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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 am Wednesday 22 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
18.3° 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 11AM is: 0.6m 4s primary swell from a South direction and 0.2m 8s secondary swell from a East-southeast direction, 0.1m 10s secondary swell from a Southeast direction (forecast issued at 02:00am April 22). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Apr) | 2ft (0.6m) | 8s |
| Afternoon (22 Apr) | 2.5ft (0.8m) | 4s |
| Evening (22 Apr) | 2ft (0.6m) | 4s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||||||||||
| 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) (?) | 10 | 7 | 7 | 8 | 4 | 4 | 4 | 4 | 5 | 6 | 7 | 5 | 7 | 7 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 9 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 26 | 111 | 25 | 47 | 9 | 18 | 15 | 11 | 13 | 11 | 9 | 6 | 11 | 7 | 7 | 7 | 7 | 7 | 9 | 37 | 68 | 71 | 54 | 36 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- off | cross- off | off | off | cross- off | off | off | off | off | off | off | cross- off | cross | cross | cross |
High Tide / height (m) | 6:28AM 1.37 | 9:29PM 1.09 | 7:02AM 1.26 | 11:16PM 1.07 | 7:46AM 1.13 | |||||||||||||||||||
Low Tide / height (m) | 12:35AM 0.90 | 1:58PM 0.12 | 1:07AM 0.98 | 2:58PM 0.24 | 2:10AM 1.05 | 4:28PM 0.36 | ||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||||||||||
| Sunrise | - | - | 5:01 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 4:58 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:19 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - | - | 6:21 | - |
 | |  |  | |  | |  | | | | | |  |  |  | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 4 | 6 | 9 | 6 | 3 | 1 | - | - | - | - | - |
| Temp. °C | 17 | 17 | 17 | 18 | 19 | 19 | 18 | 18 | 18 | 18 | 17 | 18 | 17 | 14 | 14 | 13 | 13 | 13 | 14 | 15 | 18 | 19 | 17 | 15 |
| Feels °C (?) | 14 | 14 | 12 | 12 | 12 | 12 | 13 | 15 | 17 | 17 | 13 | 15 | 16 | 11 | 8 | 6 | 5 | 6 | 7 | 9 | 12 | 15 | 12 | 11 |
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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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