Klamath Rivermouth Surf Break

Lat Long: 41.55° N 124.08° W

Klamath Rivermouth Surf Forecast and Surf Report

Issued: 4 pm 25 Sep 2026 (local time)

Forecast update in  hr  min

Today's Klamath Rivermouth sea temperature is
14.2°C
0.6° 

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


Klamath Rivermouth surf forecast from 26 Sep 2026:

  • Best quality surf: Wednesday 30 Sep, 5PM (local time) - 10ft (3.0m), 8s period, NW swell with cross-onshore winds.
  • Most powerful swell: Thursday 1 Oct, 5PM (local time) - 11ft (3.5m), 9s period, NW swell with 2,281 kJ wave energy.
  • Next surfable swell (1★+): Saturday 26 Sep, 2AM (local time) - 5.5ft (1.7m), 9s period with WNW swell.

Best Forecast Surf Conditions for Klamath Rivermouth this week:

The surf forecast for Klamath Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 26) at 2AM. The primary swell is predicted to be 1.7m and 9s period with a secondary swell of 0.6m and 13s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Klamath Rivermouth in the next 16 days are 3.5m 9s and forecast to arrive on Thursday (Oct 01) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sat 26th Sep)5.5ft (1.7m) 9s
Best Surf 5PM (Wed 30th Sep)10ft (3.0m) 8s
Most Powerful 5PM (Thu 1st Oct)11ft (3.5m) 9s

Table - best surf conditions forecast for Klamath Rivermouth over the next 16 days.


Short Range Forecast

Mostly dry. Very mild (max 18°C on Fri afternoon, min 11°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 19°C on Mon afternoon, min 11°C on Thu morning). Wind will be generally light.

Fri
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
Thursday
1
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
3
1
2
2
1
1
3
2
2
4
2
0
4
2
!
2
0
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
WNW
9
1.7
WNW
9
1.5
NW
8
1.7
NW
8
1.5
NW
8
1.1
NW
7
1.8
NW
7
1.8
NW
8
1.2
WNW
16
1.3
WNW
14
1.4
WNW
14
1.2
WNW
13
1.2
WNW
13
2
WNW
12
2.1
WNW
12
3
NW
8
2.1
NW
9
2.3
NW
9
3.5
NW
9
2.5
NW
9
Wave Graph
Metric surfscale
Energy kJ
804
465
297
346
257
121
336
383
679
697
778
491
499
1173
1215
1231
654
835
2281
1102
Wind (km/h)
20
NNW
5
ENE
5
WNW
10
WNW
10
SE
5
WNW
15
NW
5
E
10
WNW
15
NNW
5
E
10
NW
15
NNW
5
NE
10
NW
20
NNW
15
N
25
NNW
30
NNW
20
N
Wind State
cross-on
cross-off
cross-on
cross-on
cross-off
on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
cross
cross-on
cross-on
cross
High Tide
11:38PM2.47m
12:00PM2.59m
00:24AM2.45m
12:27PM2.69m
1:11AM2.40m
12:58PM2.77m
2:01AM2.31m
1:33PM2.80m
2:56AM2.20m
2:12PM2.78m
3:59AM2.08m
2:58PM2.72m
Low Tide
5:37PM0.87m
5:47AM0.73m
6:16PM0.66m
6:18AM0.84m
6:57PM0.49m
6:52AM0.97m
7:40PM0.37m
7:27AM1.12m
8:28PM0.32m
8:05AM1.27m
9:21PM0.34m
8:49AM1.42m
10:22PM0.39m
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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7:07
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7:07
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7:09
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7:09
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7:11
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7:11
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
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7:07
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7:05
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7:02
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7:01
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7:00
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6:58
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 mm
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Temp °C
18
14
18
18
13
15
16
12
18
19
14
18
19
15
19
19
14
17
18
14
Feels °C
15
13
16
16
12
13
14
11
15
16
12
15
16
13
17
17
12
12
11
8
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Klamath Rivermouth Surf forecast

The above surf forecast table for Klamath Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Klamath Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Klamath Rivermouth surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Klamath Rivermouth) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Klamath Rivermouth may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Klamath Rivermouth is 67 km (42 miles) from McKinleyville. If you plan a vacation in Del Norte County, look for hotels and other accommodation in McKinleyville. McKinleyville has rooms for a wide range of budgets as well as car hire and transport links.

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