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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 am Monday 23 Mar 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
15.3° C
(Which is 1.6°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 7AM is: 0.4m 5s primary swell from a South direction and 0.1m 14s secondary swell from a Southeast direction, 0.3m 3s secondary swell from a West direction (forecast issued at 02:00am March 23). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Mar) | 1.5ft (0.4m) | 5s |
| Afternoon (23 Mar) | 1.5ft (0.5m) | 6s |
| Evening (23 Mar) | 2.5ft (0.7m) | 8s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 23 | Tuesday 24 | Wednesday 25 | ||||||||||||||||||||||
| 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) (?) | 4 | 15 | 5 | 5 | 6 | 6 | 6 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 8 | 8 | 8 | 9 | 18 | 19 | 20 | 50 | 105 | 108 | 78 | 76 | 34 | 23 | 26 | 16 | 16 | 10 | 10 | 10 | 11 | 11 | 17 | 64 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | cross | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- off | glass | cross- off |
High Tide / height (m) | 6:38AM 1.41 | 8:21PM 1.11 | 7:05AM 1.37 | 9:33PM 1.00 | 7:32AM 1.29 | |||||||||||||||||||
Low Tide / height (m) | 12:35AM 0.67 | 1:35PM 0.12 | 12:55AM 0.78 | 2:24PM 0.19 | 1:05AM 0.89 | 3:33PM 0.28 | ||||||||||||||||||
Monday 23 | Tuesday 24 | Wednesday 25 | ||||||||||||||||||||||
| Sunrise | - | - | 5:43 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:55 | - | - | - | - | - | - | - | 5:57 | - | - |
 | |  | | |  |  | | | | |  | | | |  | | |  | | | |  | | |
Rain (mm) | - | - | 1 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 5 | 12 | 16 |
| Temp. °C | 14 | 13 | 10 | 10 | 10 | 12 | 13 | 12 | 12 | 12 | 10 | 11 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 13 | 11 | 12 | 11 |
| Feels °C (?) | 8 | 8 | 7 | 8 | 7 | 8 | 9 | 10 | 10 | 7 | 5 | 5 | 10 | 8 | 8 | 8 | 9 | 10 | 11 | 10 | 10 | 9 | 11 | 9 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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