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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 pm Tuesday 24 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 1AM is: 0.4m 8s primary swell from a Southeast direction and 0.2m 7s secondary swell from a South-southwest direction, 0.2m 3s secondary swell from a South-southeast direction (forecast issued at 08:00pm March 24). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Mar) | 1ft (0.3m) | 8s |
| Afternoon (25 Mar) | 2.5ft (0.8m) | 5s |
| Evening (25 Mar) | 4ft (1.2m) | 6s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| 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 | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 5 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 23 | 12 | 15 | 15 | 9 | 10 | 6 | 31 | 100 | 110 | 132 | 396 | 134 | 145 | 177 | 284 | 296 | 256 | 216 | 177 | 125 | 101 | 81 | 79 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross | cross | cross- off | cross- off | off | off | off | off | cross- off | off | off | off | off | cross- off |
High Tide / height (m) | 9:33PM 1.00 | 7:32AM 1.29 | 7:59AM 1.18 | 4:01AM 1.11 | ||||||||||||||||||||
Low Tide / height (m) | 1:05AM 0.89 | 3:33PM 0.28 | 5:24PM 0.34 | |||||||||||||||||||||
Tue 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - |
| Sunset | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - | 5:58 |
 | | | |  |  | | |  |  | | | | | | | | |  | |  |  | | | |
Rain (mm) | - | - | - | - | - | 1 | 1 | 3 | 7 | 4 | 2 | 2 | 3 | 3 | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 13 | 13 | 12 | 11 | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 13 | 15 | 15 |
| Feels °C (?) | 6 | 7 | 9 | 9 | 10 | 11 | 11 | 9 | 7 | 7 | 8 | 8 | 8 | 7 | 8 | 9 | 7 | 7 | 7 | 7 | 8 | 9 | 11 | 12 |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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