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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Friday 15 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 1.4°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 1PM is: 0.2m 10s primary swell from a East-southeast direction and 0.2m 6s secondary swell from a South-southeast direction (forecast issued at 08:00am May 15). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 0.5ft (0.2m) | 8s |
| Afternoon (15 May) | 2.5ft (0.7m) | 9s |
| Evening (15 May) | 0.5ft (0.2m) | 8s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 23°C on Sun morning, min 16°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SE 8 | SSE 8 | ESE 10 | ESE 9 | SE 8 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 10 | SE 10 | SE 9 | SE 10 | SE 9 | SE 9 | |
10 | 6 | 9 | 73 | 11 | 6 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 12 | 12 | 8 | 9 | 10 | 16 | 33 | 31 | 15 | 31 | 27 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | cross-on | on | cross | cross-off | cross-off | off | cross-off | cross-on | cross-on | on | on | on | glassy | glassy | glassy | cross | on | on | cross-on | glassy | glassy | |
High Tide | 3:10AM1.35m | 5:00PM1.29m | 3:32AM1.40m | 5:37PM1.31m | 3:58AM1.44m | 6:13PM1.31m | ||||||||||||||||||
Low Tide | 10:09AM0.09m | 10:07PM0.82m | 10:38AM0.01m | 10:32PM0.88m | 11:09AM-0.05m | 10:57PM0.92m | ||||||||||||||||||
 | | | | |  | | | | | | | | | |  |  | | | | | | | | |
 | 4:37 | — | — | — | — | — | — | 4:37 | — | — | — | — | — | — | — | 4:37 | — | — | — | — | — | — | — | 4:35 |
 | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | 6:40 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 16 | 19 | 20 | 19 | 17 | 17 | 16 | 16 | 18 | 20 | 21 | 20 | 19 | 19 | 18 | 18 | 21 | 23 | 23 | 21 | 22 | 21 | 21 |
11 | 14 | 18 | 18 | 17 | 16 | 17 | 15 | 15 | 17 | 18 | 18 | 17 | 18 | 18 | 17 | 17 | 20 | 21 | 20 | 16 | 20 | 20 | 21 | |
Swell 1 Height (m) Direction Period (s) | SE 8 | SSE 8 | ESE 10 | SE 8 | SE 8 | SE 3 | SE 8 | SE 8 | SE 8 | SE 8 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 7 | SE 8 | SE 7 | SE 10 | SE 9 | SE 10 | SE 9 | SE 9 |
 kJ | 10 | 6 | 9 | 9 | 11 | 2 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 12 | 12 | 8 | 9 | 10 | 9 | 33 | 31 | 15 | 31 | 27 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SE 11 | SSE 6 | SE 11 | SE 11 | ESE 8 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | — | — | SE 8 | SE 9 | — |
| kJ | 5 | 5 | 4 | 5 | 5 | 6 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 16 | — | — | 11 | 3 | — |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 12 | SE 12 | S 7 | S 7 | SE 11 | S 6 | S 6 | S 6 | S 6 | — | — | E 9 | SE 13 | SE 14 | SE 14 | — | — | — | — | — | — | — | — |
| kJ | 6 | 6 | 5 | 1 | 1 | 5 | 1 | 1 | 1 | 1 | — | — | 2 | 7 | 7 | 7 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | ENE 2 | — | — | ESE 9 | SE 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 3 | S 3 | — | WSW 2 |
| kJ | 1 | — | — | 73 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 57 | 57 | 45 | 26 | 64 | 30 | 30 | 57 | 57 | 24 | 57 | 26 | 57 | 57 | 57 | 57 | 24 | 24 | 24 | 252 | 84 | 30 | 30 | 30 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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