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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Wednesday 08 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
15.6° C
(Which is 2.0°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 2PM is: 0.5m 8s primary swell from a South direction and 0.2m 9s secondary swell from a South direction, 0.3m 2s secondary swell from a South direction (forecast issued at 08:00am April 08). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Apr) | 2ft (0.6m) | 8s |
| Afternoon (08 Apr) | 1.5ft (0.5m) | 8s |
| Evening (08 Apr) | 1.5ft (0.4m) | 8s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 08 | Thursday 09 | Friday 10 | Sat 11 | |||||||||||||||||||||
| 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 | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 45 | 50 | 31 | 30 | 66 | 21 | 13 | 6 | 6 | 9 | 22 | 46 | 48 | 45 | 37 | 45 | 92 | 146 | 217 | 196 | 278 | 1023 | 745 | 657 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- on | on | on | on | cross- on | cross- on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross- on | cross- on |
High Tide / height (m) | 6:59AM 1.33 | 10:26PM 1.01 | 7:29AM 1.22 | 4:17AM 1.08 | 8:07AM 1.09 | 2:46AM 1.14 | ||||||||||||||||||
Low Tide / height (m) | 2:38PM 0.20 | 1:02AM 0.98 | 4:00PM 0.31 | 5:54AM 1.08 | 5:54PM 0.37 | |||||||||||||||||||
Wednesday 08 | Thursday 09 | Friday 10 | Sat 11 | |||||||||||||||||||||
| Sunrise | 5:20 | - | - | - | - | - | - | - | 5:18 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:07 | - | - | - | - | - | - | - | 6:08 | - | - | - | - | - | - | - | 6:09 | - | - | - |
 | | | | |  | | | | |  |  | |  |  | | |  | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 5 | - | 1 | 2 | 4 | 2 | 1 | - | - |
| Temp. °C | 9 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 14 | 16 | 16 | 16 | 16 | 14 | 14 | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 17 |
| Feels °C (?) | 2 | 7 | 8 | 7 | 6 | 7 | 8 | 9 | 8 | 8 | 9 | 8 | 10 | 11 | 9 | 8 | 9 | 11 | 10 | 13 | 15 | 16 | 16 | 16 |
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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