Big River surfForecast / CAL – Mendocino County / USA

information circle48hr Weather and Surf, issued 4 am Monday 11 May 2026 PDT
Forecast update in hr  min  s Forecast update imminent
Big River surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Big River sea temperature is
12.5° C
(Which is slightly warmer than usual)

How big are the waves at Big River today?

The current surf forecast for Big River at 11AM is: 2.1m 11s primary swell from a Northwest direction and 0.8m 16s secondary swell from a South-southwest direction, 1.6m 7s secondary swell from a Northwest direction (forecast issued at 04:00am May 11). The wind direction is predicted to be cross-shore.

Time (PDT) & DateWave HeightWave Period
Morning (11 May)7ft (2.1m)11s
Afternoon (11 May)5ft (1.5m)11s
Evening (11 May)5ft (1.5m)11s

Table - waves today at Big River. (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 Mon morning, min 8°C on Wed night). Wind will be generally light.

Monday
11
Tuesday
12
Wednesday
13
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)
3
3
4
3
2
2
2
4
4
3
3
1
0
1
2
2
3
2
2
1
1
1
1
3
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.5
WNW
12
2.1
NW
8
2.1
NW
11
2.1
NW
11
1.5
WNW
11
1.5
WNW
11
1.5
WNW
11
2
WNW
11
1.9
WNW
11
1.8
WNW
11
1.4
WNW
11
1.3
WNW
11
1.2
WNW
11
1.1
WNW
11
1.1
WNW
11
1.2
WNW
12
1.4
WNW
12
1.5
WNW
11
1.2
WNW
11
1.3
WNW
11
1.6
WNW
12
1.6
WNW
12
1.6
WNW
12
2.4
WNW
12
Wave Graph
Metric surfscale
Energy kJ
583
478
1065
1027
550
515
515
906
878
759
447
380
319
270
280
380
514
531
356
438
781
755
743
1483
Wind (km/h)
10
NNW
10
N
5
NNW
10
NW
15
NW
10
NW
5
WNW
0
WNW
0
WNW
0
WNW
5
NNW
15
NW
20
NW
20
NNW
10
NNW
0
N
5
NNW
10
NW
15
NNW
20
NW
20
NW
25
NW
25
NNW
15
NNW
cross-off
cross-off
cross-off
cross
cross
cross
cross
glassy
glassy
glassy
cross-off
cross
cross
cross-off
cross-off
glassy
glassy
cross
cross-off
cross
cross
cross-off
cross-off
cross-off
High Tide
6:54AM1.20m
8:13PM1.46m
8:08AM1.20m
8:41PM1.59m
9:15AM1.22m
9:12PM1.74m
Low Tide
1:28AM0.66m
1:19PM0.16m
2:23AM0.44m
2:01PM0.24m
3:11AM0.19m
2:43PM0.34m
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
cloud
cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:16
8:17
8:19
Temp °C
11
10
12
14
14
14
12
11
11
11
11
13
13
13
12
11
12
12
12
12
12
12
11
11
9
8
11
12
12
12
11
11
11
11
10
10
10
9
10
10
11
11
9
8
8
7
6
8
Swell 1
Height (m)
Direction
Period (s)
1.5
WNW
12
0.9
SSW
17
2.1
NW
11
2.1
NW
11
1.5
WNW
11
1.5
WNW
11
1.5
WNW
11
2
WNW
11
1.9
WNW
11
1.8
WNW
11
1.4
WNW
11
1.3
WNW
11
1.2
WNW
11
1.1
WNW
11
1.1
WNW
11
1.2
WNW
12
1.4
WNW
12
1.5
WNW
11
1.2
WNW
11
1.3
WNW
11
1.6
WNW
12
1.6
WNW
12
1.6
WNW
12
0.5
SSW
13
Energy kJ
583
432
1065
1027
550
515
515
906
878
759
447
380
319
270
280
380
514
531
356
438
781
755
743
102
Swell 2
Height (m)
Direction
Period (s)
0.7
SW
15
0.1
SW
11
0.8
SSW
16
0.8
SSW
16
1.2
NW
7
1.2
NW
7
1.2
NW
7
0.9
SSW
16
0.8
SSW
16
0.7
SSW
15
0.7
SSW
15
0.7
SSW
15
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.7
SSW
14
0.9
WNW
13
0.8
WNW
13
0.7
SSW
14
0.6
SSW
14
0.5
SSW
14
0.4
SSW
18
Energy kJ
226
5
326
291
128
128
124
402
322
207
196
188
242
242
242
242
242
186
290
239
166
123
104
104
Swell 3
Height (m)
Direction
Period (s)
0.5
S
18
0.1
S
14
0.1
SW
11
0.1
S
14
0.8
SSW
16
0.8
SSW
16
0.9
SSW
16
0.1
S
16
0.1
S
12
0.3
S
17
0.2
S
18
0.2
S
17
0.2
S
14
0.2
S
14
0.1
S
14
0.1
S
11
0.2
S
11
0.3
W
15
0.6
SSW
14
0.6
SSW
14
0.3
SSW
19
0.3
SSW
18
0.4
SSW
18
0.2
S
12
Energy kJ
160
4
5
4
291
291
402
5
3
52
25
24
16
16
4
2
10
38
138
125
72
64
124
11
Wind waves
Height (m)
Direction
Period (s)
1.8
NW
7
2.1
NW
8
1.6
NW
7
1.4
NW
7
1.4
NW
7
1.4
NW
7
1.3
NW
6
1.1
NW
6
1
NW
6
0.9
NW
5
1.1
NW
5
1.1
NW
5
0.8
NW
5
0.8
NW
4
0.8
NW
4
0.9
NW
4
0.9
WNW
5
0.9
WNW
5
1.2
NW
5
1.6
NW
6
2.4
WNW
12
Energy kJ
296
478
289
205
189
178
150
72
60
47
60
62
37
22
20
34
39
39
67
171
1483
Nearest Offshore or Glassy
Rating
(10 max)
3
3
4
3
3
3
4
4
4
3
3
2
2
1
2
2
3
2
3
3
2
1
2
4
Distance (km)
0
0
0
85
155
29
13
0
0
0
0
160
160
277
0
0
0
43
190
279
304
305
277
29
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
4
4
3
4
4
4
3
3
3
3
3
3
4
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
3
3
3
4
4
4
3
3
3
3
2
3
4
3
3
3
3
2
2
3
4
Header Global
Rating
(10 max)
5
4
5
9
5
5
9
5
9
9
8
9
9
8
6
8
7
6
6
9
9
5
9
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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