Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Geriba surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 2 am Tuesday 16 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Geriba surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Geriba sea temperature is
26.2° C
(Which is 1.4°C warmer than normal for this time of year)How big are the waves at Geriba today?
The current surf forecast for Geriba at 7AM is: 0.4m 9s primary swell from a South-southeast direction and 0.1m 12s secondary swell from a South direction (forecast issued at 02:00am December 16). An open ocean swell of 1.6m 8s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 1.5ft (0.4m) | 9s |
| Afternoon (16 Dec) | 1.5ft (0.4m) | 10s |
| Evening (16 Dec) | 1ft (0.3m) | 10s |
Table - waves today at Geriba. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 9 | 9 | 9 | 10 | 9 | 10 | 10 | 10 | 15 | 10 | 5 | 6 | 7 | 8 | 8 | 8 | 8 | 8 | 7 | 9 | 9 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 47 | 44 | 28 | 28 | 29 | 31 | 15 | 19 | 19 | 19 | 19 | 24 | 80 | 243 | 389 | 377 | 212 | 172 | 264 | 130 | 113 | 106 | 134 | 206 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | cross- off | cross- off | off | cross- off | cross- on | cross- on | on | on | on | on | on | on | on | on | on | on | on | glass | cross- on |
High Tide / height (m) | 11:48PM 0.93 | 11:51AM 0.87 | 12:28AM 0.96 | 12:26PM 0.90 | 1:16AM 0.99 | 1:10PM 0.93 | ||||||||||||||||||
Low Tide / height (m) | 5:56AM 0.30 | 6:05PM 0.16 | 6:47AM 0.28 | 6:54PM 0.10 | 7:38AM 0.26 | 7:43PM 0.05 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | 4:56 | - | - | - | - | - | - | - | 4:56 | - | - | - | - | - | - | - | 4:58 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:29 | - | - | - | - | - | - | - | 6:30 | - |
 | |  |  | | |  |  | | |  |  | | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | 1 | 1 | 2 | 1 | - | 1 | 1 | 1 | 1 | - | - | - | - | - | - | 1 | 1 | - |
| Temp. °C | 23 | 23 | 23 | 26 | 29 | 28 | 26 | 24 | 24 | 24 | 24 | 24 | 23 | 22 | 22 | 23 | 22 | 22 | 22 | 23 | 23 | 22 | 22 | 21 |
| Feels °C (?) | 24 | 25 | 25 | 27 | 30 | 28 | 27 | 26 | 28 | 26 | 25 | 24 | 21 | 19 | 20 | 21 | 21 | 22 | 21 | 23 | 23 | 23 | 24 | 22 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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