Surf Forecasts:
How big are the waves at Cape Mendocino today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 2ft (0.6m), 20s period with SW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 2ft (0.6m), 19s period with SW swell.
- Evening surf: Evening surf (18 Sep, local time) - 2ft (0.6m), 19s period with SW swell.
The current surf forecast for Cape Mendocino at 4AM is: 1.4m 8s primary swell from a Northwest direction and 0.5m 15s secondary swell from a South-southwest direction (forecast issued at 10:00pm September 17). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 2ft (0.6m) | 20s |
| Afternoon (18 Sep) | 2ft (0.6m) | 19s |
| Evening (18 Sep) | 2ft (0.6m) | 19s |
Table - waves today at Cape Mendocino. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 16°C on Fri afternoon, min 12°C on Fri night). Winds increasing (calm on Thu night, fresh winds from the NNW by Sun afternoon). | ||||||||||||||||||
Thu 17 | Friday 18 | Saturday 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) | NW 8 | NW 8 | NW 8 | NW 8 | SW 20 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 |
Wave Graph  | ||||||||||||||||||
 kJ | 299 | 273 | 273 | 256 | 239 | 303 | 303 | 303 | 369 | 303 | 303 | 234 | 217 | 258 | 375 | 375 | 375 | 437 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | glassy | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross-off |
High Tide | 7:07AM1.20m | 4:38PM1.55m | 8:20AM1.26m | 5:46PM1.53m | ||||||||||||||
Low Tide | 11:28PM0.24m | 11:25AM1.09m | 00:39AM0.24m | 12:52PM1.09m | ||||||||||||||
 |  | | |  | |  | | | | | | | | | | | | |
 | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 7:21 | — | — | — | — | — | — | — | 7:20 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 14 | 13 | 13 | 15 | 16 | 16 | 13 | 12 | 12 | 12 | 12 | 15 | 16 | 15 | 13 | 12 |
Feels °C | 15 | 15 | 14 | 12 | 11 | 13 | 12 | 12 | 10 | 9 | 9 | 9 | 9 | 11 | 12 | 11 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 8 | NW 8 | NW 8 | NW 8 | NNW 8 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 18 |
| kJ | 299 | 273 | 273 | 256 | 227 | 235 | 303 | 303 | 369 | 303 | 303 | 234 | 217 | 258 | 375 | 375 | 375 | 437 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SW 19 | S 15 | SSW 14 | S 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | NW 10 | SSW 13 | SSW 13 | NW 9 | SSW 13 |
| kJ | 198 | 196 | 137 | 126 | 169 | 303 | 109 | 120 | 109 | 116 | 111 | 66 | 61 | 37 | 60 | 60 | 40 | 58 |
Swell 3 Height (m) Direction Period (s) | SW 21 | SW 21 | SW 21 | SW 20 | SW 20 | SSW 15 | WSW 14 | S 9 | SW 13 | S 9 | S 11 | WNW 10 | NW 11 | SSW 13 | SW 13 | SW 13 | SSW 13 | S 10 |
| kJ | 162 | 162 | 160 | 137 | 239 | 167 | 19 | 6 | 28 | 6 | 9 | 9 | 41 | 60 | 26 | 26 | 59 | 8 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNW 3 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 5 | NNW 5 | NNW 6 | NNW 6 |
| kJ | — | — | — | — | — | 2 | 230 | 237 | 192 | 188 | 188 | 168 | 170 | 191 | 116 | 113 | 111 | 115 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 21 | 0 | 0 | 0 | 0 | 151 | 211 | 436 | 54 | 51 | 51 | 51 | 40 | 151 | 262 | 437 | 51 | 51 |
Best forecast wave conditions in Humboldt 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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