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:
S-Turns surfForecast / Carolina North / USA
48hr Weather and Surf, issued 6 pm Tuesday 16 Dec 2025 ESTForecast update in hr min s Forecast update imminent
S-Turns surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's S-Turns sea temperature is
11.7° C
(Which is 7.1°C colder than average for this time of year)How big are the waves at S-Turns today?
The current surf forecast for S-Turns at 10PM is: 0.6m 10s primary swell from a East-southeast direction and 0.4m 8s secondary swell from a Northeast direction (forecast issued at 06:00pm December 16). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 2ft (0.6m) | 8s |
| Evening (16 Dec) | 1.5ft (0.5m) | 10s |
Table - waves today at S-Turns. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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) (?) | 8 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 6 | 7 | 8 | 9 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 42 | 39 | 67 | 65 | 64 | 64 | 63 | 61 | 59 | 58 | 56 | 56 | 58 | 80 | 88 | 88 | 86 | 86 | 184 | 427 | 1015 | 2452 | 1317 | 2081 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | off | cross- off | cross- off | cross- off | off | off | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 8:12PM 0.12 | 8:36AM 0.16 | 9:00PM 0.12 | 9:11AM 0.16 | 9:45PM 0.12 | 9:44AM 0.16 | ||||||||||||||||||
Low Tide / height (m) | 2:57PM 0.04 | 3:11AM 0.04 | 3:48PM 0.03 | 3:56AM 0.04 | 4:34PM 0.02 | 4:40AM 0.04 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:03 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - |
| Sunset | 4:50 | - | - | - | - | - | - | - | 4:50 | - | - | - | - | - | - | - | 4:50 | - | - | - | - | - | - | - |
 |  | | | | | |  | |  | |  | | | |  | | | | |  |  |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5 | 37 | 4 | - |
| Temp. °C | 7 | 9 | 10 | 10 | 10 | 10 | 10 | 12 | 14 | 14 | 13 | 12 | 11 | 12 | 14 | 16 | 19 | 20 | 20 | 20 | 18 | 17 | 18 | 17 |
| Feels °C (?) | 1 | 2 | 3 | 3 | 4 | 3 | 3 | 5 | 9 | 10 | 10 | 9 | 8 | 9 | 11 | 15 | 17 | 15 | 14 | 13 | 9 | 11 | 12 | 11 |
- 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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