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Surf Forecasts:
Itaipu surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 2 am Wednesday 20 May 2026 -03Forecast 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 6AM is: 2.4m 16s primary swell from a South direction and 0.1m 12s secondary swell from a Southeast direction (forecast issued at 02:00am May 20). The wind direction is predicted to be glassy and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 8ft (2.4m) | 15s |
| Afternoon (20 May) | 7ft (2.2m) | 14s |
| Evening (20 May) | 6ft (1.9m) | 13s |
Table - waves today at Itaipu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 16mm), heaviest on Thu morning. Warm (max 22°C on Wed afternoon, min 19°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 14 | S 15 | S 15 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | |
1537 | 1812 | 2789 | 2683 | 2155 | 1918 | 1519 | 1275 | 1110 | 1110 | 1649 | 1869 | 2365 | 2944 | 3741 | 3764 | 3519 | 3236 | 3160 | 2651 | 2651 | 2753 | 2545 | 2541 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | glassy | cross | cross-on | on | cross-on | cross-on | cross | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | glassy | glassy | cross-off | cross-off | cross-off | cross | cross-off | cross-off | |
High Tide | 3:19AM0.94m | 6:43PM0.90m | 4:06AM0.95m | 7:49PM0.85m | 5:01AM0.95m | 8:53PM0.82m | ||||||||||||||||||
Low Tide | 11:10AM-0.11m | 11:39PM0.38m | 12:05PM-0.06m | 00:31AM0.39m | 1:03PM-0.01m | |||||||||||||||||||
 |  | |  | |  |  |  | | | | | | | | | | | |  | | | | | |
 | — | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — |
 | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 | — | — | — | — | — | — | — | 5:15 | — | — |
— | 1 | 2 | 1 | 1 | — | 1 | 2 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 21 | 21 | 21 | 21 | 22 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 21 | 21 | 21 | 21 |
24 | 22 | 24 | 23 | 23 | 23 | 22 | 22 | 23 | 23 | 22 | 21 | 19 | 18 | 18 | 20 | 21 | 21 | 20 | 20 | 22 | 20 | 20 | 21 | |
Swell 1 Height (m) Direction Period (s) | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 14 | S 15 | S 15 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 |
 kJ | 1537 | 1812 | 2789 | 2683 | 2155 | 1918 | 1519 | 1275 | 1110 | 1110 | 1649 | 1869 | 2365 | 2944 | 3741 | 3764 | 3519 | 3236 | 3160 | 2651 | 2651 | 2753 | 2545 | 2541 |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | SE 12 | — | — | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | — | — | — | — | S 18 | E 9 | E 9 | — | — |
| kJ | 201 | 177 | 6 | — | — | 5 | 5 | 5 | 1 | 1 | 5 | 5 | 5 | 5 | 12 | — | — | — | — | 408 | 6 | 6 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SSE 5 | SSE 5 | — | — | — | — | — | — | — | — | — | E 9 | E 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 14 | 12 | — | — | — | — | — | — | — | — | — | 6 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 102 | 29 | 0 | 5 | 48 | 48 | 20 | 20 | 5 | 0 | 102 | 110 | 121 | 133 | 121 | 12 | 0 | 0 | 0 | 0 | 0 | 34 | 12 | 12 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
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