Itaipu surfForecast / Rio de Janeiro / Brazil

information circle48hr Weather and Surf, issued 8 am Thursday 21 May 2026 -03
Forecast update in hr  min  s Forecast update imminent
Itaipu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Itaipu sea temperature is
23.7° C
(Which is normal for this time of year)

How big are the waves at Itaipu today?

The current surf forecast for Itaipu at 1PM is: 2.4m 15s primary swell from a South direction (forecast issued at 08:00am May 21). An open ocean swell of 0.2m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (-03) & DateWave HeightWave Period
Morning (21 May)7ft (2.1m)15s
Afternoon (21 May)8ft (2.5m)16s
Evening (21 May)10ft (3.0m)15s

Table - waves today at Itaipu. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Thu morning. Warm (max 25°C on Sat afternoon, min 19°C on Thu night). Wind will be generally light.

Thursday
21
Friday
22
Saturday
23
Sun
24
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
Rating
(10 max)
2
2
1
1
3
5
5
5
5
5
4
3
4
4
4
4
4
4
4
4
3
2
3
2
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.9
S
14
2.1
S
15
2.3
S
15
2.5
S
16
2.5
S
16
3
S
15
3
S
15
3
S
14
3
S
14
2.5
S
14
2.5
S
14
2.5
S
14
2.5
S
14
2.5
S
14
2.4
S
14
2.4
S
14
2.3
S
14
2.2
S
14
2.1
S
14
1.8
S
13
1.7
S
13
1.6
S
13
1.5
S
13
1.5
S
13
Wave Graph
Metric surfscale
Energy kJ
1488
1869
2334
2944
3483
3510
3519
3423
3341
2817
2857
2765
2753
2545
2346
2314
2121
1891
1614
1124
972
848
734
712
Wind (km/h)
15
SSW
10
SSW
15
S
15
S
10
S
5
SSE
5
N
5
N
5
NNW
5
N
5
SSE
10
SE
15
E
15
E
10
ENE
10
NE
10
NE
10
NE
5
ESE
10
ESE
10
E
5
WNW
10
NNW
5
WSW
on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
glassy
glassy
glassy
glassy
cross
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross
cross-off
cross-on
High Tide
4:06AM0.95m
7:49PM0.85m
5:01AM0.95m
8:53PM0.82m
6:04AM0.93m
9:49PM0.83m
Low Tide
12:05PM-0.06m
00:31AM0.39m
1:03PM-0.01m
1:27AM0.37m
2:02PM0.04m
2:26AM0.32m
rain showers
rain showers
light rain
light rain
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:20
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:15
5:15
5:15
5:15
1
1
1
1
Temp °C
21
21
21
21
21
20
20
19
19
19
20
21
21
21
20
20
20
20
24
25
24
22
22
21
21
21
20
19
20
20
21
20
20
20
21
21
20
21
20
20
21
21
25
26
25
24
24
23
Swell 1
Height (m)
Direction
Period (s)
1.9
S
14
2.1
S
15
2.3
S
15
2.5
S
16
2.5
S
16
3
S
15
3
S
15
3
S
14
3
S
14
2.5
S
14
2.5
S
14
2.5
S
14
2.5
S
14
2.5
S
14
2.4
S
14
2.4
S
14
2.3
S
14
2.2
S
14
2.1
S
14
1.8
S
13
1.7
S
13
1.6
S
13
1.5
S
13
1.5
S
13
Energy kJ
1488
1869
2334
2944
3483
3510
3519
3423
3341
2817
2857
2765
2753
2545
2346
2314
2121
1891
1614
1124
972
848
734
712
Swell 2
Height (m)
Direction
Period (s)
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.2
E
8
0.8
S
18
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
8
0.9
ESE
6
0.7
ESE
6
Energy kJ
5
5
5
5
5
408
6
6
6
6
6
6
54
33
Swell 3
Height (m)
Direction
Period (s)
0.3
E
8
Energy kJ
12
Wind waves
Height (m)
Direction
Period (s)
1.1
ESE
6
1.3
E
6
1
ESE
6
1.1
ESE
6
1.1
ESE
6
1.2
E
6
1.1
E
6
Energy kJ
80
110
66
77
86
92
77
Nearest Offshore or Glassy
Rating
(10 max)
2
4
4
4
4
5
5
5
5
5
4
4
4
4
4
4
4
4
4
4
3
3
3
3
Distance (km)
102
102
121
121
110
0
0
0
0
0
0
34
0
0
0
0
0
0
0
0
0
5
0
19
Best forecast wave conditions in Rio de Janeiro
Rating
(10 max)
4
4
4
4
4
5
5
5
5
5
5
4
4
5
4
4
4
4
4
4
4
4
3
3
Best forecast wave conditions in Brazil
Rating
(10 max)
5
5
5
4
5
5
5
5
5
5
5
4
4
5
4
4
4
4
4
4
4
4
3
3
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
7
7
7
6
6
7
8
6
7
8
8
7
7
6
6
5
5
  • 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

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