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 3 pm Monday 15 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
13.2° C
(Which is slightly warmer than usual)How big are the waves at Russian Rivermouth today?
The current surf forecast for Russian Rivermouth at 9PM is: 0.9m 10s primary swell from a West-northwest direction and 0.5m 9s secondary swell from a West direction (forecast issued at 03:00pm December 15). The wind direction is predicted to be cross-onshore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | - | - |
| Afternoon (15 Dec) | 2.5ft (0.7m) | 9s |
| Evening (15 Dec) | 3ft (0.9m) | 10s |
Table - waves today at Russian Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 7 AM | 10 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 9 | 13 | 10 | 10 | 10 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 10 | 12 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 66 | 76 | 50 | 180 | 346 | 299 | 911 | 1005 | 1005 | 1002 | 1002 | 900 | 902 | 887 | 902 | 887 | 887 | 885 | 776 | 687 | 675 | 545 | 497 | 366 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | cross- on | cross- on | cross- on | cross- on | cross | cross- on | glass | glass | glass | cross- on | cross- on | cross- on | on | cross- on | cross- on | on | cross- on | cross- on | cross | cross- on | cross- on |
High Tide / height (m) | 9:12PM 1.55 | 7:40AM 2.19 | 10:03PM 1.60 | 8:13AM 2.23 | 10:46PM 1.65 | 8:48AM 2.26 | ||||||||||||||||||
Low Tide / height (m) | 2:34PM 0.51 | 1:21AM 1.28 | 3:11PM 0.39 | 2:03AM 1.35 | 3:47PM 0.29 | 2:44AM 1.39 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:22 | - | - | - | - | - | - | - | 7:22 | - | - | - | - | - | - | - | 7:24 |
| Sunset | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - |
 |  |  |  |  | | | | | | | | | |  |  |  |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 2 | 2 | 1 | - | - | - | - | - | - | - |
| Temp. °C | 9 | 13 | 18 | 16 | 15 | 14 | 14 | 15 | 15 | 17 | 18 | 17 | 15 | 14 | 14 | 15 | 15 | 15 | 14 | 13 | 9 | 9 | 9 | 9 |
| Feels °C (?) | 7 | 11 | 16 | 14 | 14 | 13 | 13 | 15 | 15 | 18 | 19 | 18 | 15 | 14 | 14 | 15 | 13 | 13 | 11 | 9 | 6 | 7 | 7 | 6 |
- 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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