Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
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Surf Forecasts:
Ano Nuevo surfForecast / CAL – San Mateo / USA
48hr Weather and Surf, issued 3 am Thursday 11 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Ano Nuevo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ano Nuevo sea temperature is
13.6° C
(Which is slightly warmer than usual)How big are the waves at Ano Nuevo today?
The current surf forecast for Ano Nuevo at 6AM is: 1.5m 14s primary swell from a West-northwest direction and 0.3m 15s secondary swell from a South direction (forecast issued at 03:00am December 11). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 5ft (1.6m) | 14s |
| Afternoon (11 Dec) | 5.5ft (1.7m) | 15s |
| Evening (11 Dec) | 5.5ft (1.7m) | 15s |
Table - waves today at Ano Nuevo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| 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 | 7 PM | 10 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 811 | 899 | 988 | 988 | 1191 | 1307 | 1324 | 1273 | 1207 | 1045 | 1016 | 850 | 803 | 651 | 547 | 538 | 454 | 440 | 323 | 254 | 203 | 199 | 196 | 192 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | glass | cross- off | cross- off | off | off | cross- off | off | cross- off | glass | glass | glass | glass | cross- off | cross- off | cross- off | cross- off | cross | glass | glass | glass | cross- off |
High Tide / height (m) | 3:58AM 1.39 | 3:05PM 1.10 | 4:42AM 1.44 | 4:33PM 0.98 | 5:22AM 1.49 | 6:02PM 0.94 | ||||||||||||||||||
Low Tide / height (m) | 10:03AM 0.70 | 9:45PM 0.19 | 11:15AM 0.53 | 10:38PM 0.37 | 12:16PM 0.36 | |||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:13 | - | - | - | - | - | - | - | 7:13 | - | - | - | - |
| Sunset | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - |
 | | |  | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 15 | 15 | 18 | 21 | 20 | 18 | 17 | 17 | 17 | 16 | 18 | 20 | 19 | 18 | 17 | 16 | 16 | 15 | 18 | 19 | 17 | 15 | 15 |
| Feels °C (?) | 12 | 12 | 12 | 16 | 19 | 18 | 15 | 14 | 14 | 14 | 13 | 16 | 18 | 17 | 16 | 14 | 13 | 13 | 12 | 15 | 17 | 16 | 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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