Big River surfForecast / CAL – Mendocino County / USA

information circle16 Day Weather and Surf, issued 4 am Thursday 23 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 Thursday (Apr 23) at 8PM. The primary swell is predicted to be 1.9m and 7s period with a secondary swell of 1.0m and 13s. Another secondary swell of 0.8m and 16s is also forecast. 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 1.9m 13s and forecast to arrive on Thursday (Apr 23) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 23rd Apr)6ft (1.9m) 7s
Best Surf 8PM (Wed 29th Apr)4.5ft (1.4m) 16s
Most Powerful11AM (Thu 23rd Apr)6ft (1.9m) 13s

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 12°C on Sat afternoon, min 8°C on Thu morning). Wind will be generally light.

Days 4-6 Weather Summary

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

Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
3
2
1
1
1
1
2
1
2
3
1
1
2
1
1
2
0
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>
Wave
Height (m)
Direction
Period (s)
1.9
NW
13
1.2
WNW
13
1.8
NW
8
1.7
NW
9
1.6
NW
9
1.4
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
1.1
NW
9
0.9
WNW
12
0.9
NW
20
1.1
NW
18
1.4
NW
16
1.4
NW
15
Wave Graph
Metric surfscale
Energy kJ
1200
458
395
471
393
321
211
225
362
400
501
465
330
304
218
176
211
552
711
1057
881
Wind (km/h)
15
NW
25
NW
5
N
10
WNW
15
NW
10
NW
10
W
10
W
5
NNW
10
WNW
15
WNW
10
E
10
WNW
20
NNW
5
E
10
NW
10
NW
5
SE
15
SW
10
W
10
NNW
cross
cross
cross-off
cross
cross
cross
cross-on
cross-on
glassy
cross-on
cross
cross-off
cross
cross-off
glassy
cross
cross
cross
on
cross-on
cross-off
High Tide
6:49PM1.25m
5:07AM1.52m
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
Low Tide
11:26AM-0.23m
11:21PM0.84m
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
clear
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:26
6:24
6:22
6:22
6:20
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:00
8:00
8:01
8:02
8:04
8:05
8:06
Temp °C
11
11
10
11
11
10
11
12
12
12
12
11
12
12
11
13
13
12
12
12
11
8
7
7
8
8
7
10
10
11
10
8
9
9
9
9
11
11
11
10
10
9
Swell 1
Height (m)
Direction
Period (s)
1.9
NW
13
1.2
WNW
13
1.6
NW
7
1.7
NW
9
0.7
NW
12
1.4
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
WNW
13
1
WNW
12
1.1
NW
8
1.1
NW
9
1.1
NW
6
1.2
NW
7
1.1
NW
18
1.4
NW
16
1.4
NW
15
Energy kJ
1200
458
253
471
137
321
211
183
180
153
501
465
330
304
149
176
94
139
711
1057
881
Swell 2
Height (m)
Direction
Period (s)
0.5
S
16
0.7
S
16
0.9
WNW
12
0.8
WNW
12
0.6
S
15
0.6
S
14
0.6
WNW
14
0.7
WNW
15
0.9
WNW
16
1
WNW
14
1.1
NW
8
1.1
NW
9
1.1
NW
9
1.1
NW
9
0.9
WNW
12
0.8
WNW
11
0.9
WNW
12
0.9
NW
20
0.8
WNW
11
0.3
SW
12
0.5
WNW
10
Energy kJ
129
249
264
184
150
148
165
225
362
400
149
168
172
172
218
160
211
552
149
23
56
Swell 3
Height (m)
Direction
Period (s)
0.3
SSW
11
0.3
SSW
11
0.7
NNW
10
0.6
S
15
0.5
W
16
0.6
WNW
11
0.5
S
13
0.5
S
13
0.5
S
13
0.4
S
13
0.4
S
12
0.4
S
12
0.4
S
12
0.4
S
12
0.3
S
11
0.4
SW
13
0.3
S
11
0.8
WNW
11
0.4
SW
16
0.3
SW
15
0.3
SW
15
Energy kJ
24
24
92
153
129
79
88
87
85
51
46
46
45
46
21
45
22
157
62
35
33
Wind waves
Height (m)
Direction
Period (s)
1.9
NW
7
1.8
NW
8
1.6
NW
9
0.8
NW
6
0.8
NW
6
1.3
NW
8
1.7
NW
10
1.8
NW
7
Energy kJ
331
395
393
54
53
186
599
308
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
2
1
2
1
1
2
2
2
3
1
1
2
2
1
2
3
4
3
Distance (km)
111
304
0
123
277
13
160
277
0
190
183
0
202
304
0
85
304
7
57
29
0
Best forecast wave conditions in Mendocino County
Rating
(10 max)
3
3
3
3
2
3
4
4
Best forecast wave conditions in United States
Rating
(10 max)
3
2
3
3
3
3
3
3
3
3
3
3
3
1
2
2
2
4
4
4
4
Header Global
Rating
(10 max)
5
5
5
5
4
4
4
4
6
6
8
5
6
6
4
6
9
5
8
5
6
  • 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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