Itaipu surfForecast / Rio de Janeiro / Brazil

information circle48hr Weather and Surf, issued 8 pm Wednesday 20 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 4AM is: 1.9m 14s primary swell from a South direction and 0.5m 5s secondary swell from a Southeast direction (forecast issued at 08:00pm May 20). An open ocean swell of 0.1m 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

Moderate rain (total 11mm), heaviest on Thu morning. Warm (max 24°C on Sat morning, min 19°C on Thu night). Wind will be generally light.

Wed
20
Thursday
21
Friday
22
Saturday
23
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
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
1
3
2
2
2
2
1
1
3
5
5
5
5
5
4
3
4
3
4
4
4
4
4
2
Swell
Height Map
Height MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.1
S
14
1.9
S
13
1.8
S
13
1.8
S
13
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
2.3
S
14
2.3
S
14
2.2
S
14
1.9
S
14
1.8
S
13
Wave Graph
Metric surfscale
Energy kJ
1686
1285
1110
1110
1488
1869
2334
2944
3483
3510
3519
3423
3341
2817
2857
2765
2545
2545
2346
2121
2125
1902
1329
1124
Wind (km/h)
20
SW
10
SSW
10
SSW
15
SSW
10
SSW
15
S
15
S
15
S
10
S
5
S
0
N
5
NNW
10
NNW
5
NNW
5
SSE
10
SSE
15
E
15
ENE
15
ENE
15
NE
10
NE
10
NNE
0
SE
10
S
on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
cross-off
cross-off
glassy
glassy
cross
cross-off
cross-off
cross-off
off
off
off
glassy
cross-on
High Tide
6:43PM0.90m
4:06AM0.95m
7:49PM0.85m
5:01AM0.95m
8:53PM0.82m
6:04AM0.93m
Low Tide
11:39PM0.38m
12:05PM-0.06m
00:31AM0.39m
1:03PM-0.01m
1:27AM0.37m
2:02PM0.04m
part cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
1
1
1
2
2
3
1
Temp °C
22
22
21
21
21
20
20
21
20
20
20
19
19
19
21
21
21
21
20
20
19
20
24
23
22
24
22
22
22
20
20
20
19
21
21
20
20
20
22
21
21
21
20
20
19
21
26
23
Swell 1
Height (m)
Direction
Period (s)
2.1
S
14
1.9
S
13
1.8
S
13
1.8
S
13
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
2.3
S
14
2.3
S
14
2.2
S
14
1.9
S
14
1.8
S
13
Energy kJ
1686
1285
1110
1110
1488
1869
2334
2944
3483
3510
3519
3423
3341
2817
2857
2765
2545
2545
2346
2121
2125
1902
1329
1124
Swell 2
Height (m)
Direction
Period (s)
0.2
E
8
0.2
E
8
0.2
E
8
0.1
E
8
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
0.8
ESE
6
0.1
E
9
Energy kJ
5
5
5
1
5
5
5
5
5
408
6
6
6
6
6
6
43
1
Swell 3
Height (m)
Direction
Period (s)
0.3
E
8
Energy kJ
12
Wind waves
Height (m)
Direction
Period (s)
0.5
SE
5
0.5
SE
5
1.2
ESE
6
1.2
E
6
1.2
E
6
0.8
ESE
6
Energy kJ
12
11
91
91
94
41
Nearest Offshore or Glassy
Rating
(10 max)
3
2
4
4
4
4
4
4
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
3
Distance (km)
133
13
110
110
110
121
121
121
121
0
0
0
0
0
0
34
0
5
0
0
0
0
0
34
Best forecast wave conditions in Rio de Janeiro
Rating
(10 max)
4
4
4
4
4
4
4
5
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in Brazil
Rating
(10 max)
3
7
4
4
4
4
4
5
5
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
5
5
5
5
5
5
4
5
4
4
5
7
8
7
6
5
5
6
7
7
8
8
7
6
  • 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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