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:
Sierra de Irta surfForecast / Valencia / Spain
48hr Weather and Surf, issued 12 am Monday 15 Dec 2025 CETForecast update in hr min s Forecast update imminent
Sierra de Irta surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sierra de Irta sea temperature is
15.9° C
(Which is slightly warmer than usual)How big are the waves at Sierra de Irta today?
The current surf forecast for Sierra de Irta at 5AM is: 0.8m 5s primary swell from a East-northeast direction (forecast issued at 12:00am December 15). The wind direction is predicted to be cross-offshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 3ft (0.9m) | 5s |
| Afternoon (15 Dec) | 2ft (0.6m) | 6s |
| Evening (15 Dec) | 1.5ft (0.5m) | 5s |
Table - waves today at Sierra de Irta. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | ||||||||||||||||||||||
| 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) (?) | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 7 | 5 | 7 | 7 | 7 | 7 | 3 | 5 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 27 | 31 | 31 | 24 | 40 | 15 | 23 | 23 | 12 | 16 | 18 | 12 | 12 | 17 | 33 | 15 | 12 | 9 | 9 | 12 | 133 | 248 | 273 | 336 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross | glass | glass | glass | off | glass | cross- off | cross- off | on | cross- on | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off |
High Tide / height (m) | 6:39AM 0.12 | 4:10PM 0.09 | 7:10AM 0.13 | 4:40PM 0.08 | 7:41AM 0.15 | 5:17PM 0.07 | ||||||||||||||||||
Low Tide / height (m) | 11:11PM 0.03 | 12:26PM 0.08 | 11:25PM 0.02 | 2:00PM 0.08 | 11:43PM 0.02 | 3:15PM 0.07 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:12 | - | - | - | - | - | - | - | 8:14 | - | - | - | - | - | - | - | 8:15 | - | - | - |
| Sunset | - | - | - | - | - | - | 5:32 | - | - | - | - | - | - | - | 5:32 | - | - | - | - | - | - | - | 5:32 | - |
 |  | | |  |  | |  |  | | | |  |  | | |  | | | | | | | | |
Rain (mm) | - | 1 | 2 | 1 | 1 | 1 | 3 | 1 | 1 | - | - | - | - | 2 | 1 | 1 | - | - | - | 1 | 1 | 1 | 3 | 2 |
| Temp. °C | 13 | 14 | 14 | 14 | 14 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
| Feels °C (?) | 9 | 10 | 10 | 11 | 12 | 14 | 15 | 16 | 14 | 14 | 14 | 12 | 12 | 14 | 12 | 13 | 11 | 10 | 9 | 9 | 9 | 9 | 10 | 10 |
- 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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