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:
K.O.A surfForecast / Carolina North / USA
48hr Weather and Surf, issued 6 am Thursday 11 Dec 2025 ESTForecast update in hr min s Forecast update imminent
K.O.A surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's K.O.A sea temperature is
10.5° C
(Which is 8.9°C colder than average for this time of year)How big are the waves at K.O.A today?
The current surf forecast for K.O.A at 8AM is: 0.4m 9s primary swell from a East direction (forecast issued at 06:00am December 11). An open ocean swell of 1.0m 8s is not directed at the surf break, a second open ocean swell of 1.3m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 1ft (0.3m) | 9s |
| Afternoon (11 Dec) | 4.5ft (1.3m) | 7s |
| Evening (11 Dec) | 3ft (0.9m) | 7s |
Table - waves today at K.O.A. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| 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) (?) | 9 | 9 | 9 | 6 | 7 | 7 | 7 | 6 | 6 | 5 | 5 | 5 | 6 | 7 | 6 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 37 | 24 | 14 | 166 | 128 | 70 | 56 | 85 | 41 | 30 | 13 | 8 | 6 | 7 | 6 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | on | cross- on | on | cross- on | cross- off | off | off | off | off | off | cross- off | cross |
High Tide / height (m) | 3:05AM 0.15 | 3:24PM 0.15 | 4:16AM 0.14 | 4:37PM 0.14 | 5:21AM 0.14 | 5:38PM 0.14 | ||||||||||||||||||
Low Tide / height (m) | 9:51AM 0.05 | 10:36PM 0.06 | 10:48AM 0.05 | 11:39PM 0.06 | 11:51AM 0.05 | 12:39AM 0.05 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sun 14 | |||||||||||||||||||||
| Sunrise | - | - | 7:00 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:49 | - | - | - | - | - | - | - | 4:49 | - | - | - | - | - | - | - | 4:49 | - | - | - |
 | |  |  | | | | |  | |  | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 7 | 6 | 6 | 6 | 6 | 5 | 5 | 4 | 4 | 4 | 5 | 6 | 7 | 8 | 9 | 11 | 12 | 10 | 11 | 11 | 12 | 12 | 11 |
| Feels °C (?) | 1 | -4 | -3 | -2 | -2 | -3 | -3 | -3 | -3 | -2 | -1 | 2 | 2 | 3 | 5 | 6 | 8 | 9 | 6 | 7 | 7 | 9 | 10 | 8 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our K.O.A surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest