- Forecast
- Maps
- Live
- Weather State
- Spot Information
Big River Surf Forecast
/ CAL – Mendocino County (14 breaks) / California (404 breaks) /
Surf Forecasts:
Big River surfForecast / CAL – Mendocino County / USA
48hr Weather and Surf, issued 10 am Saturday 18 Oct 2025 PDT
How big are the waves at Big River today?
The current surf forecast for Big River at 2PM is: 3.0m 16s primary swell from a Northwest direction and 1.4m 8s secondary swell from a Northwest direction (forecast issued at 10:00am October 18). The wind direction is predicted to be cross-onshore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Oct) | 10ft (3.0m) | 16s |
| Afternoon (18 Oct) | 10ft (3.0m) | 16s |
| Evening (18 Oct) | 8ft (2.5m) | 15s |
Table - waves today at Big River. (Swell directed towards the surf break)
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3512 | 4703 | 3832 | 3689 | 3116 | 2612 | 2667 | 2350 | 1922 | 1408 | 1011 | 905 | 3018 | 6508 | 9418 | 8673 | 6656 | 5918 | 4207 | 3449 | 3105 | 2613 | 2244 | 1685 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- on | glass | glass | glass | glass | glass | cross- off | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross- off | glass | cross- off | cross- off | cross- off |
High Tide / height (m) | 10:05AM 1.67 | 10:16PM 1.50 | 10:31AM 1.73 | 11:04PM 1.47 | 10:55AM 1.76 | 11:49PM 1.43 | ||||||||||||||||||
Low Tide / height (m) | 4:11PM 0.37 | 4:09AM 0.36 | 4:51PM 0.23 | 4:39AM 0.48 | 5:27PM 0.12 | |||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| Sunrise | 7:26 | - | - | - | - | - | - | - | 7:28 | - | - | - | - | - | - | - | 7:28 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:30 | - | - | - | - | - | - | - | 6:29 | - | - | - | - |
 | | | |  | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 16 | 15 | 16 | 14 | 14 | 14 | 13 | 13 | 15 | 14 | 14 | 14 | 12 | 11 | 11 | 11 | 16 | 15 | 15 | 15 | 16 | 17 | 16 |
| Feels °C (?) | 12 | 15 | 14 | 15 | 13 | 13 | 13 | 12 | 11 | 12 | 10 | 9 | 10 | 9 | 9 | 9 | 8 | 13 | 12 | 13 | 14 | 13 | 14 | 13 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for CAL - Mendocino County
Continuing clean conditions at Big River (calm at Mendocino 3 km from Big River). 2.5m 15s groundswell from the NW with a 1.2m 8s swell, also from the NW. 2 swells combining to make bigger set waves.
Actual: 43 min ago
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big River surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest