Kugenuma Rivermouth Surf Break
Lat Long: 35.31° N 139.47° E

Kugenuma Rivermouth 48 hour detailed Surf Forecast

Weather Forecast for Kugenuma Rivermouth

Issued: 8 am 04 Jun 2026 (local time)

Forecast update in  hr  min

Today's Kugenuma Rivermouth sea temperature is
21.5° C

Slightly cooler than normal

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 (04 Jun):

  • Morning surf: Morning surf (04 Jun, local time) - 3.5ft (1.0m), 10s period with S swell.
  • Afternoon surf: Afternoon surf (04 Jun, local time) - 2.5ft (0.7m), 9s period with S swell.
  • Evening surf: Evening surf (04 Jun, local time) - 1.5ft (0.5m), 8s period with S swell.

The current surf forecast for Kugenuma Rivermouth at 5PM is: 0.7m 8s primary swell from a South direction and 0.2m 8s secondary swell from a East-southeast direction (forecast issued at 08:00am June 04). The wind direction is predicted to be offshore.

Time (JST) & DateWave HeightWave Period
Morning (04 Jun)3.5ft (1.0m)10s
Afternoon (04 Jun)2.5ft (0.7m)9s
Evening (04 Jun)1.5ft (0.5m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 20°C on Fri afternoon, min 16°C on Fri night). Winds decreasing (fresh winds from the ENE on Fri afternoon, light winds from the ENE by Sat afternoon).

Thursday
4
Friday
5
Saturday
6
Sun
7
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
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
Rating
(10 max)
2
2
1
1
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)
1.1
S
10
1
S
10
0.6
SSW
9
0.7
S
9
0.6
S
8
0.5
S
8
0.4
SSW
8
0.4
SSW
8
0.3
SSW
8
0.3
SSW
7
0.3
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
Wave Graph
Metric surfscale
Energy kJ
250
186
59
76
51
34
22
20
11
11
10
5
5
5
5
5
5
5
5
5
5
5
5
5
Wind (km/h)
15
NNE
15
NNE
20
NNE
15
N
25
N
25
N
25
N
25
NNE
30
NNE
25
NE
25
NE
25
ENE
30
ENE
30
NE
25
NNE
25
NE
25
NE
20
NE
15
ENE
10
E
5
ENE
15
E
10
ENE
10
NE
Wind State
off
off
off
off
cross-off
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
High Tide
5:51AM1.41m
8:30PM1.29m
6:40AM1.32m
9:14PM1.28m
7:38AM1.21m
10:02PM1.27m
Low Tide
1:12PM0.07m
1:21AM0.97m
1:56PM0.19m
2:35AM0.94m
2:45PM0.34m
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
cloud
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:52
6:53
6:53
 mm
Temp °C
20
19
19
19
19
19
19
19
18
18
19
20
18
17
17
16
16
17
19
20
20
19
18
18
Feels °C
19
17
16
16
15
14
14
14
13
13
14
16
13
12
12
12
12
14
17
19
20
18
17
18
Swell 1
Height (m)
Direction
Period (s)
1.1
S
10
1
S
10
0.6
S
8
0.7
S
9
0.6
S
8
0.5
S
8
0.4
SSW
8
0.4
SSW
8
0.3
SSW
8
0.3
SSW
7
0.3
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.1
S
7
0.1
S
7
0.1
S
7
0.1
S
8
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
0.2
SSW
7
Energy kJ
250
186
45
76
51
34
22
20
11
11
10
5
5
5
5
1
1
1
1
5
5
5
5
5
Swell 2
Height (m)
Direction
Period (s)
0.7
SSE
8
0.6
ESE
9
0.6
SSW
9
0.2
ESE
8
0.2
ESE
8
0.1
SE
8
0.1
SE
8
0.1
SE
7
0.1
SE
7
0.1
SE
7
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
6
0.1
SE
11
0.1
SE
5
0.1
SE
4
Energy kJ
63
49
59
6
6
2
2
2
2
2
5
5
5
5
5
5
5
5
5
1
4
1
1
Swell 3
Height (m)
Direction
Period (s)
0.6
ESE
9
0.1
SE
13
0.4
SSE
7
0.1
SE
12
0.1
SE
12
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
12
0.1
SE
12
0.1
SE
7
0.1
E
7
0.1
SE
7
0.1
E
7
0.1
SE
11
0.1
SE
11
0.1
SE
10
0.1
SE
10
Energy kJ
54
7
18
6
6
5
5
5
5
5
2
1
2
1
5
4
4
4
Wind waves
Height (m)
Direction
Period (s)
0.2
NNE
2
0.2
NNE
2
0.2
NNE
2
0.4
NE
3
0.5
NE
3
0.6
NNE
3
0.6
NE
3
0.6
NE
3
0.6
ENE
3
0.6
ENE
3
0.5
NE
3
0.4
NE
3
0.4
NE
3
0.3
NE
3
0.1
SE
6
Energy kJ
1
1
1
2
5
7
7
9
8
8
5
3
3
1
1
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
1
1
1
1
1
4
4
Distance (km)
0
0
0
0
2
61
130
130
140
566
788
748
484
484
484
482
480
45
45
24
45
45
63
63
Best forecast wave conditions in Kanagawa
Rating
(10 max)
2
2
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
3
1
2
2
1
1
1
1
1
1
2
3
3
3
2
2
1
1
2
2
4
4
4
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
5
5
5
5
5
6
9
9
9
8
8
8
9
9
9
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)
Map placeholder
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