Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
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Surf Forecasts:
Slufter surfForecast / Netherlands / Netherlands
48hr Weather and Surf, issued 6 am Wednesday 17 Dec 2025 CETForecast update in hr min s Forecast update imminent
Slufter surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Slufter sea temperature is
8.3° C
(Which is normal for this time of year)How big are the waves at Slufter today?
The current surf forecast for Slufter at 10AM is: 0.3m 4s primary swell from a Northwest direction and 0.1m 6s secondary swell from a North direction, 0.2m 3s secondary swell from a West-southwest direction (forecast issued at 06:00am December 17). The wind direction is predicted to be cross-onshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 1ft (0.3m) | 4s |
| Afternoon (17 Dec) | 1.5ft (0.4m) | 4s |
| Evening (17 Dec) | 3ft (0.9m) | 4s |
Table - waves today at Slufter. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 5 | 7 | 7 | 7 | 7 | 6 | 5 | 5 | 6 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2 | 2 | 3 | 7 | 4 | 10 | 41 | 107 | 172 | 240 | 255 | 200 | 62 | 103 | 208 | 277 | 261 | 125 | 50 | 49 | 57 | 65 | 62 | 45 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | on | cross- on | cross | cross | cross | cross | cross- on | cross | cross | cross | cross | cross | cross- on | cross | on | on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 8:06AM 0.72 | 1:02PM 2.37 | 1:26AM 2.46 | 8:51AM 0.70 | 1:40PM 2.45 | 2:03AM 2.47 | 9:33AM 0.66 | 2:17PM 2.53 | 10:04PM 0.69 | |||||||||||||||
Low Tide / height (m) | 6:31AM 0.65 | 9:09AM 0.68 | 7:09PM 0.52 | 7:18AM 9:52AM 0.58 0.64 | 7:47PM 0.54 | 8:00AM 0.53 | 10:28AM 0.61 | 8:22PM 0.58 | 10:25PM 0.69 | |||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | - | 8:45 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:47 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:32 | - | - | - | - | - | - | - | 4:32 | - | - | - | - | - | - | - | 4:32 | - | - | - |
 | |  |  | | |  | | |  |  | |  | | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 | - | - | - | - | - | 1 | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 10 | 12 | 12 | 12 | 11 | 10 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels °C (?) | 6 | 6 | 6 | 5 | 3 | 2 | 1 | -1 | -2 | -2 | -1 | 2 | 1 | 1 | 2 | 3 | 5 | 5 | 4 | 3 | 3 | 4 | 4 | 5 |
- 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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