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:
Russian Rivermouth surfForecast / CAL – Sonoma / USA
48hr Weather and Surf, issued 9 am Saturday 13 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Russian Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Russian Rivermouth sea temperature is
13.3° C
(Which is slightly warmer than usual)How big are the waves at Russian Rivermouth today?
The current surf forecast for Russian Rivermouth at 12PM is: 0.8m 12s primary swell from a West-northwest direction and 0.2m 12s secondary swell from a South-southwest direction (forecast issued at 09:00am December 13). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 2.5ft (0.8m) | 12s |
| Afternoon (13 Dec) | 2.5ft (0.8m) | 12s |
| Evening (13 Dec) | 2.5ft (0.7m) | 12s |
Table - waves today at Russian Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 1 AM | 4 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 10 | 10 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 236 | 186 | 183 | 179 | 192 | 144 | 141 | 137 | 123 | 118 | 116 | 110 | 102 | 96 | 92 | 90 | 83 | 79 | 78 | 76 | 69 | 184 | 408 | 698 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | glass | glass | glass | glass | glass | cross- off | glass | glass | glass | glass | glass | glass | glass | glass | glass | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 6:05AM 2.09 | 6:51PM 1.47 | 6:38AM 2.13 | 8:09PM 1.49 | 7:09AM 2.16 | 9:12PM 1.55 | ||||||||||||||||||
Low Tide / height (m) | 1:05PM 0.84 | 11:53PM 1.04 | 1:53PM 0.66 | 12:37AM 1.18 | 2:34PM 0.51 | 1:21AM 1.28 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 7:20 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:22 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - |
 |  | | | | | | | | | |  | | |  | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 9 | 14 | 17 | 16 | 12 | 12 | 11 | 11 | 10 | 14 | 17 | 16 | 13 | 12 | 12 | 12 | 13 | 15 | 20 | 19 | 16 | 16 | 15 | 15 |
| Feels °C (?) | 5 | 11 | 14 | 14 | 10 | 10 | 8 | 8 | 7 | 12 | 15 | 14 | 11 | 10 | 10 | 10 | 10 | 12 | 16 | 17 | 15 | 16 | 14 | 14 |
- 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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