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:
Navarro Rivermouth surfForecast / CAL – Mendocino County / USA
48hr Weather and Surf, issued 9 pm Thursday 11 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Navarro Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Navarro Rivermouth sea temperature is
12.9° C
(Which is slightly warmer than usual)How big are the waves at Navarro Rivermouth today?
The current surf forecast for Navarro Rivermouth at 1AM is: 2.4m 14s primary swell from a West-northwest direction (forecast issued at 09:00pm December 11). An open ocean swell of 0.2m 13s is not directed at the surf break. 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) | 7ft (2.1m) | 14s |
| Afternoon (12 Dec) | 6ft (1.8m) | 13s |
| Evening (12 Dec) | 5ft (1.6m) | 13s |
Table - waves today at Navarro Rivermouth. (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 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2994 | 2717 | 2374 | 2093 | 1796 | 1474 | 1326 | 1120 | 995 | 800 | 634 | 539 | 437 | 392 | 361 | 361 | 373 | 353 | 276 | 253 | 192 | 189 | 182 | 210 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | cross- off | off | cross- off | glass | on | glass | glass | glass | cross- off | off | off | glass | on | glass | glass | off | off | off | off | cross- off | cross- on | cross- off |
High Tide / height (m) | 4:03PM 1.32 | 5:38AM 1.66 | 5:29PM 1.19 | 6:17AM 1.70 | 6:58PM 1.14 | 6:53AM 1.74 | ||||||||||||||||||
Low Tide / height (m) | 10:35PM 0.24 | 12:02PM 0.57 | 11:26PM 0.42 | 1:03PM 0.39 | 12:16AM 0.59 | 1:53PM 0.22 | ||||||||||||||||||
Thu 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:24 | - | - | - | - | - | - | - | 7:24 | - | - | - | - | - | - | - | 7:26 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 |
 | | | | |  | |  |  | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 15 | 14 | 13 | 13 | 15 | 15 | 13 | 14 | 14 | 13 | 13 | 13 | 16 | 15 | 13 | 13 | 13 | 14 | 13 | 13 | 15 | 16 | 12 |
| Feels °C (?) | 13 | 13 | 11 | 10 | 10 | 12 | 12 | 11 | 11 | 12 | 10 | 10 | 9 | 13 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 12 | 13 | 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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