Klamath Rivermouth Surf Break

Lat Long: 41.55° N 124.08° W

Klamath Rivermouth Surf Forecast and Surf Report

Issued: 4 am 07 Aug 2026 (local time)

Forecast update in  hr  min

Today's Klamath Rivermouth sea temperature is
14.1° C
0.5° 

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 7 Aug 2026:

  • Best quality surf: Tuesday 11 Aug, 8PM (local time) - 10ft (3.0m), 8s period, NW swell with cross-shore winds.
  • Most powerful swell: Tuesday 11 Aug, 5PM (local time) - 11ft (3.5m), 8s period, NW swell with 1,364 kJ wave energy.
  • Next surfable swell (1★+): Friday 7 Aug, 8PM (local time) - 4.5ft (1.4m), 7s period with NW 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 Friday (Aug 07) at 8PM. The primary swell is predicted to be 1.4m and 7s period with a secondary swell of 0.4m and 13s. 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 3.5m 8s and forecast to arrive on Tuesday (Aug 11) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Friday (Aug 07) at 8AM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Fri 7th Aug)4.5ft (1.4m) 7s
Best Surf 8PM (Tue 11th Aug)10ft (3.0m) 8s
Most Powerful 5PM (Tue 11th Aug)11ft (3.5m) 8s

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


Short Range Forecast

Mostly dry. Warm (max 22°C on Sat morning, min 14°C on Fri night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light.

Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
1
2
3
1
2
3
1
2
3
0
0
2
0
0
4
2
2
2
Swell
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
12
1.2
NW
6
1.3
NW
7
1.3
NW
7
2.1
NW
8
1.9
NW
8
1.8
NW
8
2.4
NW
8
2.1
NW
8
1.8
NW
8
2.5
NW
8
2.1
NW
8
1.6
NW
7
3.5
NW
8
2.1
NW
8
1.8
NW
8
3
NW
9
2.5
NW
9
2
NW
8
1.9
NW
8
1.5
NW
8
Wave Graph
Metric surfscale
Energy kJ
77
120
179
179
510
413
364
762
593
435
975
579
289
1364
551
435
1248
952
542
493
270
Wind (km/h)
10
NW
10
NW
5
E
10
WNW
10
NW
5
NNW
10
NW
10
NW
0
NNE
15
NW
15
NW
0
NNW
15
NW
25
NNW
10
N
20
NW
25
NNW
5
NNE
5
W
5
WSW
5
SE
Wind State
cross-on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
cross
cross-on
cross-on
cross-off
on
cross-on
glassy
High Tide
8:07AM1.80m
6:50PM2.69m
9:31AM1.90m
7:58PM2.76m
10:32AM2.03m
9:04PM2.85m
11:20AM2.16m
10:06PM2.92m
12:01PM2.30m
11:03PM2.95m
12:40PM2.42m
11:56PM2.92m
1:17PM2.52m
00:48AM2.80m
Low Tide
12:12PM1.51m
2:34AM0.44m
1:34PM1.58m
3:36AM0.27m
2:54PM1.55m
4:31AM0.12m
4:03PM1.45m
5:20AM0.03m
5:04PM1.31m
6:05AM0.02m
5:59PM1.16m
6:46AM0.10m
6:52PM1.02m
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>
6:16
6:16
6:18
6:18
6:20
6:20
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:27
8:24
8:23
8:22
8:21
8:20
8:19
 mm
Temp °C
19
21
15
22
22
17
21
21
16
22
23
17
22
24
20
24
25
21
22
20
17
Feels °C
18
20
15
21
21
18
20
19
16
20
21
17
20
21
17
22
21
18
22
20
17
  • 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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