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:
Belgas surfForecast / Peniche / Portugal
48hr Weather and Surf, issued 11 am Friday 12 Dec 2025 WETForecast update in hr min s Forecast update imminent
Belgas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Belgas sea temperature is
15.5° C
(Which is slightly cooler than normal)How big are the waves at Belgas today?
The current surf forecast for Belgas at 2PM is: 4.5m 16s primary swell from a West-northwest direction (forecast issued at 11:00am December 12). The wind direction is predicted to be offshore and the swell rating is 11.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 7.5ft (2.3m) | 16s |
| Afternoon (12 Dec) | 15ft (4.5m) | 16s |
| Evening (12 Dec) | 16ft (5.0m) | 18s |
Table - waves today at Belgas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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) (?) | 16 | 16 | 16 | 19 | 18 | 18 | 18 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2736 | 7563 | 11655 | 17499 | 16378 | 15488 | 14153 | 12740 | 11152 | 8671 | 6863 | 5922 | 4454 | 3609 | 3280 | 2717 | 2002 | 1723 | 1723 | 1874 | 2130 | 2438 | 2278 | 2130 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- on | glass | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross- off | glass | off | off |
High Tide / height (m) | 8:30AM 2.35 | 9:16PM 2.10 | 9:36AM 2.26 | 10:19PM 2.13 | 10:38AM 2.22 | 11:15PM 2.21 | ||||||||||||||||||
Low Tide / height (m) | 3:00PM 0.75 | 3:16AM 0.91 | 4:03PM 0.78 | 4:24AM 0.90 | 4:58PM 0.78 | 5:24AM 0.84 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | 7:47 | - | - | - | - | - | - | - | 7:48 | - | - | - | - | - | - | - | 7:48 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - |
 | | |  | | |  | |  | | |  | | | | | | | | | | | | | |
Rain (mm) | 2 | 3 | 1 | 1 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 12 | 12 | 12 | 12 | 13 | 14 | 14 | 15 | 16 | 15 | 15 | 15 | 13 | 12 | 12 | 15 | 16 | 15 | 14 | 13 | 12 | 12 |
| Feels °C (?) | 10 | 9 | 11 | 9 | 9 | 7 | 10 | 11 | 10 | 11 | 12 | 11 | 12 | 12 | 10 | 8 | 8 | 11 | 13 | 13 | 12 | 12 | 10 | 10 |
- 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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