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Surf Forecasts:
Itaipu surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 2 am 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 8AM is: 0.9m 10s primary swell from a South direction (forecast issued at 02:00am May 18). An open ocean swell of 0.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 3ft (0.9m) | 10s |
| Afternoon (18 May) | 2.5ft (0.8m) | 10s |
| Evening (18 May) | 2.5ft (0.7m) | 10s |
Table - waves today at Itaipu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 30mm), heaviest during Wed night. Warm (max 24°C on Mon morning, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 15 | S 14 | S 14 | S 13 | SSW 9 | SW 8 | S 19 | S 18 | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | |
220 | 214 | 164 | 159 | 125 | 121 | 90 | 90 | 68 | 103 | 92 | 85 | 129 | 439 | 362 | 520 | 1537 | 1647 | 2131 | 2906 | 2375 | 1748 | 1541 | 1285 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-off | cross-off | cross | on | on | on | on | cross-on | cross | cross | cross-on | cross-on | on | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | on | on | cross | |
High Tide | 2:07AM0.88m | 4:53PM1.03m | 2:39AM0.91m | 5:45PM0.96m | 3:19AM0.94m | 6:43PM0.90m | ||||||||||||||||||
Low Tide | 9:32AM-0.15m | 10:07PM0.27m | 10:19AM-0.15m | 10:52PM0.34m | 11:10AM-0.11m | |||||||||||||||||||
 |  |  |  | |  |  |  | | | |  | | | | | | | | |  |  | | | |
 | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — |
 | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — |
1 | — | — | — | — | — | — | 2 | 1 | — | 1 | 2 | 3 | 2 | 1 | 2 | — | — | 1 | — | 1 | 1 | 1 | 2 | |
Temp °C | 23 | 22 | 22 | 23 | 24 | 24 | 23 | 22 | 21 | 22 | 21 | 22 | 21 | 22 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 21 |
25 | 24 | 25 | 26 | 25 | 25 | 24 | 24 | 23 | 25 | 23 | 23 | 21 | 21 | 21 | 22 | 23 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | |
Swell 1 Height (m) Direction Period (s) | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | SSW 6 | S 9 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 |
 kJ | 220 | 214 | 164 | 159 | 125 | 121 | 90 | 90 | 65 | 87 | 18 | 61 | 129 | 313 | 322 | 280 | 1537 | 1647 | 2131 | 2906 | 2375 | 1748 | 1541 | 1285 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 4 | E 5 | E 5 | E 7 | S 16 | S 16 | S 15 | S 15 | S 14 | S 9 | S 13 | S 13 | S 13 | S 19 | S 18 | S 8 | S 8 | S 8 | — | — | SE 6 | E 8 | E 8 |
| kJ | 1 | 1 | 2 | 2 | 4 | 21 | 45 | 72 | 68 | 103 | 42 | 85 | 83 | 50 | 362 | 520 | 295 | 323 | 234 | — | — | 34 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | S 21 | E 7 | S 19 | S 19 | S 17 | E 7 | E 7 | E 7 | SSW 3 | E 7 | S 14 | S 16 | S 16 | S 15 | S 15 | S 15 | SE 12 | SE 12 | — | — | — | — | — | — |
| kJ | 8 | 1 | 7 | 7 | 22 | 4 | 3 | 4 | 1 | 4 | 92 | 46 | 45 | 72 | 150 | 267 | 6 | 6 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SW 2 | SW 3 | SW 3 | — | — | SW 6 | SW 5 | SW 5 | SW 8 | — | — | — | — | — | — | — | — | SE 6 | SE 6 |
| kJ | — | — | — | — | — | 1 | 1 | 1 | — | — | 36 | 30 | 28 | 439 | — | — | — | — | — | — | — | — | 31 | 52 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 20 | 0 | 0 | 5 | 48 | 102 | 102 | 28 | 20 | 5 | 5 | 48 | 48 | 48 | 48 | 20 | 5 | 5 | 5 | 5 | 48 | 48 | 110 | 34 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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