Big River Surf Break

Lat Long: 39.30° N 123.80° W

Big River 48 hour detailed Surf Forecast

Issued: 10 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
13.8° C
0.7° 

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 (19 Aug):

  • Morning surf: Morning surf (19 Aug, local time) - 6ft (1.9m), 7s period with NW swell.
  • Afternoon surf: Afternoon surf (19 Aug, local time) - 6ft (1.9m), 8s period with NW swell.
  • Evening surf: Evening surf (19 Aug, local time) - 6.5ft (2.0m), 7s period with NW swell.

The current surf forecast for Big River at 4AM is: 1.8m 7s primary swell from a Northwest direction and 0.8m 16s secondary swell from a South-southwest direction, 0.7m 13s secondary swell from a West-northwest direction (forecast issued at 10:00pm August 18). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (PDT) & DateWave HeightWave Period
Morning (19 Aug)6ft (1.9m)7s
Afternoon (19 Aug)6ft (1.9m)8s
Evening (19 Aug)6.5ft (2.0m)7s

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


Short Range Forecast

Mostly dry. Very mild (max 14°C on Wed morning, min 11°C on Tue night). Wind will be generally light.

Tue
18
Wednesday
19
Thursday
20
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
3
3
2
3
2
1
1
2
3
2
2
3
2
0
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SSW
16
0.9
SSW
16
0.8
SSW
16
0.8
SSW
16
1.9
NW
7
1.9
NW
8
1.8
NW
8
2
NW
8
2
NW
7
0.9
SSW
15
0.9
SSW
15
0.8
SSW
15
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
Wave Graph
Metric surfscale
Energy kJ
402
402
291
316
381
403
375
435
423
386
314
246
242
237
220
226
233
236
Wind (km/h)
5
WNW
5
NNW
10
NNW
15
NW
5
NNW
15
WNW
20
NW
15
NW
10
NW
5
N
5
NW
5
NNW
5
NNW
15
NW
15
NW
15
WNW
10
NW
5
WNW
Wind State
cross
glassy
cross-off
cross
cross-off
cross
cross
cross
cross
cross-off
cross
glassy
cross-off
cross
cross
cross
cross
glassy
High Tide
5:26AM1.11m
4:39PM1.64m
7:13AM1.08m
5:33PM1.61m
Low Tide
10:58PM0.32m
9:55AM0.80m
00:09AM0.29m
10:47AM0.93m
part cloud
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
part cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:06
8:05
8:04
 mm
Temp °C
12
13
12
11
12
14
14
14
13
13
12
12
12
14
14
14
12
12
Feels °C
11
13
11
9
11
12
11
12
12
13
11
12
11
12
12
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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