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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Tuesday 12 May 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
20.2° 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 3PM is: 0.6m 9s primary swell from a Southeast direction and 0.3m 2s secondary swell from a South direction (forecast issued at 08:00am May 12). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 2.5ft (0.7m) | 9s |
| Afternoon (12 May) | 2ft (0.6m) | 9s |
| Evening (12 May) | 2ft (0.6m) | 9s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 21°C on Wed morning, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 11 | SE 11 | SE 9 | SE 10 | SE 10 | SE 10 | SE 6 | SE 7 | SE 7 | SE 7 | ESE 10 | SSE 7 | ESE 11 | |
67 | 79 | 86 | 71 | 88 | 67 | 51 | 50 | 50 | 51 | 41 | 55 | 55 | 29 | 33 | 23 | 25 | 10 | 13 | 12 | 11 | 9 | 5 | 12 | |
Wind (km/h) | ||||||||||||||||||||||||
on | cross-on | on | on | on | cross-on | glassy | glassy | off | cross-off | cross-on | on | on | cross-off | cross-off | off | off | cross-off | cross-off | cross-on | on | cross-off | cross-off | cross-off | |
High Tide | 2:41PM1.10m | 2:23AM1.27m | 3:36PM1.19m | 2:47AM1.31m | 4:20PM1.26m | |||||||||||||||||||
Low Tide | 8:36AM0.50m | 8:23PM0.63m | 9:09AM0.35m | 9:05PM0.69m | 9:39AM0.21m | 9:39PM0.76m | ||||||||||||||||||
 |  | | | |  | | |  | | | | |  |  | |  | | | | | | | | |
 | 4:41 | — | — | — | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:39 | — | — | — | — | — | — | — | 4:37 |
 | — | — | — | — | 6:36 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | 6:37 |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | — | — | — | — | — | — | — | |
Temp °C | 17 | 18 | 19 | 19 | 19 | 18 | 18 | 17 | 17 | 19 | 21 | 21 | 20 | 21 | 19 | 19 | 18 | 19 | 21 | 21 | 20 | 18 | 17 | 16 |
16 | 17 | 17 | 16 | 16 | 16 | 18 | 17 | 16 | 17 | 19 | 18 | 18 | 20 | 18 | 18 | 17 | 17 | 18 | 19 | 19 | 16 | 15 | 14 | |
Swell 1 Height (m) Direction Period (s) | SSE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 11 | SE 11 | SE 9 | SE 10 | SE 10 | SE 10 | SE 6 | SE 7 | SE 7 | SE 7 | SSE 7 | SSE 7 | SSE 6 |
 kJ | 67 | 79 | 86 | 71 | 88 | 67 | 51 | 50 | 50 | 51 | 41 | 55 | 55 | 29 | 33 | 23 | 25 | 8 | 13 | 12 | 11 | 4 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 9 | S 9 | — | S 8 | S 8 | ESE 11 | SE 11 | SSE 6 | SSE 5 | ESE 10 | ESE 10 | ESE 10 | SE 10 | SE 11 | SE 11 | ESE 11 |
| kJ | — | — | — | — | — | — | — | — | 2 | 1 | — | 1 | 1 | 12 | 5 | 4 | 3 | 10 | 10 | 9 | 4 | 4 | 5 | 12 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 11 | — | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | E 9 | ESE 10 | SE 8 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | — | 4 | 4 | 4 | 4 | 4 | 6 | 9 | 3 | — |
Wind waves Height (m) Direction Period (s) | — | — | — | S 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ENE 2 | — | — | — | ENE 2 | NE 3 |
| kJ | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 1 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 7 | 24 | 26 | 49 | 7 | 30 | 2 | 2 | 2 | 2 | 24 | 26 | 45 | 24 | 30 | 30 | 30 | 45 | 24 | 45 | 64 | 45 | 57 | 57 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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