Kugenuma Rivermouth Surf Forecast

/ Kanagawa (21 surf breaks) /

Japan (129 surf breaks) / Lat Long: (35.31° N 139.47° E)

Surf Forecasts:

Kugenuma Rivermouth surfForecast / Kanagawa / Japan

48hr Weather and Surf, issued 8 am Friday 19 Sep 2025 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 27.0° C
(Which is 1.4°C warmer than normal for this time of year)

How big are the waves at Kugenuma Rivermouth today?

The current surf forecast for Kugenuma Rivermouth at 10AM is: 0.3m 7s primary swell from a East-southeast direction and 0.2m 6s secondary swell from a South-southwest direction, 0.1m 9s secondary swell from a Southeast direction (forecast issued at 08:00am September 19). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (19 Sep)	1ft (0.3m)	7s
Afternoon (19 Sep)	0.5ft (0.1m)	12s
Evening (19 Sep)	0.5ft (0.1m)	9s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Friday 19						Saturday 20								Sunday 21								Mon 22
	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSW	ESE	SSW	SE	SE	SE	SE	SE	SE	SSE	SE	SSE	SE	SE	SSW	SSW	SW	SSW	SSW	SSW	S	SSW	SSW	SSW
Period(s) (?)	6	7	6	12	9	9	9	13	9	5	5	5	10	10	3	4	5	5	6	6	6	6	6	5
Wave Graph (?)
kJ (?)	6	10	3	5	3	3	3	6	3	3	5	4	4	4	5	14	43	44	68	18	17	11	6	6
Wind (km/h)	NE	NE	NE	NE	NE	NE	NNE	NNE	NE	ENE	SSW	SSW	SW	SSW	SW	SW	WSW	WNW	ENE	E	ENE	ENE	ENE	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	off	cross- off	off	off	off	off	off	off	cross- off	on	on	cross- on	on	on	cross- on	cross- on	cross	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)					4:25PM 1.44				3:27AM 1.40				4:37PM 1.46				4:09AM 1.47				4:50PM 1.48
Low Tide / height (m)			9:30AM 0.38				10:04PM 0.86				10:05AM 0.39				10:26PM 0.72				10:34AM 0.43				10:48PM 0.59

	Friday 19						Saturday 20								Sunday 21								Mon 22
Sunrise	5:26	-	-	-	-	-	-	-	5:26	-	-	-	-	-	-	-	5:28	-	-	-	-	-	-	-
Sunset	-	-	-	5:44	-	-	-	-	-	-	-	5:43	-	-	-	-	-	-	-	5:40	-	-	-	-

Rain (mm)	2	3	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	1
Temp. °C	21	21	21	22	23	23	23	23	23	24	25	25	24	24	25	26	26	27	29	29	27	25	23	22
Feels °C (?)	20	19	20	22	23	24	24	24	23	25	26	26	25	24	25	25	26	29	31	30	25	22	21	20

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Kanagawa

Wind Update Continuing clean conditions at Kugenuma Rivermouth (calm at Mubeyama wx 15 km from Kugenuma Rivermouth). 1.0m 4s local chop from the NE with a 0.2m 6s windswell from the SSW and a 0.2m 9s swell from the SE. 3 swells combining to make bigger set waves.
43 minutes ago Kugenuma Rivermouth

Expand

View all

Actual: 43 min ago

5 km/h

NNE

Clean

Please reload the page to see if there are any updates.

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.