Big River surfForecast / CAL – Mendocino County / USA

information circle12 Day Weather and Surf, issued 4 pm Saturday 05 Jul 2025 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 slightly cooler than normal)


Best Forecast Surf Conditions for Big River this week:

The surf forecast for Big River over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jul 05) at 8PM. The primary swell is predicted to be 1.0m and 16s period with a secondary swell of 0.5m and 11s. Another secondary swell of 2.0m and 7s is also forecast. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Big River in the next 12 days are 3.5m 9s and forecast to arrive on Friday (Jul 11) at 8PM. 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 (Sat 5th Jul)3.5ft (1.0m) 16s
Best Surf 8PM (Thu 10th Jul)11ft (3.5m) 9s
Most Powerful 8PM (Fri 11th Jul)11ft (3.5m) 9s

Table - best surf conditions forecast for Big River over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Sat
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thu
17
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1
S
0.9
SSW
0.9
SSW
1.6
NW
1.6
NW
0.8
S
0.8
SSW
0.9
S
0.8
SSW
0.7
SSW
0.7
SSW
0.6
S
2.5
NW
2.5
NW
3
NW
3.5
NW
3
NW
3
NW
3.5
NW
3
NW
2.5
NW
2.3
NW
2
NW
2.1
NW
2
NW
1.2
WNW
1.7
NW
1.7
NW
1.9
NW
2.1
NW
2.2
NW
2.1
NW
2.1
NW
2.2
NW
3
NW
2.5
NW
Period(s) (?)161414891616151414141378899999988109109991010910101010
Wave
Graph
(?)Metric surfscale
Energy (?)79693265599974679571560245533142635477881714651975156717632231178813369298611001923571597548688975126911551622167940111557
Wind
(km/h)
20
NW
10
NNW
10
WNW
10
NW
10
SSE
20
SSW
10
SW
5
SSE
10
WSW
5
W
5
NNE
15
NW
20
NW
15
NNW
15
NW
20
NW
15
NNW
15
WNW
15
WNW
10
NNW
10
WSW
10
NW
10
NNW
10
WNW
10
WNW
0
SSE
10
SW
5
WSW
0
SW
5
WSW
10
WNW
5
SSE
10
WSW
10
NW
10
NNW
15
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
off
cross-
on
crosscross-
on
ononglassoncross-
on
cross-
off
crosscrosscross-
off
crosscrosscross-
off
crosscrosscross-
off
cross-
on
crosscross-
off
cross-
on
crossglassonglassglasscross-
on
crossglasscross-
on
crosscross-
off
cross
High Tide
/ height (m)
7:55PM
1.69
10:28AM
1.07
8:34PM
1.73
11:16AM
1.13
9:14PM
1.79
11:55AM
1.18
9:54PM
1.83
12:29PM
1.23
10:33PM
1.88
1:03PM
1.27
11:13PM
1.91
1:36PM
1.31
11:53PM
1.90
2:09PM
1.36
12:35AM
1.85
2:42PM
1.42
1:20AM
1.75
3:16PM
1.49
2:11AM
1.60
3:51PM
1.58
3:11AM
1.42
4:28PM
1.67
4:26AM
1.23
Low Tide
/ height (m)
3:26AM
0.09
2:01PM
0.88
4:08AM
-0.03
2:51PM
0.92
4:46AM
-0.12
3:38PM
0.93
5:23AM
-0.19
4:23PM
0.92
5:59AM
-0.25
5:05PM
0.91
6:34AM
-0.28
5:50PM
0.88
7:10AM
-0.28
6:37PM
0.85
7:45AM
-0.24
7:29PM
0.81
8:21AM
-0.15
8:28PM
0.74
8:56AM
-0.02
9:34PM
0.64
9:34AM
0.16
10:47PM
0.51
10:14AM
0.35
Sat
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thu
17
Sunrise--5:54--5:54--5:56--5:56--5:56--5:56--5:58--5:58--6:00--6:00--6:01--6:01
Sunset8:45--8:44--8:44--8:44--8:43--8:43--8:43--8:42--8:42--8:40--8:40--8:39--
clearclearclearpart cloudclearclearpart cloudpart cloudpart cloudclearclearclearclearclearclearclearclearclearpart cloudclearpart cloudpart cloudclearpart cloudpart cloudclearclearpart cloudclearpart cloudpart cloudpart cloudclearpart cloudclearpart cloud
Rain (mm)
------------------------------------
Temp. °C121113141212121112121313141315161414151213141314141313141214151314141213
Feels °C (?)881112111091010101210111112131112121112121113121311121113141213121110

Short Range Forecast: Mostly dry. Very mild (max 14°C on Sun afternoon, min 9°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 16°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light.

Days 6-9 Weather Summary Mostly dry. Very mild (max 15°C on Fri afternoon, min 11°C on Fri night). Wind will be generally light.

Long Range Forecast: Mostly dry. Very mild (max 15°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light.

  • 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 12 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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