds from the NNW by Mon morning).

Tue
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
2
3
3
1
2
2
0
3
3
0
1
2
0
3
2
0
2
0
2
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2
SE
1.6
SE
1.4
SE
1.3
SE
1.1
SE
1.1
SE
1.1
SE
2.4
E
2.1
E
1.5
E
2.2
E
1.6
E
1.7
E
2.3
E
1.3
E
1.2
E
1.4
E
1.2
E
1.1
E
0.9
E
2.2
SSW
Period(s) (?)1313131212121288889888899998
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1339905659555367309303724587295659377396736228199298234210137570
Wind
(km/h)
10
SE
5
NW
10
WSW
15
SW
5
WSW
5
ENE
20
ESE
5
NW
5
NNE
20
E
10
NE
5
NW
10
SE
5
NNE
10
N
10
ENE
10
NNE
30
NNW
10
W
15
SW
20
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onglasscross-
off		crossglassglassonoffcross-
off		cross-
on		crossoffonglasscross-
off		cross-
on		cross-
off		cross-
off		cross-
off		crosscross
High Tide
/ height (m)
12:00AM
0.64
1:19PM
0.93
12:31AM
0.77
1:41PM
0.96
12:58AM
0.88
2:00PM
0.98
1:25AM
0.98
2:17PM
0.99
1:52AM
1.04
2:33PM
0.99
2:19AM
1.08
2:49PM
0.99
2:46AM
1.09
Low Tide
/ height (m)
6:31PM
0.54
5:42AM
0.19
6:46PM
0.47
6:34AM
0.11
7:10PM
0.39
7:14AM
0.04
7:35PM
0.32
7:48AM
0.01
8:00PM
0.25
8:19AM
0.01
8:26PM
0.20
8:47AM
0.03
8:51PM
0.15
9:15AM
0.08
Tue
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Sunrise--5:48--5:48--5:47--5:46--5:45--5:43--5:43
Sunset5:47--5:47--5:47--5:49--5:49--5:49--5:49--
rain showers
rain showers
part cloud
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
part cloud
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
heavy rain
light rain
Rain (mm)
11-----------1-----192
Temp. °C242122222125232130312729252535352834252219
Feels °C (?)242322222325232330302729262533352629272417
  • 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 Rio de Janeiro

  1. weather stationWind Update Still cross-shore at Prainha (light winds from the SW at Jacarepagua Airport 16 km from Prainha). 1.6m 13s groundswell from the SE with a 1.3m 6s windswell from the ESE. 2 swells combining so expect closeout sets.

    2 hours 23 minutes ago Prainha
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16 km away, 2 h 23 min ago

11 km/h
SW
0.0
22.2
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 very large city of Nilopolis. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Nilopolis. Nilopolis has rooms for a wide range of budgets as well as cheap car hire and transport links.

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