Big River surfForecast / CAL – Mendocino County / USA

information circle16 Day Weather and Surf, issued 4 am Friday 24 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
12.1° 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 Saturday (Apr 25) at 5AM. The primary swell is predicted to be 1.3m and 9s period with a secondary swell of 0.6m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Big River in the next 16 days are 1.5m 14s and forecast to arrive on Thursday (Apr 30) at 8AM. 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 (Sat 25th Apr)4.5ft (1.3m) 9s
Best Surf 5AM (Sun 26th Apr)3.5ft (1.0m) 16s
Most Powerful 8AM (Thu 30th Apr)5ft (1.5m) 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

Mostly dry. Very mild (max 13°C on Sun afternoon, min 9°C on Fri morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 12°C on Mon morning, min 9°C on Mon morning). Wind will be generally light.

Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
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
1
1
1
1
2
1
1
3
1
1
2
1
1
3
2
1
2
2
2
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>
Wave
Height (m)
Direction
Period (s)
1.7
NW
9
1.5
NW
9
1.3
NW
9
1.1
NW
9
0.7
WNW
15
0.9
WNW
16
1
WNW
14
1.1
WNW
14
1.2
WNW
13
1
WNW
13
1
WNW
12
0.9
WNW
12
0.8
WNW
11
1.5
NW
7
1.7
NW
8
0.9
NW
18
1.2
WNW
16
1.3
WNW
15
1.5
WNW
14
1.4
WNW
13
1.2
WNW
13
Wave Graph
Metric surfscale
Energy kJ
430
320
281
197
225
362
400
501
465
335
304
218
157
212
344
444
683
711
845
659
458
Wind (km/h)
10
WNW
15
NW
10
WNW
10
WSW
10
WSW
5
NNW
10
WNW
20
NW
5
NNE
10
WNW
20
NW
5
ENE
10
WNW
15
NW
10
NNE
10
WNW
15
NW
10
NW
15
WNW
15
NW
5
NNE
cross
cross
cross
on
cross-on
glassy
cross-on
cross
glassy
cross
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross
cross
cross
glassy
High Tide
7:44PM1.33m
6:31AM1.42m
8:29PM1.43m
7:50AM1.36m
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
Low Tide
12:31PM-0.14m
00:53AM0.73m
1:29PM-0.05m
2:07AM0.56m
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
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:24
6:22
6:22
6:20
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:00
8:01
8:02
8:04
8:05
8:06
8:07
Temp °C
11
11
11
12
12
12
12
13
11
12
12
10
12
12
11
12
12
10
11
12
11
8
7
9
10
9
11
11
9
8
9
8
7
9
9
10
9
9
7
8
9
9
Swell 1
Height (m)
Direction
Period (s)
1.7
NW
9
0.7
NW
12
1.3
NW
9
1.1
NW
9
1.1
NW
9
1.1
NW
8
1.1
NW
8
1.1
WNW
14
1.2
WNW
13
1.1
NW
9
1
WNW
12
1.3
NW
7
1.2
NW
7
0.8
WNW
12
1.7
NW
8
0.9
NW
18
1.2
WNW
16
1.3
WNW
15
1.5
WNW
14
1.4
WNW
13
1.2
WNW
13
Energy kJ
430
140
281
197
176
153
153
501
465
176
304
174
147
174
344
444
683
711
845
659
458
Swell 2
Height (m)
Direction
Period (s)
0.8
WNW
12
0.6
S
15
0.6
S
14
0.5
WNW
15
0.7
WNW
15
0.9
WNW
16
1
WNW
14
1.1
NW
8
1.2
NW
9
1
WNW
13
0.4
S
12
0.9
WNW
12
0.8
WNW
11
0.3
S
11
0.7
WNW
11
0.8
WNW
10
0.8
WNW
10
0.3
SW
15
0.4
SW
14
0.3
SW
14
0.3
SW
14
Energy kJ
184
150
148
121
225
362
400
145
215
335
46
218
157
22
109
141
118
33
54
33
29
Swell 3
Height (m)
Direction
Period (s)
0.6
S
15
0.5
W
16
0.6
WNW
11
0.6
WNW
11
0.5
S
13
0.5
S
13
0.4
S
13
0.4
S
12
0.4
S
12
0.4
S
12
0.3
SW
15
0.4
NNW
9
0.4
SW
13
0.3
SW
13
0.6
WNW
19
0.4
SW
16
0.3
SW
15
0.2
S
15
0.2
S
11
0.2
S
11
0.2
S
11
Energy kJ
153
129
79
78
87
85
51
46
46
45
36
35
45
28
251
62
35
17
9
9
9
Wind waves
Height (m)
Direction
Period (s)
1.5
NW
9
1.3
NW
9
1.5
NW
7
1.5
NW
8
1.5
NW
8
1.9
NW
7
1.4
NW
7
1.8
NW
6
1.8
NW
7
Energy kJ
320
255
212
277
277
392
192
271
309
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
1
2
2
3
2
3
2
2
2
1
1
3
2
2
3
2
3
3
Distance (km)
111
257
13
202
23
0
129
277
0
85
305
0
183
304
0
155
277
7
305
194
0
Best forecast wave conditions in Mendocino County
Rating
(10 max)
2
2
3
3
2
3
4
3
Best forecast wave conditions in United States
Rating
(10 max)
3
3
3
2
2
3
3
3
3
2
2
2
1
2
3
2
2
4
3
3
3
Header Global
Rating
(10 max)
5
5
5
4
4
5
5
8
6
6
5
6
7
9
5
6
5
5
9
7
7
  • 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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