- 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 4 pm Wednesday 20 May 2026 PDTForecast 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
9.3° C
(Which is 2.8°C colder than average for this time of year)How big are the waves at Big River today?
The current surf forecast for Big River at 7PM is: 3.0m 9s primary swell from a Northwest direction and 1.3m 12s secondary swell from a West-northwest direction, 0.5m 16s secondary swell from a Southwest direction (forecast issued at 04:00pm May 20). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | - | - |
| Afternoon (20 May) | 7ft (2.2m) | 9s |
| Evening (20 May) | 10ft (3.0m) | 9s |
Table - waves today at Big River. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 13°C on Thu morning, min 9°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 8 AM | 11 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 11 | NW 11 | NW 10 | NW 9 | NW 9 | WNW 11 | WNW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | |
611 | 931 | 1342 | 1215 | 1224 | 602 | 459 | 433 | 672 | 626 | 764 | 573 | 530 | 964 | 1111 | 1178 | 1026 | 869 | 850 | 718 | 669 | 516 | 358 | 284 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | glassy | glassy | glassy | glassy | cross-on | on | on | cross-on | glassy | glassy | cross-on | cross-on | cross-on | on | |
High Tide | 4:11PM1.30m | 2:30AM1.78m | 5:11PM1.34m | 3:36AM1.59m | 6:06PM1.40m | 4:52AM1.41m | ||||||||||||||||||
Low Tide | 8:33PM0.83m | 9:56AM-0.36m | 9:53PM0.81m | 10:52AM-0.21m | 11:21PM0.73m | |||||||||||||||||||
 | |  |  | | | | | | | |  | | | | | | | | | | | | | |
 | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:54 | — | — |
 | — | — | 8:25 | — | — | — | — | — | — | — | 8:25 | — | — | — | — | — | — | — | 8:27 | — | — | — | — | 8:28 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 12 | 12 | 11 | 10 | 9 | 9 | 10 | 13 | 13 | 13 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 10 | 9 | 9 | 9 | 10 | 10 |
9 | 9 | 8 | 7 | 6 | 6 | 8 | 11 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 11 | 9 | 8 | 7 | 8 | 9 | 7 | |
Swell 1 Height (m) Direction Period (s) | WNW 12 | WNW 12 | WNW 12 | WNW 12 | SW 15 | WNW 11 | NW 8 | NW 8 | NW 10 | NW 9 | NW 9 | NW 9 | NNW 9 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 |
 kJ | 500 | 429 | 421 | 407 | 112 | 396 | 459 | 433 | 672 | 626 | 764 | 551 | 519 | 964 | 1111 | 1178 | 1026 | 869 | 850 | 718 | 669 | 516 | 358 | 284 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | S 14 | SW 19 | NW 11 | NW 11 | NW 9 | WNW 11 | NW 10 | WNW 11 | WNW 10 | SW 17 | SW 18 | SW 18 | SW 18 | SW 18 | SW 15 | NW 11 | NW 11 | NW 10 | WNW 10 | WNW 10 |
| kJ | 90 | 89 | 122 | 116 | 57 | 131 | 423 | 423 | 307 | 300 | 248 | 573 | 530 | 147 | 154 | 154 | 154 | 154 | 104 | 115 | 115 | 157 | 130 | 125 |
Swell 3 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | SW 19 | SW 19 | SW 19 | SW 15 | SW 15 | SW 15 | SW 15 | S 13 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 18 | SW 14 | SW 15 | SSW 15 | SSW 16 | SW 16 |
| kJ | 59 | 58 | 57 | 57 | 57 | 56 | 303 | 303 | 184 | 113 | 116 | 116 | 115 | 51 | 109 | 109 | 109 | 109 | 121 | 74 | 109 | 150 | 162 | 201 |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 611 | 931 | 1342 | 1215 | 1224 | 602 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 160 | 29 | 0 | 0 | 0 | 0 | 0 | 111 | 160 | 23 | 0 | 0 | 0 | 0 | 19 | 57 | 57 | 57 | 0 | 0 | 13 | 19 | 19 | 85 |
Best forecast wave conditions in Mendocino County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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