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 3 am Tuesday 16 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
13.1° C
(Which is slightly warmer than usual)How big are the waves at Navarro Rivermouth today?
The current surf forecast for Navarro Rivermouth at 11AM is: 2.3m 12s primary swell from a West direction and 0.6m 14s secondary swell from a Northwest direction (forecast issued at 03:00am December 16). The wind direction is predicted to be cross-shore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 8ft (2.4m) | 12s |
| Afternoon (16 Dec) | 7ft (2.2m) | 12s |
| Evening (16 Dec) | 7ft (2.1m) | 12s |
Table - waves today at Navarro Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1248 | 1539 | 1652 | 1610 | 1447 | 1321 | 1204 | 1236 | 1236 | 1236 | 1369 | 1367 | 1227 | 988 | 865 | 1213 | 1132 | 1280 | 757 | 577 | 577 | 826 | 564 | 1051 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- off | cross- off | cross | cross- off | cross | cross | cross | cross- on | on | cross- on | cross | cross- on | glass | glass | glass | glass | cross- off | cross- off | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:58AM 1.80 | 10:18PM 1.28 | 8:31AM 1.81 | 11:03PM 1.32 | 9:04AM 1.82 | |||||||||||||||||||
Low Tide / height (m) | 1:52AM 0.85 | 3:15PM -0.04 | 2:36AM 0.93 | 3:50PM -0.12 | 3:18AM 0.99 | 4:24PM -0.18 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:26 | - | - | - | - | - | - | - | 7:28 | - | - | - | - | - | - | - | 7:28 | - | - | - | - |
| Sunset | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:53 | - | - |
 | |  |  | |  | | | | |  |  | |  |  | | | | |  | | | | | |
Rain (mm) | - | - | 1 | 9 | 6 | 2 | 1 | 1 | 2 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 12 | 11 | 10 | 10 | 10 | 11 | 13 | 13 | 14 | 14 | 14 | 13 |
| Feels °C (?) | 15 | 17 | 17 | 15 | 16 | 16 | 13 | 13 | 13 | 12 | 14 | 13 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 12 | 12 | 13 | 12 |
- 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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