Big River Surf Break

Lat Long: 39.30° N 123.80° W

Issued: 4 pm 27 Jun 2026 (local time)

Forecast update in  hr  min

Today's Big River sea temperature is
12.9° 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 28 Jun 2026:

  • Best quality surf: Sunday 28 Jun, 8AM (local time) - 8ft (2.5m), 8s period, NW swell with cross-offshore winds.
  • Most powerful swell: Tuesday 30 Jun, 5PM (local time) - 15ft (4.5m), 10s period, NW swell with 3,916 kJ wave energy.
  • Next surfable swell (1★+): Sunday 28 Jun, 8AM (local time) - 8ft (2.5m), 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 (Jun 28) at 8AM. The primary swell is predicted to be 2.5m and 8s period with a secondary swell of 0.8m and 16s. Another secondary swell of 0.2m and 18s 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 4.5m 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+) 8AM (Sun 28th Jun)8ft (2.5m) 8s
Best Surf 8AM (Sun 28th Jun)8ft (2.5m) 8s
Most Powerful 5PM (Tue 30th Jun)15ft (4.5m) 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 Sat afternoon, min 10°C on Sat night). Winds decreasing (strong winds from the NW on Sat afternoon, light winds from the N by Mon morning).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 14°C on Tue afternoon, min 10°C on Tue night). Winds increasing (light winds from the NNW on Wed morning, fresh winds from the NW by Thu afternoon).

Sat
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
1
2
1
2
2
3
4
2
3
3
2
2
3
1
1
2
0
1
3
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)
3
NW
7
2.5
NW
8
2.5
NW
8
4
NW
9
3
NW
9
3
NW
10
3.5
NW
9
3
NW
10
3.5
NW
10
4.5
NW
10
3.5
NW
10
3.5
NW
10
4
NW
10
3
NW
9
3
NW
9
3
NW
8
2.2
NW
7
1.7
NW
7
2.4
NW
8
2.3
NW
8
2.1
NW
8
Wave Graph
Metric surfscale
Energy kJ
756
801
1002
2264
1572
1488
1914
1793
2720
3916
2598
2103
3072
1414
1188
1383
493
277
640
582
581
Wind (km/h)
45
NW
30
NNW
25
NW
40
NW
25
NNW
15
NW
25
NW
15
NNW
25
NW
30
NW
15
NNW
15
NW
25
NW
20
NNW
25
NW
30
NW
20
NNW
20
NW
30
NNW
10
N
15
WNW
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross
cross-off
cross-off
cross
cross
cross-off
cross
cross
cross-off
cross
cross-off
cross-off
cross
High Tide
9:55PM1.80m
12:31PM1.20m
10:32PM1.82m
1:04PM1.23m
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
Low Tide
3:41PM0.90m
5:23AM-0.19m
4:22PM0.91m
5:58AM-0.21m
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
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:52
5:52
5:52
5:52
<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
8:45
 mm
Temp °C
14
13
13
14
14
14
14
13
14
14
13
14
14
13
14
14
13
14
14
13
14
Feels °C
7
5
8
7
7
11
9
8
10
9
8
11
10
8
9
9
8
10
9
9
12
Swell 1
Height (m)
Direction
Period (s)
0.9
SSW
17
0.9
SSW
16
0.8
SSW
16
0.8
SSW
16
0.7
SSW
15
0.6
SSW
15
0.7
SSW
15
0.6
SSW
20
0.4
SSW
14
0.6
SSW
18
0.7
SW
18
0.7
SSW
18
0.8
SSW
16
0.7
SW
16
0.6
SSW
16
0.7
SSW
15
0.6
SW
15
0.6
SSW
14
0.8
SSW
16
0.8
SSW
16
1.9
NW
8
Energy kJ
464
397
322
288
193
142
193
253
81
214
319
270
334
264
169
201
174
140
273
288
470
Swell 2
Height (m)
Direction
Period (s)
0.1
S
19
0.2
S
18
0.2
S
18
0.2
S
16
0.2
S
16
0.4
SW
21
0.2
SSW
21
0.5
SSW
15
0.4
SW
19
0.4
SSW
14
0.4
SW
14
0.2
SSW
21
0.2
SSW
21
0.3
SSW
19
0.4
SSW
19
0.3
SSW
18
0.6
SSW
18
0.3
SSW
17
0.3
WNW
15
0.4
WNW
14
0.6
SSW
14
Energy kJ
7
25
25
20
20
117
45
128
96
79
52
44
44
73
125
65
243
55
42
75
131
Swell 3
Height (m)
Direction
Period (s)
0.1
S
10
0.1
W
15
0.1
SW
24
0.2
S
11
0.2
S
11
0.2
S
11
0.1
S
11
0.1
S
13
0.1
W
18
0.1
W
18
0.3
SW
13
0.2
S
12
0.2
WNW
16
0.2
WNW
15
0.2
WNW
15
0.2
S
11
0.2
SSW
21
0.4
WNW
14
Energy kJ
2
4
22
10
10
9
2
3
6
6
27
11
26
22
22
9
44
71
Wind waves
Height (m)
Direction
Period (s)
3
NW
7
2.5
NW
8
2.5
NW
8
4
NW
9
3
NW
9
3
NW
10
3.5
NW
9
3
NW
10
3.5
NW
10
4.5
NW
10
3.5
NW
10
3.5
NW
10
4
NW
10
3
NW
9
3
NW
9
3
NW
8
2.2
NW
7
1.7
NW
7
2.4
NW
8
2.3
NW
8
2.1
NW
8
Energy kJ
756
801
1002
2264
1572
1488
1914
1793
2720
3916
2598
2103
3072
1414
1188
1383
493
277
640
582
581
Nearest Offshore or Glassy
Rating
(10 max)
2
4
3
3
4
3
2
4
4
2
4
3
1
3
4
2
3
2
1
3
2
Distance (km)
1794
59
183
304
59
183
304
0
155
648
59
202
648
59
129
669
59
183
305
0
155
Best forecast wave conditions in Mendocino County
Rating
(10 max)
4
4
4
4
3
3
3
Best forecast wave conditions in United States
Rating
(10 max)
3
4
3
3
4
4
2
4
4
2
4
4
3
4
4
2
3
3
2
3
2
Header Global
Rating
(10 max)
8
5
9
7
5
5
5
5
5
5
5
5
9
9
6
5
5
5
4
5
5
  • 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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