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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 Tuesday 21 Apr 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
11.5° C
(Which is normal for this time of year)How big are the waves at Big River today?
The current surf forecast for Big River at 7AM is: 1.7m 11s primary swell from a West-northwest direction and 0.5m 12s secondary swell from a South-southwest direction, 0.8m 6s secondary swell from a South direction (forecast issued at 04:00am April 21). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 5.5ft (1.7m) | 11s |
| Afternoon (21 Apr) | 5ft (1.5m) | 11s |
| Evening (21 Apr) | 5ft (1.5m) | 10s |
Table - waves today at Big River. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1077 | 876 | 750 | 662 | 608 | 521 | 460 | 442 | 363 | 386 | 355 | 372 | 443 | 396 | 501 | 538 | 545 | 612 | 820 | 1127 | 888 | 528 | 444 | 344 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- on | on | cross- on | cross | glass | cross- off | cross- off | cross- off | cross- on | cross- on | cross | cross- off | cross- off | off | off | off | cross | cross | cross | cross- off | cross- off |
High Tide / height (m) | 1:46AM 1.90 | 4:25PM 1.19 | 2:41AM 1.79 | 5:41PM 1.19 | 3:48AM 1.66 | 6:49PM 1.25 | ||||||||||||||||||
Low Tide / height (m) | 9:14AM -0.39 | 8:31PM 0.82 | 10:18AM -0.31 | 9:47PM 0.87 | 11:26AM -0.23 | |||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||||||||||
| Sunrise | - | - | 6:30 | - | - | - | - | - | - | - | 6:28 | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 7:58 | - | - | - | - | - | - | - | 7:59 | - | - | - | - | - | - | - | - | 8:00 | - |
 |  |  |  | | | | |  | |  | | | | | | | | | | | | | | |
Rain (mm) | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 11 | 11 | 12 | 12 | 12 | 11 | 10 | 9 | 9 | 9 | 12 | 11 | 12 | 11 | 10 | 9 | 8 | 8 | 11 | 11 | 11 | 10 | 9 |
| Feels °C (?) | 10 | 8 | 9 | 9 | 9 | 8 | 9 | 8 | 6 | 6 | 6 | 10 | 7 | 8 | 9 | 8 | 7 | 6 | 6 | 8 | 7 | 6 | 7 | 6 |
- 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.
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