Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Klamath Rivermouth surfForecast / CAL – Del Norte County / USA
48hr Weather and Surf, issued 9 pm Saturday 20 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Klamath Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Klamath Rivermouth sea temperature is
12.1° C
(Which is slightly warmer than usual)How big are the waves at Klamath Rivermouth today?
The current surf forecast for Klamath Rivermouth at 4AM is: 1.4m 11s primary swell from a Northwest direction and 1.0m 10s secondary swell from a West-southwest direction (forecast issued at 09:00pm December 20). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Dec) | 4.5ft (1.4m) | 11s |
| Afternoon (21 Dec) | 4.5ft (1.4m) | 11s |
| Evening (21 Dec) | 4.5ft (1.3m) | 10s |
Table - waves today at Klamath Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sat 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 12 | 11 | 11 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 713 | 663 | 553 | 476 | 533 | 467 | 458 | 425 | 361 | 367 | 347 | 340 | 378 | 371 | 314 | 246 | 319 | 1082 | 1426 | 1751 | 1955 | 2089 | 2160 | 2116 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | off | off | off | glass | glass | on | cross | cross- on | cross | cross- off | cross- off | cross- off | cross- on | cross- off | cross- off | cross- off | cross- off | off | off | glass | glass | glass |
High Tide / height (m) | 1:05AM 2.15 | 11:29AM 2.70 | 1:43AM 2.16 | 12:06PM 2.65 | 2:20AM 2.18 | 12:45PM 2.55 | ||||||||||||||||||
Low Tide / height (m) | 6:11PM 0.22 | 5:40AM 1.58 | 6:48PM 0.23 | 6:21AM 1.58 | 7:24PM 0.28 | 7:05AM 1.58 | ||||||||||||||||||
Sat 20 | Sunday 21 | Monday 22 | Tuesday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:39 | - | - | - | - | - | - | - | 7:39 | - | - | - | - | - | - | - | 7:39 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:49 | - | - | - | - | - | - | - | 4:49 | - | - | - | - | - | - | - | 4:50 |
 | |  | |  |  |  | | | |  | | |  |  |  |  | |  | | |  | | | |
Rain (mm) | 2 | 2 | 9 | 10 | 15 | 15 | 8 | 6 | 2 | 3 | 1 | 1 | 1 | - | 1 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 9 | 9 | 10 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 10 | 9 | 9 | 11 | 11 | 10 | 9 | 9 | 8 | 7 | 7 | 9 | 11 | 10 |
| Feels °C (?) | 8 | 8 | 8 | 10 | 9 | 12 | 11 | 10 | 10 | 8 | 8 | 6 | 6 | 8 | 8 | 8 | 6 | 6 | 5 | 4 | 4 | 7 | 9 | 9 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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