Big River Surf Break

Lat Long: 39.30° N 123.80° W

Issued: 4 pm 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
11.1° C

2.0°C colder than average 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 5 Jul 2026:

  • Best quality surf: Tuesday 7 Jul, 5AM (local time) - 5.5ft (1.7m), 11s period, NW swell with glassy winds.
  • Most powerful swell: Wednesday 8 Jul, 11PM (local time) - 10ft (3.0m), 8s period, NW swell with 930 kJ wave energy.
  • Next surfable swell (1★+): Sunday 5 Jul, 2AM (local time) - 6ft (1.8m), 8s 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 Sunday (Jul 05) at 2AM. The primary swell is predicted to be 1.8m and 8s period with a secondary swell of 0.7m and 14s. 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 3.0m 8s and forecast to arrive on Wednesday (Jul 08) at 11PM. 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+) 2AM (Sun 5th Jul)6ft (1.8m) 8s
Best Surf 5AM (Tue 7th Jul)5.5ft (1.7m) 11s
Most Powerful11PM (Wed 8th Jul)10ft (3.0m) 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 13°C on Sat afternoon, min 10°C on Sun night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 13°C on Wed afternoon, min 9°C on Tue night). Wind will be generally light.

Sat
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
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
2
1
2
3
2
1
3
2
1
3
1
3
3
1
2
3
1
1
3
1
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)
1.7
NW
8
1.8
NW
8
1.6
NW
8
0.8
SSW
18
1.7
NW
8
1.6
NW
8
1.6
NW
8
0.8
SSW
20
1.6
NW
11
0.9
SSW
18
1
SSW
18
0.9
SSW
18
2.5
NW
8
2.5
NW
8
2.3
NW
8
2.5
NW
8
2.5
NW
8
2.2
NW
8
2.5
NW
8
2.2
NW
8
1.9
NW
7
Wave Graph
Metric surfscale
Energy kJ
328
373
349
395
389
335
335
485
558
531
651
491
694
715
643
796
694
589
813
531
341
Wind (km/h)
10
WNW
5
SSW
15
SW
10
W
0
SE
10
WNW
15
NW
5
NNW
15
WNW
20
NW
10
N
15
NW
20
NW
15
NNW
20
NW
20
NW
15
NNW
15
NW
20
NW
10
NNW
15
NW
Wind State
cross-on
glassy
on
cross-on
glassy
cross-on
cross
glassy
cross
cross
cross-off
cross
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
High Tide
3:48PM1.41m
2:28AM1.46m
4:20PM1.48m
3:26AM1.30m
4:54PM1.57m
4:40AM1.15m
5:31PM1.66m
6:13AM1.04m
6:13PM1.77m
7:51AM1.03m
7:00PM1.88m
9:17AM1.09m
7:51PM1.99m
10:25AM1.17m
Low Tide
8:57PM0.81m
9:18AM0.07m
10:02PM0.73m
9:53AM0.22m
11:13PM0.59m
10:31AM0.38m
00:24AM0.40m
11:15AM0.54m
1:31AM0.18m
12:08PM0.69m
2:32AM-0.04m
1:09PM0.79m
3:27AM-0.24m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:54
5:56
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:45
8:45
8:44
8:44
8:44
8:43
8:43
8:43
 mm
Temp °C
13
11
12
12
11
12
12
11
12
12
11
12
13
12
13
13
11
13
14
13
14
Feels °C
11
10
10
10
10
10
9
9
9
8
8
8
9
9
9
9
8
10
10
11
12
Swell 1
Height (m)
Direction
Period (s)
1.7
NW
8
1.8
NW
8
1.6
NW
8
1.6
NW
8
1.7
NW
8
1.6
NW
8
1.6
NW
8
1.6
NW
8
0.8
SSW
20
0.9
SSW
18
1
SSW
18
0.9
SSW
18
1.1
SSW
16
0.9
SSW
16
1.1
SSW
16
0.9
SSW
16
0.9
SSW
16
0.9
SSW
16
0.9
SSW
15
0.8
SSW
15
0.8
SSW
14
Energy kJ
328
373
349
319
389
335
335
267
485
531
651
491
667
452
643
436
377
377
362
272
268
Swell 2
Height (m)
Direction
Period (s)
0.7
SSW
14
0.7
SSW
14
0.7
WNW
13
0.8
SSW
18
0.8
WNW
13
0.8
WNW
12
0.8
SSW
16
0.9
NW
11
0.7
SW
16
0.6
SSW
14
0.7
SSW
15
0.6
SW
15
0.4
S
20
0.4
SSW
13
0.5
S
18
0.1
S
21
0.2
WNW
12
Energy kJ
183
186
140
395
209
180
330
172
255
140
188
174
119
70
160
9
13
Swell 3
Height (m)
Direction
Period (s)
0.5
SSW
20
0.5
WNW
12
0.6
SSW
18
0.5
WNW
13
0.6
SSW
18
0.7
SSW
17
0.8
WNW
12
0.8
SSW
20
0.3
SSW
12
0.2
S
8
0.2
S
21
0.4
NW
10
0.4
S
19
0.1
W
18
0.1
W
18
Energy kJ
216
86
216
101
207
246
174
485
28
5
35
28
117
6
6
Wind waves
Height (m)
Direction
Period (s)
1.8
NW
8
1.6
NW
11
1.8
NW
7
1.8
NW
7
1.8
NW
7
2.5
NW
8
2.5
NW
8
2.3
NW
8
2.5
NW
8
2.5
NW
8
2.2
NW
8
2.5
NW
8
2.2
NW
8
1.9
NW
7
Energy kJ
354
558
267
308
292
694
715
634
796
694
589
813
531
341
Nearest Offshore or Glassy
Rating
(10 max)
2
2
3
2
3
2
1
3
4
2
3
3
2
4
3
2
3
3
4
3
3
Distance (km)
82
0
84
277
0
202
304
0
129
305
0
129
303
29
202
303
0
129
82
0
155
Best forecast wave conditions in Mendocino County
Rating
(10 max)
3
3
4
4
4
4
3
Best forecast wave conditions in United States
Rating
(10 max)
2
3
3
2
3
2
2
4
4
2
4
4
3
4
3
2
4
3
4
4
3
Header Global
Rating
(10 max)
5
9
7
5
6
8
7
5
5
9
8
9
9
5
5
5
5
8
7
6
8
  • 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
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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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