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Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Big River surfForecast / CAL – Mendocino County / USA
48hr Weather and Surf, issued 3 pm Friday 19 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
13.3° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Big River today?
The current surf forecast for Big River at 6PM is: 2.3m 11s primary swell from a West direction and 1.6m 13s secondary swell from a Northwest direction (forecast issued at 03:00pm December 19). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Dec) | - | - |
| Afternoon (19 Dec) | 8ft (2.5m) | 10s |
| Evening (19 Dec) | 7ft (2.1m) | 11s |
Table - waves today at Big River. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||||||
| 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) (?) | 11 | 10 | 11 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2195 | 1250 | 1109 | 1037 | 1150 | 1188 | 1169 | 1013 | 997 | 963 | 770 | 743 | 640 | 573 | 534 | 466 | 466 | 457 | 496 | 441 | 391 | 350 | 391 | 478 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- off | cross- off | cross- off | cross- off | glass | glass | glass | glass | on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | glass | glass | glass | glass | glass |
High Tide / height (m) | 12:17AM 1.34 | 10:16AM 1.89 | 12:54AM 1.36 | 10:52AM 1.88 | 1:30AM 1.38 | |||||||||||||||||||
Low Tide / height (m) | 5:06PM -0.15 | 4:14AM 1.02 | 5:42PM -0.17 | 4:54AM 1.02 | 6:18PM -0.16 | 5:37AM 1.03 | ||||||||||||||||||
Friday 19 | Saturday 20 | Sunday 21 | Monday 22 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:30 | - | - | - | - | - | - | - | 7:31 | - | - | - | - | - | - | - | 7:31 |
| Sunset | - | 4:53 | - | - | - | - | - | - | - | 4:53 | - | - | - | - | - | - | - | 4:54 | - | - | - | - | - | - |
 |  |  | | | | |  | | |  |  |  | | | | | | | |  | | | | |
Rain (mm) | 11 | 2 | - | - | - | - | - | - | - | - | 3 | 12 | 9 | 6 | 5 | 3 | 1 | - | - | - | - | - | - | - |
| Temp. °C | 14 | 13 | 12 | 11 | 11 | 10 | 10 | 10 | 13 | 12 | 11 | 13 | 14 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 11 | 11 | 11 | 11 |
| Feels °C (?) | 12 | 12 | 10 | 8 | 8 | 8 | 9 | 9 | 11 | 9 | 9 | 9 | 10 | 11 | 11 | 11 | 10 | 9 | 11 | 11 | 10 | 10 | 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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