Big River surfForecast / CAL – Mendocino County / USA

information circle12 Day Weather and Surf, issued 9 am Thursday 29 Jan 2026 PST
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
12.9° C
(Which is 1.2°C warmer than normal for this time of year)


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 Thursday (Jan 29) at 7PM. The primary swell is predicted to be 3.5m and 14s period with a secondary swell of 0.4m and 16s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Big River in the next 12 days are 4.0m 16s and forecast to arrive on Sunday (Feb 01) at 10PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (PST) & Date Wave Height & Period
Next good surf (1 star+) 7PM (Thu 29th Jan)11ft (3.5m) 14s
Best Surf 7PM (Sun 1st Feb)13ft (4.0m) 16s
Most Powerful10PM (Sun 1st Feb)13ft (4.0m) 16s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 18°C on Fri morning, min 12°C on Thu afternoon). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Tue morning, min 9°C on Sun night). Wind will be generally light.

Thursday
29
Friday
30
Saturday
31
Sunday
01
Monday
02
Tuesday
03
Wednesday
04
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
4
4
4
4
3
4
4
3
4
5
5
6
5
5
4
4
3
4
4
4
4
Swell
Height Map
Wave Height (m) & direction (?)
3.5
WNW
3.5
WNW
3
W
2.3
W
2.2
W
2.5
W
1.3
WNW
1.8
WNW
3
W
1.9
W
3.5
W
4
W
3.5
W
3.5
WNW
3
WNW
2.3
WNW
1.9
WNW
1.2
WNW
2.3
W
2
W
2.5
WSW
Period(s) (?)151413131212181615181616151413121118161314
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5685524130041778141517681081161634302377715372405644418325781485944851270114122180
Wind
(km/h)
5
SE
5
NW
5
E
5
ENE
10
WNW
10
ESE
5
ESE
5
S
10
SE
0
SE
15
NW
5
NE
5
N
10
NNW
10
ENE
0
ESE
5
NNW
5
ENE
5
N
10
NNW
10
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrossglassoffcross-
on
cross-
off
cross-
off
cross-
on
cross-
off
glasscrossoffglasscross-
off
cross-
off
glasscross-
off
offglasscross-
off
cross-
off
High Tide
/ height (m)
9:52PM
1.30
8:05AM
2.09
10:33PM
1.39
9:02AM
2.12
11:11PM
1.47
9:55AM
2.10
11:47PM
1.55
10:45AM
2.03
12:22AM
1.61
11:33AM
1.90
12:56AM
1.66
12:21PM
1.73
1:30AM
1.69
Low Tide
/ height (m)
2:45PM
-0.28
1:48AM
0.94
3:34PM
-0.36
2:53AM
0.87
4:20PM
-0.40
3:50AM
0.78
5:01PM
-0.37
4:43AM
0.69
5:40PM
-0.28
5:35AM
0.61
6:16PM
-0.15
6:27AM
0.54
6:50PM
0.02
Thursday
29
Friday
30
Saturday
31
Sunday
01
Monday
02
Tuesday
03
Wednesday
04
Sunrise7:24--7:24--7:22--7:22--7:20--7:20--7:18--
Sunset-5:30--5:32--5:34--5:35--5:36--5:37--5:37-
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C131313181514161413141411121112151414151516
Feels °C (?)11111215121213121112119989121112131414
  • 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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