Big River Surf Break

Lat Long: 39.30° N 123.80° W

Big River Surf Forecast and Surf Report

Issued: 4 am 07 Oct 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
13.9°C
0.3° 

Big River surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Big River surf forecast from 7 Oct 2026:

  • Best quality surf: Sunday 11 Oct, 8PM (local time) - 13ft (4.0m), 10s period, NW swell with cross-offshore winds.
  • Most powerful swell: Saturday 10 Oct, 5PM (local time) - 15ft (4.5m), 10s period, NW swell with 3,706 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 7 Oct, 8AM (local time) - 2.5ft (0.7m), 19s period with SSW swell.

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 (Oct 07) at 8AM. The primary swell is predicted to be 0.7m and 19s period with a secondary swell of 0.9m and 6s. Another secondary swell of 1.0m and 12s 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 4.5m 10s and forecast to arrive on Saturday (Oct 10) at 5PM. 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+) 8AM (Wed 7th Oct)2.5ft (0.7m) 19s
Best Surf 8PM (Sun 11th Oct)13ft (4.0m) 10s
Most Powerful 5PM (Sat 10th Oct)15ft (4.5m) 10s

Table - best surf conditions forecast for Big River over the next 16 days.


Short Range Forecast

Mostly dry. Very mild (max 18°C on Wed morning, min 12°C on Fri night). Winds increasing (calm on Wed night, fresh winds from the NNW by Fri night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Mon morning, min 10°C on Sat night). Winds decreasing (strong winds from the NW on Sat afternoon, calm by Sun night).

Wednesday
7
Thursday
8
Friday
9
Saturday
10
Sunday
11
Monday
12
Tuesday
13
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
4
3
4
4
2
2
2
2
0
3
4
3
3
3
4
4
3
3
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SSW
19
0.8
SSW
18
1.1
NW
16
1.9
NW
14
2.1
NW
13
2.1
NW
13
2.5
NW
10
3.5
NW
9
3.5
NW
9
4
NW
10
4.5
NW
10
3.5
NW
10
3
NW
10
4
NW
10
3
NW
11
1.5
WNW
18
1.3
WNW
16
1.5
WNW
16
1.3
WNW
14
1.2
SSW
18
1.3
WNW
14
Wave Graph
Metric surfscale
Energy kJ
315
404
573
1470
1474
1452
1245
2037
1792
2723
3706
2088
1887
3034
2038
1309
926
1054
732
877
621
Wind (km/h)
10
NW
10
NW
5
N
5
WNW
5
NW
10
NNW
15
NW
25
NNW
35
NNW
35
NNW
50
NW
20
N
10
NNW
15
NW
10
SE
5
SE
15
NNW
5
ENE
5
W
15
NW
10
NNE
Wind State
cross
cross
glassy
cross-on
glassy
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-on
cross
cross-off
High Tide
9:48AM1.63m
9:34PM1.66m
10:20AM1.73m
10:30PM1.63m
10:50AM1.80m
11:21PM1.58m
11:19AM1.85m
00:12AM1.51m
11:48AM1.86m
1:01AM1.45m
12:17PM1.84m
1:52AM1.38m
12:47PM1.80m
2:47AM1.31m
Low Tide
3:33PM0.47m
3:52AM0.13m
4:22PM0.30m
4:29AM0.25m
5:07PM0.15m
5:03AM0.38m
5:49PM0.04m
5:36AM0.52m
6:30PM-0.03m
6:09AM0.66m
7:10PM-0.04m
6:42AM0.78m
7:53PM-0.02m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:16
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7:16
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7:18
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7:18
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7:20
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7:20
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7:22
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
6:47
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—
6:46
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—
6:45
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—
6:44
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—
6:42
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—
6:40
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—
6:38
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
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—
—
—
—
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—
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Temp °C
18
16
15
18
17
15
17
16
14
13
15
13
14
16
14
18
15
13
14
14
12
Feels °C
16
14
14
17
16
14
14
12
10
6
6
4
11
13
12
16
11
11
12
12
10
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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