Big River Surf Break

Lat Long: 39.30° N 123.80° W

Big River 48 hour detailed Surf Forecast

Issued: 4 am 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
13.5°C
1.0° 

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


How big are the waves at Big River today (17 Sep):

  • Morning surf: Morning surf (17 Sep, local time) - 4.5ft (1.4m), 8s period with NW swell.
  • Afternoon surf: Afternoon surf (17 Sep, local time) - 4.5ft (1.3m), 8s period with NW swell.
  • Evening surf: Evening surf (17 Sep, local time) - 4.5ft (1.3m), 8s period with NW swell.

The current surf forecast for Big River at 8AM is: 1.4m 8s primary swell from a Northwest direction and 0.5m 11s secondary swell from a Northwest direction (forecast issued at 04:00am September 17). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (PDT) & DateWave HeightWave Period
Morning (17 Sep)4.5ft (1.4m)8s
Afternoon (17 Sep)4.5ft (1.3m)8s
Evening (17 Sep)4.5ft (1.3m)8s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Thu morning, min 11°C on Sat morning). Wind will be generally light.

Thursday
17
Friday
18
Saturday
19
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
2
2
2
0
1
1
2
2
2
2
2
1
1
1
2
3
2
2
2
1
0
1
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
NW
8
1.5
NW
8
1.4
NW
8
1.5
NW
8
1.3
NW
8
1.3
NW
8
1.3
NW
8
1.2
NW
8
1.2
NW
8
1.1
NW
8
0.6
SW
20
0.6
SW
19
0.6
SW
19
0.6
SW
19
1.5
NW
8
1.8
NW
7
0.6
SW
19
0.6
SW
19
0.6
SW
18
0.6
SW
18
0.8
SW
18
0.8
SW
18
0.8
SW
18
0.8
SW
18
Wave Graph
Metric surfscale
Energy kJ
319
299
277
306
244
244
219
196
196
177
239
303
303
303
303
303
240
231
208
255
375
375
375
400
Wind (km/h)
10
ESE
10
ESE
10
ESE
10
SW
10
SW
5
WSW
5
ENE
5
ENE
5
ENE
5
ENE
5
NNE
15
NW
15
NW
15
NW
10
NW
5
N
10
N
10
N
5
NNE
15
NW
20
NW
15
NW
15
NW
5
N
Wind State
cross-off
cross-off
cross-off
on
on
on
glassy
glassy
off
off
off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
High Tide
5:16AM1.16m
3:35PM1.58m
6:55AM1.15m
4:35PM1.52m
8:15AM1.19m
5:49PM1.50m
Low Tide
9:11AM0.95m
11:17PM0.25m
10:14AM1.03m
00:28AM0.25m
11:47AM1.05m
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:20
7:19
7:16
 mm
Temp °C
15
14
13
17
15
15
15
14
14
14
14
16
15
14
13
13
12
12
11
14
14
13
12
12
Feels °C
14
13
11
15
14
14
15
14
13
13
13
14
13
12
12
13
11
11
10
11
11
11
10
11
  • 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
How to use the Wavefinder 

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.


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