Surf Forecasts:
How big are the waves at Big River today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 2.5ft (0.8m), 14s period with SSW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 3ft (0.9m), 15s period with SSW swell.
- Evening surf: Evening surf (18 Aug, local time) - 3ft (0.9m), 16s period with SSW swell.
The current surf forecast for Big River at 3AM is: 0.8m 14s primary swell from a South-southwest direction and 1.1m 7s secondary swell from a Northwest direction (forecast issued at 10:00pm August 17). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 2.5ft (0.8m) | 14s |
| Afternoon (18 Aug) | 3ft (0.9m) | 15s |
| Evening (18 Aug) | 3ft (0.9m) | 16s |
Table - waves today at Big River. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 14°C on Tue afternoon, min 11°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||||
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 |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | NW 7 | NW 8 | NW 8 | NW 8 | NW 7 | NW 7 |
Wave Graph  | ||||||||||||||||||
 kJ | 334 | 334 | 268 | 268 | 178 | 239 | 309 | 353 | 402 | 402 | 293 | 334 | 423 | 385 | 385 | 375 | 423 | 412 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross | cross | glassy | glassy | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross |
High Tide | 4:01AM1.23m | 3:53PM1.68m | 5:26AM1.11m | 4:39PM1.64m | ||||||||||||||
Low Tide | 9:52PM0.34m | 9:15AM0.63m | 10:58PM0.32m | 9:55AM0.80m | ||||||||||||||
 |  | | | | | | | |  | | |  | | | | | | |
 | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — |
 | 8:07 | — | — | — | — | — | — | — | 8:06 | — | — | — | — | — | — | — | 8:05 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 11 | 11 | 11 | 11 | 13 | 14 | 14 | 12 | 12 | 12 | 12 | 12 | 14 | 14 | 14 | 13 | 12 |
Feels °C | 11 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 11 | 10 | 11 | 11 | 12 | 11 | 11 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | NW 7 | SSW 15 | SSW 16 | NW 7 | NW 7 | SSW 16 | SSW 16 | NW 7 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | NW 7 |
| kJ | 112 | 105 | 116 | 116 | 169 | 174 | 309 | 353 | 327 | 363 | 291 | 284 | 327 | 301 | 305 | 305 | 344 | 412 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | WNW 15 | WNW 15 | SSW 16 | SSW 16 | WNW 13 | WNW 13 | SSW 14 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 |
| kJ | 334 | 334 | 268 | 268 | 178 | 239 | 45 | 84 | 402 | 402 | 102 | 154 | 217 | 172 | 169 | 210 | 183 | 186 |
Swell 3 Height (m) Direction Period (s) | WNW 9 | W 9 | WNW 8 | WNW 8 | SSW 17 | SSW 18 | NW 11 | NW 11 | WNW 14 | WNW 14 | SSW 13 | SSW 13 | WNW 12 | SW 20 | SW 21 | SW 21 | S 9 | SSW 15 |
| kJ | 42 | 39 | 23 | 35 | 100 | 63 | 5 | 5 | 82 | 107 | 65 | 65 | 175 | 16 | 18 | 18 | 2 | 318 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NW 7 | NW 7 | NW 7 | — | — | NW 7 | NW 7 | NW 7 | NW 8 | NW 8 | NW 8 | NW 7 | — |
| kJ | — | — | — | — | — | 233 | 218 | 293 | — | — | 293 | 334 | 423 | 385 | 385 | 375 | 423 | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 183 | 277 | 39 | 0 | 0 | 0 | 0 | 0 | 160 | 202 | 82 | 19 | 13 |
Best forecast wave conditions in Mendocino County | ||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||
Header Global | ||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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