Klamath Rivermouth Surf Break

Lat Long: 41.55° N 124.08° W

Klamath Rivermouth Surf Forecast and Surf Report

Issued: 10 am 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Klamath Rivermouth sea temperature is
14.7° C
1.0° 

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 13 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 2AM (local time) - 3ft (0.9m), 12s period, WNW swell with glassy winds.
  • Most powerful swell: Sunday 16 Aug, 8AM (local time) - 2.5ft (0.8m), 16s period, SW swell with 306 kJ wave energy.
  • Next surfable swell (1★+): Thursday 13 Aug, 8PM (local time) - 5ft (1.5m), 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 Thursday (Aug 13) at 8PM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 0.6m and 16s. 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 0.8m 16s and forecast to arrive on Sunday (Aug 16) at 8AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Monday (Aug 17) at 11PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 13th Aug)5ft (1.5m) 7s
Best Surf 2AM (Thu 20th Aug)3ft (0.9m) 12s
Most Powerful 8AM (Sun 16th Aug)2.5ft (0.8m) 16s

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


Short Range Forecast

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

Days 4-6 Weather Summary

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

Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
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
0
2
1
1
2
1
0
2
1
0
2
1
0
2
1
0
2
0
0
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
NW
7
1.5
NW
7
0.6
SW
16
0.6
SW
15
0.6
SW
15
0.5
SW
18
0.6
SW
14
0.7
SW
17
0.6
SW
16
0.8
SW
16
0.8
SW
16
0.7
SW
15
0.7
SW
14
0.6
SW
14
0.6
SW
14
0.6
SW
15
1.5
NW
6
0.6
SW
16
0.6
SW
16
0.6
SW
15
0.9
WNW
12
Wave Graph
Metric surfscale
Energy kJ
261
216
153
149
134
155
132
280
208
302
299
215
206
169
132
134
172
206
157
143
228
Wind (km/h)
10
W
10
NW
5
SE
10
W
10
NW
0
ENE
10
WNW
15
NW
5
ESE
10
WNW
10
NW
5
SSE
5
WSW
15
NW
5
ESE
10
WNW
15
NW
5
ESE
15
WNW
20
NW
5
E
Wind State
on
cross-on
cross-off
on
cross-on
glassy
on
cross-on
glassy
on
cross-on
glassy
on
cross-on
glassy
on
cross-on
glassy
cross-on
cross-on
glassy
High Tide
1:17PM2.52m
00:48AM2.80m
1:53PM2.60m
1:39AM2.63m
2:27PM2.64m
2:31AM2.42m
3:02PM2.64m
3:25AM2.20m
3:38PM2.60m
4:24AM2.00m
4:15PM2.53m
5:36AM1.85m
4:57PM2.45m
Low Tide
6:52PM1.02m
7:26AM0.25m
7:43PM0.90m
8:03AM0.45m
8:34PM0.83m
8:38AM0.70m
9:26PM0.80m
9:13AM0.95m
10:20PM0.80m
9:49AM1.18m
11:19PM0.82m
10:27AM1.38m
00:25AM0.83m
part cloud
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:24
6:24
6:26
6:26
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:19
8:16
8:15
8:14
8:13
8:10
8:09
 mm
Temp °C
18
19
14
18
19
14
18
18
14
19
19
14
18
19
13
17
17
13
20
20
16
Feels °C
18
19
14
18
18
14
17
17
13
18
18
14
17
18
13
16
16
13
17
17
15
  • 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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