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:
Asa surfForecast / Kattegat and Skagerrack / Sweden
48hr Weather and Surf, issued 6 pm Saturday 13 Dec 2025 CETForecast update in hr min s Forecast update imminent
Asa surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Asa sea temperature is
7.3° C
(Which is 2.8°C warmer than normal for this time of year)How big are the waves at Asa today?
The current surf forecast for Asa at 1AM is: 0.9m 5s primary swell from a West-southwest direction (forecast issued at 06:00pm December 13). The wind direction is predicted to be onshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 4ft (1.2m) | 5s |
| Afternoon (14 Dec) | 5ft (1.5m) | 6s |
| Evening (14 Dec) | 4.5ft (1.3m) | 6s |
Table - waves today at Asa. (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) (?) | 4 | 5 | 4 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 25 | 34 | 33 | 35 | 37 | 59 | 90 | 138 | 150 | 124 | 97 | 90 | 136 | 124 | 111 | 93 | 70 | 70 | 44 | 24 | 15 | 10 | 9 | 11 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 2:32PM 0.13 | 3:02AM 0.09 | 3:22PM 0.13 | 3:43AM 0.08 | 4:08PM 0.13 | 4:20AM 0.09 | ||||||||||||||||||
Low Tide / height (m) | 9:10PM -0.00 | 8:47AM 0.00 | 9:54PM 0.00 | 9:26AM 0.00 | 10:34PM 0.01 | 10:04AM 0.01 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - | - | - | - | - | 8:45 | - |
| Sunset | - | - | - | - | - | - | - | 3:26 | - | - | - | - | - | - | - | 3:26 | - | - | - | - | - | - | - | 3:26 |
 | |  |  | | |  | | | | | | | |  |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | 1 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 7 | 6 | 6 | 6 | 5 | 5 | 5 | 6 |
| Feels °C (?) | 2 | 2 | 1 | 0 | 0 | 0 | -1 | 0 | 1 | 1 | 1 | 1 | -1 | -1 | -1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
- 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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