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:
Boca del Rio surfForecast / Arequipa, Moquegua & Tacna / Peru
48hr Weather and Surf, issued 12 am Saturday 13 Dec 2025 -05Forecast update in hr min s Forecast update imminent
Boca del Rio surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Boca del Rio sea temperature is
18.6° C
(Which is 3.4°C colder than average for this time of year)How big are the waves at Boca del Rio today?
The current surf forecast for Boca del Rio at 5AM is: 0.9m 12s primary swell from a South-southwest direction and 0.2m 13s secondary swell from a West-northwest direction (forecast issued at 12:00am December 13). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-05) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 2.5ft (0.8m) | 11s |
| Afternoon (13 Dec) | 2.5ft (0.8m) | 11s |
| Evening (13 Dec) | 3.5ft (1.0m) | 12s |
Table - waves today at Boca del Rio. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 15 | 14 | 13 | 13 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 205 | 247 | 243 | 227 | 145 | 145 | 182 | 265 | 289 | 289 | 289 | 235 | 215 | 211 | 207 | 247 | 207 | 207 | 246 | 378 | 634 | 669 | 690 | 628 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | cross | cross- off | glass | cross- off | glass | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross | cross | cross- on | cross- on | cross- on |
High Tide / height (m) | 2:40AM 0.81 | 4:08PM 0.80 | 3:36AM 0.72 | 4:56PM 0.86 | 4:33AM 0.65 | 5:38PM 0.92 | ||||||||||||||||||
Low Tide / height (m) | 9:27AM 0.10 | 10:06PM 0.35 | 10:07AM 0.12 | 11:16PM 0.32 | 10:45AM 0.13 | |||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:00 | - | - | - | - | - | - | - | 5:00 | - | - | - | - | - | - | - | 5:01 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:12 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:14 | - |
 | |  |  |  | | | |  | | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 18 | 19 | 21 | 21 | 21 | 20 | 19 | 19 | 18 | 19 | 21 | 21 | 21 | 20 | 19 | 18 | 18 | 19 | 20 | 21 | 21 | 20 |
| Feels °C (?) | 20 | 18 | 19 | 20 | 20 | 19 | 20 | 20 | 20 | 20 | 19 | 21 | 21 | 19 | 21 | 21 | 20 | 19 | 19 | 20 | 19 | 20 | 20 | 20 |
- 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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