Kugenuma Rivermouth Surf Break

Lat Long: 35.31° N 139.47° E

Kugenuma Rivermouth 48 hour detailed Surf Forecast

Issued: 2 pm 12 Nov 2026 (local time)

Forecast update in  hr  min

Today's Kugenuma Rivermouth sea temperature is
21.7°C
0.2° 

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


How big are the waves at Kugenuma Rivermouth today (12 Nov):

  • Afternoon surf: Afternoon surf (12 Nov, local time) - 1ft (0.3m), 9s period with SSE swell.
  • Evening surf: Evening surf (12 Nov, local time) - 1ft (0.3m), 9s period with SSE swell.

The current surf forecast for Kugenuma Rivermouth at 8PM is: 0.3m 9s primary swell from a South-southeast direction and 0.1m 8s secondary swell from a East direction, 0.5m 4s secondary swell from a Southwest direction (forecast issued at 02:00pm November 12). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (12 Nov)--
Afternoon (12 Nov)1ft (0.3m)9s
Evening (12 Nov)1ft (0.3m)9s

Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 2mm), mostly falling on Sun morning. Very mild (max 18°C on Thu afternoon, min 13°C on Sun morning). Wind will be generally light.

Thu
12
Friday
13
Saturday
14
Sun
15
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SSE
10
0.3
SSE
9
0.3
SSE
9
0.3
SSE
9
0.5
SW
4
0.2
SSE
9
0.7
SW
4
0.6
SW
4
0.4
SW
4
0.1
E
10
0.2
SSW
4
0.2
SSW
4
0.2
S
4
0.3
S
5
0.3
S
5
0.3
S
5
0.3
S
5
0.2
S
5
0.1
SE
11
0.1
SE
11
0.1
SE
9
0.4
S
6
0.6
S
6
Wave Graph
Metric surfscale
Energy kJ
19
17
16
16
8
8
15
10
5
3
3
3
3
5
5
4
4
4
5
5
3
12
29
Wind (km/h)
5
S
20
SW
20
SW
15
WSW
15
WSW
15
WSW
10
W
10
N
5
NE
5
ENE
5
ENE
5
NNW
5
NNW
5
N
5
N
5
N
5
ESE
5
E
5
ENE
5
N
10
N
10
N
5
NNW
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
off
off
glassy
cross-off
glassy
cross-off
cross-off
off
glassy
glassy
glassy
glassy
glassy
off
off
glassy
High Tide
5:09PM1.58m
7:41AM1.36m
5:44PM1.53m
8:30AM1.32m
6:23PM1.45m
Low Tide
11:34AM1.03m
00:28AM0.07m
12:08PM1.06m
1:08AM0.14m
12:50PM1.09m
1:54AM0.24m
clear
clear
clear
clear
cloud
cloud
cloud
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
—
6:13
—
—
—
—
—
—
—
6:15
—
—
—
—
—
—
—
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
4:37
—
—
—
—
—
—
—
4:37
—
—
—
—
—
—
—
4:37
—
—
—
—
4:36
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
15
18
18
17
16
16
15
14
16
18
18
17
17
16
15
15
17
18
18
18
17
17
17
Feels °C
13
14
14
14
13
13
13
12
14
16
16
15
15
14
13
13
15
16
17
16
14
14
15
  • 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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