Big River surfForecast / CAL – Mendocino County / USA

information circle48hr Weather and Surf, issued 4 am Sunday 17 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
10.7° C
(Which is 1.4°C colder than average for this time of year)

How big are the waves at Big River today?

The current surf forecast for Big River at 11AM is: 4.5m 10s primary swell from a Northwest direction and 0.5m 14s secondary swell from a South direction, 0.1m 18s secondary swell from a Southwest direction (forecast issued at 04:00am May 17). The wind direction is predicted to be cross-offshore.

Time (PDT) & DateWave HeightWave Period
Morning (17 May)13ft (4.0m)10s
Afternoon (17 May)16ft (5.0m)10s
Evening (17 May)11ft (3.5m)9s

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 15°C on Tue morning, min 10°C on Sun morning). Winds decreasing (strong winds from the NNW on Sun afternoon, light winds from the N by Mon morning).

Sunday
17
Monday
18
Tuesday
19
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)
1
1
1
0
0
0
2
4
4
3
4
2
2
2
3
4
4
4
4
2
3
2
4
4
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
4
NW
9
4
NW
9
4
NW
10
4.5
NW
10
5
NW
10
4.5
NW
10
4
NW
9
3.5
NW
10
3
NW
10
2.5
NW
10
2.4
NW
10
2.4
NW
9
2.5
NW
9
3.5
NW
9
3.5
NW
9
3
NW
9
2.5
NW
9
2.5
NW
9
2.5
NW
10
2.5
NW
10
1.6
WNW
14
2.5
NW
9
3
NW
9
2.5
NW
8
Wave Graph
Metric surfscale
Energy kJ
2511
2815
3103
3513
4095
4064
2663
1952
1864
1195
1023
1001
1198
1716
2073
1541
1176
1187
1264
1085
1028
1040
1104
975
Wind (km/h)
40
NNW
35
NNW
40
NNW
50
NNW
50
NNW
50
NNW
30
NNW
15
N
10
N
10
NNE
10
N
20
NW
25
NNW
30
NNW
25
NNW
15
NNW
10
N
10
N
10
NNW
15
NW
20
NNW
20
NW
10
NNW
10
NNW
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross-off
cross-off
High Tide
11:04PM2.06m
1:13PM1.30m
11:49PM2.08m
2:11PM1.29m
00:38AM2.04m
3:10PM1.29m
Low Tide
6:19AM-0.58m
5:38PM0.70m
7:10AM-0.61m
6:29PM0.76m
8:04AM-0.58m
7:26PM0.80m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:00
5:58
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:22
8:23
8:24
Temp °C
10
9
10
11
13
14
13
11
11
10
12
14
13
13
13
11
10
10
12
15
14
13
12
11
2
1
1
1
2
4
6
7
7
7
9
9
7
7
8
8
8
7
9
11
10
9
10
9
Swell 1
Height (m)
Direction
Period (s)
0.6
SSW
14
0.6
SSW
14
0.5
SSW
14
0.5
S
14
0.5
S
14
0.4
SSW
14
0.4
SSW
13
0.4
SSW
13
3
NW
10
2.5
NW
10
2.4
NW
10
0.3
SSW
13
0.4
WNW
18
0.6
WNW
18
0.9
WNW
16
1.2
WNW
16
1.4
WNW
16
2.5
NW
9
2.5
NW
10
1.5
WNW
14
1.6
WNW
14
1.5
WNW
14
1.6
WNW
13
1.4
WNW
13
Energy kJ
165
165
120
106
101
62
60
60
1537
1195
1023
34
124
207
452
683
945
1187
1264
886
1028
779
875
640
Swell 2
Height (m)
Direction
Period (s)
0.1
S
20
0.1
S
20
0.1
S
20
0.1
SW
18
0.1
SW
18
0.1
SW
18
0.2
S
18
0.2
S
18
0.4
SSW
13
0.4
SSW
13
0.4
SSW
13
0.3
WNW
19
0.3
SSW
13
0.3
S
16
0.3
S
16
0.3
SW
17
0.3
SW
17
1.4
WNW
15
1.4
WNW
14
0.4
S
15
0.4
S
15
0.4
SW
16
0.4
SW
16
0.4
SW
16
Energy kJ
7
7
7
12
12
12
25
25
59
59
58
72
34
46
46
47
45
829
796
70
69
69
96
69
Swell 3
Height (m)
Direction
Period (s)
0.1
S
19
0.1
S
18
0.1
SW
18
0.1
SW
18
0.1
SW
18
0.2
SSW
18
0.3
SW
18
0.3
S
17
0.3
S
16
0.4
NW
14
0.3
SW
17
0.3
S
16
0.3
S
16
0.3
SW
17
0.3
SW
16
0.4
SW
16
0.4
SW
16
0.3
S
15
0.3
S
15
0.3
S
15
Energy kJ
7
6
12
12
13
31
50
49
46
49
44
46
45
43
42
69
69
39
39
38
Wind waves
Height (m)
Direction
Period (s)
4
NW
9
4
NW
9
4
NW
10
4.5
NW
10
5
NW
10
4.5
NW
10
4
NW
9
3.5
NW
10
3
NW
10
1.8
NNW
9
2.4
NW
9
2.5
NW
9
3.5
NW
9
3.5
NW
9
3
NW
9
2.5
NW
9
2.5
NW
10
2.4
NW
9
2.5
NW
9
3
NW
9
2.5
NW
8
Energy kJ
2511
2815
3103
3513
4095
4064
2663
1952
1864
508
1001
1198
1716
2073
1541
1176
1085
939
1040
1104
975
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
4
4
4
5
4
4
3
4
2
2
1
2
4
4
4
4
4
3
3
4
4
Distance (km)
303
202
100
202
303
304
304
0
0
0
0
97
303
303
100
0
0
0
0
129
183
304
0
0
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in United States
Rating
(10 max)
7
4
8
6
4
4
5
6
5
4
5
4
4
3
4
4
4
4
4
4
3
3
4
4
Header Global
Rating
(10 max)
7
4
8
6
4
4
5
6
5
4
5
4
5
4
4
4
4
4
4
4
4
4
4
4
  • 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

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big River surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest