- 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 am Sunday 17 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
10.7° C
(Which is 1.4°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 11AM is: 4.5m 10s primary swell from a Northwest direction and 0.5m 14s secondary swell from a South direction, 0.1m 18s secondary swell from a Southwest direction (forecast issued at 04:00am May 17). The wind direction is predicted to be cross-offshore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 13ft (4.0m) | 10s |
| Afternoon (17 May) | 16ft (5.0m) | 10s |
| Evening (17 May) | 11ft (3.5m) | 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 15°C on Tue morning, min 10°C on Sun morning). Winds decreasing (strong winds from the NNW on Sun afternoon, light winds from the N by Mon morning). | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | ||||||||||||||||||||||
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 | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
NW 9 | NW 9 | NW 10 | NW 10 | NW 10 | NW 10 | NW 9 | NW 10 | NW 10 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 10 | NW 10 | WNW 14 | NW 9 | NW 9 | NW 8 | |
2511 | 2815 | 3103 | 3513 | 4095 | 4064 | 2663 | 1952 | 1864 | 1195 | 1023 | 1001 | 1198 | 1716 | 2073 | 1541 | 1176 | 1187 | 1264 | 1085 | 1028 | 1040 | 1104 | 975 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross-off | cross-off | |
High Tide | 11:04PM2.06m | 1:13PM1.30m | 11:49PM2.08m | 2:11PM1.29m | 00:38AM2.04m | 3:10PM1.29m | ||||||||||||||||||
Low Tide | 6:19AM-0.58m | 5:38PM0.70m | 7:10AM-0.61m | 6:29PM0.76m | 8:04AM-0.58m | 7:26PM0.80m | ||||||||||||||||||
 | |  | | | | | | | | | | | | | | | | | | | | | | |
 | — | 6:00 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:22 | — | — | — | — | — | — | — | 8:23 | — | — | — | — | — | — | — | 8:24 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 9 | 10 | 11 | 13 | 14 | 13 | 11 | 11 | 10 | 12 | 14 | 13 | 13 | 13 | 11 | 10 | 10 | 12 | 15 | 14 | 13 | 12 | 11 |
2 | 1 | 1 | 1 | 2 | 4 | 6 | 7 | 7 | 7 | 9 | 9 | 7 | 7 | 8 | 8 | 8 | 7 | 9 | 11 | 10 | 9 | 10 | 9 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | S 14 | S 14 | SSW 14 | SSW 13 | SSW 13 | NW 10 | NW 10 | NW 10 | SSW 13 | WNW 18 | WNW 18 | WNW 16 | WNW 16 | WNW 16 | NW 9 | NW 10 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 |
 kJ | 165 | 165 | 120 | 106 | 101 | 62 | 60 | 60 | 1537 | 1195 | 1023 | 34 | 124 | 207 | 452 | 683 | 945 | 1187 | 1264 | 886 | 1028 | 779 | 875 | 640 |
Swell 2 Height (m) Direction Period (s) | S 20 | S 20 | S 20 | SW 18 | SW 18 | SW 18 | S 18 | S 18 | SSW 13 | SSW 13 | SSW 13 | WNW 19 | SSW 13 | S 16 | S 16 | SW 17 | SW 17 | WNW 15 | WNW 14 | S 15 | S 15 | SW 16 | SW 16 | SW 16 |
| kJ | 7 | 7 | 7 | 12 | 12 | 12 | 25 | 25 | 59 | 59 | 58 | 72 | 34 | 46 | 46 | 47 | 45 | 829 | 796 | 70 | 69 | 69 | 96 | 69 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 19 | — | S 18 | SW 18 | SW 18 | SW 18 | SSW 18 | SW 18 | S 17 | S 16 | NW 14 | SW 17 | S 16 | S 16 | SW 17 | SW 16 | SW 16 | SW 16 | S 15 | S 15 | S 15 |
| kJ | — | — | — | 7 | — | 6 | 12 | 12 | 13 | 31 | 50 | 49 | 46 | 49 | 44 | 46 | 45 | 43 | 42 | 69 | 69 | 39 | 39 | 38 |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 9 | NW 10 | NW 10 | NW 10 | NW 10 | NW 9 | NW 10 | NW 10 | — | NNW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | — | — | NW 10 | NW 9 | NW 9 | NW 9 | NW 8 |
| kJ | 2511 | 2815 | 3103 | 3513 | 4095 | 4064 | 2663 | 1952 | 1864 | — | 508 | 1001 | 1198 | 1716 | 2073 | 1541 | 1176 | — | — | 1085 | 939 | 1040 | 1104 | 975 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 303 | 202 | 100 | 202 | 303 | 304 | 304 | 0 | 0 | 0 | 0 | 97 | 303 | 303 | 100 | 0 | 0 | 0 | 0 | 129 | 183 | 304 | 0 | 0 |
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