Big River surfForecast / CAL – Mendocino County / USA

information circle16 Day Weather and Surf, issued 10 am Tuesday 26 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
11.6° C
(Which is slightly cooler than normal)

Best Forecast Surf Conditions for Big River this week:

The surf forecast for Big River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (May 27) at 5AM. The primary swell is predicted to be 4.0m and 12s period with a secondary swell of 0.9m and 15s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Big River in the next 16 days are 4.5m 14s and forecast to arrive on Tuesday (May 26) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 27th May)13ft (4.0m) 12s
Best Surf 5AM (Wed 27th May)13ft (4.0m) 12s
Most Powerful 8PM (Tue 26th May)15ft (4.5m) 14s

Table - best surf conditions forecast for Big River over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Wed night. Very mild (max 14°C on Wed afternoon, min 9°C on Tue night). Winds decreasing (fresh winds from the NW on Tue night, calm by Thu afternoon).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 12°C on Fri morning, min 8°C on Sun night). Winds increasing (light winds from the NNW on Fri morning, fresh winds from the NNW by Sat night).

Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
Sunday
31
Monday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
4
2
2
2
3
4
4
3
2
3
0
0
1
1
2
4
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
NW
14
4.5
NW
14
4
NW
13
4
NW
12
3.5
NW
11
3
NW
10
1.7
WNW
18
2
WNW
17
2.2
WNW
16
2.4
WNW
14
2.4
NW
14
1.5
WNW
13
2.3
NW
8
3
NW
8
3
NW
8
2.5
NW
9
3
NW
9
2.4
NW
9
1.8
NW
10
1
SSW
18
1.1
SSW
17
Wave Graph
Metric surfscale
Energy kJ
5974
6742
5600
3718
3040
1522
1901
2215
2359
2346
2390
734
645
1132
931
1224
1609
858
623
651
742
Wind (km/h)
25
NW
35
NW
20
N
25
NW
15
NW
10
S
10
NW
5
WNW
10
N
15
WNW
25
NW
10
NNW
30
NW
30
NW
25
NNW
25
NW
30
NNW
10
N
20
NW
25
NNW
10
NNW
cross
cross
cross-off
cross
cross
cross-on
cross
glassy
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
High Tide
8:56AM1.11m
8:50PM1.70m
10:03AM1.11m
9:21PM1.74m
11:01AM1.13m
9:51PM1.76m
11:51AM1.15m
10:22PM1.77m
12:36PM1.17m
10:53PM1.77m
1:18PM1.18m
11:26PM1.75m
1:59PM1.19m
00:01AM1.73m
Low Tide
2:12PM0.42m
3:43AM0.05m
2:54PM0.56m
4:25AM-0.08m
3:32PM0.67m
5:03AM-0.17m
4:09PM0.75m
5:39AM-0.23m
4:45PM0.81m
6:14AM-0.25m
5:21PM0.85m
6:50AM-0.25m
5:57PM0.87m
clear
clear
clear
part cloud
clear
rain showers
clear
cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:50
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:30
8:30
8:31
8:32
8:34
8:34
8:35
1
Temp °C
12
13
12
12
14
13
13
14
13
12
12
11
11
11
11
11
11
11
11
11
10
7
7
5
7
11
12
13
12
12
9
9
8
5
5
4
6
5
6
7
6
6
Swell 1
Height (m)
Direction
Period (s)
4
NW
14
0.9
SSW
16
0.9
SSW
16
0.8
SSW
14
3.5
NW
11
3
NW
10
2.3
NW
10
2
WNW
17
2.2
WNW
16
2.4
WNW
14
2.4
NW
14
1.5
WNW
13
1.3
WNW
12
0.5
SSW
14
0.5
SSW
13
0.8
SSW
21
0.8
SSW
20
0.8
SSW
20
1.8
NW
10
1
SSW
18
1.1
SSW
17
Energy kJ
5974
353
429
239
3040
1522
968
2215
2359
2346
2390
734
466
107
101
511
500
485
614
651
742
Swell 2
Height (m)
Direction
Period (s)
0.9
SSW
16
0.8
SSW
14
1
WNW
21
1.7
WNW
18
1.8
NW
9
1.4
NW
9
0.6
SSW
14
0.6
SSW
14
0.5
SSW
14
0.5
SSW
14
0.2
SSW
24
0.4
SSW
22
0.3
SSW
13
0.4
SSW
16
0.5
SSW
16
1
SSW
18
0.4
SSW
14
0.1
S
14
Energy kJ
429
236
882
1901
564
307
145
154
110
104
54
185
32
102
153
623
82
4
Swell 3
Height (m)
Direction
Period (s)
0.2
WNW
24
0.8
SSW
14
0.6
SSW
14
0.6
SSW
14
0.6
SSW
14
0.1
S
21
0.1
S
26
0.2
SSW
19
0.2
SSW
19
0.3
SSW
18
0.3
SSW
13
0.3
SSW
13
0.5
SSW
15
0.1
S
13
Energy kJ
54
236
156
149
145
9
13
37
34
61
32
33
125
3
Wind waves
Height (m)
Direction
Period (s)
4.5
NW
14
4
NW
13
4
NW
12
2
NW
7
2.3
NW
8
3
NW
8
3
NW
8
2.5
NW
9
3
NW
9
2.4
NW
9
1.8
NW
10
2.1
NW
8
Energy kJ
6742
5600
3718
410
645
1132
931
1224
1609
858
566
496
Nearest Offshore or Glassy
Rating
(10 max)
7
3
4
3
4
4
4
4
4
2
1
3
2
1
4
3
2
4
3
2
3
Distance (km)
198
997
97
202
59
7
85
0
0
202
305
0
202
306
59
202
305
0
183
273
0
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
4
4
4
4
4
4
4
Best forecast wave conditions in United States
Rating
(10 max)
7
3
5
4
4
4
5
4
4
4
2
4
3
2
4
3
2
4
3
3
4
Header Global
Rating
(10 max)
6
7
9
6
9
9
6
5
5
5
5
4
7
7
6
4
4
5
4
4
9
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Big River Surf forecast

The above surf forecast table for Big River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big River can be found by selecting the local surf guide option on the grey menu. Our Big River surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Big River) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Big River may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Big River is 54 km (34 miles) from Ukiah. If you plan a vacation in Mendocino County, look for hotels and other accommodation in Ukiah. Ukiah has rooms for a wide range of budgets as well as car hire and transport links.

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