Surf Forecasts:
How big are the waves at Cape Mendocino today (18 Aug):
- Morning surf: Morning surf (18 Aug, local time) - 2.5ft (0.7m), 14s period with SSW swell.
- Afternoon surf: Afternoon surf (18 Aug, local time) - 2.5ft (0.8m), 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 Cape Mendocino at 4AM is: 0.8m 14s primary swell from a South-southwest direction and 0.4m 8s secondary swell from a West-northwest direction (forecast issued at 10:00pm August 17). An open ocean swell of 1.5m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 2.5ft (0.7m) | 14s |
| Afternoon (18 Aug) | 2.5ft (0.8m) | 15s |
| Evening (18 Aug) | 3ft (0.9m) | 16s |
Table - waves today at Cape Mendocino. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 12°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 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 |
Wave Graph  | ||||||||||||||||||
 kJ | 334 | 334 | 334 | 268 | 178 | 178 | 239 | 249 | 362 | 402 | 291 | 288 | 220 | 273 | 305 | 305 | 309 | 314 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 4:06AM1.25m | 3:55PM1.71m | 5:35AM1.14m | 4:39PM1.68m | ||||||||||||||
Low Tide | 10:12PM0.35m | 9:47AM0.67m | 11:15PM0.32m | 10:37AM0.85m | ||||||||||||||
 |  | | |  | | |  | | | |  | | | | | | | |
 | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — |
 | 8:12 | — | — | — | — | — | — | — | 8:10 | — | — | — | — | — | — | — | 8:08 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 12 | 13 | 12 | 13 | 15 | 16 | 16 | 13 | 13 | 12 | 12 | 13 | 16 | 17 | 16 | 14 | 13 |
Feels °C | 10 | 9 | 10 | 9 | 10 | 11 | 12 | 12 | 10 | 11 | 9 | 8 | 9 | 12 | 14 | 13 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | WNW 12 | WNW 12 | SSW 16 | WNW 12 | WNW 11 | WNW 11 | WNW 12 |
| kJ | 334 | 334 | 334 | 268 | 178 | 178 | 239 | 249 | 362 | 402 | 291 | 178 | 172 | 273 | 210 | 186 | 229 | 237 |
Swell 2 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 8 | WNW 8 | WNW 8 | SSW 17 | WNW 15 | WNW 15 | WNW 14 | WNW 13 | WNW 13 | SSW 16 | SSW 16 | WNW 12 | SSW 15 | SSW 15 | SSW 15 | SSW 15 |
| kJ | 24 | 23 | 22 | 22 | 22 | 100 | 42 | 84 | 111 | 102 | 137 | 288 | 220 | 213 | 305 | 305 | 309 | 314 |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | SSW 18 | SSW 18 | WNW 16 | SSW 18 | S 10 | S 10 | N 8 | SSW 13 | SSW 13 | SSW 13 | SW 20 | SW 21 | SW 21 | SW 21 | S 9 |
| kJ | 9 | 9 | 9 | 62 | 103 | 48 | 62 | 2 | 2 | 5 | 98 | 67 | 67 | 16 | 17 | 18 | 18 | 2 |
Wind waves Height (m) Direction Period (s) | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NNW 7 | NW 7 | NNW 7 | NNW 7 | NNW 8 | NNW 8 | NNW 7 | NNW 7 | NNW 7 | NNW 7 |
| kJ | 175 | 175 | 198 | 198 | 192 | 211 | 269 | 254 | 236 | 189 | 257 | 379 | 447 | 408 | 397 | 325 | 235 | 197 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 51 | 51 | 42 | 40 | 51 | 149 | 151 | 54 | 52 | 40 | 40 | 52 | 40 | 151 | 151 | 54 | 51 | 51 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||
Header Global | ||||||||||||||||||
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