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Surf Forecasts:
Itaipu surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 8 pm Monday 18 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
23.4° C
(Which is slightly cooler than normal)How big are the waves at Itaipu today?
The current surf forecast for Itaipu at 4AM is: 0.5m 14s primary swell from a South direction and 0.7m 6s secondary swell from a Southwest direction, 0.5m 9s secondary swell from a South direction, 0.9m 5s secondary swell from a Southwest direction (forecast issued at 08:00pm May 18). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 2.5ft (0.7m) | 9s |
| Afternoon (19 May) | 5.5ft (1.7m) | 8s |
| Evening (19 May) | 3ft (0.9m) | 18s |
Table - waves today at Itaipu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 29mm), heaviest during Thu morning. Warm (max 22°C on Mon night, min 19°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
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 | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
S 10 | S 10 | S 15 | S 14 | S 14 | S 9 | SW 8 | SW 8 | S 19 | S 18 | 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 | |
90 | 89 | 68 | 103 | 92 | 79 | 418 | 353 | 362 | 520 | 1537 | 1812 | 2131 | 2906 | 2342 | 1748 | 1553 | 1144 | 991 | 1110 | 1492 | 2055 | 2401 | 2944 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | cross-on | on | cross-on | on | on | on | cross-on | cross | cross | cross-off | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross | cross-on | |
High Tide | 4:53PM1.03m | 2:39AM0.91m | 5:45PM0.96m | 3:19AM0.94m | 6:43PM0.90m | 4:06AM0.95m | ||||||||||||||||||
Low Tide | 10:07PM0.27m | 10:19AM-0.15m | 10:52PM0.34m | 11:10AM-0.11m | 11:39PM0.38m | 12:05PM-0.06m | ||||||||||||||||||
 | |  |  | |  | | | | | | | | |  |  |  | | | | | | | | |
 | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:20 | — | — | — |
 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 |
— | — | — | 1 | 1 | 1 | 1 | 1 | 1 | — | 1 | 1 | — | 1 | 1 | — | 1 | 1 | 1 | 2 | 2 | 4 | 2 | 4 | |
Temp °C | 23 | 22 | 22 | 22 | 22 | 21 | 21 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 21 | 22 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 |
24 | 22 | 24 | 24 | 23 | 19 | 19 | 21 | 22 | 23 | 22 | 22 | 21 | 21 | 22 | 23 | 20 | 21 | 22 | 20 | 20 | 21 | 22 | 18 | |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | SW 5 | SW 6 | SW 6 | S 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | 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 |
 kJ | 90 | 89 | 25 | 31 | 31 | 79 | 234 | 251 | 226 | 253 | 1537 | 1812 | 2131 | 2906 | 2342 | 1748 | 1553 | 1144 | 991 | 1110 | 1492 | 2055 | 2401 | 2944 |
Swell 2 Height (m) Direction Period (s) | S 16 | S 15 | S 10 | S 9 | S 9 | SW 5 | S 13 | S 13 | S 19 | S 18 | S 8 | S 8 | S 8 | — | — | SE 6 | SE 6 | SE 6 | SE 6 | E 8 | E 8 | E 8 | SE 5 | ESE 6 |
| kJ | 45 | 72 | 64 | 43 | 42 | 18 | 54 | 50 | 362 | 520 | 273 | 307 | 228 | — | — | 42 | 30 | 30 | 22 | 1 | 1 | 5 | 16 | 6 |
Swell 3 Height (m) Direction Period (s) | E 7 | E 7 | S 15 | S 14 | S 14 | S 13 | S 16 | S 15 | S 15 | S 15 | SE 12 | SE 12 | — | — | — | E 8 | E 8 | E 8 | E 8 | — | E 8 | E 8 | E 8 | — |
| kJ | 4 | 4 | 68 | 103 | 92 | 55 | 45 | 72 | 104 | 267 | 6 | 6 | — | — | — | 5 | 5 | 5 | 1 | — | 4 | 5 | 5 | — |
Wind waves Height (m) Direction Period (s) | SW 3 | SW 4 | SW 5 | SW 5 | SW 5 | WSW 5 | SW 8 | SW 8 | — | — | — | — | — | — | — | — | — | — | — | SE 5 | SE 5 | — | — | — |
| kJ | 3 | 7 | 45 | 49 | 41 | 26 | 418 | 353 | — | — | — | — | — | — | — | — | — | — | — | 23 | 25 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 102 | 48 | 20 | 106 | 48 | 110 | 203 | 210 | 133 | 102 | 5 | 5 | 0 | 5 | 5 | 55 | 28 | 19 | 19 | 34 | 34 | 0 | 19 | 102 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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