Big River surfForecast / CAL – Mendocino County / USA

information circle16 Day Weather and Surf, issued 4 am Saturday 25 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 8PM. The primary swell is predicted to be 0.7m and 16s period with a secondary swell of 1.1m and 9s. 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 3.5m 10s and forecast to arrive on Friday (May 01) at 11PM. 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+) 8PM (Sat 25th Apr)2.5ft (0.7m) 16s
Best Surf11PM (Wed 29th Apr)4.5ft (1.3m) 15s
Most Powerful11PM (Fri 1st May)11ft (3.5m) 10s

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 morning, min 9°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 13°C on Thu afternoon, min 8°C on Wed night). Wind will be generally light.

Saturday
25
Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
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)
0
1
2
1
1
2
2
2
2
1
1
2
1
2
4
3
2
3
2
2
4
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)
1.1
NW
9
1.2
NW
9
0.9
WNW
16
1
WNW
14
1.1
WNW
14
1.1
WNW
13
1.3
NW
10
1.4
NW
9
0.9
WNW
12
1.3
NW
8
0.9
WNW
12
0.6
WNW
20
0.9
WNW
18
1.2
NW
16
1.3
WNW
15
2.3
NW
8
3.5
NW
8
3
NW
8
2.5
NW
9
3
NW
9
3
NW
10
Wave Graph
Metric surfscale
Energy kJ
202
225
362
400
501
427
320
328
218
181
222
253
541
748
711
659
1701
1252
937
1202
1823
Wind (km/h)
10
WSW
10
SW
5
NNE
15
WNW
20
NW
10
NW
15
WNW
20
NW
5
E
10
NW
15
NW
5
ENE
15
NW
25
NW
10
NNW
15
NW
25
NW
20
NNW
15
NW
20
NW
15
NNW
on
on
glassy
cross
cross
cross
cross
cross-off
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
cross
cross
cross-off
High Tide
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
12:30PM1.23m
11:28PM1.73m
Low Tide
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
5:54AM-0.16m
5:18PM0.61m
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:22
6:22
6:20
6:18
6:18
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:01
8:02
8:04
8:05
8:06
8:07
8:07
Temp °C
12
12
12
12
12
11
12
12
10
12
12
11
12
12
10
11
13
11
12
12
11
10
9
11
9
8
7
9
8
7
9
8
9
8
8
6
8
9
7
9
8
9
Swell 1
Height (m)
Direction
Period (s)
1.1
NW
9
1.2
NW
9
1.1
NW
8
1.2
NW
8
1.1
WNW
14
1.1
WNW
13
1
WNW
12
1
WNW
12
1.2
NW
7
1.3
NW
8
0.9
WNW
12
1.5
NW
7
0.9
WNW
18
1.2
NW
16
1.3
WNW
15
1.3
WNW
14
0.3
SW
14
1
WNW
13
1.7
WNW
13
2.1
NW
12
1
WNW
12
Energy kJ
202
225
149
191
501
427
320
304
147
181
222
237
541
748
711
635
33
368
904
1202
299
Swell 2
Height (m)
Direction
Period (s)
0.5
WNW
15
0.7
WNW
15
0.9
WNW
16
1
WNW
14
0.4
S
12
0.4
S
12
0.4
S
12
0.4
S
12
0.9
NNW
6
0.8
WNW
11
0.4
NNW
9
0.8
WNW
11
0.8
WNW
11
0.3
SW
15
0.4
SW
15
0.4
SW
14
0.2
S
11
0.3
SW
14
0.3
SW
13
0.3
SW
13
0.2
WSW
13
Energy kJ
121
225
362
400
46
46
45
46
58
160
32
154
128
35
75
54
9
29
28
27
17
Swell 3
Height (m)
Direction
Period (s)
0.5
S
13
0.5
S
13
0.5
S
13
0.4
S
13
0.3
SW
15
0.3
SW
15
0.3
SW
15
0.3
SW
15
0.9
WNW
12
0.4
SW
13
0.3
S
11
0.6
WNW
20
0.3
SW
16
0.3
SW
12
0.2
S
15
0.2
S
11
0.2
S
13
0.2
S
13
0.1
S
11
0.2
S
12
0.2
S
12
Energy kJ
88
87
85
51
33
33
34
36
218
45
22
253
38
23
17
9
14
14
2
11
11
Wind waves
Height (m)
Direction
Period (s)
1.1
NW
8
1.4
NW
9
1.3
NW
10
1.4
NW
9
1.2
NW
7
1.5
NW
8
2.1
NW
8
2.2
NW
8
2.3
NW
8
3.5
NW
8
3
NW
8
2.5
NW
9
3
NW
9
3
NW
10
Energy kJ
165
307
296
328
152
270
496
545
659
1701
1252
937
1162
1823
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
2
2
3
2
2
2
1
1
2
2
2
4
4
2
3
4
2
4
Distance (km)
160
304
0
84
1005
13
111
305
0
111
739
0
160
304
0
129
669
59
160
304
0
Best forecast wave conditions in Mendocino County
Rating
(10 max)
3
3
2
3
4
3
4
Best forecast wave conditions in United States
Rating
(10 max)
3
2
3
3
3
3
3
2
2
3
1
3
2
2
4
4
3
4
4
3
4
Header Global
Rating
(10 max)
4
5
7
7
8
6
6
5
5
5
6
5
7
5
5
4
6
5
6
4
4
  • 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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