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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 am Saturday 25 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
19.3° C
(Which is slightly warmer than usual)How big are the waves at Kugenuma Rivermouth today?
The current surf forecast for Kugenuma Rivermouth at 10AM is: 0.4m 8s primary swell from a South direction and 0.1m 12s secondary swell from a East direction (forecast issued at 02:00am April 25). 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 (25 Apr) | 1.5ft (0.4m) | 8s |
| Afternoon (25 Apr) | 1.5ft (0.4m) | 7s |
| Evening (25 Apr) | 1.5ft (0.4m) | 5s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 23mm), heaviest during Mon morning. Very mild (max 17°C on Sun afternoon, min 13°C on Sat morning). Winds increasing (light winds from the SW on Sun morning, fresh winds from the NNE by Mon morning). | ||||||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
S 8 | S 8 | S 8 | S 8 | SSE 8 | SSE 7 | SE 6 | SE 5 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 7 | S 7 | S 7 | |
34 | 32 | 19 | 19 | 19 | 18 | 8 | 7 | 8 | 8 | 9 | 8 | 9 | 9 | 9 | 9 | 9 | 15 | 15 | 15 | 10 | 11 | 24 | 23 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | on | on | cross-on | cross | cross-off | off | cross-off | cross-off | off | off | off | on | |
High Tide | 1:20AM1.12m | 9:44AM0.99m | 1:59AM1.17m | 12:35PM0.97m | 2:26AM1.21m | 2:13PM1.06m | ||||||||||||||||||
Low Tide | 7:12AM0.97m | 6:12PM0.42m | 8:06AM0.80m | 7:29PM0.45m | 8:41AM0.64m | 8:25PM0.48m | ||||||||||||||||||
 |  |  | | | |  |  | | |  | | | | | | |  |  | |  | | | | |
 | — | 4:58 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — | — | 4:56 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:22 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 6 | 9 | 1 | 3 | — | — | |
Temp °C | 14 | 13 | 13 | 13 | 15 | 16 | 16 | 14 | 14 | 13 | 13 | 14 | 16 | 17 | 17 | 17 | 16 | 14 | 14 | 13 | 15 | 14 | 15 | 15 |
10 | 7 | 8 | 8 | 11 | 13 | 12 | 10 | 11 | 11 | 11 | 12 | 14 | 14 | 13 | 16 | 14 | 10 | 8 | 7 | 8 | 10 | 14 | 13 | |
Swell 1 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | S 8 | SSE 8 | SSE 7 | S 7 | S 7 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 | SE 7 | S 7 | S 7 |
 kJ | 34 | 32 | 19 | 19 | 19 | 18 | 4 | 4 | 8 | 8 | 9 | 8 | 9 | 9 | 9 | 9 | 9 | 15 | 15 | 15 | 10 | 11 | 24 | 23 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | E 12 | SE 12 | E 11 | E 11 | E 11 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | — | — | E 13 | — | — | E 12 | — | S 7 | SE 7 | — |
| kJ | 5 | 5 | 5 | 3 | 5 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | 3 | — | — | 3 | — | 10 | 12 | — |
Swell 3 Height (m) Direction Period (s) | — | E 8 | SE 6 | SW 8 | SW 8 | SW 8 | SW 8 | SE 11 | S 6 | — | — | — | — | — | S 7 | — | — | S 16 | SE 8 | — | E 12 | — | S 16 | S 16 |
| kJ | — | 5 | 8 | 11 | 3 | 2 | 3 | 5 | 1 | — | — | — | — | — | 1 | — | — | 5 | 3 | — | 3 | — | 5 | 5 |
Wind waves Height (m) Direction Period (s) | ENE 2 | ENE 2 | NE 3 | NE 3 | ENE 2 | ESE 2 | SE 6 | SE 5 | — | — | — | — | — | — | SSE 2 | — | — | — | N 2 | NNE 3 | N 3 | — | — | — |
| kJ | 1 | 1 | 2 | 2 | 1 | 1 | 8 | 7 | — | — | — | — | — | — | 1 | — | — | — | 2 | 3 | 1 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 45 | 482 | 480 | 463 | 57 | 64 | 64 | 64 | 45 | 45 | 45 | 57 | 24 | 85 | 85 | 30 | 45 | 45 | 108 | 480 | 130 | 137 | 24 | 26 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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