Big River surfForecast / CAL – Mendocino County / USA

information circle16 Day Weather and Surf, issued 4 pm Wednesday 29 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
12.5° C
(Which is slightly warmer than usual)

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 (Apr 29) at 11PM. The primary swell is predicted to be 1.2m and 15s period with a secondary swell of 2.0m and 8s. 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 1.9m 14s and forecast to arrive on Monday (May 04) at 5AM. 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+)11PM (Wed 29th Apr)4ft (1.2m) 15s
Best Surf 8PM (Sun 3rd May)5ft (1.5m) 15s
Most Powerful 5AM (Mon 4th May)6ft (1.9m) 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 Thu morning, min 9°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 13°C on Sun morning, min 10°C on Sat night). Wind will be generally light.

Wed
29
Thursday
30
Friday
1
Saturday
2
Sunday
3
Monday
4
Tuesday
5
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
3
2
1
3
1
1
2
2
2
3
1
2
3
2
2
3
2
0
1
1
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
NW
16
1.2
WNW
14
1.3
WNW
13
1.3
WNW
13
2.2
NW
8
2.1
NW
8
2.5
NW
8
2.3
NW
8
1.3
WNW
12
1.8
NW
9
1.8
NW
9
0.9
WNW
16
1.3
WNW
16
1.6
WNW
14
1.8
WNW
14
1.7
WNW
13
1.6
WNW
13
1.3
WNW
12
1.2
WNW
12
1.2
WNW
11
0.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
587
561
545
528
589
593
881
629
436
502
552
422
778
996
1314
1030
787
469
399
359
310
Wind (km/h)
20
NW
10
NNW
10
WNW
20
NW
10
NNW
20
NW
25
NW
20
NNW
15
NW
15
NW
5
ESE
10
SW
10
WSW
5
ESE
10
SW
10
WSW
5
NE
10
WNW
15
NW
10
NW
15
WNW
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross
cross
glassy
on
cross-on
glassy
on
on
glassy
cross
cross
cross
cross
High Tide
10:34PM1.71m
11:43AM1.25m
11:01PM1.73m
12:30PM1.23m
11:28PM1.73m
1:15PM1.20m
11:56PM1.71m
2:02PM1.17m
00:27AM1.67m
2:51PM1.14m
1:00AM1.62m
3:46PM1.11m
1:37AM1.55m
Low Tide
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
6:22PM0.77m
7:46AM-0.19m
6:56PM0.83m
8:28AM-0.14m
7:34PM0.88m
9:15AM-0.09m
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:16
6:15
6:13
6:13
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:06
8:07
8:07
8:08
8:09
8:10
8:12
8:13
Temp °C
12
10
13
12
11
12
13
11
12
12
11
13
13
13
13
13
13
12
13
11
12
8
8
11
8
9
9
9
8
9
9
9
11
10
12
10
10
12
9
10
9
10
Swell 1
Height (m)
Direction
Period (s)
1.1
NW
16
1.2
WNW
14
1.8
NW
8
1.3
WNW
13
1
WNW
13
1
WNW
13
1
WNW
13
1.3
WNW
12
1.3
WNW
12
1.2
WNW
12
1.8
NW
9
1.5
NW
9
1.4
NW
9
1.6
WNW
14
1.8
WNW
14
1.7
WNW
13
1.6
WNW
13
1.3
WNW
12
1.2
WNW
12
1.2
WNW
11
0.9
WNW
6
Energy kJ
587
561
373
528
330
346
335
517
436
359
552
349
314
996
1314
1030
787
469
399
359
59
Swell 2
Height (m)
Direction
Period (s)
0.7
WNW
10
0.3
SW
15
1.3
WNW
13
0.3
SW
14
0.3
SW
14
0.3
SW
13
0.3
SW
13
0.2
WSW
13
0.2
SSW
18
0.2
SSW
18
0.8
WNW
11
0.9
WNW
16
1.3
WNW
16
1.1
NW
9
0.5
SSW
15
0.7
SSW
16
0.5
SW
16
0.8
SSW
17
0.7
SW
14
0.7
SW
15
0.9
WNW
11
Energy kJ
94
33
545
33
29
28
27
17
31
31
160
422
778
168
123
220
127
377
214
226
173
Swell 3
Height (m)
Direction
Period (s)
0.3
SW
15
0.2
S
15
0.4
SW
14
0.2
S
11
0.2
S
13
0.2
S
11
0.1
S
10
0.2
S
12
0.3
SW
13
0.2
WNW
21
0.5
WNW
18
0.7
WNW
11
0.6
WNW
11
0.4
SSW
15
0.4
NNW
9
0.2
S
10
0.4
NNW
8
0.4
NNW
8
0.4
NNW
8
0.4
NNW
8
0.8
SSW
16
Energy kJ
35
17
54
9
14
9
2
11
28
44
193
107
87
85
26
8
28
25
23
26
310
Wind waves
Height (m)
Direction
Period (s)
1.9
NW
8
1.9
NW
8
2.1
NW
8
2.2
NW
8
2.1
NW
8
2.5
NW
8
2.3
NW
8
1.8
NW
8
1.8
NW
9
Energy kJ
413
447
502
589
593
881
629
354
502
Nearest Offshore or Glassy
Rating
(10 max)
1
3
2
2
3
4
3
4
1
3
3
3
3
3
4
4
3
1
2
3
2
Distance (km)
303
0
111
304
0
129
304
59
277
59
0
36
84
0
29
29
0
160
277
13
129
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
3
4
3
3
3
4
4
4
3
3
Best forecast wave conditions in United States
Rating
(10 max)
2
4
3
2
3
4
3
4
3
3
4
4
4
4
4
4
3
3
3
3
3
Header Global
Rating
(10 max)
6
5
6
7
5
5
5
7
4
4
4
5
5
4
5
5
5
5
5
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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