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:
Cogumelo surfForecast / Alentejo / Portugal
48hr Weather and Surf, issued 5 am Saturday 13 Dec 2025 WETForecast update in hr min s Forecast update imminent
Cogumelo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cogumelo sea temperature is
16.4° C
(Which is slightly cooler than normal)How big are the waves at Cogumelo today?
The current surf forecast for Cogumelo at 9AM is: 4.5m 17s primary swell from a Northwest direction and 0.7m 6s secondary swell from a South-southeast direction (forecast issued at 05:00am December 13). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 15ft (4.5m) | 17s |
| Afternoon (13 Dec) | 13ft (4.0m) | 16s |
| Evening (13 Dec) | 11ft (3.5m) | 16s |
Table - waves today at Cogumelo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 14872 | 13721 | 12635 | 10504 | 8161 | 6427 | 5606 | 4452 | 3261 | 2763 | 2293 | 1783 | 1521 | 1521 | 1657 | 1970 | 2141 | 2094 | 2122 | 2008 | 1905 | 1734 | 1901 | 1363 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- off | off | glass | glass | cross | cross | cross- on | on | cross- on | cross- on | cross |
High Tide / height (m) | 9:19AM 2.23 | 10:04PM 2.10 | 10:22AM 2.20 | 10:59PM 2.18 | 11:17AM 2.21 | 11:46PM 2.28 | ||||||||||||||||||
Low Tide / height (m) | 2:59AM 0.91 | 3:47PM 0.78 | 4:08AM 0.90 | 4:42PM 0.77 | 5:07AM 0.84 | 5:30PM 0.73 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | - | 7:41 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:15 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - |
 | |  |  |  |  | | | | | | | | | | |  | | | |  | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 9 | 9 |
| Temp. °C | 13 | 13 | 13 | 16 | 18 | 15 | 14 | 13 | 12 | 11 | 11 | 15 | 17 | 15 | 14 | 13 | 12 | 12 | 13 | 16 | 14 | 14 | 13 | 12 |
| Feels °C (?) | 9 | 9 | 9 | 12 | 15 | 12 | 10 | 10 | 9 | 8 | 9 | 12 | 14 | 13 | 13 | 12 | 11 | 10 | 11 | 13 | 11 | 9 | 11 | 9 |
- 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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