
Surf Forecasts:
Big River surf forecast from 4 Oct 2026:
- Best quality surf: Saturday 10 Oct, 8PM (local time) - 13ft (4.0m), 10s period, NW swell with cross-offshore winds.
- Most powerful swell: Sunday 11 Oct, 5AM (local time) - 13ft (4.0m), 11s period, NW swell with 3,808 kJ wave energy.
- Next surfable swell (1★+): Sunday 4 Oct, 8PM (local time) - 2.5ft (0.7m), 14s period with SW swell.
Best Forecast Surf Conditions for Big River this week:
The surf forecast for Big River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Oct 04) at 8PM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 1.1m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Big River in the next 16 days are 4.0m 11s and forecast to arrive on Sunday (Oct 11) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 4th Oct) | 2.5ft (0.7m) 14s |
| Best Surf | 8PM (Sat 10th Oct) | 13ft (4.0m) 10s |
| Most Powerful | 5AM (Sun 11th Oct) | 13ft (4.0m) 11s |
Table - best surf conditions forecast for Big River over the next 16 days.
Short Range ForecastMostly dry. Warm (max 20°C on Sun morning, min 14°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Fri morning, min 15°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 4 | Monday 5 | Tuesday 6 | Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | SW 16 | NW 7 | SSW 14 | SSW 14 | SSW 14 | WNW 12 | WNW 11 | NW 8 | SSW 19 | SSW 19 | SSW 18 | SSW 18 | NW 14 | NW 13 | NW 13 | NW 12 | NW 10 | NW 9 | NW 10 | NW 10 | NW 11 |
Wave Graph | |||||||||||||||||||||
255 | 152 | 261 | 268 | 264 | 211 | 183 | 181 | 251 | 315 | 404 | 541 | 1459 | 1299 | 946 | 761 | 636 | 1457 | 2096 | 3146 | 3515 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross | cross | cross-off | cross | cross | glassy | cross-on | glassy | glassy | on | glassy | off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 6:03PM1.70m | 8:35AM1.42m | 7:23PM1.69m | 9:14AM1.52m | 8:33PM1.68m | 9:48AM1.63m | 9:34PM1.66m | 10:20AM1.73m | 10:30PM1.63m | 10:50AM1.80m | 11:21PM1.58m | 11:19AM1.85m | 00:12AM1.51m | ||||||||
Low Tide | 12:07PM0.97m | 1:29AM-0.03m | 1:31PM0.84m | 2:24AM-0.00m | 2:38PM0.66m | 3:11AM0.05m | 3:33PM0.47m | 3:52AM0.13m | 4:22PM0.30m | 4:29AM0.25m | 5:07PM0.15m | 5:03AM0.38m | 5:49PM0.04m | ||||||||
7:13 | — | — | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:16 | — | — | 7:18 | — | — | 7:18 | — | — | |
— | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:44 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 18 | 17 | 20 | 16 | 16 | 18 | 17 | 17 | 18 | 16 | 16 | 19 | 18 | 20 | 24 | 19 | 17 | 18 | 17 | 14 |
Feels °C | 18 | 16 | 16 | 18 | 14 | 15 | 16 | 15 | 16 | 16 | 15 | 15 | 17 | 16 | 17 | 22 | 17 | 16 | 16 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NW 14 | NW 13 | NW 13 | NW 12 | NW 10 | SSW 15 | SSW 14 | SSW 14 | WNW 24 |
156 | 152 | 123 | 127 | 109 | 189 | 182 | 181 | 205 | 171 | 176 | 138 | 1459 | 1299 | 946 | 761 | 636 | 382 | 268 | 264 | 1354 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | WNW 11 | WNW 11 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 20 | SSW 19 | WNW 26 | SSW 18 |
255 | 146 | 261 | 268 | 264 | 211 | 183 | 180 | 116 | 247 | 238 | 541 | 475 | 545 | 683 | 506 | 468 | 395 | 289 | 592 | 589 | |
Swell 3 Height (m) Direction Period (s) | S 11 | SW 14 | WNW 13 | WNW 12 | WNW 12 | SSW 14 | SSW 13 | SSW 13 | SSW 19 | SSW 19 | SSW 18 | WNW 11 | SSW 12 | SSW 12 | SSE 11 | SSW 21 | S 11 | W 19 | WNW 19 | SSW 18 | WNW 17 |
21 | 89 | 16 | 99 | 161 | 166 | 154 | 151 | 251 | 315 | 404 | 196 | 56 | 56 | 43 | 359 | 66 | 188 | 197 | 249 | 168 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 9 | NW 10 | NW 10 | NW 11 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1457 | 2096 | 3146 | 3515 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 57 | 39 | 0 | 100 | 23 | 0 | 111 | 29 | 0 | 57 | 0 | 0 | 13 | 0 | 0 | 39 | 29 | 0 | 111 | 160 | 0 |
Best forecast wave conditions in Mendocino County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Big River Surf forecast
The above surf forecast table for Big River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big River can be found by selecting the local surf guide option on the grey menu. Our Big River surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Big River) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Big River may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Big River is 54 km (34 miles) from Ukiah. If you plan a vacation in Mendocino County, look for hotels and other accommodation in Ukiah. Ukiah has rooms for a wide range of budgets as well as car hire and transport links.










