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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 10 pm 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
9.9° C
(Which is 2.1°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 6AM is: 2.4m 9s primary swell from a Northwest direction and 0.4m 13s secondary swell from a South-southwest direction (forecast issued at 10:00pm May 17). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 7.5ft (2.3m) | 9s |
| Afternoon (18 May) | 8ft (2.5m) | 9s |
| Evening (18 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 14°C on Tue morning, min 10°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wednesday 20 | |||||||||||||||||||||
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 | 2 PM | 5 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
NW 9 | NW 10 | NW 10 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 10 | NW 9 | NW 9 | NW 9 | NW 8 | WNW 13 | WNW 13 | NW 9 | NW 9 | NW 9 | NW 9 | |
2476 | 1786 | 1520 | 1062 | 924 | 816 | 939 | 1341 | 1752 | 1341 | 984 | 1176 | 1062 | 1057 | 1052 | 1072 | 1220 | 903 | 958 | 862 | 1124 | 780 | 987 | 1759 | |
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 | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | |
High Tide | 11:49PM2.08m | 2:11PM1.29m | 00:38AM2.04m | 3:10PM1.29m | 1:31AM1.93m | 4:11PM1.30m | ||||||||||||||||||
Low Tide | 5:38PM0.70m | 7:10AM-0.61m | 6:29PM0.76m | 8:04AM-0.58m | 7:26PM0.80m | 8:59AM-0.48m | ||||||||||||||||||
 |  | | | | | | | | | | | | | | | | |  | | |  | | | |
 | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — |
 | 8:22 | — | — | — | — | — | — | — | 8:23 | — | — | — | — | — | — | — | 8:24 | — | — | — | — | — | — | 8:25 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 12 | 11 | 10 | 11 | 13 | 13 | 12 | 13 | 11 | 10 | 10 | 12 | 14 | 13 | 12 | 12 | 11 | 10 | 10 | 11 | 13 | 12 | 12 |
7 | 9 | 8 | 6 | 7 | 7 | 8 | 6 | 9 | 8 | 8 | 7 | 9 | 10 | 9 | 8 | 9 | 9 | 7 | 8 | 9 | 9 | 7 | 8 | |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | NW 10 | NW 9 | NW 9 | SSW 13 | WNW 18 | WNW 18 | WNW 16 | WNW 16 | WNW 16 | NW 9 | NW 9 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | NW 9 | WNW 12 | WNW 12 | WNW 12 |
 kJ | 60 | 60 | 1278 | 1062 | 924 | 58 | 124 | 273 | 452 | 683 | 945 | 995 | 1062 | 1057 | 862 | 779 | 734 | 640 | 958 | 862 | 1124 | 616 | 595 | 436 |
Swell 2 Height (m) Direction Period (s) | 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 | SW 16 | S 14 | SW 21 | SW 21 | SW 16 | SW 16 |
| kJ | 25 | 25 | 59 | 59 | 58 | 72 | 34 | 81 | 46 | 47 | 45 | 829 | 796 | 70 | 69 | 69 | 69 | 69 | 69 | 65 | 224 | 224 | 90 | 89 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | SSW 18 | SW 18 | S 16 | S 16 | SSW 13 | SW 17 | S 16 | S 16 | SW 17 | S 16 | SW 16 | SW 16 | S 15 | S 15 | S 15 | S 15 | SW 16 | S 14 | S 14 | S 14 | S 14 |
| kJ | 12 | 12 | 13 | 32 | 50 | 21 | 46 | 33 | 44 | 46 | 45 | 43 | 42 | 69 | 69 | 39 | 39 | 38 | 38 | 67 | 63 | 61 | 59 | 58 |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 10 | NW 10 | — | — | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | NW 9 | — | NW 10 | NW 9 | NW 9 | NW 9 | NW 8 | NW 8 | NW 8 | — | NW 9 | NW 9 | NW 9 |
| kJ | 2476 | 1786 | 1520 | — | — | 816 | 939 | 1341 | 1752 | 1341 | 984 | 1176 | — | 964 | 1052 | 1072 | 1220 | 903 | 645 | 567 | — | 780 | 987 | 1759 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 305 | 0 | 0 | 0 | 0 | 100 | 303 | 304 | 100 | 0 | 0 | 0 | 0 | 129 | 183 | 303 | 0 | 0 | 0 | 0 | 0 | 155 | 160 | 129 |
Best forecast wave conditions in Mendocino County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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