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 11 am Saturday 13 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
16.5° C
(Which is normal for this time of year)How big are the waves at Comporta today?
The current surf forecast for Comporta at 4PM is: 2.5m 16s primary swell from a Northwest direction (forecast issued at 11:00am December 13). An open ocean swell of 0.4m 6s is not directed at the surf break. 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) | 11ft (3.5m) | 17s |
| Afternoon (13 Dec) | 8ft (2.5m) | 16s |
| Evening (13 Dec) | 7ft (2.2m) | 16s |
Table - waves today at Comporta. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6502 | 4992 | 3785 | 3079 | 2410 | 1860 | 1427 | 1285 | 1019 | 772 | 816 | 828 | 880 | 1227 | 1332 | 1402 | 1337 | 1373 | 1190 | 1058 | 1026 | 2318 | 2668 | 2719 |
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 | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross |
High Tide / height (m) | 9:22AM 2.21 | 10:07PM 2.09 | 10:25AM 2.18 | 11:02PM 2.16 | 11:20AM 2.20 | 11:49PM 2.26 | ||||||||||||||||||
Low Tide / height (m) | 3:50PM 0.78 | 4:11AM 0.90 | 4:45PM 0.76 | 5:10AM 0.83 | 5:33PM 0.72 | 5:59AM 0.74 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | 7:43 | - | - | - | - | - | - | - | 7:43 | - | - | - | - | - | - | - | 7:43 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - |
 |  | |  | | | | | | | |  |  | | | |  |  | |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 3 | 10 | 1 | 1 | - |
| Temp. °C | 12 | 15 | 17 | 16 | 13 | 12 | 11 | 11 | 10 | 14 | 17 | 15 | 13 | 12 | 12 | 12 | 13 | 15 | 15 | 14 | 13 | 12 | 12 | 11 |
| Feels °C (?) | 7 | 11 | 13 | 12 | 8 | 7 | 6 | 7 | 6 | 10 | 14 | 12 | 11 | 10 | 11 | 10 | 11 | 12 | 12 | 8 | 7 | 8 | 8 | 6 |
- 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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