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Cape Mendocino Surf Forecast
/ CAL – Humboldt (25 breaks) / California (404 breaks) /
Surf Forecasts:
Cape Mendocino surfForecast / CAL – Humboldt / USA
48hr Weather and Surf, issued 10 pm Sunday 17 May 2026 PDTForecast update in hr min s Forecast update imminent
Cape Mendocino surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cape Mendocino sea temperature is
9.6° C
(Which is 2.4°C colder than average for this time of year)How big are the waves at Cape Mendocino today?
The current surf forecast for Cape Mendocino at 5AM is: 2.2m 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). An open ocean swell of 1.4m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 2.5ft (0.8m) | 11s |
| Afternoon (18 May) | 2.5ft (0.7m) | 17s |
| Evening (18 May) | 3.5ft (1.1m) | 16s |
Table - waves today at Cape Mendocino. (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 afternoon, min 9°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
WNW 11 | WNW 11 | WNW 11 | NW 9 | WNW 11 | NW 8 | NW 8 | WNW 16 | WNW 16 | WNW 16 | WNW 15 | WNW 15 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | |
458 | 661 | 499 | 798 | 170 | 682 | 666 | 343 | 532 | 778 | 1162 | 911 | 996 | 1143 | 957 | 987 | 862 | 812 | 1060 | 1207 | 871 | 384 | 347 | 429 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | |
High Tide | 11:54PM2.02m | 2:23PM1.39m | 00:44AM1.98m | 3:20PM1.39m | 1:37AM1.89m | 4:18PM1.41m | ||||||||||||||||||
Low Tide | 6:12PM0.79m | 7:23AM-0.61m | 7:05PM0.85m | 8:16AM-0.57m | 8:05PM0.89m | 9:11AM-0.47m | ||||||||||||||||||
 |  | | | | | | | | | | | | | | |  |  |  | | | | | | |
 | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — |
 | 8:28 | — | — | — | — | — | — | — | 8:29 | — | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | 8:30 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 10 | 9 | 9 | 11 | 13 | 13 | 13 | 12 | 10 | 10 | 9 | 11 | 13 | 14 | 14 | 12 | 11 | 11 | 10 | 11 | 13 | 13 | 12 |
4 | 5 | 3 | 4 | 6 | 7 | 7 | 7 | 6 | 5 | 4 | 2 | 5 | 7 | 8 | 9 | 7 | 6 | 5 | 3 | 4 | 6 | 6 | 5 | |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 11 | WNW 11 | NW 9 | WNW 11 | WNW 11 | WNW 18 | WNW 16 | WNW 16 | WNW 16 | WNW 15 | WNW 15 | NW 10 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 |
 kJ | 458 | 661 | 499 | 798 | 170 | 107 | 178 | 343 | 532 | 778 | 1162 | 911 | 480 | 1143 | 957 | 987 | 862 | 812 | 1060 | 1207 | 871 | 384 | 347 | 429 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | NW 18 | SSW 13 | S 16 | S 16 | WNW 12 | SW 17 | WNW 10 | WNW 14 | SW 16 | S 15 | NW 8 | SW 16 | SW 16 | SW 16 | SW 16 | SW 21 | SW 21 | SW 16 | SW 16 |
| kJ | 62 | 60 | 60 | 59 | 59 | 82 | 34 | 46 | 46 | 90 | 76 | 327 | 996 | 69 | 71 | 196 | 96 | 96 | 95 | 68 | 162 | 224 | 90 | 89 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 18 | SW 18 | SSW 18 | WNW 19 | SSW 13 | NW 14 | SSW 13 | WNW 13 | SW 17 | S 16 | SW 17 | SW 16 | S 16 | SW 16 | SW 16 | S 15 | S 15 | S 15 | S 15 | SW 16 | SW 16 | S 14 | S 14 |
| kJ | 12 | 31 | 13 | 32 | 37 | 58 | 52 | 34 | 35 | 74 | 46 | 70 | 69 | 42 | 69 | 69 | 39 | 39 | 38 | 38 | 66 | 65 | 61 | 60 |
Wind waves Height (m) Direction Period (s) | NNW 9 | NNW 9 | NNW 9 | N 8 | NNW 9 | NW 8 | NW 8 | NNW 8 | NW 8 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | N 7 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 |
| kJ | 1482 | 1205 | 998 | 252 | 732 | 682 | 666 | 750 | 860 | 1106 | 1133 | 782 | 575 | 790 | 590 | 251 | 419 | 471 | 489 | 599 | 618 | 1006 | 1031 | 1020 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 438 | 59 | 54 | 40 | 40 | 234 | 436 | 437 | 234 | 59 | 59 | 59 | 54 | 262 | 316 | 436 | 109 | 59 | 52 | 51 | 54 | 289 | 294 | 262 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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