Klamath Rivermouth Surf Break

Lat Long: 41.55° N 124.08° W

Klamath Rivermouth Surf Forecast and Surf Report

Issued: 10 am 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Klamath Rivermouth sea temperature is
15.2°C
1.3° 

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 9 Sep 2026:

  • Best quality surf: Thursday 10 Sep, 2AM (local time) - 2.5ft (0.7m), 18s period, SW swell with glassy winds.
  • Most powerful swell: Sunday 13 Sep, 8PM (local time) - 8ft (2.5m), 8s period, NW swell with 795 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 9 Sep, 8PM (local time) - 2ft (0.6m), 19s period with SW 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 Wednesday (Sep 09) at 8PM. The primary swell is predicted to be 0.6m and 19s period with a secondary swell of 1.1m and 7s. Another secondary swell of 0.6m and 12s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Klamath Rivermouth in the next 16 days are 2.5m 8s and forecast to arrive on Sunday (Sep 13) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Wed 9th Sep)2ft (0.6m) 19s
Best Surf 2AM (Thu 10th Sep)2.5ft (0.7m) 18s
Most Powerful 8PM (Sun 13th Sep)8ft (2.5m) 8s

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


Short Range Forecast

Mostly dry. Warm (max 28°C on Wed morning, min 11°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

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

Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
3
2
2
3
2
0
3
1
1
2
0
0
3
0
1
2
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
NW
8
0.5
SW
19
0.7
SW
18
1.3
NW
8
0.7
SW
17
1.8
NW
8
0.8
SW
16
0.7
SW
16
1.2
NW
10
1
NW
11
0.7
SW
14
1.2
WNW
10
1.2
WNW
9
2.2
NW
7
1.8
NW
8
1.6
NW
8
1.9
NW
8
1.7
NW
8
1.2
NW
7
1.1
NW
7
0.4
SW
16
Wave Graph
Metric surfscale
Energy kJ
130
183
300
241
277
364
299
239
257
224
203
251
216
449
369
276
403
337
147
105
77
Wind (km/h)
5
WNW
5
NW
5
NE
5
W
10
NW
5
SE
5
W
10
NW
5
ESE
10
SW
10
SSW
10
ESE
15
NW
20
NNW
5
E
10
NW
15
NW
5
ESE
10
WNW
10
NW
5
SE
Wind State
on
cross-on
glassy
on
cross-on
glassy
on
cross-on
cross-off
cross-on
cross-on
off
cross-on
cross-on
glassy
cross-on
cross-on
glassy
on
cross-on
cross-off
High Tide
11:28AM2.43m
11:01PM2.73m
12:01PM2.55m
11:52PM2.69m
12:33PM2.64m
00:42AM2.60m
1:05PM2.69m
1:30AM2.47m
1:36PM2.70m
2:19AM2.32m
2:08PM2.66m
3:10AM2.16m
2:40PM2.58m
4:06AM2.01m
Low Tide
5:03PM1.06m
5:38AM0.33m
5:52PM0.87m
6:15AM0.45m
6:38PM0.71m
6:51AM0.62m
7:22PM0.60m
7:25AM0.82m
8:06PM0.55m
7:58AM1.02m
8:51PM0.56m
8:32AM1.21m
9:38PM0.62m
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:50
6:52
6:52
6:54
6:54
6:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:36
7:34
7:32
7:30
7:29
7:27
7:25
 mm
Temp °C
28
27
21
23
23
15
18
18
13
16
16
14
18
19
16
18
18
13
18
18
13
Feels °C
26
25
20
22
22
16
18
17
12
14
14
13
15
15
14
16
15
13
17
17
13
  • 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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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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