Big River surfForecast / CAL – Mendocino County / USA

information circle48hr Weather and Surf, issued 10 am Friday 15 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
11.9° 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 3PM is: 3.5m 8s primary swell from a Northwest direction and 0.8m 15s secondary swell from a South-southwest direction, 0.2m 18s secondary swell from a South direction (forecast issued at 10:00am May 15). The wind direction is predicted to be cross-offshore.

Time (PDT) & DateWave HeightWave Period
Morning (15 May)7.5ft (2.3m)7s
Afternoon (15 May)11ft (3.5m)8s
Evening (15 May)11ft (3.5m)8s

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 Sun afternoon, min 9°C on Sun night). Winds decreasing (near gales from the NW on Sat afternoon, light winds from the N by Sun night).

Friday
15
Saturday
16
Sunday
17
Mon
18
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
2 AM
5 AM
Rating
(10 max)
2
0
1
0
1
2
1
1
2
1
0
0
0
1
1
1
2
0
0
0
2
3
4
4
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)
2.1
NW
7
2.5
NW
7
3.5
NW
8
3.5
NW
8
3.5
NW
8
3
NW
8
2.5
NW
8
2.5
NW
8
1.3
WNW
14
3.5
NW
8
4
NW
8
4.5
NW
9
4.5
NW
9
4
NW
9
4.5
NW
9
4.5
NW
10
4.5
NW
10
4.5
NW
10
4.5
NW
10
5
NW
10
4
NW
9
3.5
NW
9
3
NW
9
3
NW
9
Wave Graph
Metric surfscale
Energy kJ
472
735
1412
1742
1608
1109
820
756
735
1289
1925
3083
3325
2987
3330
3694
4020
4105
4057
4095
2856
1794
1457
1386
Wind (km/h)
20
NNW
35
NNW
45
NW
45
NW
40
NNW
35
NNW
35
NNW
40
NNW
35
NNW
45
NW
50
NW
55
NW
45
NNW
45
NNW
40
NNW
35
NNW
40
NNW
45
NNW
55
NW
55
NNW
35
NNW
20
NNW
15
N
10
N
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-off
cross-off
cross-off
cross-off
High Tide
11:18AM1.28m
10:23PM1.99m
12:15PM1.30m
11:04PM2.06m
1:13PM1.30m
11:49PM2.08m
Low Tide
4:07PM0.54m
5:30AM-0.47m
4:51PM0.62m
6:19AM-0.58m
5:38PM0.70m
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:00
5:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:21
8:22
8:22
8:23
Temp °C
10
12
12
12
12
11
10
11
11
11
11
11
11
10
10
10
10
12
13
14
13
11
9
9
5
5
3
2
3
3
2
3
4
2
0
-1
1
1
1
2
1
2
2
3
6
6
5
6
Swell 1
Height (m)
Direction
Period (s)
1
WNW
9
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.7
SSW
15
1.1
WNW
15
1.2
WNW
14
1.3
WNW
14
1.3
WNW
14
0.6
SSW
14
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
0.4
SSW
13
0.4
SSW
13
Energy kJ
166
259
252
296
228
530
561
630
702
158
163
167
165
165
165
165
120
106
101
62
60
60
59
59
Swell 2
Height (m)
Direction
Period (s)
0.8
SSW
15
0.7
WNW
16
0.2
S
18
0.1
S
10
0.1
S
10
0.7
SSW
15
0.7
SSW
15
0.4
SSW
15
0.6
SSW
14
0.3
S
16
0.3
S
16
0.1
SW
19
0.1
SW
19
0.1
S
20
0.1
S
20
0.1
SW
18
0.1
SW
18
0.1
SW
18
0.2
SSW
18
0.2
S
18
0.2
S
18
0.1
SW
18
0.2
SSW
18
Energy kJ
270
234
25
2
2
231
246
87
158
46
46
15
14
7
7
13
12
12
31
25
25
13
32
Swell 3
Height (m)
Direction
Period (s)
0.4
WNW
17
0.1
S
11
0.1
S
11
0.1
S
11
0.1
W
20
0.4
SSW
13
0.3
S
16
0.1
SW
20
0.1
S
20
0.1
S
19
0.2
S
18
0.1
SW
18
0.1
SW
18
0.2
S
18
0.2
S
18
Energy kJ
117
2
2
2
7
60
46
15
7
7
25
12
12
24
24
Wind waves
Height (m)
Direction
Period (s)
2.1
NW
7
2.5
NW
7
3.5
NW
8
3.5
NW
8
3.5
NW
8
3
NW
8
2.5
NW
8
2.5
NW
8
2.5
NW
7
3.5
NW
8
4
NW
8
4.5
NW
9
4.5
NW
9
4
NW
9
4.5
NW
9
4.5
NW
10
4.5
NW
10
4.5
NW
10
4.5
NW
10
5
NW
10
4
NW
9
3.5
NW
9
3
NW
9
3
NW
9
Energy kJ
472
735
1412
1742
1608
1109
820
756
735
1289
1925
3083
3325
2987
3330
3694
4020
4105
4057
4095
2856
1794
1457
1386
Nearest Offshore or Glassy
Rating
(10 max)
3
2
3
3
3
3
3
4
2
3
1
1
1
4
4
3
2
5
4
4
5
4
4
4
Distance (km)
59
202
304
303
303
59
235
235
277
303
305
305
305
303
303
277
277
197
303
304
304
39
0
0
Best forecast wave conditions in Mendocino County
Rating
(10 max)
3
3
4
4
4
Best forecast wave conditions in United States
Rating
(10 max)
4
4
3
3
3
4
4
5
4
4
3
3
4
4
6
9
9
7
4
4
5
8
5
4
Header Global
Rating
(10 max)
6
5
5
5
5
5
4
5
6
5
5
5
4
5
6
9
9
7
4
4
5
8
7
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

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