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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 am Sunday 07 Dec 2025 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
19.5° C
(Which is normal for this time of year)How big are the waves at Kugenuma Rivermouth today?
The current surf forecast for Kugenuma Rivermouth at 5AM is: 0.6m 5s primary swell from a Southwest direction and 0.1m 8s secondary swell from a Southeast direction (forecast issued at 02:00am December 07). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Dec) | 3.5ft (1.0m) | 5s |
| Afternoon (07 Dec) | 1.5ft (0.4m) | 5s |
| Evening (07 Dec) | 0.5ft (0.1m) | 9s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 07 | Monday 08 | Tuesday 09 | ||||||||||||||||||||||
| 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 17 | 4 | 5 | 5 | 6 | 5 | 9 | 9 | 9 | 9 | 10 | 5 | 5 | 6 | 6 | 6 | 6 | 5 | 10 | 9 | 9 | 9 | 9 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6 | 9 | 76 | 55 | 12 | 7 | 3 | 3 | 3 | 3 | 4 | 55 | 25 | 203 | 213 | 78 | 15 | 3 | 4 | 3 | 3 | 3 | 3 | 4 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- off | off | off | glass | glass | glass | cross- off | cross- off | glass | cross | cross- on | cross- on | cross | off | off | off | off | off | off | cross- off | cross- on | glass |
High Tide / height (m) | 7:05AM 1.37 | 4:57PM 1.52 | 7:41AM 1.36 | 5:39PM 1.47 | 8:19AM 1.34 | 6:26PM 1.39 | ||||||||||||||||||
Low Tide / height (m) | 11:47PM -0.01 | 11:35AM 1.07 | 12:23AM 0.02 | 12:16PM 1.05 | 1:01AM 0.09 | 1:08PM 1.02 | ||||||||||||||||||
Sunday 07 | Monday 08 | Tuesday 09 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - |
| Sunset | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - | - | - | - | - | - | 4:29 | - | - |
 | | |  | | | | | | | |  |  | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 10 | 9 | 8 | 9 | 11 | 12 | 13 | 13 | 12 | 11 | 11 | 11 | 14 | 17 | 15 | 13 | 11 | 9 | 9 | 9 | 10 | 11 | 11 | 11 |
| Feels °C (?) | 6 | 4 | 4 | 5 | 8 | 10 | 10 | 11 | 9 | 7 | 8 | 7 | 8 | 8 | 9 | 6 | 4 | 1 | 2 | 3 | 4 | 7 | 8 | 8 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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