Big River Surf Break

Lat Long: 39.30° N 123.80° W

Big River Surf Forecast and Surf Report

Issued: 4 am 31 Oct 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
15.9°C
2.5° 

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 31 Oct 2026:

  • Best quality surf: Friday 6 Nov, 7PM (local time) - 16ft (5.0m), 18s period, NW swell with cross-offshore winds.
  • Most powerful swell: Friday 6 Nov, 10PM (local time) - 16ft (5.0m), 17s period, NW swell with 13,861 kJ wave energy.
  • Next surfable swell (1★+): Saturday 31 Oct, 11AM (local time) - 3.5ft (1.1m), 14s 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 Saturday (Oct 31) at 11AM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.8m 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 5.0m 17s and forecast to arrive on Friday (Nov 06) at 10PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Wednesday (Nov 04) at 10PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sat 31st Oct)3.5ft (1.1m) 14s
Best Surf 7PM (Fri 6th Nov)16ft (5.0m) 18s
Most Powerful10PM (Fri 6th Nov)16ft (5.0m) 17s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Sat night. Very mild (max 14°C on Mon morning, min 10°C on Sat morning). Wind will be generally light.

Days 4-6 Weather Summary

Moderate rain (total 10mm), heaviest on Tue morning. Very mild (max 15°C on Tue afternoon, min 10°C on Tue morning). Wind will be generally light.

Saturday
31
Sunday
1
Monday
2
Tuesday
3
Wednesday
4
Thursday
5
Friday
6
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
3
3
3
2
4
4
3
2
2
3
4
4
3
3
3
3
5
4
8
9
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SSW
14
1.1
SSW
14
1.2
SSW
15
1.3
SSW
16
1.2
SSW
16
1.5
WNW
20
2.3
WNW
18
2.4
WNW
17
2.4
WNW
16
2.2
WNW
16
2.1
WNW
15
3
W
14
2.5
WNW
13
2.2
WNW
12
1.9
WNW
11
2.2
WNW
14
2.5
WNW
14
3
WNW
14
3
WNW
17
4.5
NW
18
4.5
NW
17
Wave Graph
Metric surfscale
Energy kJ
515
508
610
859
724
1642
3418
3473
2928
2330
1846
3376
2157
1430
878
1787
2427
2922
5921
11535
11473
Wind (km/h)
0
NNE
10
NNW
15
NNW
10
NNW
20
NW
5
E
5
SSW
10
SW
15
SE
15
SE
10
SSE
10
ESE
10
N
15
NW
5
NNE
10
NW
20
NNW
10
N
5
NW
15
NNW
5
NE
Wind State
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
on
cross
cross
cross
cross-off
cross-off
cross-off
glassy
cross
cross-off
cross-off
cross
cross-off
glassy
High Tide
3:12PM1.80m
6:11AM1.41m
4:28PM1.66m
7:06AM1.49m
5:53PM1.55m
7:52AM1.59m
7:16PM1.47m
8:31AM1.69m
8:31PM1.43m
9:05AM1.79m
9:37PM1.40m
9:37AM1.86m
10:37PM1.39m
Low Tide
9:15AM1.00m
10:47PM-0.13m
10:45AM0.98m
11:51PM-0.03m
12:17PM0.86m
00:50AM0.07m
1:35PM0.68m
1:43AM0.19m
2:39PM0.47m
2:29AM0.31m
3:31PM0.27m
3:11AM0.44m
4:17PM0.10m
3:49AM0.57m
cloud
cloud
rain showers
clear
clear
clear
part cloud
cloud
cloud
rain showers
rain showers
part cloud
part cloud
clear
cloud
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:41
—
—
6:41
—
—
7:43
—
—
7:43
—
—
7:46
—
—
7:47
—
—
7:48
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—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
6:15
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—
5:14
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—
6:13
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—
6:12
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—
6:09
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—
6:08
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—
6:07
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 mm
—
—
4
—
—
—
—
—
—
9
1
—
—
—
—
—
—
—
—
—
—
Temp °C
12
13
11
12
13
12
14
14
13
13
15
14
14
14
13
15
15
13
15
15
14
Feels °C
11
10
8
9
9
10
12
11
12
10
13
12
11
10
12
13
12
12
13
12
13
  • 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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