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Surf Forecasts:

Kugenuma Rivermouth surfForecast / Kanagawa / Japan

information circle48hr Weather and Surf, issued 8 pm Friday 09 Jan 2026 JST
Forecast update in hr  min  s Forecast update imminent
Kugenuma Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kugenuma Rivermouth sea temperature is
16.1° C
 (Which is 1.5°C colder than average for this time of year)

How big are the waves at Kugenuma Rivermouth today?

The current surf forecast for Kugenuma Rivermouth at 12AM is: 0.5m 4s primary swell from a South-southwest direction and 0.1m 11s secondary swell from a East direction (forecast issued at 08:00pm January 09). An open ocean swell of 0.1m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (10 Jan)2.5ft (0.8m)4s
Afternoon (10 Jan)5ft (1.6m)6s
Evening (10 Jan)5.5ft (1.7m)6s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Fri
09
Saturday
10
Sunday
11
Monday
12
6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM
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
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.1
E
0.5
S
0.5
SSW
0.5
SW
0.3
SSW
0.8
SW
1.4
SW
1.6
SW
1.7
SW
1.7
SSW
2.1
SSW
2.5
SSW
2.4
SSW
2.1
SW
2.1
SW
2.3
SW
0.5
SW
0.5
SW
1.5
SW
1.2
SW
0.5
SW
0.4
SW
0.4
SW
0.3
SW
Period(s) (?)1134444566678877711116610101010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)2586324103154202246425685679403371543615717511353262515
Wind
(km/h)
20
S
20
SSW
15
SW
10
NW
10
WSW
25
SW
45
SW
40
SW
40
SW
40
SW
40
SW
45
SW
50
SW
50
WSW
55
WSW
55
W
50
W
35
W
35
WSW
15
SW
10
SSW
5
W
10
SSW
15
S
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcross-
on		cross-
off		cross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		onglassoncross-
on
High Tide
/ height (m)
8:26PM
1.15
9:14AM
1.35
9:39PM
1.03
9:51AM
1.32
11:28PM
0.95
10:33AM
1.30
Low Tide
/ height (m)
2:29AM
0.50
3:59PM
0.59
3:03AM
0.67
5:20PM
0.51
3:37AM
0.84
Fri
09
Saturday
10
Sunday
11
Monday
12
Sunrise-----6:50-------6:50-------6:50--
Sunset-------4:46-------4:47-------4:49
cloud
cloud
clear
clear
cloud
clear
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C9109768111313131413121010743344456
Feels °C (?)3543210344531-3-4-7-8-8-7-2-1001
  • 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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View detailed surf forecast for Kugenuma Rivermouth at:
surf-forecast.com

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