Klamath Rivermouth Surf Break

Lat Long: 41.55° N 124.08° W

Klamath Rivermouth 48 hour detailed Surf Forecast

Issued: 10 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Klamath Rivermouth sea temperature is
15.0° C
1.1° 

Klamath Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Klamath Rivermouth today (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 2.5ft (0.7m), 10s period with WNW swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 2.5ft (0.7m), 10s period with WNW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 2.5ft (0.7m), 10s period with WNW swell.

The current surf forecast for Klamath Rivermouth at 2PM is: 0.7m 10s primary swell from a West-northwest direction and 0.6m 8s secondary swell from a Northwest direction (forecast issued at 10:00am August 21). The wind direction is predicted to be cross-onshore.

Time (PDT) & DateWave HeightWave Period
Morning (21 Aug)2.5ft (0.7m)10s
Afternoon (21 Aug)2.5ft (0.7m)10s
Evening (21 Aug)2.5ft (0.7m)10s

Table - waves today at Klamath Rivermouth. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 21°C on Sun afternoon, min 13°C on Fri night). Wind will be generally light.

Friday
21
Saturday
22
Sunday
23
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
Rating
(10 max)
2
1
1
1
2
1
1
1
1
1
0
0
1
1
1
1
1
0
0
1
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
SW
14
0.5
SW
14
0.5
SW
14
0.7
WNW
10
0.7
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.6
WNW
10
0.4
SW
17
0.4
SW
17
0.4
SW
16
0.4
SW
16
0.4
SW
16
1
NW
8
1.6
NW
7
2
NW
7
1.9
NW
7
1.8
NW
8
Wave Graph
Metric surfscale
Energy kJ
115
112
104
106
102
78
77
77
74
74
74
72
76
72
69
66
64
110
226
387
392
375
Wind (km/h)
5
SSE
10
WSW
10
WSW
10
WSW
0
S
5
ESE
5
ESE
5
ESE
5
ESE
5
SW
10
W
10
W
5
NNW
5
NE
5
NE
5
NE
5
N
15
NW
15
NW
15
NW
5
SSE
10
SSE
Wind State
glassy
cross-on
cross-on
on
glassy
glassy
glassy
off
off
glassy
on
on
glassy
cross-off
cross-off
cross-off
glassy
cross-on
cross-on
cross-on
glassy
cross-off
High Tide
8:44AM1.79m
6:49PM2.35m
9:55AM1.87m
7:53PM2.37m
10:40AM1.95m
8:51PM2.43m
Low Tide
12:23PM1.65m
2:40AM0.74m
1:46PM1.68m
3:34AM0.65m
2:56PM1.65m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:07
8:05
8:04
 mm
Temp °C
14
18
19
18
14
13
13
13
14
18
20
19
15
14
13
13
15
20
21
20
16
16
Feels °C
14
18
18
18
15
13
13
12
13
18
19
18
15
14
12
12
14
18
19
19
16
14
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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