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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 2 am Saturday 21 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
15.4° C
(Which is 1.5°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 6AM is: 0.2m 6s primary swell from a South direction and 0.1m 7s secondary swell from a Southwest direction (forecast issued at 02:00am March 21). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 0.5ft (0.1m) | 18s |
| Afternoon (21 Mar) | 0.5ft (0.1m) | 17s |
| Evening (21 Mar) | 0.5ft (0.1m) | 16s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| 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) (?) | 7 | 7 | 6 | 18 | 6 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 5 | 15 | 4 | 4 | 6 | 6 | 6 | 6 | 6 | 7 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 8 | 12 | 3 | 6 | 3 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 9 | 10 | 12 | 17 | 25 | 18 | 24 | 76 | 105 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- on | on | on | on | cross- on | off | off | off | glass | on | cross- on | cross- on | cross- on | cross- on | cross- on | glass | cross- on | cross- on | cross | off |
High Tide / height (m) | 5:50AM 1.41 | 6:47PM 1.30 | 6:13AM 1.43 | 7:30PM 1.21 | 6:38AM 1.41 | 8:21PM 1.11 | ||||||||||||||||||
Low Tide / height (m) | 11:52PM 0.47 | 12:19PM 0.12 | 12:14AM 0.56 | 12:54PM 0.10 | 12:35AM 0.67 | 1:35PM 0.12 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| Sunrise | - | - | 5:45 | - | - | - | - | - | - | - | 5:43 | - | - | - | - | - | - | - | 5:43 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:53 | - | - | - | - | - | - | - | 5:54 | - | - |
 |  |  | | | |  | | | | | |  | | | | | | | |  |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - |
| Temp. °C | 9 | 9 | 6 | 7 | 9 | 11 | 12 | 12 | 12 | 10 | 9 | 10 | 12 | 13 | 14 | 13 | 13 | 12 | 12 | 12 | 11 | 12 | 12 | 13 |
| Feels °C (?) | 5 | 2 | -1 | 3 | 4 | 6 | 6 | 6 | 8 | 5 | 3 | 5 | 9 | 8 | 9 | 8 | 8 | 6 | 8 | 9 | 7 | 10 | 10 | 10 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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