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:
Cape Sebastian surfForecast / Oregon South / USA
48hr Weather and Surf, issued 9 pm Thursday 11 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Cape Sebastian surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cape Sebastian sea temperature is
12.0° C
(Which is slightly warmer than usual)How big are the waves at Cape Sebastian today?
The current surf forecast for Cape Sebastian at 1AM is: 2.3m 14s primary swell from a West-northwest direction and 0.2m 14s secondary swell from a West-southwest direction (forecast issued at 09:00pm December 11). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 6.5ft (2.0m) | 13s |
| Afternoon (12 Dec) | 6ft (1.8m) | 13s |
| Evening (12 Dec) | 5ft (1.6m) | 12s |
Table - waves today at Cape Sebastian. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2523 | 2221 | 1956 | 1641 | 1452 | 1279 | 1139 | 947 | 807 | 569 | 569 | 488 | 358 | 345 | 297 | 640 | 556 | 546 | 426 | 410 | 407 | 392 | 346 | 407 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | cross- off | off | off | cross- off | off | off | cross- off | cross | cross- off | cross | cross- on | on | cross- on | cross- on | cross- on | cross | cross- on | cross | cross- on | on | cross- on |
High Tide / height (m) | 5:58AM 2.53 | 6:00PM 1.96 | 6:39AM 2.57 | 7:26PM 1.90 | 7:17AM 2.60 | |||||||||||||||||||
Low Tide / height (m) | 11:01PM 0.85 | 12:30PM 1.22 | 11:50PM 1.08 | 1:34PM 1.03 | 12:39AM 1.28 | 2:25PM 0.84 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:37 | - | - | - | - | - | - | - | 7:37 | - | - | - | - | - | - | - | 7:37 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:45 | - | - | - | - | - | - | - | 4:45 | - | - | - | - | - | - | - | 4:45 |
 |  |  | | |  | |  | | | | | | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 13 | 14 | 14 | 16 | 19 | 18 | 16 | 15 | 14 | 14 | 13 | 14 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 15 | 15 | 15 |
| Feels °C (?) | 10 | 10 | 10 | 11 | 10 | 13 | 16 | 15 | 13 | 12 | 10 | 10 | 9 | 10 | 12 | 11 | 10 | 10 | 9 | 9 | 8 | 11 | 11 | 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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