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 12 am 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
7.2° C
(Which is 2.7°C warmer than normal for this time of year)How big are the waves at Asa today?
The current surf forecast for Asa at 7AM is: 0.6m 4s primary swell from a South direction (forecast issued at 12:00am December 13). The wind direction is predicted to be cross-onshore.
| Time (CET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 2.5ft (0.7m) | 4s |
| Afternoon (13 Dec) | 2.5ft (0.7m) | 4s |
| Evening (13 Dec) | 3.5ft (1.0m) | 5s |
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 | ||||||||||||||||||||||
| 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) (?) | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3 | 5 | 7 | 10 | 15 | 11 | 13 | 31 | 44 | 44 | 37 | 51 | 87 | 123 | 128 | 143 | 126 | 132 | 108 | 119 | 115 | 87 | 62 | 70 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 2:15AM 0.09 | 2:32PM 0.13 | 3:02AM 0.09 | 3:22PM 0.13 | 3:43AM 0.08 | 4:08PM 0.13 | ||||||||||||||||||
Low Tide / height (m) | 8:19PM 0.00 | 8:04AM 0.01 | 9:10PM -0.00 | 8:47AM 0.00 | 9:54PM 0.00 | 9:26AM 0.00 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:42 | - | - | - | - | - | - | - | 8:44 | - | - | - | - | - | - | - | 8:45 | - | - | - |
| Sunset | - | - | - | - | - | 3:26 | - | - | - | - | - | - | - | 3:26 | - | - | - | - | - | - | - | 3:26 | - | - |
 | | | |  |  |  |  | | | | | |  | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | 1 | 1 | - | - | - | - | - | - | 1 | - | - | - | 1 | 4 | 1 | - | - | - | - | - |
| Temp. °C | 5 | 5 | 5 | 5 | 5 | 6 | 7 | 7 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 7 | 7 | 7 | 7 | 6 | 6 | 7 | 7 | 8 |
| Feels °C (?) | 0 | 0 | 0 | -1 | -1 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | -1 | 2 | 1 | 1 | 2 | 1 | -1 | 0 | 1 | 2 | 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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