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:
Den Haan surfForecast / North Sea / Belgium
48hr Weather and Surf, issued 6 pm Wednesday 10 Dec 2025 CETForecast update in hr min s Forecast update imminent
Den Haan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Den Haan sea temperature is
9.0° C
(Which is slightly cooler than normal)How big are the waves at Den Haan today?
The current surf forecast for Den Haan at 11PM is: 0.8m 4s primary swell from a West-southwest direction (forecast issued at 06:00pm December 10). The wind direction is predicted to be cross-shore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | - | - |
| Afternoon (10 Dec) | 3.5ft (1.1m) | 5s |
| Evening (10 Dec) | 3ft (0.9m) | 5s |
Table - waves today at Den Haan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 13 | 3 | 5 | 4 | 4 | 4 | 4 | 3 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 77 | 71 | 29 | 18 | 18 | 19 | 16 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 6 | 23 | 10 | 9 | 6 | 3 | 8 | 21 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross | cross | cross- off | cross- off |
High Tide / height (m) | 5:37PM 4.23 | 5:50AM 3.96 | 6:28PM 3.92 | 6:40AM 3.70 | 7:24PM 3.64 | 7:38AM 3.47 | ||||||||||||||||||
Low Tide / height (m) | 12:15AM 1.13 | 12:35PM 0.80 | 1:16AM 1.34 | 1:38PM 0.98 | 2:18AM 1.46 | |||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:41 | - | - | - | - | - | - | - | 8:41 | - | - | - | - | - | - | - | 8:42 | - |
| Sunset | 4:39 | - | - | - | - | - | - | - | 4:38 | - | - | - | - | - | - | - | 4:38 | - | - | - | - | - | - | - |
 |  | |  | | |  | | | | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 11 | 10 | 10 | 10 | 8 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 11 | 12 | 11 | 10 | 9 | 9 | 9 | 9 | 9 |
| Feels °C (?) | 6 | 5 | 5 | 6 | 6 | 4 | 4 | 4 | 6 | 6 | 6 | 6 | 7 | 6 | 7 | 8 | 9 | 6 | 6 | 5 | 5 | 5 | 4 | 3 |
- 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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