Cape Mendocino surfForecast / CAL – Humboldt / USA

information circle48hr Weather and Surf, issued 4 pm Thursday 21 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
8.5° C
(Which is 3.6°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 11PM is: 0.5m 15s primary swell from a Southwest direction (forecast issued at 04:00pm May 21). An open ocean swell of 2.5m 9s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (PDT) & DateWave HeightWave Period
Morning (21 May)--
Afternoon (21 May)4ft (1.2m)11s
Evening (21 May)8ft (2.5m)9s

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 15°C on Thu afternoon, min 10°C on Fri night). Wind will be generally light.

Thu
21
Friday
22
Saturday
23
Sun
24
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
2 AM
5 AM
8 AM
11 AM
Rating
(10 max)
0
0
2
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
1
1
2
1
1
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.3
WNW
11
0.9
WNW
11
2.5
NW
9
0.5
SW
15
0.5
SW
15
0.6
SSW
15
0.5
SW
15
0.5
SW
18
0.5
SW
18
0.5
SW
18
0.5
SW
18
0.5
SW
15
2.1
NW
9
0.9
WNW
10
0.9
WNW
10
0.6
SW
16
0.8
WNW
10
0.7
SW
16
0.7
SW
16
0.7
SW
16
0.7
SW
16
0.7
SW
16
0.8
WNW
16
0.8
WNW
16
Wave Graph
Metric surfscale
Energy kJ
375
183
1105
116
116
156
112
154
154
154
152
106
639
178
168
198
125
255
255
258
258
258
330
322
Wind (km/h)
25
NNW
25
NNW
20
N
20
N
20
N
25
N
25
N
25
NNW
25
NNW
30
N
25
N
20
N
15
N
15
NNW
10
N
15
NW
15
NNW
15
NNW
15
N
10
N
5
SSW
15
S
15
S
20
S
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross
cross-on
cross-on
cross
cross
cross
glassy
cross
cross
cross
High Tide
5:15PM1.44m
3:42AM1.58m
6:08PM1.50m
4:56AM1.41m
6:56PM1.57m
6:17AM1.27m
Low Tide
10:35PM0.85m
11:07AM-0.19m
11:58PM0.75m
12:04PM-0.03m
1:13AM0.58m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:31
8:32
8:34
8:35
Temp °C
14
15
13
12
11
11
13
14
14
14
12
11
10
10
11
12
12
12
11
10
10
10
11
13
9
10
9
9
7
6
9
9
9
9
7
7
7
7
9
9
9
9
8
8
9
7
8
9
Swell 1
Height (m)
Direction
Period (s)
1.3
WNW
11
0.9
WNW
11
0.5
SW
15
2.5
NNW
9
3
NNW
9
3
NNW
9
3
NNW
10
0.5
SW
18
0.5
SW
18
0.5
SW
18
0.7
NW
10
0.5
SW
15
2.1
NW
9
0.9
WNW
10
1.9
NNW
8
1.8
NNW
8
1.5
NNW
7
0.9
WNW
10
1.5
NNW
8
1.3
NNW
7
1.3
NNW
7
1.3
NNW
8
1.4
NNW
8
1.3
NNW
8
Energy kJ
375
183
115
1279
1388
1388
1559
154
154
154
112
106
639
178
476
392
224
148
240
193
193
199
219
215
Swell 2
Height (m)
Direction
Period (s)
0.5
SW
19
0.5
SW
15
0.4
S
13
0.5
SW
15
0.5
SW
15
0.6
SSW
15
0.5
SW
15
0.5
SW
15
0.5
SW
15
0.5
SW
15
0.5
SW
18
0.4
S
13
0.5
SW
15
0.5
SW
15
0.9
WNW
10
0.9
WNW
10
0.8
WNW
10
0.7
SW
16
0.8
WNW
10
0.8
WNW
9
0.8
WNW
9
0.8
WNW
9
0.8
WNW
16
0.8
WNW
16
Energy kJ
184
112
54
116
116
156
112
109
109
110
152
50
109
109
168
171
125
255
117
110
108
108
330
322
Swell 3
Height (m)
Direction
Period (s)
0.4
SW
15
0.4
S
13
0.2
SSW
20
0.4
S
13
0.4
S
13
0.4
S
13
0.4
SW
18
0.4
S
13
0.4
S
13
0.4
S
13
0.5
SW
15
0.4
SW
18
0.4
S
12
0.4
S
13
0.6
SSW
15
0.6
SW
16
0.7
N
8
0.4
S
13
0.7
SW
16
0.7
SW
16
0.7
SW
16
0.7
SW
16
0.8
WNW
9
0.8
WNW
10
Energy kJ
79
55
37
54
54
53
111
51
51
51
104
79
49
50
156
198
58
52
255
258
258
258
108
103
Wind waves
Height (m)
Direction
Period (s)
2.2
NNW
9
2.5
NNW
9
2.5
NW
9
3
NNW
10
3
NNW
9
3
NNW
9
2.5
NNW
9
2.5
NNW
9
1.3
N
9
2.1
NNW
8
1.5
NNW
8
Energy kJ
766
990
1105
1684
1411
1254
1032
997
257
583
247
Nearest Offshore or Glassy
Rating
(10 max)
2
3
4
4
4
3
3
3
3
3
3
4
4
3
3
2
1
2
2
3
2
2
2
2
Distance (km)
294
51
41
41
41
51
51
51
54
51
54
40
51
40
40
191
151
51
51
40
0
21
21
152
Best forecast wave conditions in Humboldt County
Rating
(10 max)
3
4
4
4
3
3
3
3
3
3
4
4
3
3
2
2
3
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
3
3
4
4
4
3
3
3
3
3
3
4
4
3
3
3
3
2
2
3
3
3
3
3
Header Global
Rating
(10 max)
5
4
5
7
7
7
6
5
7
5
5
6
7
8
7
6
5
5
5
5
5
6
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)
Map placeholder

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