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:
Oceano surfForecast / CAL – San Luis Obispo / USA
48hr Weather and Surf, issued 9 pm Thursday 11 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Oceano surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Oceano sea temperature is
15.9° C
(Which is 1.7°C warmer than normal for this time of year)How big are the waves at Oceano today?
The current surf forecast for Oceano at 12AM is: 1.6m 16s primary swell from a West-northwest direction and 0.4m 13s secondary swell from a 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) | - | - |
| Afternoon (12 Dec) | - | - |
| Evening (12 Dec) | 5ft (1.6m) | 16s |
Table - waves today at Oceano. (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) (?) | 15 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1198 | 1245 | 1230 | 1167 | 1106 | 911 | 899 | 778 | 735 | 595 | 547 | 461 | 454 | 373 | 288 | 254 | 203 | 199 | 156 | 156 | 109 | 111 | 79 | 77 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | off | glass | cross- on | glass | glass | glass | glass | glass | glass | glass | cross- on | glass | glass | glass | glass | glass | cross- off | glass | cross- on | cross- on |
High Tide / height (m) | 4:46AM 1.86 | 4:34PM 1.41 | 5:22AM 1.93 | 6:01PM 1.36 | 5:54AM 1.98 | |||||||||||||||||||
Low Tide / height (m) | 9:40PM 0.62 | 11:19AM 0.96 | 10:25PM 0.78 | 12:20PM 0.78 | 11:07PM 0.92 | 1:07PM 0.61 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:51 | - | - | - | - | - | - | - | 4:51 | - | - | - | - | - | - | - | 4:51 |
 | | | | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 17 | 17 | 17 | 16 | 21 | 22 | 19 | 17 | 17 | 17 | 16 | 15 | 19 | 20 | 18 | 16 | 16 | 16 | 15 | 15 | 19 | 20 | 17 |
| Feels °C (?) | 17 | 14 | 13 | 14 | 13 | 19 | 20 | 19 | 16 | 16 | 16 | 15 | 13 | 17 | 18 | 17 | 16 | 15 | 15 | 13 | 13 | 18 | 18 | 15 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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