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:
Comporta surfForecast / Alentejo / Portugal
48hr Weather and Surf, issued 5 pm Tuesday 16 Dec 2025 WETForecast update in hr min s Forecast update imminent
Comporta surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Comporta sea temperature is
16.2° C
(Which is slightly cooler than normal)How big are the waves at Comporta today?
The current surf forecast for Comporta at 10PM is: 4.0m 14s primary swell from a West-northwest direction (forecast issued at 05:00pm December 16). The wind direction is predicted to be cross-shore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 15ft (4.5m) | 13s |
| Evening (16 Dec) | 13ft (4.0m) | 14s |
Table - waves today at Comporta. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 23 | 21 | 20 | 19 | 18 | 17 | 17 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6906 | 6741 | 5877 | 4938 | 3678 | 2922 | 2405 | 1979 | 1708 | 1487 | 1170 | 1134 | 949 | 949 | 4000 | 7847 | 8474 | 8614 | 8382 | 7142 | 7711 | 5718 | 6194 | 5438 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross | cross- off | off | off | cross- off | cross- off | cross | cross- on | cross | cross | cross | cross | cross- on | cross | cross |
High Tide / height (m) | 12:08PM 2.25 | 12:31AM 2.37 | 12:51PM 2.31 | 1:09AM 2.47 | 1:30PM 2.37 | 1:46AM 2.55 | ||||||||||||||||||
Low Tide / height (m) | 6:15PM 0.67 | 6:42AM 0.63 | 6:53PM 0.60 | 7:20AM 0.54 | 7:30PM 0.54 | 7:57AM 0.46 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:45 | - | - | - | - | - | - | - | 7:46 | - | - | - | - | - | - | - | 7:47 | - |
| Sunset | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - | - | - |
 |  | |  | | |  | | | | | | | | | | |  | | |  | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 2 | - | - |
| Temp. °C | 13 | 13 | 13 | 12 | 11 | 11 | 10 | 12 | 14 | 13 | 13 | 13 | 12 | 12 | 11 | 14 | 15 | 15 | 15 | 14 | 14 | 14 | 12 | 13 |
| Feels °C (?) | 2 | 3 | 5 | 6 | 6 | 7 | 6 | 9 | 11 | 10 | 11 | 12 | 10 | 10 | 9 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 7 | 8 |
- 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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