Big River Surf Break

Lat Long: 39.30° N 123.80° W

Big River 48 hour detailed Surf Forecast

Issued: 4 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
15.0°C
0.2° 

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 (08 Sep):

  • Morning surf: Morning surf (08 Sep, local time) - 3ft (0.9m), 13s period with S swell.
  • Afternoon surf: Afternoon surf (08 Sep, local time) - 3ft (0.9m), 12s period with S swell.
  • Evening surf: Evening surf (08 Sep, local time) - 3.5ft (1.1m), 12s period with S swell.

The current surf forecast for Big River at 7AM is: 0.9m 13s primary swell from a South direction and 1.3m 7s secondary swell from a Northwest direction (forecast issued at 04:00am September 08). The wind direction is predicted to be offshore and the swell rating is 2.

Time (PDT) & DateWave HeightWave Period
Morning (08 Sep)3ft (0.9m)13s
Afternoon (08 Sep)3ft (0.9m)12s
Evening (08 Sep)3.5ft (1.1m)12s

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


Short Range Forecast

Mostly dry. Warm (max 25°C on Wed morning, min 13°C on Thu night). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
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
1
2
1
2
2
2
2
2
1
1
1
2
2
2
1
3
2
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)
0.9
S
13
0.9
S
13
0.9
S
13
0.9
S
12
0.9
S
12
1.1
S
12
1.1
S
12
0.8
S
11
0.8
S
11
0.9
S
11
0.9
S
11
1
NW
8
0.7
SW
19
0.7
SW
19
0.7
SW
18
0.7
SW
18
0.7
SW
18
0.8
SSW
17
0.9
SW
17
0.9
SSW
17
0.9
SSW
17
1
SW
17
1
SW
16
1
SW
16
Wave Graph
Metric surfscale
Energy kJ
289
276
263
251
243
356
350
166
154
196
192
132
376
364
316
316
312
386
429
504
498
553
534
502
Wind (km/h)
10
NNE
5
NE
5
ENE
10
W
5
NW
5
NW
10
NE
5
ENE
10
NE
10
ENE
5
NE
10
WNW
10
NW
10
NW
10
NNW
0
NW
0
NNE
10
NW
5
NW
10
NW
15
NW
15
NW
5
W
5
N
Wind State
off
off
off
cross-on
glassy
cross
off
off
off
cross-off
glassy
cross
cross
cross
cross-off
glassy
glassy
cross
glassy
cross
cross
cross
glassy
cross-off
High Tide
10:28AM1.47m
9:34PM1.93m
11:02AM1.57m
10:29PM1.91m
11:34AM1.66m
Low Tide
3:43AM-0.16m
3:29PM0.69m
4:26AM-0.14m
4:23PM0.53m
5:05AM-0.07m
5:12PM0.39m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:50
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:35
7:32
7:31
 mm
Temp °C
16
16
17
22
18
19
21
21
20
21
22
25
23
22
18
19
19
18
17
17
17
16
14
14
Feels °C
14
14
15
20
17
17
18
19
17
18
20
22
20
19
16
19
18
16
16
15
15
14
14
14
  • 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 

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