- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 pm Wednesday 13 May 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
18.9° C
(Which is 1.3°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 7PM is: 0.4m 9s primary swell from a Southeast direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 02:00pm May 13). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | - | - |
| Afternoon (13 May) | 1.5ft (0.5m) | 9s |
| Evening (13 May) | 1.5ft (0.4m) | 9s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 6mm), mostly falling on Thu night. Warm (max 22°C on Thu morning, min 14°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 10 | ESE 11 | ESE 8 | SE 8 | SSE 6 | ESE 6 | E 10 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | |
41 | 41 | 31 | 29 | 34 | 33 | 24 | 19 | 9 | 9 | 10 | 16 | 11 | 6 | 10 | 5 | 5 | 48 | 11 | 11 | 10 | 9 | 9 | 9 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | cross-off | off | off | off | cross-off | cross-off | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-on | on | cross | glassy | off | off | cross-off | |
High Tide | 3:36PM1.19m | 2:47AM1.31m | 4:20PM1.26m | 3:10AM1.35m | 5:00PM1.29m | 3:32AM1.40m | ||||||||||||||||||
Low Tide | 9:09AM0.35m | 9:05PM0.69m | 9:39AM0.21m | 9:39PM0.76m | 10:09AM0.09m | 10:07PM0.82m | ||||||||||||||||||
 |  |  |  |  |  | | | | |  | |  | | | | | | | | | | | | |
 | — | — | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:37 | — | — | — | — | — | — | — | 4:37 | — | — |
 | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | 6:38 |
— | — | — | — | — | 1 | — | — | — | — | 1 | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 21 | 20 | 21 | 19 | 18 | 18 | 20 | 22 | 20 | 20 | 17 | 15 | 15 | 14 | 16 | 19 | 20 | 19 | 17 | 17 | 16 | 16 | 19 |
19 | 19 | 20 | 20 | 18 | 17 | 17 | 18 | 20 | 18 | 19 | 13 | 13 | 12 | 11 | 14 | 17 | 18 | 17 | 17 | 18 | 16 | 15 | 17 | |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 10 | SE 10 | SE 10 | ESE 10 | ESE 10 | SSE 7 | ESE 10 | SE 10 | SSE 6 | ESE 8 | SE 8 | SSE 6 | ESE 6 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
 kJ | 41 | 41 | 31 | 29 | 34 | 33 | 24 | 19 | 9 | 5 | 10 | 16 | 4 | 6 | 10 | 3 | 4 | 10 | 11 | 11 | 10 | 9 | 9 | 9 |
Swell 2 Height (m) Direction Period (s) | — | — | SE 11 | ESE 11 | SE 11 | SE 10 | SE 10 | SSE 8 | SSE 8 | ESE 10 | E 9 | E 9 | ESE 11 | SE 11 | SE 11 | SE 8 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 |
| kJ | — | — | 5 | 12 | 5 | 4 | 4 | 6 | 6 | 9 | 2 | 2 | 11 | 5 | 5 | 3 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | S 8 | — | S 7 | SE 10 | SE 10 | SE 10 | — | S 7 | ESE 3 | SSE 6 | E 5 | SE 11 | SE 12 | E 9 | S 7 | S 6 | S 6 | S 6 | — | — |
| kJ | — | — | — | — | 1 | — | 1 | 4 | 4 | 4 | — | 1 | 1 | 3 | 2 | 5 | 5 | 2 | 1 | 1 | 1 | 1 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SE 6 | ESE 2 | — | NE 3 | NE 3 | ENE 2 | — | E 10 | SSE 3 | SE 3 | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 6 | 1 | — | 2 | 2 | 1 | — | 48 | 1 | 2 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 24 | 26 | 26 | 24 | 30 | 30 | 24 | 24 | 45 | 64 | 30 | 480 | 30 | 57 | 57 | 45 | 57 | 24 | 64 | 30 | 30 | 57 | 24 | 24 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- 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