Surf Forecasts:
How big are the waves at Itaipu today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 1.5ft (0.4m), 10s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 3ft (0.9m), 9s period with SW swell.
- Evening surf: Evening surf (21 Aug, local time) - 4ft (1.2m), 6s period with SSW swell.
The current surf forecast for Itaipu at 5PM is: 0.9m 5s primary swell from a Southwest direction and 0.4m 9s secondary swell from a South-southwest direction (forecast issued at 08:00am August 21). An open ocean swell of 0.5m 8s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 1.5ft (0.4m) | 10s |
| Afternoon (21 Aug) | 3ft (0.9m) | 9s |
| Evening (21 Aug) | 4ft (1.2m) | 6s |
Table - waves today at Itaipu. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 11mm), heaviest on Sun night. Warm (max 28°C on Fri morning, min 18°C on Sat night). Winds decreasing (fresh winds from the SW on Fri afternoon, light winds from the S by Sat afternoon). | ||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||||||||
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 |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 10 | SSW 10 | SSW 9 | SW 9 | SW 5 | SSW 6 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 10 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | S 10 | S 10 | S 10 | S 11 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 33 | 32 | 29 | 120 | 37 | 106 | 191 | 203 | 246 | 266 | 574 | 850 | 749 | 634 | 555 | 544 | 544 | 459 | 450 | 441 | 510 | 639 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | on | on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 9:17AM0.98m | 8:19PM0.97m | 9:49AM0.97m | 8:54PM0.98m | 10:18AM0.94m | |||||||||||||||||
Low Tide | 3:07PM0.12m | 3:28AM-0.11m | 3:54PM0.13m | 4:16AM-0.11m | 4:40PM0.15m | |||||||||||||||||
 |  | | |  |  | | | |  | | | | | | | | | | |  | | |
 | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — |
 | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — |
mm | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 1 |
Temp °C | 23 | 26 | 28 | 22 | 21 | 20 | 19 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 18 | 18 | 18 | 19 | 20 | 20 | 20 | 19 |
Feels °C | 21 | 23 | 24 | 19 | 18 | 18 | 17 | 18 | 19 | 18 | 19 | 18 | 18 | 19 | 18 | 17 | 18 | 19 | 20 | 19 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | SSW 7 | SSW 7 | SSW 8 | SSW 8 | SSW 10 | SSW 11 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 10 | S 10 | S 10 | S 10 | S 10 | S 11 |
| kJ | 52 | 55 | 43 | 45 | 32 | 21 | 191 | 203 | 246 | 266 | 574 | 850 | 749 | 634 | 555 | 544 | 544 | 459 | 450 | 441 | 510 | 639 |
Swell 2 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SSW 9 | S 15 | SSW 9 | SSW 9 | E 8 | E 8 | E 8 | SSW 11 | S 12 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | 33 | 32 | 29 | 5 | 26 | 25 | 21 | 12 | 12 | 121 | 184 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | E 11 | W 6 | SW 5 | — | SSW 6 | S 15 | S 14 | S 14 | S 13 | E 8 | E 7 | — | — | — | — | — | — | — | — | E 8 | — | — |
| kJ | 3 | 1 | 1 | — | 4 | 4 | 4 | 4 | 3 | 5 | 4 | — | — | — | — | — | — | — | — | 5 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 9 | SW 5 | SSW 6 | — | — | — | — | — | — | — | — | — | — | E 7 | E 7 | ESE 3 | — | ESE 4 | SE 4 |
| kJ | — | — | — | 120 | 37 | 106 | — | — | — | — | — | — | — | — | — | — | 8 | 23 | 3 | — | 12 | 24 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 17 | 17 | 112 | 703 | 210 | 203 | 203 | 133 | 133 | 133 | 172 | 288 | 34 | 34 | 0 | 0 | 0 | 0 | 0 | 12 | 12 | 12 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||
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