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Surf Forecasts:
Third Reef surfForecast / CAL – Humboldt / USA
48hr Weather and Surf, issued 10 am 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
10.2° C
(Which is 1.7°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 3PM is: 1.8m 9s primary swell from a Northwest direction and 0.4m 18s secondary swell from a West-northwest direction, 0.3m 13s secondary swell from a South-southwest direction (forecast issued at 10:00am May 18). The wind direction is predicted to be cross-onshore.
| Time (PDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 5ft (1.6m) | 9s |
| Afternoon (18 May) | 6ft (1.8m) | 9s |
| Evening (18 May) | 5.5ft (1.7m) | 9s |
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, light winds from the NNE by Wed night). | ||||||||||||||||||||||||
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 9 | NW 9 | NW 8 | 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 | |
492 | 612 | 486 | 542 | 454 | 620 | 3585 | 3181 | 638 | 1736 | 1895 | 624 | 1430 | 1147 | 1922 | 2235 | 1167 | 1189 | 1398 | 1374 | 1130 | 807 | 607 | 813 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross | cross | cross-off | cross | cross-off | cross | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | |
High Tide | 2:15PM1.42m | 00:44AM2.12m | 3:13PM1.40m | 1:37AM2.01m | 4:11PM1.40m | 2:34AM1.85m | ||||||||||||||||||
Low Tide | 7:19AM-0.70m | 6:46PM0.82m | 8:11AM-0.66m | 7:40PM0.87m | 9:06AM-0.55m | 8:45PM0.89m | ||||||||||||||||||
 | | | | |  | | | | |  | | |  | | | | | | | | | | | |
 | 5:58 | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 |
 | — | — | — | — | 8:27 | — | — | — | — | — | — | — | 8:28 | — | — | — | — | — | — | — | 8:29 | — | — | 8:30 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 12 | 17 | 17 | 19 | 15 | 10 | 10 | 10 | 13 | 18 | 18 | 21 | 16 | 10 | 10 | 10 | 13 | 18 | 18 | 18 | 15 | 11 | 10 | 12 |
8 | 12 | 11 | 12 | 11 | 6 | 6 | 6 | 10 | 14 | 13 | 15 | 12 | 6 | 7 | 7 | 10 | 13 | 12 | 12 | 11 | 8 | 7 | 10 | |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 9 | WNW 18 | WNW 17 | WNW 16 | WNW 16 | NW 9 | 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 | NW 11 | WNW 11 | NW 11 |
 kJ | 492 | 446 | 123 | 197 | 330 | 620 | 497 | 1914 | 449 | 1736 | 69 | 624 | 96 | 1147 | 1147 | 1204 | 1167 | 224 | 90 | 89 | 122 | 807 | 606 | 813 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | S 16 | S 16 | SW 17 | WNW 16 | 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 | SW 16 | NNW 9 | SW 15 |
| kJ | 59 | 58 | 34 | 46 | 46 | 47 | 589 | 70 | 638 | 42 | 39 | 69 | 39 | 96 | 96 | 68 | 162 | 65 | 61 | 33 | 33 | 119 | 130 | 79 |
Swell 3 Height (m) Direction Period (s) | SW 18 | WNW 18 | S 16 | SSW 13 | SW 16 | S 16 | SW 17 | 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 | S 14 | SW 15 | S 14 |
| kJ | 50 | 64 | 47 | 34 | 43 | 46 | 76 | 45 | 69 | 41 | 87 | 39 | 11 | 39 | 38 | 37 | 66 | 63 | 117 | 44 | 18 | 32 | 112 | 57 |
Wind waves Height (m) Direction Period (s) | — | NW 9 | NW 9 | NW 8 | NW 9 | NW 9 | NW 16 | NW 15 | — | NW 9 | NW 14 | NW 8 | NW 13 | NW 8 | NW 13 | NW 13 | NW 9 | NW 12 | NW 12 | NW 12 | NW 12 | NW 8 | NW 9 | — |
| kJ | — | 612 | 486 | 542 | 454 | 384 | 3585 | 3181 | — | 730 | 1895 | 403 | 1430 | 429 | 1922 | 2235 | 1072 | 1189 | 1398 | 1374 | 1130 | 737 | 607 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 195 | 385 | 387 | 183 | 3 | 29 | 29 | 0 | 211 | 243 | 385 | 84 | 29 | 3 | 0 | 3 | 193 | 238 | 211 | 283 | 3 | 0 | 0 |
Best forecast wave conditions in Humboldt County | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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