Big River Surf Break

Lat Long: 39.30° N 123.80° W

Big River 48 hour detailed Surf Forecast

Issued: 4 am 20 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
14.0°C
0.5° 

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 (20 Sep):

  • Morning surf: Morning surf (20 Sep, local time) - 2.5ft (0.8m), 18s period with SW swell.
  • Afternoon surf: Afternoon surf (20 Sep, local time) - 2.5ft (0.8m), 18s period with SW swell.
  • Evening surf: Evening surf (20 Sep, local time) - 3ft (0.9m), 18s period with SW swell.

The current surf forecast for Big River at 12PM is: 0.8m 18s primary swell from a Southwest direction and 0.4m 13s secondary swell from a South direction, 1.6m 7s secondary swell from a Northwest direction (forecast issued at 04:00am September 20). The wind direction is predicted to be cross-shore.

Time (PDT) & DateWave HeightWave Period
Morning (20 Sep)2.5ft (0.8m)18s
Afternoon (20 Sep)2.5ft (0.8m)18s
Evening (20 Sep)3ft (0.9m)18s

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


Short Range Forecast

Mostly dry. Very mild (max 15°C on Mon morning, min 11°C on Tue night). Wind will be generally light.

Sunday
20
Monday
21
Tuesday
22
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)
3
3
3
2
2
2
2
3
3
3
3
2
1
1
3
4
4
4
4
3
2
2
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)
0.8
SW
18
0.8
SW
18
0.8
SW
18
0.8
SW
18
0.8
SW
18
0.8
SW
19
0.9
SW
18
0.9
SW
18
0.8
SW
18
0.9
SW
17
0.9
SW
17
0.9
SW
17
0.9
SW
17
2.1
NW
8
2.3
NW
8
2.2
NW
8
1
SW
17
1.3
NW
14
1.4
NW
13
1.6
NW
13
3
NW
12
3.5
NW
8
3.5
NW
9
3.5
NW
8
Wave Graph
Metric surfscale
Energy kJ
375
375
379
379
379
414
497
449
366
439
493
482
482
482
634
559
567
595
632
816
2659
1429
1961
1464
Wind (km/h)
10
N
5
NNW
10
NNW
10
NW
15
NW
15
NW
10
NW
5
NNW
5
N
10
NNW
10
N
10
WNW
15
NW
15
NW
5
N
10
N
15
N
10
N
10
N
15
NNW
25
NW
25
NNW
20
NNW
20
NNW
Wind State
cross-off
cross-off
cross-off
cross
cross
cross
cross
glassy
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
9:02AM1.24m
7:01PM1.52m
9:32AM1.30m
8:02PM1.57m
9:57AM1.36m
8:53PM1.62m
Low Tide
1:33AM0.23m
1:11PM1.01m
2:24AM0.19m
2:12PM0.91m
3:05AM0.15m
2:59PM0.80m
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:00
7:01
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:14
7:12
 mm
Temp °C
12
12
12
14
14
14
12
12
12
12
12
15
14
14
13
12
12
12
12
15
15
15
13
13
Feels °C
11
11
11
12
12
12
11
12
11
11
11
14
11
11
12
11
10
11
11
13
11
11
9
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
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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