Cape Mendocino Surf Break

Lat Long: 40.42° N 124.40° W

Issued: 4 am 18 Jun 2026 (local time)

Forecast update in  hr  min

Today's Cape Mendocino sea temperature is
10.7° C

1.9°C colder than average for this time of year

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


Cape Mendocino surf forecast from 18 Jun 2026:

  • Best quality surf: Thursday 18 Jun, 8AM (local time) - 3.5ft (1.1m), 17s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 18 Jun, 8AM (local time) - 3.5ft (1.1m), 17s period, SW swell with 711 kJ wave energy.
  • Next surfable swell (1★+): Thursday 18 Jun, 8AM (local time) - 3.5ft (1.1m), 17s period with SW swell.

Best Forecast Surf Conditions for Cape Mendocino this week:

The surf forecast for Cape Mendocino over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jun 18) at 8AM. The primary swell is predicted to be 1.1m and 17s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Cape Mendocino in the next 16 days are 1.1m 17s and forecast to arrive on Thursday (Jun 18) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 9s period and expected on Wednesday (Jun 24) at 8PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 18th Jun)3.5ft (1.1m) 17s
Best Surf 8AM (Thu 18th Jun)3.5ft (1.1m) 17s
Most Powerful 8AM (Thu 18th Jun)3.5ft (1.1m) 17s

Table - best surf conditions forecast for Cape Mendocino over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Fri morning. Very mild (max 15°C on Thu morning, min 10°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 15°C on Sun afternoon, min 11°C on Sun night). Winds decreasing (fresh winds from the NNW on Sun afternoon, calm by Tue morning).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
3
2
2
3
1
0
1
0
0
2
0
1
1
2
3
2
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
16
1
SW
16
1
SW
16
1
SW
15
1.1
SW
15
0.9
SSW
14
0.9
SW
14
1.2
SSW
16
1.1
SSW
16
0.9
SSW
16
0.9
SSW
14
0.9
SSW
14
0.8
SSW
14
0.7
SSW
14
0.7
SW
16
1.6
NW
8
0.8
SSW
16
0.6
SSW
19
0.8
SSW
18
0.8
SSW
18
0.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
677
508
489
459
503
362
297
641
620
425
362
330
264
173
268
276
318
283
356
356
302
Wind (km/h)
10
SW
5
WSW
15
SSE
15
S
5
SW
10
NNE
20
NNW
25
NNW
25
N
30
NNW
25
N
15
N
10
NW
15
NNW
10
NNW
10
WSW
5
W
5
N
25
NNW
25
N
30
N
Wind State
cross-on
glassy
cross-off
cross
cross-on
cross-off
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross-on
glassy
glassy
cross
cross
cross
High Tide
3:45PM1.53m
2:24AM1.73m
4:32PM1.58m
3:26AM1.53m
5:17PM1.63m
4:36AM1.32m
6:01PM1.68m
5:58AM1.16m
6:43PM1.72m
7:32AM1.07m
7:23PM1.75m
9:01AM1.09m
8:02PM1.77m
Low Tide
8:51AM-0.43m
9:05PM0.80m
9:40AM-0.26m
10:18PM0.73m
10:29AM-0.06m
11:33PM0.62m
11:18AM0.15m
00:46AM0.47m
12:08PM0.36m
1:52AM0.31m
1:00PM0.55m
2:49AM0.15m
1:53PM0.72m
3:39AM0.02m
part cloud
part cloud
part cloud
rain showers
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:47
5:47
5:47
5:47
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:50
8:50
8:51
8:51
8:51
8:51
8:51
 mm
1
Temp °C
15
15
13
13
15
13
14
14
12
14
15
13
15
15
14
15
15
13
15
16
14
Feels °C
14
14
13
11
13
12
10
9
7
9
10
9
13
13
11
14
14
12
11
11
9
Swell 1
Height (m)
Direction
Period (s)
2.4
NNW
10
2.1
NNW
9
2
NNW
9
1.8
NNW
9
1.7
NNW
9
1.8
NNW
10
1.7
NNW
10
1.2
SSW
16
1.1
SSW
16
0.9
SSW
16
0.9
SSW
14
2
NNW
8
1.8
NW
8
0.7
SSW
14
1.7
NNW
8
1.6
NW
8
1.4
NW
8
2
NNW
8
0.8
SSW
18
0.8
SSW
18
0.8
SSW
16
Energy kJ
1058
799
646
572
508
635
516
641
620
425
362
547
398
173
314
276
236
525
356
356
302
Swell 2
Height (m)
Direction
Period (s)
1.1
SW
16
1
SW
16
1
SW
16
1
SW
15
1.1
SW
15
0.9
SSW
14
0.9
SW
14
0.5
S
12
0.4
S
11
0.4
SSW
20
0.4
SSW
19
0.9
SSW
14
0.8
SSW
14
0.4
SSW
18
0.7
SW
16
0.7
SSW
16
0.8
SSW
16
0.6
SSW
19
0.7
SSW
15
0.8
SSW
15
0.5
SSW
13
Energy kJ
677
508
489
459
503
362
297
66
38
149
148
330
264
121
268
229
318
283
188
252
99
Swell 3
Height (m)
Direction
Period (s)
0.7
S
14
0.7
S
13
0.7
S
13
0.7
S
13
0.6
S
12
0.7
SSW
18
0.6
SSW
18
0.3
WNW
10
0.4
SW
20
0.3
S
11
0.3
S
11
0.6
SSW
18
0.6
SSW
18
0.2
SSE
14
0.6
SSW
13
0.6
SSW
13
0.6
SSW
20
0.6
SSW
15
0.2
SSE
12
0.2
SSE
12
0.2
SSE
11
Energy kJ
180
167
165
157
105
273
240
22
98
21
21
211
209
19
116
116
298
144
14
14
13
Wind waves
Height (m)
Direction
Period (s)
1.8
NNW
10
1.9
NNW
10
2.3
NNW
9
2.2
NNW
9
1.8
NW
8
1.7
NNW
8
2.5
NNW
9
2.5
NNW
9
3
NNW
9
Energy kJ
566
674
821
742
388
394
1107
1151
1411
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
3
3
2
3
4
2
3
2
3
2
3
2
3
2
2
4
4
Distance (km)
152
0
0
21
21
0
334
722
40
334
54
21
51
51
40
152
0
0
151
54
41
Best forecast wave conditions in Humboldt County
Rating
(10 max)
3
4
3
4
4
4
3
4
3
2
3
3
4
4
4
Best forecast wave conditions in United States
Rating
(10 max)
3
4
4
3
4
4
3
3
4
2
3
4
3
2
3
3
3
4
3
4
4
Header Global
Rating
(10 max)
9
5
6
5
7
5
5
4
9
4
7
6
7
5
5
5
5
6
7
5
5
  • 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 Cape Mendocino Surf forecast

The above surf forecast table for Cape Mendocino provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cape Mendocino can be found by selecting the local surf guide option on the grey menu. Our Cape Mendocino 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 (Cape Mendocino) 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 Cape Mendocino 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.

Cape Mendocino is 47 km (29 miles) from Eureka. If you plan a vacation in Humboldt County, look for hotels and other accommodation in Eureka. Eureka has rooms for a wide range of budgets as well as car hire and transport links.

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