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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 Sunday 31 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 1.7°C colder than average for this time of year)How big are the waves at Big River today (31 May):
- Morning surf: Morning surf (31 May, local time) - 10ft (3.0m), 9s period with NW swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 10ft (3.0m), 9s period with NW swell.
- Evening surf: Evening surf (31 May, local time) - 10ft (3.0m), 9s period with NW swell.
The current surf forecast for Big River at 10AM is: 3.0m 9s primary swell from a Northwest direction and 2.5m 10s secondary swell from a Northwest direction, 0.7m 21s secondary swell from a South-southwest direction (forecast issued at 04:00am May 31). The wind direction is predicted to be cross-shore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 10ft (3.0m) | 9s |
| Afternoon (31 May) | 10ft (3.0m) | 9s |
| Evening (31 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 Mon morning, min 8°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 31 | Monday 1 | Tuesday 2 | ||||||||||||||||||||||
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 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | |
836 | 694 | 1357 | 1386 | 1254 | 1426 | 1606 | 1836 | 616 | 904 | 866 | 623 | 503 | 659 | 759 | 759 | 742 | 725 | 692 | 559 | 545 | 539 | 532 | 525 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross | cross | glassy | cross-off | glassy | cross | cross | cross-off | cross | cross-off | |
High Tide | 1:18PM1.18m | 11:26PM1.75m | 1:59PM1.19m | 00:01AM1.73m | 2:41PM1.19m | |||||||||||||||||||
Low Tide | 6:14AM-0.25m | 5:21PM0.85m | 6:50AM-0.25m | 5:57PM0.87m | 7:28AM-0.23m | 6:36PM0.90m | ||||||||||||||||||
 | |  | | | | | | | | |  | | | | | | | | | |  | |  | |
 | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:34 | — | — | — | — | — | — | — | 8:35 | — | — | — | — | — | — | — | 8:36 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 8 | 7 | 8 | 11 | 12 | 12 | 11 | 11 | 10 | 10 | 12 | 13 | 12 | 12 | 11 | 11 | 10 | 10 | 12 | 12 | 12 | 11 | 11 | 10 |
4 | 4 | 6 | 7 | 8 | 8 | 8 | 9 | 8 | 8 | 10 | 11 | 9 | 9 | 9 | 9 | 9 | 8 | 11 | 10 | 9 | 8 | 9 | 8 | |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 11 | NW 10 | NW 10 | SSW 21 | SSW 20 | SSW 20 | NW 9 | NW 10 | NW 9 | NW 9 | WNW 10 | NW 10 | NW 10 | NW 10 | NW 9 | WNW 9 | SSW 17 | NW 9 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 |
 kJ | 400 | 433 | 1150 | 1219 | 483 | 500 | 603 | 1496 | 616 | 693 | 563 | 511 | 480 | 480 | 486 | 433 | 280 | 725 | 349 | 559 | 545 | 539 | 532 | 525 |
Swell 2 Height (m) Direction Period (s) | SSW 22 | SSW 22 | SSW 21 | SSW 21 | SSW 16 | SW 16 | SSW 16 | SSW 20 | SSW 20 | WNW 11 | WNW 10 | NNW 10 | NNW 9 | NNW 9 | SSW 18 | SSW 18 | NNW 8 | NNW 8 | SSW 17 | NNW 8 | S 12 | SW 22 | WNW 9 | SSW 21 |
| kJ | 185 | 263 | 260 | 511 | 104 | 66 | 102 | 596 | 485 | 375 | 374 | 305 | 237 | 176 | 759 | 759 | 138 | 69 | 692 | 33 | 11 | 18 | 42 | 45 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 18 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 16 | SSW 16 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | SSW 18 | NNW 9 | NNW 8 | SSW 17 | S 14 | NNW 8 | S 14 | S 15 | S 14 | SSW 21 | S 14 |
| kJ | 69 | 67 | 123 | 32 | 32 | 32 | 33 | 104 | 153 | 904 | 866 | 623 | 503 | 659 | 84 | 103 | 742 | 16 | 45 | 16 | 4 | 4 | 45 | 16 |
Wind waves Height (m) Direction Period (s) | NW 8 | NW 8 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | — | — | — | — | — | — | — | NNW 8 | NW 9 | — | NW 9 | NW 8 | NW 7 | NW 7 | NW 7 |
| kJ | 836 | 694 | 1357 | 1386 | 1254 | 1426 | 1606 | 1836 | 599 | — | — | — | — | — | — | — | 237 | 323 | — | 316 | 235 | 217 | 189 | 255 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 59 | 0 | 0 | 129 | 129 | 304 | 0 | 0 | 0 | 0 | 29 | 111 | 160 | 59 | 19 | 19 | 0 | 0 | 0 | 190 | 277 | 277 | 19 | 0 |
Best forecast wave conditions in Mendocino County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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