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Surf Forecasts:
Kugenuma Rivermouth surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 am Tuesday 19 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
19.8° C
(Which is slightly cooler than normal)How big are the waves at Kugenuma Rivermouth today?
The current surf forecast for Kugenuma Rivermouth at 5PM is: 1.0m 4s primary swell from a South direction and 0.3m 11s secondary swell from a Southeast direction, 0.1m 10s secondary swell from a East direction (forecast issued at 08:00am May 19). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 1.5ft (0.4m) | 10s |
| Afternoon (19 May) | 3.5ft (1.0m) | 4s |
| Evening (19 May) | 1.5ft (0.4m) | 11s |
Table - waves today at Kugenuma Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 30mm), heaviest during Thu afternoon. Warm (max 24°C on Wed morning, min 15°C on Thu night). Winds decreasing (fresh winds from the S on Tue afternoon, calm by Wed night). | ||||||||||||||||||||||||
Tuesday 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SE 10 | SE 10 | SE 11 | S 4 | S 4 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SSW 4 | SE 10 | SE 10 | SE 9 | SE 9 | S 6 | S 6 | S 7 | S 7 | S 8 | S 8 | S 8 | |
16 | 29 | 18 | 37 | 41 | 29 | 29 | 29 | 40 | 38 | 27 | 26 | 31 | 19 | 14 | 14 | 14 | 25 | 38 | 56 | 63 | 90 | 72 | 55 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | glassy | cross-off | off | off | off | off | off | off | off | |
High Tide | 4:58AM1.47m | 7:32PM1.27m | 5:33AM1.44m | 8:17PM1.24m | 6:14AM1.36m | 9:09PM1.22m | ||||||||||||||||||
Low Tide | 12:18PM-0.05m | 00:00AM0.97m | 12:57PM0.01m | 00:43AM0.98m | 1:41PM0.11m | 1:45AM1.00m | ||||||||||||||||||
 | | | | |  | |  |  | | | |  |  |  | |  | | |  | | | | | |
 | 4:35 | — | — | — | — | — | — | 4:35 | — | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:33 |
 | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:43 | — | — | 6:44 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | 3 | 3 | 2 | 8 | 2 | 3 | 1 | 2 | |
Temp °C | 19 | 21 | 22 | 23 | 22 | 21 | 20 | 20 | 20 | 22 | 24 | 24 | 24 | 22 | 21 | 20 | 20 | 17 | 17 | 18 | 17 | 16 | 15 | 15 |
18 | 19 | 18 | 18 | 18 | 19 | 18 | 19 | 19 | 22 | 22 | 21 | 22 | 21 | 21 | 22 | 22 | 15 | 15 | 16 | 13 | 13 | 10 | 10 | |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | S 4 | S 4 | S 6 | S 6 | S 7 | S 7 | S 8 | S 8 | S 8 |
 kJ | 16 | 28 | 18 | 18 | 18 | 29 | 29 | 29 | 40 | 38 | 27 | 26 | 15 | 15 | 14 | 5 | 3 | 25 | 38 | 56 | 63 | 90 | 72 | 55 |
Swell 2 Height (m) Direction Period (s) | SSE 7 | ESE 9 | ESE 9 | E 10 | — | — | — | — | — | — | — | — | — | — | — | SE 9 | SE 9 | SE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SE 11 | SE 9 |
| kJ | 4 | 29 | 16 | 2 | — | — | — | — | — | — | — | — | — | — | — | 14 | 14 | 13 | 9 | 10 | 10 | 10 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 6 | — | — | — | — | — | — | — | SE 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 5 |
Wind waves Height (m) Direction Period (s) | SW 3 | SSW 3 | S 4 | S 4 | S 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | S 4 | S 4 | SSW 4 | SSW 4 | S 4 | — | — | — | NE 3 | NE 3 | NE 3 | NNE 3 | NE 3 | NNE 3 |
| kJ | 3 | 4 | 13 | 37 | 41 | 25 | 15 | 10 | 9 | 6 | 6 | 15 | 31 | 19 | 13 | — | — | — | 1 | 2 | 2 | 4 | 5 | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 30 | 88 | 512 | 252 | 85 | 30 | 30 | 30 | 30 | 89 | 89 | 484 | 30 | 30 | 84 | 26 | 24 | 45 | 45 | 0 | 45 | 0 | 222 | 140 |
Best forecast wave conditions in Kanagawa | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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