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Surf Forecasts:

Kugenuma Rivermouth surfForecast / Kanagawa / Japan

information circle48hr Weather and Surf, issued 8 pm Wednesday 18 Mar 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
14.9° C
 (Which is 2.0°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 3AM is: 0.5m 6s primary swell from a Southeast direction and 0.1m 16s secondary swell from a East direction, 0.6m 4s secondary swell from a South-southwest direction (forecast issued at 08:00pm March 18). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (19 Mar)8ft (2.4m)7s
Afternoon (19 Mar)3.5ft (1.1m)8s
Evening (19 Mar)2.5ft (0.8m)8s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Wed
18
Thursday
19
Friday
20
Saturday
21
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
3
2
1
1
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 (?)
0.3
SE
0.3
SE
0.4
SE
0.5
SE
1.5
S
2.4
SSW
1.4
SSW
1.1
S
0.9
SSW
0.8
SSW
0.7
S
0.6
S
0.5
S
0.5
S
0.4
S
0.4
S
0.4
S
0.4
SSW
0.5
SSW
0.3
SW
0.2
SSW
0.1
S
0.1
SE
0.1
SE
Period(s) (?)666667888888777777785181817
Wave
Graph
(?)Metric surfscale
Energy kJ (?)55918167627226149109835841272616151515299261211
Wind
(km/h)
20
SSW
20
WSW
25
SW
20
SW
30
SW
15
NNE
15
NE
15
NNE
25
NE
20
ENE
15
ENE
20
ENE
15
ENE
15
ENE
15
ENE
10
ENE
5
ENE
20
NNE
25
NNE
30
NNE
15
NNE
5
ENE
15
S
25
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		oncross-
on		onoffcross-
off		offoffcross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offoffoffoffglasscross-
on		on
High Tide
/ height (m)
4:55PM
1.36
5:12AM
1.34
5:31PM
1.37
5:29AM
1.38
6:08PM
1.35
5:50AM
1.41
Low Tide
/ height (m)
11:07PM
0.30
11:20AM
0.28
11:30PM
0.38
11:47AM
0.18
11:52PM
0.47
12:19PM
0.12
Wed
18
Thursday
19
Friday
20
Saturday
21
Sunrise----5:48-------5:47-------5:45---
Sunset-------5:52-------5:52-------5:52
cloud
cloud
cloud
light rain
light rain
light rain
part cloud
cloud
part cloud
part cloud
cloud
cloud
light rain
light rain
light rain
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
---113------121---------
Temp. °C15141213151214161413121110991010109657911
Feels °C (?)119710109111298866567862-3-1444
  • 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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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Kugenuma Rivermouth surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

View detailed surf forecast for Kugenuma Rivermouth at:
surf-forecast.com

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