Big River Surf Break

Lat Long: 39.30° N 123.80° W

Issued: 4 am 17 Jun 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
11.7° C

Slightly cooler than normal

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 17 Jun 2026:

  • Best quality surf: Thursday 18 Jun, 2AM (local time) - 6ft (1.9m), 10s period, NW swell with glassy winds.
  • Most powerful swell: Sunday 21 Jun, 5PM (local time) - 8ft (2.4m), 9s period, NW swell with 890 kJ wave energy.
  • Next surfable swell (1★+): Thursday 18 Jun, 2AM (local time) - 6ft (1.9m), 10s period with NW 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 Thursday (Jun 18) at 2AM. The primary swell is predicted to be 1.1m and 17s period with a secondary swell of 1.9m and 10s. 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 2.4m 9s and forecast to arrive on Sunday (Jun 21) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 18th Jun)6ft (1.9m) 10s
Best Surf 2AM (Thu 18th Jun)6ft (1.9m) 10s
Most Powerful 5PM (Sun 21st Jun)8ft (2.4m) 9s

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 13°C on Thu afternoon, min 10°C on Wed night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 13°C on Sat afternoon, min 10°C on Sat night). Wind will be generally light.

Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
4
2
2
3
2
2
3
1
1
3
2
2
3
1
1
3
1
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
18
1.1
SW
18
1.9
NW
10
1.9
NW
10
1.9
NW
10
1.6
NW
10
1.5
NW
10
1
SW
15
1.4
NW
10
1.3
NNW
10
1.2
SSW
16
1
SSW
16
2.1
NW
9
2.4
NW
9
2
NW
8
1.6
NW
8
1.5
NW
8
0.8
SSW
16
1.5
NW
8
1.6
NW
8
1.6
NW
9
Wave Graph
Metric surfscale
Energy kJ
719
790
772
692
692
489
447
424
341
357
666
525
631
890
519
375
299
330
299
346
437
Wind (km/h)
20
SW
10
SW
5
SSE
15
SW
15
SW
5
ENE
10
WNW
10
W
5
E
10
WNW
20
NW
10
NNW
15
NW
15
NW
5
NNW
10
WSW
10
SW
5
SSE
10
W
10
NW
5
NNW
Wind State
on
on
glassy
on
on
off
cross-on
cross-on
glassy
cross-on
cross
cross-off
cross
cross
glassy
on
on
glassy
cross-on
cross
cross-off
High Tide
2:49PM1.40m
1:22AM1.96m
3:39PM1.44m
2:19AM1.76m
4:27PM1.50m
3:21AM1.54m
5:15PM1.56m
4:33AM1.32m
6:00PM1.62m
5:56AM1.14m
6:43PM1.67m
7:28AM1.04m
7:24PM1.71m
Low Tide
7:22PM0.77m
8:37AM-0.43m
8:29PM0.75m
9:25AM-0.27m
9:43PM0.71m
10:12AM-0.07m
11:02PM0.62m
10:58AM0.14m
00:22AM0.49m
11:44AM0.34m
1:34AM0.33m
12:32PM0.53m
2:34AM0.17m
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
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
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:44
8:44
8:44
8:44
8:45
8:45
8:45
 mm
Temp °C
12
12
11
12
13
12
13
13
12
12
13
12
12
13
12
12
13
12
12
13
11
Feels °C
9
9
10
12
10
11
11
12
12
10
10
10
9
10
11
11
11
12
12
12
9
Swell 1
Height (m)
Direction
Period (s)
1.8
NW
9
1.8
NW
9
1.9
NW
10
1.9
NW
10
1.9
NW
10
1.6
NW
10
1.5
NW
10
1.4
NW
10
1.4
NW
10
1.3
NNW
10
1.2
SSW
16
1
SSW
16
2.1
NW
9
2.2
NW
9
2
NW
8
1.6
NW
8
1.5
NW
8
1.3
NW
8
1.5
NW
8
1.6
NW
8
1.6
NW
9
Energy kJ
454
564
678
692
692
441
415
357
341
327
666
525
631
720
519
375
299
239
299
346
437
Swell 2
Height (m)
Direction
Period (s)
1.1
SW
18
1.1
SW
18
1.1
SW
17
1
SW
16
1
SW
16
1
SW
16
1
SW
15
1
SW
15
0.9
SW
14
0.9
SSW
14
0.4
S
11
0.8
NNW
10
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
Energy kJ
719
790
772
515
502
489
447
424
297
357
40
109
419
362
330
264
161
330
154
306
272
Swell 3
Height (m)
Direction
Period (s)
0.8
S
14
0.8
S
14
0.8
S
14
0.7
S
13
0.7
S
13
0.7
S
13
0.6
S
12
0.6
S
12
0.7
SSW
18
0.5
SSW
17
0.2
WNW
11
0.4
SSW
20
0.4
SSW
20
0.4
SSW
19
0.7
SSW
18
0.5
SSW
18
0.5
SSW
18
0.7
SSW
13
0.6
SSW
16
0.6
SSW
20
0.7
SSW
18
Energy kJ
261
264
257
170
165
162
109
103
273
170
11
151
149
148
280
178
174
154
173
298
344
Wind waves
Height (m)
Direction
Period (s)
0.5
S
4
0.4
SSE
4
1.6
NW
10
1.9
NW
8
2.4
NW
9
Energy kJ
7
4
441
447
890
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
3
3
3
3
3
3
2
2
3
2
3
3
3
2
3
2
2
3
Distance (km)
57
36
0
85
57
0
57
57
0
160
306
0
160
59
0
85
82
0
85
274
0
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
4
3
3
4
3
4
3
3
Best forecast wave conditions in United States
Rating
(10 max)
4
4
4
4
4
3
3
3
3
3
3
4
3
3
4
3
3
3
2
2
3
Header Global
Rating
(10 max)
4
5
9
6
6
6
4
7
5
9
4
9
9
8
6
6
5
5
5
5
9
  • 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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