Big River surfForecast / CAL – Mendocino County / USA

information circle48hr Weather and Surf, issued 4 pm Saturday 16 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
11.7° C
(Which is normal for this time of year)

How big are the waves at Big River today?

The current surf forecast for Big River at 7PM is: 4.5m 9s primary swell from a Northwest direction and 0.6m 15s secondary swell from a South-southwest direction, 0.1m 19s secondary swell from a Southwest direction (forecast issued at 04:00pm May 16). The wind direction is predicted to be cross-offshore.

Time (PDT) & DateWave HeightWave Period
Morning (16 May)--
Afternoon (16 May)13ft (4.0m)8s
Evening (16 May)15ft (4.5m)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 9°C on Sat night). Winds decreasing (near gales from the NW on Sat afternoon, light winds from the N by Mon morning).

Sat
16
Sunday
17
Monday
18
Tue
19
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
0
1
1
1
1
0
0
0
2
3
4
3
3
2
2
2
3
4
4
4
4
2
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)
3.5
NW
8
4.5
NW
9
4.5
NW
9
4
NW
9
4
NW
9
4
NW
10
4.5
NW
10
4.5
NW
10
4.5
NW
10
4.5
NW
10
4
NW
9
3
NW
10
3
NW
10
2.5
NW
10
2.5
NW
10
2.5
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
Wave Graph
Metric surfscale
Energy kJ
1679
3014
3022
2827
2856
3081
3504
3363
4057
3746
2663
1831
1707
1147
1085
1062
1198
1716
2073
1541
1176
1162
1264
1108
Wind (km/h)
50
NW
55
NW
45
NNW
45
NNW
40
NNW
35
NNW
40
NNW
50
NNW
50
NW
50
NNW
35
NNW
15
N
10
N
10
N
10
N
20
NW
25
NNW
25
NNW
25
NNW
15
N
10
N
10
N
10
N
20
NW
cross
cross
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-off
cross-off
cross
High Tide
12:15PM1.30m
11:04PM2.06m
1:13PM1.30m
11:49PM2.08m
2:11PM1.29m
00:38AM2.04m
Low Tide
4:51PM0.62m
6:19AM-0.58m
5:38PM0.70m
7:10AM-0.61m
6:29PM0.76m
8:04AM-0.58m
clear
clear
clear
part cloud
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
8:22
8:23
8:24
Temp °C
11
11
11
10
10
9
10
11
12
14
14
11
10
10
11
13
13
13
13
11
10
10
12
15
1
-1
1
1
2
1
1
1
1
4
7
7
7
7
8
8
8
8
8
8
7
7
9
11
Swell 1
Height (m)
Direction
Period (s)
0.6
SSW
14
0.6
SSW
15
0.6
SSW
14
0.6
SSW
14
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
2.5
NW
10
0.3
SSW
13
0.4
WNW
18
0.7
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
Energy kJ
163
167
165
165
165
165
120
106
101
62
60
60
1404
1147
1085
34
124
273
452
683
945
1162
1264
886
Swell 2
Height (m)
Direction
Period (s)
0.3
S
16
0.1
SW
19
0.1
SW
19
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
1.5
WNW
14
0.4
S
15
Energy kJ
46
15
14
7
7
7
12
12
12
25
25
59
59
58
72
34
46
46
47
45
829
899
70
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
19
0.1
S
20
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
0.3
SSW
13
0.3
SW
17
0.3
S
16
0.3
S
16
0.3
SW
17
0.3
SW
16
0.4
SW
16
Energy kJ
15
7
7
6
12
12
13
32
50
49
46
33
44
46
45
43
42
69
Wind waves
Height (m)
Direction
Period (s)
3.5
NW
8
4.5
NW
9
4.5
NW
9
4
NW
9
4
NW
9
4
NW
10
4.5
NW
10
4.5
NW
10
4.5
NW
10
4.5
NW
10
4
NW
9
3
NW
10
3
NW
10
2.5
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
Energy kJ
1679
3014
3022
2827
2856
3081
3504
3363
4057
3746
2663
1831
1707
1062
1198
1716
2073
1541
1176
1108
Nearest Offshore or Glassy
Rating
(10 max)
4
1
4
4
4
4
5
4
4
4
5
3
4
3
3
3
2
2
2
4
4
4
4
4
Distance (km)
304
305
304
303
303
235
202
202
303
304
304
39
0
0
0
295
303
304
303
0
0
0
0
160
Best forecast wave conditions in Mendocino County
Rating
(10 max)
3
4
4
3
4
4
4
4
Best forecast wave conditions in United States
Rating
(10 max)
4
2
4
4
6
9
9
7
4
4
5
7
5
4
5
4
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
5
5
4
4
6
9
9
7
4
4
5
7
5
4
5
4
4
4
4
5
5
4
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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