- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Sunday 12 Apr 2026 JSTForecast 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
15.4° C
(Which is 2.5°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 5PM is: 0.2m 11s primary swell from a East-southeast direction and 0.1m 7s secondary swell from a Southwest direction, 0.6m 4s secondary swell from a South direction (forecast issued at 08:00am April 12). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Apr) | 1.5ft (0.4m) | 7s |
| Afternoon (12 Apr) | 2ft (0.6m) | 7s |
| Evening (12 Apr) | 1ft (0.3m) | 11s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 12 | Monday 13 | Tuesday 14 | Wed 15 | |||||||||||||||||||||
| 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) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 7 | 7 | 7 | 4 | 11 | 6 | 6 | 11 | 5 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 32 | 17 | 16 | 32 | 13 | 20 | 27 | 25 | 19 | 32 | 19 | 57 | 19 | 19 | 19 | 19 | 31 | 44 | 48 | 50 | 52 | 72 | 73 | 78 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | on | on | cross- on | on | on | on | cross- on | glass | cross- on | cross- on | cross- on | cross | glass | glass | cross- off | cross- off | cross- off | cross- on | cross- on | cross | cross | cross- off |
High Tide / height (m) | 1:38PM 1.03 | 3:15AM 1.23 | 2:49PM 1.13 | 3:32AM 1.26 | 3:37PM 1.22 | |||||||||||||||||||
Low Tide / height (m) | 8:48AM 0.78 | 8:24PM 0.37 | 9:15AM 0.62 | 9:09PM 0.38 | 9:41AM 0.47 | 9:44PM 0.43 | ||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wed 15 | |||||||||||||||||||||
| Sunrise | 5:15 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:11 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:10 | - | - | - | - | - | - | - | 6:12 | - | - | - | - | - | - | - | 6:13 | - | - | - |
 |  | | | |  |  | |  | | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 19 | 18 | 18 | 17 | 17 | 16 | 16 | 17 | 20 | 20 | 18 | 17 | 16 | 16 |
| Feels °C (?) | 12 | 12 | 12 | 11 | 12 | 14 | 14 | 15 | 16 | 17 | 18 | 16 | 17 | 17 | 18 | 17 | 16 | 16 | 19 | 17 | 15 | 16 | 15 | 15 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
Nearest