Kugenuma Rivermouth Surf Break

Lat Long: 35.31° N 139.47° E

Kugenuma Rivermouth 48 hour detailed Surf Forecast

Issued: 8 am 07 Oct 2026 (local time)

Forecast update in  hr  min

Today's Kugenuma Rivermouth sea temperature is
24.9°C
0.8° 

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 (07 Oct):

  • Morning surf: Morning surf (07 Oct, local time) - 5ft (1.6m), 15s period with SE swell.
  • Afternoon surf: Afternoon surf (07 Oct, local time) - 2.5ft (0.7m), 14s period with ESE swell.
  • Evening surf: Evening surf (07 Oct, local time) - 1.5ft (0.4m), 12s period with ESE swell.

The current surf forecast for Kugenuma Rivermouth at 1PM is: 1.0m 14s primary swell from a Southeast direction (forecast issued at 08:00am October 07). The wind direction is predicted to be glassy and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (07 Oct)5ft (1.6m)15s
Afternoon (07 Oct)2.5ft (0.7m)14s
Evening (07 Oct)1.5ft (0.4m)12s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Fri afternoon, min 18°C on Fri night). Wind will be generally light.

Wednesday
7
Thursday
8
Friday
9
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
Rating
(10 max)
4
4
3
2
0
0
0
1
0
0
1
0
0
0
0
0
1
0
0
0
0
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)
2
SE
16
1.6
SE
15
1.2
SE
14
0.7
ESE
14
0.7
SE
13
0.4
ESE
12
0.4
ESE
12
0.5
SE
12
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.4
SE
10
0.3
SE
10
0.2
ESE
17
0.2
ESE
17
0.2
ESE
16
0.4
SE
9
0.4
SE
9
0.2
ESE
17
0.2
ESE
16
0.3
ESE
16
0.3
ESE
16
Wave Graph
Metric surfscale
Energy kJ
1929
1048
557
175
163
60
58
65
31
29
37
35
15
29
27
26
25
30
29
26
50
48
Wind (km/h)
15
NNE
15
NNE
5
NNE
5
E
15
SE
15
ENE
15
ENE
20
NNE
20
NNE
15
NE
10
NE
10
SE
10
SE
10
ESE
5
E
5
NE
10
NNE
10
NE
10
ENE
10
ENE
15
ESE
15
ENE
Wind State
off
off
off
glassy
cross
cross-off
cross-off
off
off
off
cross-off
cross
cross
cross
cross-off
off
off
off
cross-off
cross-off
cross
cross-off
High Tide
3:32PM1.41m
3:01AM1.33m
3:47PM1.43m
3:47AM1.41m
4:02PM1.46m
Low Tide
8:43AM0.51m
9:28PM0.79m
9:24AM0.52m
9:52PM0.64m
9:57AM0.56m
part cloud
part cloud
part cloud
part cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
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5:41
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5:41
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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5:19
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—
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5:16
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5:15
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 mm
—
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Temp °C
21
21
22
22
22
21
21
20
19
19
21
22
22
20
20
19
19
19
21
23
22
20
Feels °C
19
18
21
21
20
18
18
17
16
16
19
20
21
19
20
18
18
18
19
22
20
18
  • 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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