Klamath Rivermouth Surf Break

Lat Long: 41.55° N 124.08° W

Klamath Rivermouth 48 hour detailed Surf Forecast

Issued: 10 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Klamath Rivermouth sea temperature is
15.3°C
1.7° 

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 (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 2ft (0.6m), 18s period with SW swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 2ft (0.6m), 18s period with SW swell.
  • Evening surf: Evening surf (20 Sep, local time) - 2.5ft (0.7m), 19s period with SW swell.

The current surf forecast for Klamath Rivermouth at 5PM is: 0.6m 19s primary swell from a Southwest direction and 1.3m 6s secondary swell from a Northwest direction (forecast issued at 10:00am September 20). The wind direction is predicted to be cross-onshore.

Time (PDT) & DateWave HeightWave Period
Morning (20 Sep)2ft (0.6m)18s
Afternoon (20 Sep)2ft (0.6m)18s
Evening (20 Sep)2.5ft (0.7m)19s

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


Short Range Forecast

Mostly dry. Very mild (max 19°C on Tue afternoon, min 12°C on Sun night). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
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
3
3
2
2
2
1
1
2
3
3
4
4
4
3
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)
0.6
SW
18
0.6
SW
18
0.6
SW
18
0.6
SW
19
0.7
SW
19
0.8
SW
19
0.7
SW
18
0.7
SW
18
0.7
SW
17
0.8
SW
17
0.8
SW
17
0.8
SW
17
0.8
SW
17
1.1
WNW
14
1.3
WNW
13
1.4
WNW
13
1.5
WNW
13
1.5
WNW
12
1.4
WNW
12
3
NW
12
2.3
NW
8
2
NW
7
Wave Graph
Metric surfscale
Energy kJ
255
258
263
278
357
414
316
312
309
362
354
350
350
487
624
679
745
677
589
2244
601
423
Wind (km/h)
0
NE
10
WNW
10
WNW
10
NW
0
E
5
SSE
5
ESE
5
N
0
N
5
WNW
10
NW
10
NW
5
ESE
5
SE
5
NE
5
NE
5
NE
10
WNW
20
NW
20
NW
10
N
5
NNE
Wind State
glassy
on
cross-on
cross-on
glassy
cross-off
glassy
glassy
glassy
on
cross-on
cross-on
glassy
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
cross
glassy
High Tide
9:17AM1.93m
7:16PM2.24m
9:56AM2.02m
8:22PM2.28m
10:24AM2.12m
9:18PM2.35m
Low Tide
1:33PM1.70m
2:50AM0.73m
2:44PM1.61m
3:34AM0.67m
3:36PM1.46m
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:16
7:15
7:14
 mm
Temp °C
13
17
18
16
12
12
13
12
12
17
17
16
13
13
12
13
13
18
19
18
14
14
Feels °C
13
16
17
15
12
11
13
12
12
16
16
15
13
13
12
13
13
17
17
15
13
13
  • 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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