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Surf Forecasts:
Big River surfForecast / CAL – Mendocino County / USA
48hr Weather and Surf, issued 9 am Saturday 06 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Big River surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big River sea temperature is
13.2° C
(Which is slightly warmer than usual)How big are the waves at Big River today?
The current surf forecast for Big River at 1PM is: 1.5m 13s primary swell from a West-northwest direction and 0.4m 15s secondary swell from a South-southwest direction, 1.2m 8s secondary swell from a Northwest direction (forecast issued at 09:00am December 06). The wind direction is predicted to be cross-shore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | 4.5ft (1.3m) | 14s |
| Afternoon (06 Dec) | 5ft (1.5m) | 13s |
| Evening (06 Dec) | 6ft (1.9m) | 14s |
Table - waves today at Big River. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 06 | Sunday 07 | Monday 08 | Tue 09 | |||||||||||||||||||||
| 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 | 14 | 13 | 13 | 15 | 14 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 10 | 11 | 13 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 274 | 694 | 724 | 724 | 1344 | 1438 | 1109 | 712 | 599 | 514 | 521 | 429 | 408 | 408 | 433 | 412 | 254 | 229 | 513 | 378 | 799 | 1346 | 1494 | 1652 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- off | cross | cross- off | off | cross- off | off | cross- off | off | glass | cross | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:57AM 2.23 | 1:27AM 1.47 | 11:49AM 2.13 | 2:21AM 1.49 | 12:43PM 1.97 | 3:14AM 1.51 | ||||||||||||||||||
Low Tide / height (m) | 4:49AM 0.91 | 6:22PM -0.51 | 5:46AM 0.93 | 7:13PM -0.41 | 6:48AM 0.94 | 8:04PM -0.27 | ||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tue 09 | |||||||||||||||||||||
| Sunrise | - | 7:20 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:22 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:51 | - | - | - | - | - | - | - | 4:51 | - | - | - | - | - | - | - | 4:51 | - | - | - | - |
 |  | | |  | | | | | | | | | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 11 | 12 | 13 | 12 | 12 | 12 | 12 | 11 | 12 | 12 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 12 | 13 | 12 | 12 | 12 | 11 | 11 |
| Feels °C (?) | 10 | 11 | 10 | 9 | 10 | 10 | 10 | 9 | 10 | 10 | 11 | 11 | 12 | 11 | 11 | 9 | 9 | 11 | 10 | 9 | 10 | 11 | 10 | 10 |
- 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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