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:
The Box surfForecast / Valencia / Spain
48hr Weather and Surf, issued 6 pm Saturday 13 Dec 2025 CETForecast update in hr min s Forecast update imminent
The Box surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Box sea temperature is
17.1° C
(Which is 1.5°C warmer than normal for this time of year)How big are the waves at The Box today?
The current surf forecast for The Box at 8PM is: 0.7m 6s primary swell from a East-southeast direction and 0.7m 4s secondary swell from a Northeast direction (forecast issued at 06:00pm December 13). The wind direction is predicted to be cross-onshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | - | - |
| Afternoon (13 Dec) | 3ft (0.9m) | 6s |
| Evening (13 Dec) | 2.5ft (0.7m) | 6s |
Table - waves today at The Box. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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 | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 47 | 34 | 39 | 57 | 62 | 52 | 35 | 32 | 23 | 19 | 9 | 8 | 13 | 11 | 12 | 21 | 15 | 9 | 8 | 9 | 8 | 8 | 7 | 3 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | glass | cross- off | cross- off | cross- off | cross | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 2:43PM 0.09 | 1:04PM 0.08 | 8:28AM 0.09 | 8:32AM 0.11 | ||||||||||||||||||||
Low Tide / height (m) | 11:42PM 0.02 | 11:19PM 0.02 | 11:08PM 0.02 | |||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:07 | - | - | - | - | - | - | - | 8:08 | - | - | - | - | - | - | - | 8:10 | - |
| Sunset | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - |
 |  |  |  | | |  | |  |  | | | | |  | | |  |  | | | |  | | |
Rain (mm) | - | - | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | - | - | 1 | - | - | - | - | - | - | - |
| Temp. °C | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 14 | 15 | 15 | 16 | 16 | 15 | 15 | 15 | 16 | 16 |
| Feels °C (?) | 11 | 11 | 10 | 12 | 13 | 13 | 14 | 14 | 13 | 14 | 14 | 15 | 14 | 12 | 11 | 14 | 15 | 15 | 13 | 12 | 12 | 12 | 14 | 14 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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