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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 pm Sunday 10 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
20.8° C
(Which is slightly warmer than usual)How big are the waves at Kugenuma Rivermouth today?
The current surf forecast for Kugenuma Rivermouth at 5PM is: 0.7m 6s primary swell from a South-southeast direction and 0.2m 9s secondary swell from a East-southeast direction, 0.1m 11s secondary swell from a Southeast direction (forecast issued at 02:00pm May 10). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 May) | - | - |
| Afternoon (10 May) | 1.5ft (0.5m) | 6s |
| Evening (10 May) | 2.5ft (0.7m) | 6s |
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 2mm), mostly falling on Sun night. Very mild (max 19°C on Sun afternoon, min 16°C on Tue night). Winds decreasing (fresh winds from the S on Mon afternoon, calm by Tue night). | ||||||||||||||||||||||||
Sun 10 | Monday 11 | Tuesday 12 | Wed 13 | |||||||||||||||||||||
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 10 | SSE 6 | 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 | SE 9 | SE 9 | SE 10 | SE 10 | SE 9 | SE 9 | SE 11 | SE 9 | SE 9 | |
15 | 20 | 34 | 35 | 29 | 26 | 33 | 30 | 27 | 29 | 29 | 25 | 161 | 80 | 64 | 81 | 70 | 76 | 57 | 53 | 53 | 55 | 41 | 28 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | on | on | cross-on | glassy | glassy | off | cross-off | |
High Tide | 11:09AM0.96m | 1:23AM1.20m | 1:22PM1.01m | 1:56AM1.24m | 2:41PM1.10m | 2:23AM1.27m | ||||||||||||||||||
Low Tide | 6:19PM0.51m | 7:58AM0.67m | 7:30PM0.57m | 8:36AM0.50m | 8:23PM0.63m | |||||||||||||||||||
 | | |  | |  |  |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:41 | — | — | — | — | — | — | — | 4:39 | — | — |
 | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:36 | — | — | — | — | 6:37 |
— | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 18 | 19 | 19 | 18 | 18 | 17 | 17 | 17 | 18 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 18 |
16 | 14 | 16 | 15 | 15 | 14 | 14 | 15 | 14 | 13 | 13 | 14 | 14 | 15 | 15 | 17 | 16 | 15 | 15 | 17 | 17 | 18 | 16 | 17 | |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 9 | ESE 9 | SE 9 | SE 9 | SE 11 | SE 8 | SE 11 | SE 11 | ESE 11 | ESE 11 | ESE 10 | SSE 9 | SSE 8 | SSE 8 | SE 9 | SE 9 | SE 10 | SE 10 | SE 9 | SE 9 | SE 11 | SE 9 | SE 9 |
 kJ | 15 | 14 | 8 | 3 | 3 | 5 | 3 | 4 | 18 | 11 | 11 | 11 | 161 | 80 | 64 | 81 | 70 | 76 | 57 | 53 | 53 | 55 | 41 | 28 |
Swell 2 Height (m) Direction Period (s) | S 6 | S 6 | SE 11 | SE 11 | SE 11 | SE 8 | SE 11 | SE 8 | — | — | — | SE 10 | ESE 8 | — | — | — | — | — | — | — | — | — | S 9 | SE 11 |
| kJ | 1 | 1 | 5 | 5 | 5 | 3 | 5 | 3 | — | — | — | 25 | 28 | — | — | — | — | — | — | — | — | — | 2 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | S 5 | S 4 | S 4 | S 4 | SSE 8 | — | — | — | — | S 3 | S 3 | — | — | — | — | — |
| kJ | — | 20 | 34 | 35 | 29 | 26 | 33 | 30 | 27 | 29 | 29 | 18 | 70 | — | — | — | — | 1 | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 30 | 140 | 64 | 463 | 484 | 85 | 85 | 85 | 84 | 85 | 85 | 85 | 85 | 85 | 30 | 7 | 7 | 26 | 64 | 64 | 64 | 30 | 30 | 2 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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