Big River Surf Break

Lat Long: 39.30° N 123.80° W

Issued: 4 pm 29 Jun 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
12.7° 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 30 Jun 2026:

  • Best quality surf: Wednesday 1 Jul, 8AM (local time) - 11ft (3.5m), 10s period, NW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 30 Jun, 5PM (local time) - 13ft (4.0m), 10s period, NW swell with 3,054 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 30 Jun, 2AM (local time) - 10ft (3.0m), 9s 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 Tuesday (Jun 30) at 2AM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 0.6m and 20s. Another secondary swell of 0.5m and 15s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Big River in the next 16 days are 4.0m 10s and forecast to arrive on Tuesday (Jun 30) at 5PM. 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 (Tue 30th Jun)10ft (3.0m) 9s
Best Surf 8AM (Wed 1st Jul)11ft (3.5m) 10s
Most Powerful 5PM (Tue 30th Jun)13ft (4.0m) 10s

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 Mon afternoon, min 10°C on Mon night). Winds decreasing (fresh winds from the NNW on Tue night, calm by Thu morning).

Days 5-7 Weather Summary

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

Mon
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
3
4
2
2
3
3
2
4
1
1
3
1
1
3
1
2
3
2
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)
3.5
NW
9
3
NW
9
3.5
NW
10
4
NW
10
3.5
NW
10
3
NW
10
3.5
NW
10
3
NW
9
2.3
NW
9
2.5
NW
9
2.4
NW
8
1.8
NW
8
2
NW
7
2
NW
7
1.9
NW
8
2.1
NW
8
2.1
NW
8
2.1
NW
9
2.1
NW
8
2.3
NW
9
1.9
NW
9
Wave Graph
Metric surfscale
Energy kJ
1874
1535
2088
3054
1967
1838
2369
1312
846
1023
728
373
421
421
435
542
542
625
596
790
554
Wind (km/h)
20
NW
15
N
25
NW
30
NNW
15
NNW
15
NW
20
NW
15
NNW
15
WNW
15
NW
10
NNW
15
NW
15
NW
10
NNW
10
NW
15
NW
10
NNW
15
NW
20
NW
10
NNW
15
NW
Wind State
cross-off
cross-off
cross
cross-off
cross-off
cross
cross
cross-off
cross-on
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
High Tide
11:09PM1.82m
1:37PM1.25m
11:45PM1.81m
2:11PM1.28m
00:22AM1.77m
2:44PM1.31m
1:00AM1.70m
3:16PM1.36m
1:41AM1.59m
3:48PM1.41m
2:28AM1.46m
4:20PM1.48m
3:26AM1.30m
Low Tide
5:02PM0.91m
6:32AM-0.22m
5:42PM0.90m
7:06AM-0.21m
6:24PM0.89m
7:39AM-0.19m
7:09PM0.88m
8:13AM-0.13m
7:59PM0.86m
8:45AM-0.05m
8:57PM0.81m
9:18AM0.07m
10:02PM0.73m
9:53AM0.22m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:52
5:52
5:52
5:52
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:45
8:45
8:45
8:45
8:45
8:45
8:45
8:44
 mm
Temp °C
14
13
13
14
13
13
14
13
13
13
13
13
13
13
13
14
12
13
13
12
13
Feels °C
10
10
8
9
7
10
11
9
11
10
12
10
10
12
11
12
11
10
9
9
10
Swell 1
Height (m)
Direction
Period (s)
0.7
SSW
15
0.6
SSW
20
0.4
SSW
14
0.6
SSW
18
0.7
SW
18
0.7
SSW
18
0.7
SSW
16
0.6
SW
16
2.3
NW
9
0.7
SSW
15
0.7
SSW
15
0.6
SSW
15
0.7
SSW
15
0.8
SSW
16
1.9
NW
8
2.1
NW
8
2.1
NW
8
2.1
NW
9
0.7
SSW
18
0.8
WNW
12
1.9
NW
9
Energy kJ
193
253
82
214
319
270
232
208
846
201
191
142
209
288
435
542
542
625
273
184
554
Swell 2
Height (m)
Direction
Period (s)
0.2
SSW
21
0.5
SSW
15
0.4
SW
20
0.4
SSW
14
0.4
SW
14
0.2
SSW
21
0.3
SW
13
0.3
SSW
19
0.6
SSW
16
0.3
SSW
18
0.6
SSW
18
0.3
SSW
17
0.3
WNW
15
0.4
NW
14
0.6
SSW
14
0.7
SSW
14
0.8
SSW
14
0.7
WNW
12
0.6
WNW
11
0.6
SSW
18
0.9
WNW
12
Energy kJ
45
128
97
79
52
44
28
73
169
65
246
56
42
48
131
183
239
136
82
207
243
Swell 3
Height (m)
Direction
Period (s)
0.1
S
11
0.1
S
10
0.1
W
18
0.2
SSW
21
0.3
SW
13
0.4
SSW
19
0.2
WNW
16
0.2
WNW
15
0.2
WNW
15
0.2
S
11
0.3
SSW
21
0.4
WNW
14
0.5
SSW
20
0.5
WNW
12
0.6
SSW
18
0.5
WNW
13
0.4
SSW
13
0.7
SSW
17
Energy kJ
2
2
6
44
27
125
26
22
22
9
89
71
216
86
216
101
69
246
Wind waves
Height (m)
Direction
Period (s)
3.5
NW
9
3
NW
9
3.5
NW
10
4
NW
10
3.5
NW
10
3
NW
10
3.5
NW
10
3
NW
9
2.5
NW
9
2.4
NW
8
1.8
NW
8
2
NW
7
2
NW
7
2.1
NW
8
2.3
NW
9
Energy kJ
1874
1535
2088
3054
1967
1838
2369
1312
1023
728
373
421
421
596
790
Nearest Offshore or Glassy
Rating
(10 max)
2
4
4
2
4
4
1
4
2
3
3
1
1
3
2
3
3
1
2
3
2
Distance (km)
304
0
155
648
59
155
648
0
617
82
0
202
648
0
944
29
0
273
304
0
304
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
4
4
4
4
3
3
4
Best forecast wave conditions in United States
Rating
(10 max)
2
4
4
2
4
4
1
4
2
3
4
2
2
4
3
3
4
2
2
4
2
Header Global
Rating
(10 max)
5
5
5
5
4
4
5
6
9
6
5
7
5
7
5
5
5
9
8
9
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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