Cape Mendocino surfForecast / CAL – Humboldt / USA

information circle48hr Weather and Surf, issued 4 am Monday 18 May 2026 PDT
Forecast update in hr  min  s Forecast update imminent
Cape Mendocino surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cape Mendocino sea temperature is
9.6° C
(Which is 2.4°C colder than average for this time of year)

How big are the waves at Cape Mendocino today?

The current surf forecast for Cape Mendocino at 9AM is: 2.1m 9s primary swell from a Northwest direction (forecast issued at 04:00am May 18). An open ocean swell of 0.9m 8s is not directed at the surf break, a second open ocean swell of 1.8m 9s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (PDT) & DateWave HeightWave Period
Morning (18 May)7ft (2.1m)9s
Afternoon (18 May)1.5ft (0.5m)18s
Evening (18 May)4ft (1.2m)16s

Table - waves today at Cape Mendocino. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 14°C on Tue afternoon, min 9°C on Mon night). Mainly fresh winds.

Monday
18
Tuesday
19
Wednesday
20
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
2
1
0
0
0
0
2
1
1
1
1
!
1
1
2
1
1
1
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.5
WNW
11
1.9
NW
10
2.1
NW
9
2.2
NW
8
0.9
WNW
10
0.8
WNW
16
1
WNW
16
1.5
WNW
16
1.8
WNW
15
1.5
WNW
15
1.6
WNW
14
1.7
WNW
14
3
NW
14
1.7
WNW
13
1.7
WNW
13
1.9
WNW
13
1.8
WNW
13
1.8
WNW
13
1.6
WNW
12
1.2
WNW
12
1.2
WNW
12
1.3
WNW
12
1.5
WNW
12
1.4
WNW
11
Wave Graph
Metric surfscale
Energy kJ
499
692
711
682
178
343
539
1081
1507
911
996
1143
2952
987
958
1226
1117
1100
784
384
371
421
575
466
Wind (km/h)
25
N
25
NNE
20
N
25
NNW
30
NNW
30
N
30
N
20
N
30
N
30
N
30
N
30
N
30
N
30
N
25
N
20
N
30
N
35
N
35
N
35
N
35
N
35
N
30
N
25
N
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
11:54PM2.02m
2:23PM1.39m
00:44AM1.98m
3:20PM1.39m
1:37AM1.89m
4:18PM1.41m
Low Tide
7:23AM-0.61m
7:05PM0.85m
8:16AM-0.57m
8:05PM0.89m
9:11AM-0.47m
9:15PM0.90m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:29
8:30
8:30
Temp °C
9
9
11
13
13
13
11
10
10
9
11
13
14
13
12
11
10
10
11
13
13
12
11
10
3
4
6
7
7
7
5
5
4
3
5
7
8
8
7
7
4
3
5
6
6
5
5
5
Swell 1
Height (m)
Direction
Period (s)
1.5
WNW
11
1.9
NW
10
2.1
NW
9
0.7
WNW
11
0.9
WNW
10
0.8
WNW
16
1
WNW
16
1.5
WNW
16
1.8
WNW
15
1.5
WNW
15
1.6
WNW
14
1.7
WNW
14
0.4
S
15
1.7
WNW
13
1.7
WNW
13
1.9
WNW
13
1.8
WNW
13
1.8
WNW
13
1.6
WNW
12
1.2
WNW
12
1.2
WNW
12
1.3
WNW
12
1.5
WNW
12
1.4
WNW
11
Energy kJ
499
692
711
107
163
343
539
1081
1507
911
996
1143
71
987
958
1226
1117
1100
784
384
371
421
575
466
Swell 2
Height (m)
Direction
Period (s)
0.4
SSW
13
0.4
SSW
13
0.9
N
8
0.4
NW
18
0.5
WNW
18
0.3
S
16
0.7
WNW
13
0.4
SW
17
0.4
SW
17
1.2
WNW
10
1.4
NW
10
0.4
SW
16
0.4
SW
16
1.1
NW
8
1.1
NW
8
0.4
SW
16
0.4
SW
16
0.4
SW
16
0.4
SW
21
0.5
SW
21
0.4
SW
16
0.4
SW
16
0.5
SW
16
0.5
SW
16
Energy kJ
60
59
105
82
178
46
149
74
76
272
400
69
69
167
167
96
95
68
162
224
90
89
122
118
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
18
0.2
SSW
18
0.9
WNW
11
0.4
SSW
13
0.3
SSW
13
0.3
SSW
13
0.3
S
16
0.3
S
16
0.3
S
16
0.4
SW
17
0.4
SW
16
0.3
S
16
0.3
SW
24
0.4
SW
16
0.4
SW
16
0.3
S
15
0.3
S
15
0.4
S
15
0.4
SW
16
0.4
SW
16
0.4
S
14
0.4
S
14
0.4
S
14
0.4
S
14
Energy kJ
13
32
186
58
34
34
46
46
46
70
69
42
87
69
96
39
38
67
66
90
61
60
58
58
Wind waves
Height (m)
Direction
Period (s)
2.5
NNW
9
1.9
NNW
8
1.8
NNW
9
2.2
NW
8
2
NNW
8
2.3
NW
8
2.4
NNW
8
2.5
NNW
8
2.5
NNW
8
2.4
NNW
8
2.1
NNW
8
2.3
NNW
8
3
NW
14
1.6
N
7
1.5
N
8
1.7
NNW
8
2
NNW
8
2.3
NNW
8
2.3
NNW
8
2.5
NNW
8
2.5
NNW
8
2.5
NNW
9
2.5
NNW
9
2.5
NNW
9
Energy kJ
926
534
505
682
541
682
769
890
935
745
578
735
2952
285
258
336
460
669
671
1006
931
976
955
1083
Nearest Offshore or Glassy
Rating
(10 max)
3
4
3
2
2
2
2
4
4
4
4
4
3
2
4
4
5
5
4
4
1
4
4
4
Distance (km)
54
40
40
231
436
437
234
41
59
59
51
262
316
436
134
68
54
54
54
289
294
262
100
41
Best forecast wave conditions in Humboldt County
Rating
(10 max)
3
4
3
4
4
4
4
4
5
5
4
4
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
4
4
3
4
4
5
5
4
4
4
4
4
4
Header Global
Rating
(10 max)
4
4
4
5
4
4
4
4
4
4
4
4
4
4
5
5
4
4
4
5
5
5
4
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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