- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 pm Saturday 09 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
20.4° C
(Which is slightly warmer than usual)How big are the waves at Kugenuma Rivermouth today?
The current surf forecast for Kugenuma Rivermouth at 4AM is: 0.3m 11s primary swell from a Southeast direction and 0.3m 4s secondary swell from a South direction (forecast issued at 08:00pm May 09). An open ocean swell of 0.3m 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 (10 May) | 1ft (0.3m) | 10s |
| Afternoon (10 May) | 2.5ft (0.7m) | 5s |
| Evening (10 May) | 3.5ft (1.0m) | 6s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Sun night. Very mild (max 19°C on Sun morning, min 16°C on Sat night). Winds decreasing (fresh winds from the S on Mon afternoon, light winds from the SSW by Mon night). | ||||||||||||||||||||||||
Sat 9 | Sunday 10 | Monday 11 | Tuesday 12 | |||||||||||||||||||||
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 | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | S 5 | S 4 | S 4 | SE 10 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | |
22 | 18 | 18 | 18 | 17 | 16 | 15 | 27 | 59 | 71 | 61 | 56 | 43 | 30 | 28 | 19 | 21 | 46 | 145 | 62 | 48 | 47 | 46 | 35 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | |
High Tide | 00:37AM1.17m | 11:09AM0.96m | 1:23AM1.20m | 1:22PM1.01m | 1:56AM1.24m | 2:41PM1.10m | ||||||||||||||||||
Low Tide | 4:48PM0.43m | 7:08AM0.84m | 6:19PM0.51m | 7:58AM0.67m | 7:30PM0.57m | 8:36AM0.50m | ||||||||||||||||||
 |  |  | |  | | | | | | |  | | | | | | | | | | | | | |
 | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — |
 | 6:32 | — | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | 6:36 |
— | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 18 | 18 | 16 | 16 | 17 | 19 | 18 | 18 | 18 | 17 | 17 | 17 | 18 | 19 | 19 | 19 | 18 | 17 | 17 | 17 | 18 | 18 | 18 |
15 | 16 | 16 | 13 | 11 | 12 | 16 | 14 | 14 | 15 | 13 | 14 | 14 | 15 | 14 | 13 | 14 | 14 | 14 | 14 | 16 | 16 | 14 | 14 | |
Swell 1 Height (m) Direction Period (s) | SE 11 | SE 11 | S 4 | SE 11 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 9 | SE 11 | SE 8 | SSE 6 | SE 11 | ESE 11 | ESE 11 | ESE 10 | SE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 |
 kJ | 18 | 18 | 2 | 18 | 17 | 16 | 15 | 14 | 3 | 3 | 5 | 3 | 43 | 4 | 11 | 11 | 11 | 28 | 145 | 62 | 48 | 47 | 46 | 35 |
Swell 2 Height (m) Direction Period (s) | WSW 8 | S 6 | SE 11 | S 4 | S 3 | S 4 | S 6 | W 6 | SE 11 | SE 11 | SE 9 | SE 11 | SE 9 | SE 8 | — | — | — | SE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | — | SE 11 |
| kJ | 6 | 3 | 18 | 2 | 1 | 1 | 1 | 1 | 5 | 5 | 3 | 5 | 3 | 3 | — | — | — | 46 | 15 | 32 | 33 | 34 | — | 5 |
Swell 3 Height (m) Direction Period (s) | S 7 | — | S 6 | S 6 | S 6 | S 6 | — | — | W 6 | — | — | — | SE 11 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 8 | — | 3 | 1 | 3 | 1 | — | — | 1 | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 6 | SSW 3 | — | ESE 3 | — | ESE 3 | SE 4 | SE 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | — | S 6 | S 5 | S 4 | S 4 | S 4 | SSE 8 | — | — | — | — | S 2 |
| kJ | 22 | 4 | — | 2 | — | 1 | 4 | 27 | 59 | 71 | 61 | 56 | — | 30 | 28 | 19 | 21 | 11 | 54 | — | — | — | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 84 | 85 | 30 | 30 | 30 | 140 | 140 | 85 | 85 | 85 | 85 | 30 | 30 | 85 | 85 | 85 | 85 | 85 | 22 | 7 | 7 | 26 | 64 | 64 |
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