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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 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 1PM is: 0.8m 10s primary swell from a West-northwest direction and 0.4m 18s secondary swell from a West-northwest direction (forecast issued at 10:00am May 18). An open ocean swell of 2.1m 8s 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) | 2.5ft (0.7m) | 17s |
| 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 | Thu 21 | |||||||||||||||||||||
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 | 2 AM | 5 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
NW 9 | NW 8 | WNW 10 | 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 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | |
711 | 682 | 178 | 343 | 539 | 1214 | 1507 | 1626 | 1724 | 1143 | 957 | 987 | 958 | 1289 | 1060 | 1100 | 702 | 384 | 371 | 429 | 518 | 563 | 441 | 396 | |
Wind (km/h) | ||||||||||||||||||||||||
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High Tide | 2:23PM1.39m | 00:44AM1.98m | 3:20PM1.39m | 1:37AM1.89m | 4:18PM1.41m | 2:36AM1.75m | ||||||||||||||||||
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 | — | — | — | — | — | — | — | 5:56 |
 | — | — | — | — | 8:29 | — | — | — | — | — | — | — | 8:30 | — | — | — | — | — | — | — | 8:30 | — | — | 8:31 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 13 | 13 | 12 | 11 | 10 | 10 | 9 | 11 | 13 | 14 | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 13 | 12 | 11 | 10 | 10 | 10 |
6 | 7 | 7 | 6 | 5 | 6 | 4 | 3 | 5 | 7 | 9 | 8 | 8 | 7 | 4 | 4 | 4 | 5 | 6 | 6 | 5 | 5 | 5 | 5 | |
Swell 1 Height (m) Direction Period (s) | NW 9 | WNW 11 | WNW 10 | WNW 10 | 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 | WNW 12 | WNW 11 | WNW 11 | WNW 11 |
 kJ | 711 | 107 | 163 | 154 | 539 | 1214 | 1507 | 1626 | 1724 | 1143 | 957 | 987 | 958 | 1289 | 1060 | 1100 | 702 | 384 | 371 | 429 | 518 | 563 | 441 | 396 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | NW 18 | WNW 18 | WNW 16 | WNW 13 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | S 15 | SW 16 | NW 8 | SW 16 | SW 16 | SW 16 | SW 21 | SW 21 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 |
| kJ | 186 | 82 | 178 | 343 | 114 | 74 | 76 | 70 | 69 | 69 | 71 | 69 | 211 | 96 | 95 | 68 | 162 | 224 | 90 | 89 | 122 | 118 | 112 | 79 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | S 16 | S 16 | S 16 | S 16 | S 16 | S 16 | S 16 | SW 16 | S 15 | SW 16 | S 15 | S 15 | S 15 | SW 16 | SW 16 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 |
| kJ | 59 | 58 | 34 | 46 | 46 | 46 | 46 | 45 | 45 | 42 | 69 | 69 | 96 | 39 | 38 | 67 | 66 | 65 | 61 | 60 | 58 | 58 | 58 | 58 |
Wind waves Height (m) Direction Period (s) | N 8 | NW 8 | NNW 8 | NNW 8 | NW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | N 8 | N 7 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 8 | NNW 9 | NNW 9 | NNW 9 |
| kJ | 105 | 682 | 541 | 532 | 699 | 837 | 913 | 705 | 597 | 735 | 605 | 506 | 253 | 246 | 474 | 629 | 751 | 973 | 931 | 817 | 827 | 813 | 977 | 1045 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 40 | 246 | 436 | 438 | 234 | 41 | 59 | 59 | 40 | 262 | 294 | 436 | 134 | 59 | 54 | 51 | 54 | 244 | 289 | 262 | 334 | 41 | 40 | 40 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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