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Third Reef surfForecast / CAL – Humboldt / USA
48hr Weather and Surf, issued 10 pm Monday 18 May 2026 PDTForecast update in hr min s Forecast update imminent
Third Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Third Reef sea temperature is
9.7° C
(Which is 2.2°C colder than average for this time of year)How big are the waves at Third Reef today?
The current surf forecast for Third Reef at 4AM is: 2.0m 15s primary swell from a Northwest direction and 0.4m 17s secondary swell from a Southwest direction (forecast issued at 10:00pm May 18). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 4.5ft (1.3m) | 14s |
| Afternoon (19 May) | 7ft (2.1m) | 14s |
| Evening (19 May) | 7ft (2.1m) | 13s |
Table - waves today at Third Reef. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 21°C on Tue afternoon, min 10°C on Mon night). Winds decreasing (fresh winds from the NW on Wed afternoon, calm by Thu afternoon). | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
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 |   |    |    |    | ||||||||||||||||||||
NW 9 | WNW 16 | NW 16 | NW 15 | WNW 14 | NW 14 | NW 14 | WNW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 9 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 | |
490 | 620 | 1884 | 1672 | 638 | 1736 | 1760 | 624 | 1430 | 1147 | 1922 | 2114 | 2283 | 1189 | 1398 | 1374 | 1111 | 850 | 680 | 868 | 804 | 789 | 845 | 784 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross | cross-on | cross-on | glassy | |
High Tide | 00:44AM2.12m | 3:13PM1.40m | 1:37AM2.01m | 4:11PM1.40m | 2:34AM1.85m | |||||||||||||||||||
Low Tide | 6:46PM0.82m | 8:11AM-0.66m | 7:40PM0.87m | 9:06AM-0.55m | 8:45PM0.89m | 10:03AM-0.39m | ||||||||||||||||||
 |  | | | | | | | | |  | | | | | | | | | | |  | | | |
 | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — |
 | 8:27 | — | — | — | — | — | — | — | 8:28 | — | — | — | — | — | — | — | 8:29 | — | — | — | — | — | — | 8:30 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 10 | 10 | 11 | 14 | 18 | 17 | 21 | 16 | 11 | 10 | 11 | 14 | 18 | 19 | 19 | 14 | 10 | 10 | 12 | 15 | 15 | 15 | 14 |
12 | 6 | 7 | 7 | 11 | 14 | 13 | 15 | 12 | 7 | 7 | 8 | 11 | 13 | 12 | 14 | 10 | 7 | 7 | 10 | 14 | 13 | 14 | 14 | |
Swell 1 Height (m) Direction Period (s) | WNW 16 | WNW 16 | NW 16 | NW 15 | NW 9 | NW 14 | SW 16 | WNW 13 | SW 16 | NW 13 | NW 13 | NW 13 | NW 13 | SW 21 | SW 16 | SW 16 | SW 16 | SW 16 | NW 11 | NW 11 | NW 11 | NW 10 | NW 10 | NW 10 |
 kJ | 330 | 620 | 1884 | 1672 | 423 | 1736 | 69 | 624 | 96 | 1147 | 1147 | 1204 | 1167 | 224 | 90 | 89 | 122 | 119 | 664 | 868 | 804 | 789 | 789 | 784 |
Swell 2 Height (m) Direction Period (s) | S 16 | SW 17 | SW 17 | SW 17 | WNW 14 | SW 16 | S 15 | SW 16 | S 15 | SW 16 | SW 16 | SW 16 | SW 21 | SW 16 | S 14 | S 14 | S 14 | S 14 | NNW 9 | SW 15 | SSW 19 | SW 19 | SW 19 | SW 15 |
| kJ | 46 | 47 | 76 | 70 | 638 | 42 | 70 | 69 | 39 | 96 | 96 | 68 | 162 | 65 | 61 | 59 | 33 | 57 | 111 | 79 | 251 | 303 | 184 | 113 |
Swell 3 Height (m) Direction Period (s) | SW 16 | S 16 | S 16 | S 16 | SW 16 | S 15 | SW 24 | S 15 | S 12 | S 15 | S 15 | S 14 | SW 16 | S 14 | SW 21 | SSW 21 | SW 21 | SW 21 | SW 15 | S 14 | SW 15 | SW 15 | SW 15 | S 13 |
| kJ | 43 | 46 | 46 | 45 | 69 | 41 | 87 | 69 | 11 | 39 | 38 | 37 | 66 | 36 | 117 | 44 | 18 | 18 | 112 | 57 | 78 | 79 | 80 | 54 |
Wind waves Height (m) Direction Period (s) | NW 9 | NW 9 | — | — | — | — | NW 14 | NW 8 | NW 13 | NW 8 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 9 | — | — | — | NW 10 | — |
| kJ | 490 | 384 | — | — | — | — | 1760 | 413 | 1430 | 441 | 1922 | 2114 | 2283 | 1189 | 1398 | 1374 | 1111 | 850 | 680 | — | — | — | 845 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 57 | 29 | 0 | 0 | 0 | 193 | 243 | 385 | 57 | 29 | 0 | 3 | 3 | 193 | 238 | 211 | 211 | 3 | 0 | 0 | 3 | 169 | 3 | 0 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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