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:
Castelejo surfForecast / Algarve / Portugal
48hr Weather and Surf, issued 5 am Tuesday 16 Dec 2025 WETForecast update in hr min s Forecast update imminent
Castelejo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castelejo sea temperature is
16.7° C
(Which is slightly cooler than normal)How big are the waves at Castelejo today?
The current surf forecast for Castelejo at 10AM is: 5.5m 11s primary swell from a Northwest direction (forecast issued at 05:00am December 16). The wind direction is predicted to be onshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 18ft (5.5m) | 11s |
| Afternoon (16 Dec) | 20ft (6.0m) | 13s |
| Evening (16 Dec) | 20ft (6.0m) | 12s |
Table - waves today at Castelejo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| 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) (?) | 9 | 10 | 11 | 11 | 13 | 12 | 12 | 12 | 13 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 24 | 22 | 21 | 19 | 19 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2118 | 3325 | 6555 | 8663 | 11923 | 11393 | 10255 | 8444 | 7412 | 5950 | 4792 | 4031 | 3347 | 2842 | 2440 | 1990 | 1667 | 1614 | 3811 | 14257 | 16513 | 15221 | 14751 | 12052 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | glass | off | off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 12:00PM 2.28 | 12:23AM 2.40 | 12:43PM 2.34 | 1:01AM 2.50 | 1:22PM 2.41 | |||||||||||||||||||
Low Tide / height (m) | 5:51AM 0.75 | 6:06PM 0.67 | 6:33AM 0.64 | 6:44PM 0.61 | 7:12AM 0.54 | 7:21PM 0.54 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| Sunrise | - | - | 7:41 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - | - | - | 7:43 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:19 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - |
 | |  |  |  |  |  |  |  | |  | | | | | | | | | | | | | | |
Rain (mm) | 1 | 3 | 3 | 1 | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 13 | 13 | 14 | 14 | 13 | 14 | 14 | 13 | 12 | 13 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 16 | 15 | 15 | 16 |
| Feels °C (?) | 3 | 1 | 0 | 0 | 1 | 1 | 1 | 5 | 7 | 6 | 5 | 7 | 10 | 9 | 11 | 13 | 13 | 13 | 12 | 12 | 13 | 12 | 13 | 13 |
- 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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