Big River surfForecast / CAL – Mendocino County / USA

information circle16 Day Weather and Surf, issued 4 pm Sunday 26 Apr 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
12.0° C
(Which is normal for this time of year)

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 Monday (Apr 27) at 5AM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 1.3m and 9s. 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 4.0m 9s and forecast to arrive on Friday (May 01) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Monday (Apr 27) at 8PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 27th Apr)4ft (1.2m) 13s
Best Surf 8AM (Sun 3rd May)11ft (3.5m) 10s
Most Powerful 5PM (Fri 1st May)13ft (4.0m) 9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 13°C on Tue morning, min 9°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 12°C on Wed afternoon, min 10°C on Wed night). Winds increasing (calm on Wed night, strong winds from the NW by Fri night).

Sun
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
1
Saturday
2
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
2
1
2
2
1
1
2
2
2
3
1
2
3
2
1
2
2
1
3
3
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.1
WNW
14
1.1
WNW
13
1
WNW
13
1.3
NW
10
0.8
WNW
12
0.8
WNW
11
0.8
WNW
12
1.5
NW
8
0.8
WNW
17
1.1
NW
16
1.2
WNW
14
1.3
WNW
13
3
NW
9
3
NW
9
3
NW
10
4
NW
9
3.5
NW
9
2.5
NW
9
4
NW
9
3.5
NW
10
2.1
WNW
11
Wave Graph
Metric surfscale
Energy kJ
501
427
330
327
177
157
180
270
386
587
561
596
1507
1475
1727
2645
1684
999
2494
2131
934
Wind (km/h)
20
NW
15
NW
15
WNW
20
NNW
10
E
10
NW
15
NW
5
NNE
15
WNW
15
NW
5
N
20
NW
25
NNW
20
NNW
25
NW
40
NNW
30
NNW
20
NW
25
NW
20
NNW
5
NW
cross
cross
cross
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
High Tide
9:05PM1.52m
8:59AM1.32m
9:37PM1.61m
9:59AM1.29m
10:07PM1.67m
10:53AM1.27m
10:34PM1.71m
11:43AM1.25m
11:01PM1.73m
12:30PM1.23m
11:28PM1.73m
1:15PM1.20m
11:56PM1.71m
Low Tide
2:19PM0.04m
3:06AM0.37m
3:02PM0.15m
3:56AM0.19m
3:40PM0.27m
4:39AM0.04m
4:15PM0.39m
5:17AM-0.08m
4:47PM0.51m
5:54AM-0.16m
5:18PM0.61m
6:30AM-0.20m
5:50PM0.70m
7:07AM-0.21m
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:20
6:18
6:18
6:16
6:15
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:02
8:04
8:05
8:06
8:07
8:07
8:08
8:09
Temp °C
12
11
12
11
10
13
12
11
12
12
11
12
12
11
12
12
11
11
11
11
11
9
7
9
6
6
10
8
9
9
9
9
8
7
6
7
5
3
7
7
7
9
Swell 1
Height (m)
Direction
Period (s)
1.1
WNW
14
1.1
WNW
13
1.1
NW
9
1
WNW
12
1.3
NW
6
1.2
NW
7
1.1
NW
7
1.5
NW
8
1.3
NW
8
1.2
NW
8
1.8
NW
8
2.1
NW
8
1.2
WNW
13
1.2
WNW
12
1.1
WNW
12
0.3
SW
13
0.2
WSW
13
1.4
WNW
12
0.2
SSW
12
0.5
WNW
18
2.1
WNW
11
Energy kJ
501
427
206
278
130
152
137
270
233
187
435
596
458
403
377
27
17
527
15
184
934
Swell 2
Height (m)
Direction
Period (s)
0.4
S
12
0.4
S
12
1
WNW
13
0.4
S
12
0.8
WNW
12
0.8
WNW
11
0.8
WNW
12
0.8
WNW
11
0.8
WNW
11
1.1
NW
16
1.2
WNW
14
1.3
WNW
13
0.3
SW
14
0.3
SW
14
0.3
SW
13
0.1
S
10
0.1
S
12
0.2
SSW
18
0.2
SSW
18
0.2
SSW
16
1.7
NNW
9
Energy kJ
46
46
330
45
177
157
180
154
143
587
561
545
33
29
28
2
3
31
31
25
480
Swell 3
Height (m)
Direction
Period (s)
0.3
SW
15
0.3
SW
15
0.4
S
12
0.3
SW
15
0.7
NW
9
0.4
SW
13
0.4
NNW
9
0.5
NW
19
0.8
WNW
17
0.8
WNW
10
0.3
SW
15
0.4
SW
14
0.2
S
11
0.2
S
13
0.1
S
11
0.1
SW
16
0.1
SW
18
0.2
WSW
13
0.2
WNW
21
0.1
SW
12
1
WNW
16
Energy kJ
33
33
45
36
77
45
32
184
386
118
33
54
9
14
2
10
12
18
43
6
499
Wind waves
Height (m)
Direction
Period (s)
1.1
NW
8
1.3
NW
9
1.3
NW
10
0.8
NNW
6
3
NW
9
3
NW
9
3
NW
10
4
NW
9
3.5
NW
9
2.5
NW
9
4
NW
9
3.5
NW
10
Energy kJ
165
287
327
40
1507
1475
1727
2645
1684
999
2494
2131
Nearest Offshore or Glassy
Rating
(10 max)
1
3
2
1
2
1
1
2
1
3
3
2
2
3
3
4
4
3
2
4
4
Distance (km)
306
19
129
944
0
111
183
0
202
82
0
202
304
59
183
304
59
305
635
82
23
Best forecast wave conditions in Mendocino County
Rating
(10 max)
3
2
3
4
3
4
4
Best forecast wave conditions in United States
Rating
(10 max)
3
3
3
1
2
2
2
3
3
3
4
3
2
4
3
4
4
3
3
4
4
Header Global
Rating
(10 max)
8
6
6
5
5
9
7
5
7
6
5
5
7
6
5
4
4
4
4
5
5
  • 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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