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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 4 am Monday 18 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 9AM is: 2.1m 9s primary swell from a Northwest direction (forecast issued at 04:00am May 18). An open ocean swell of 0.9m 8s is not directed at the surf break, a second open ocean swell of 1.8m 9s 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 May) | 7ft (2.1m) | 9s |
| Afternoon (18 May) | 1.5ft (0.5m) | 18s |
| Evening (18 May) | 4ft (1.2m) | 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 Mon night). Mainly fresh winds. | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
WNW 11 | NW 10 | NW 9 | NW 8 | WNW 10 | WNW 16 | WNW 16 | WNW 16 | WNW 15 | WNW 15 | WNW 14 | WNW 14 | NW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | |
499 | 692 | 711 | 682 | 178 | 343 | 539 | 1081 | 1507 | 911 | 996 | 1143 | 2952 | 987 | 958 | 1226 | 1117 | 1100 | 784 | 384 | 371 | 421 | 575 | 466 | |
Wind (km/h) | ||||||||||||||||||||||||
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High Tide | 11:54PM2.02m | 2:23PM1.39m | 00:44AM1.98m | 3:20PM1.39m | 1:37AM1.89m | 4:18PM1.41m | ||||||||||||||||||
Low Tide | 7:23AM-0.61m | 7:05PM0.85m | 8:16AM-0.57m | 8:05PM0.89m | 9:11AM-0.47m | 9:15PM0.90m | ||||||||||||||||||
 | |  | | | | | | | | | | | | |  | | | | | |  | | | |
 | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:29 | — | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:30 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 9 | 9 | 11 | 13 | 13 | 13 | 11 | 10 | 10 | 9 | 11 | 13 | 14 | 13 | 12 | 11 | 10 | 10 | 11 | 13 | 13 | 12 | 11 | 10 |
3 | 4 | 6 | 7 | 7 | 7 | 5 | 5 | 4 | 3 | 5 | 7 | 8 | 8 | 7 | 7 | 4 | 3 | 5 | 6 | 6 | 5 | 5 | 5 | |
Swell 1 Height (m) Direction Period (s) | WNW 11 | NW 10 | NW 9 | WNW 11 | WNW 10 | WNW 16 | WNW 16 | WNW 16 | WNW 15 | WNW 15 | WNW 14 | WNW 14 | S 15 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 |
 kJ | 499 | 692 | 711 | 107 | 163 | 343 | 539 | 1081 | 1507 | 911 | 996 | 1143 | 71 | 987 | 958 | 1226 | 1117 | 1100 | 784 | 384 | 371 | 421 | 575 | 466 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | N 8 | NW 18 | WNW 18 | S 16 | WNW 13 | SW 17 | SW 17 | WNW 10 | NW 10 | SW 16 | SW 16 | NW 8 | NW 8 | SW 16 | SW 16 | SW 16 | SW 21 | SW 21 | SW 16 | SW 16 | SW 16 | SW 16 |
| kJ | 60 | 59 | 105 | 82 | 178 | 46 | 149 | 74 | 76 | 272 | 400 | 69 | 69 | 167 | 167 | 96 | 95 | 68 | 162 | 224 | 90 | 89 | 122 | 118 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SSW 18 | WNW 11 | SSW 13 | SSW 13 | SSW 13 | S 16 | S 16 | S 16 | SW 17 | SW 16 | S 16 | SW 24 | SW 16 | SW 16 | S 15 | S 15 | S 15 | SW 16 | SW 16 | S 14 | S 14 | S 14 | S 14 |
| kJ | 13 | 32 | 186 | 58 | 34 | 34 | 46 | 46 | 46 | 70 | 69 | 42 | 87 | 69 | 96 | 39 | 38 | 67 | 66 | 90 | 61 | 60 | 58 | 58 |
Wind waves Height (m) Direction Period (s) | NNW 9 | NNW 8 | NNW 9 | NW 8 | NNW 8 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NW 14 | N 7 | N 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 |
| kJ | 926 | 534 | 505 | 682 | 541 | 682 | 769 | 890 | 935 | 745 | 578 | 735 | 2952 | 285 | 258 | 336 | 460 | 669 | 671 | 1006 | 931 | 976 | 955 | 1083 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 54 | 40 | 40 | 231 | 436 | 437 | 234 | 41 | 59 | 59 | 51 | 262 | 316 | 436 | 134 | 68 | 54 | 54 | 54 | 289 | 294 | 262 | 100 | 41 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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