Big River Surf Break

Lat Long: 39.30° N 123.80° W

Big River 48 hour detailed Surf Forecast

Issued: 10 am 21 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
13.6°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 (21 Sep):

  • Morning surf: Morning surf (21 Sep, local time) - 3ft (0.9m), 17s period with SW swell.
  • Afternoon surf: Afternoon surf (21 Sep, local time) - 3ft (0.9m), 17s period with SW swell.
  • Evening surf: Evening surf (21 Sep, local time) - 7.5ft (2.3m), 8s period with NW swell.

The current surf forecast for Big River at 5PM is: 0.9m 17s primary swell from a Southwest direction and 0.3m 13s secondary swell from a South direction, 2.1m 8s secondary swell from a Northwest direction (forecast issued at 10:00am September 21). The wind direction is predicted to be cross-shore.

Time (PDT) & DateWave HeightWave Period
Morning (21 Sep)3ft (0.9m)17s
Afternoon (21 Sep)3ft (0.9m)17s
Evening (21 Sep)7.5ft (2.3m)8s

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


Short Range Forecast

Mostly dry. Very mild (max 16°C on Wed afternoon, min 11°C on Mon night). Winds decreasing (fresh winds from the NNW on Tue afternoon, calm by Wed night).

Monday
21
Tuesday
22
Wednesday
23
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
2
1
1
3
4
4
4
4
2
2
2
3
4
4
3
4
3
2
4
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
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
1.4
NW
13
1.5
NW
12
3.5
NW
8
3.5
NW
8
3
NW
8
2.4
NW
8
2.1
NW
8
2.1
NW
8
2.4
NW
11
2.4
NW
8
2.5
NW
8
2.4
NW
8
2.1
NW
8
Wave Graph
Metric surfscale
Energy kJ
493
482
482
482
650
545
567
595
632
659
678
1265
1387
1075
655
523
565
1302
783
769
672
496
Wind (km/h)
10
NNW
10
WNW
15
NW
20
NW
5
N
10
NNW
10
NNW
10
N
10
N
15
NW
25
NW
30
NNW
20
NNW
15
NNW
15
NNW
10
N
10
N
15
NW
20
NW
15
NNW
5
NNW
5
NNE
Wind State
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
glassy
High Tide
9:32AM1.30m
8:02PM1.57m
9:57AM1.36m
8:53PM1.62m
10:20AM1.44m
9:39PM1.65m
Low Tide
2:12PM0.91m
3:05AM0.15m
2:59PM0.80m
3:40AM0.13m
3:41PM0.67m
cloud
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:01
7:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:14
7:12
7:10
 mm
Temp °C
12
14
14
13
12
12
12
11
11
14
14
14
13
12
11
11
11
15
16
15
13
13
Feels °C
11
13
12
10
11
11
10
9
9
11
10
9
10
9
8
9
9
12
13
12
11
12
  • 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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