Big River surfForecast / CAL – Mendocino County / USA

information circle48hr Weather and Surf, issued 4 am Tuesday 16 Sep 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
15.3° C
(Which is slightly warmer than usual)


How big are the waves at Big River today?

The current surf forecast for Big River at 9AM is: 0.7m 19s primary swell from a South-southwest direction and 0.9m 9s secondary swell from a West-northwest direction, 0.7m 7s secondary swell from a Northwest direction (forecast issued at 04:00am September 16). The wind direction is predicted to be glassy and the swell rating is 2.

Time (PDT) & DateWave HeightWave Period
Morning (16 Sep)2.5ft (0.7m)19s
Afternoon (16 Sep)2.5ft (0.7m)18s
Evening (16 Sep)2.5ft (0.7m)18s

Table - waves today at Big River. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent
Tuesday
16
Wednesday
17
Thursday
18
2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM
Rating
(10 max)
2
2
2
1
1
1
2
2
3
2
2
2
1
2
3
3
3
4
4
3
3
3
4
3
Swell
Height Map
Wave Height (m) & direction (?)
0.5
S
0.6
SSW
0.7
SSW
0.7
SSW
0.8
SSW
0.7
SSW
0.7
S
0.7
S
1.2
WNW
0.7
S
0.7
S
1.3
WNW
1.5
NW
0.7
S
2.1
NW
2.1
NW
2.4
NW
3
NW
3
NW
3
NW
3
NW
3
NW
3
NW
3
NW
Period(s) (?)201919181818181811171610101677810101010101010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1962923713374223293042983052732673204152544924926641541186420261975197919791803
Wind
(km/h)
5
NE
5
E
5
ESE
10
WSW
5
WNW
5
NW
10
NNW
10
N
5
N
5
N
5
NNE
15
NW
15
NW
15
NW
5
NNW
10
NNW
15
NNW
10
N
10
N
10
NW
15
NW
10
NW
0
SSW
5
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglassglasscross-
on
cross-
on
crosscross-
off
cross-
off
cross-
off
cross-
off
glasscrosscrosscrosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscrosscrossglasscross-
on
High Tide
/ height (m)
9:00AM
1.33
7:24PM
1.76
9:44AM
1.41
8:31PM
1.77
10:20AM
1.48
9:29PM
1.78
Low Tide
/ height (m)
1:47AM
-0.05
1:22PM
0.94
2:45AM
-0.06
2:33PM
0.83
3:34AM
-0.05
3:29PM
0.69
Tuesday
16
Wednesday
17
Thursday
18
Sunrise--6:56-------6:56-------6:58-----
Sunset-----7:22-------7:20-------7:19--
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C181818191717161515151618181716151313141616161515
Feels °C (?)181818181717151414141516161516141111131414151615
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for CAL - Mendocino County

  1. weather stationWind Update Continuing clean conditions at Big River (calm at Mendocino 3 km from Big River). 1.1m 9s swell from the NW with a 0.6m 16s long period groundswell from the S and a 0.4m 15s groundswell from the SSW. 3 swells combining to make bigger set waves.

    Big River
Expand
<
>
View all

Actual: 22 min ago

2 km/h
NNE
Clean
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Big River surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest
Nearest
Nearest