Big River Surf Break

Lat Long: 39.30° N 123.80° W

Issued: 4 pm 20 Jun 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
12.2° C

Normal for this time of year

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


Big River surf forecast from 21 Jun 2026:

  • Best quality surf: Monday 22 Jun, 2AM (local time) - 7.5ft (2.3m), 8s period, NW swell with cross-offshore winds.
  • Most powerful swell: Saturday 27 Jun, 8PM (local time) - 11ft (3.5m), 8s period, NW swell with 1,492 kJ wave energy.
  • Next surfable swell (1★+): Saturday 20 Jun, 11PM (local time) - 4ft (1.2m), 16s period with SSW swell.

Best Forecast Surf Conditions for Big River this week:

The surf forecast for Big River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jun 20) at 11PM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 1.6m and 9s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Big River in the next 16 days are 3.5m 8s and forecast to arrive on Saturday (Jun 27) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sat 20th Jun)4ft (1.2m) 16s
Best Surf 2AM (Mon 22nd Jun)7.5ft (2.3m) 8s
Most Powerful 8PM (Sat 27th Jun)11ft (3.5m) 8s

Table - best surf conditions forecast for Big River over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

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

Days 5-7 Weather Summary

Mostly dry. Very mild (max 14°C on Wed afternoon, min 10°C on Wed night). Wind will be generally light.

Sat
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Thursday
25
Friday
26
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
3
2
1
4
1
2
3
0
2
3
2
2
2
1
1
3
1
1
1
2
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)
1.2
SSW
16
1.1
SSW
16
1.8
NW
9
2.1
NW
9
2.3
NW
8
1.6
NW
8
1.6
NW
8
1.6
NW
8
1.3
NW
8
0.8
SSW
16
0.7
SSW
18
0.9
SSW
18
1.2
SSW
17
1.9
NW
8
1
SSW
16
2.4
NW
8
1
SSW
15
0.7
SSW
19
0.6
SSW
19
1
SSW
17
2.1
NW
10
Wave Graph
Metric surfscale
Energy kJ
666
620
516
631
719
367
335
349
239
306
344
448
813
511
498
664
417
329
246
629
953
Wind (km/h)
20
NW
5
N
10
WNW
15
NW
5
NNW
10
W
10
W
0
SSW
15
SW
5
SW
0
E
10
W
10
WNW
15
NNW
20
NW
25
NW
15
NNW
25
NW
20
NNW
20
NW
25
NW
Wind State
cross
glassy
cross
cross
cross-off
cross-on
cross-on
glassy
on
on
glassy
cross-on
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross
cross
High Tide
5:15PM1.56m
4:33AM1.32m
6:00PM1.62m
5:56AM1.14m
6:43PM1.67m
7:28AM1.04m
7:24PM1.71m
8:57AM1.03m
8:02PM1.74m
10:11AM1.07m
8:40PM1.76m
11:08AM1.12m
9:18PM1.78m
11:53AM1.17m
Low Tide
11:02PM0.62m
10:58AM0.14m
00:22AM0.49m
11:44AM0.34m
1:34AM0.33m
12:32PM0.53m
2:34AM0.17m
1:20PM0.69m
3:24AM0.04m
2:09PM0.80m
4:07AM-0.06m
2:56PM0.87m
4:46AM-0.14m
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:48
5:48
5:48
5:48
5:48
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:44
8:45
8:45
8:45
8:45
8:45
8:45
8:45
 mm
Temp °C
14
11
13
13
12
13
14
12
13
13
12
13
14
13
14
13
12
14
15
14
14
Feels °C
12
9
11
10
11
11
13
11
12
11
12
13
12
11
10
9
8
9
12
12
10
Swell 1
Height (m)
Direction
Period (s)
1.2
NW
10
1.3
NW
7
1.8
NW
9
2.1
NW
9
2
NW
8
1.6
NW
8
1.6
NW
8
1.6
NW
8
1.3
NW
8
1.3
NW
8
1.3
NW
8
1.5
NW
9
1.6
NW
9
1.9
NW
8
1.9
NW
8
1.1
SSW
16
1
SSW
15
0.8
SSW
14
0.8
SSW
14
1
SSW
17
0.8
SSW
18
Energy kJ
275
194
516
631
532
367
335
349
239
239
222
342
362
511
498
561
417
239
239
629
390
Swell 2
Height (m)
Direction
Period (s)
1.2
SSW
16
1.1
SSW
16
0.9
SSW
16
0.9
SSW
14
0.9
SSW
14
0.8
SSW
14
0.7
SSW
14
0.8
SSW
16
0.7
SSW
13
0.8
SSW
16
0.8
SSW
15
0.9
SSW
18
1.2
SSW
17
0.9
SSW
16
1
SSW
16
0.2
SSW
21
0.3
WNW
10
0.7
SSW
19
0.6
SSW
19
1
NW
11
0.5
SSW
14
Energy kJ
666
620
419
362
330
264
161
330
154
306
272
448
813
376
487
44
20
329
246
220
104
Swell 3
Height (m)
Direction
Period (s)
0.5
S
11
1
NNW
9
0.4
SSW
20
0.4
SSW
19
0.7
SSW
18
0.6
SSW
18
0.5
SSW
18
0.7
SSW
13
0.6
SSW
16
0.6
SSW
20
0.7
SSW
18
0.8
SSW
14
0.2
SSE
12
0.5
SSW
13
0.2
SSE
11
0.1
S
11
0.1
S
11
0.3
WNW
10
0.3
WNW
9
0.1
S
11
0.2
S
20
Energy kJ
63
154
149
148
280
209
174
154
173
298
344
268
13
98
12
2
2
19
17
2
30
Wind waves
Height (m)
Direction
Period (s)
2.3
NW
8
2.4
NW
8
2
NW
7
1.3
NW
6
1.1
NW
5
1.1
NW
5
2.1
NW
10
Energy kJ
719
664
357
100
65
60
953
Nearest Offshore or Glassy
Rating
(10 max)
2
3
2
3
4
1
3
3
2
1
3
3
3
3
3
1
3
2
2
4
1
Distance (km)
944
0
202
59
0
202
82
0
36
7
0
85
160
29
129
304
0
202
251
29
304
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
3
4
3
2
3
3
3
3
4
Best forecast wave conditions in United States
Rating
(10 max)
2
4
3
3
4
1
3
3
3
3
3
3
3
3
3
2
3
2
2
4
2
Header Global
Rating
(10 max)
9
7
7
7
5
6
6
5
6
8
8
6
5
5
5
5
5
5
5
7
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Big River Surf forecast

The above surf forecast table for Big River provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Big River can be found by selecting the local surf guide option on the grey menu. Our Big River surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Big River) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Big River may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Big River is 54 km (34 miles) from Ukiah. If you plan a vacation in Mendocino County, look for hotels and other accommodation in Ukiah. Ukiah has rooms for a wide range of budgets as well as car hire and transport links.

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