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Surf Forecasts:
Sagami River surfForecast / Kanagawa / Japan
48hr Weather and Surf, issued 8 pm Thursday 16 Apr 2026 JSTForecast update in hr min s Forecast update imminent
Sagami River surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sagami River sea temperature is
16.3° C
(Which is 1.8°C colder than average for this time of year)How big are the waves at Sagami River today?
The current surf forecast for Sagami River at 2AM is: 1.2m 15s primary swell from a South-southeast direction and 0.1m 9s secondary swell from a Southeast direction (forecast issued at 08:00pm April 16). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 4ft (1.2m) | 15s |
| Afternoon (17 Apr) | 4ft (1.2m) | 14s |
| Evening (17 Apr) | 4.5ft (1.4m) | 16s |
Table - waves today at Sagami River. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 15 | 16 | 15 | 15 | 15 | 14 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 419 | 389 | 596 | 645 | 637 | 612 | 619 | 565 | 491 | 1036 | 1165 | 1255 | 1239 | 1224 | 1082 | 1055 | 1037 | 904 | 904 | 962 | 949 | 924 | 924 | 974 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | on | on | on | cross- on | cross | cross- off | cross- on | on | on | on | cross- on | glass | glass | cross- off | cross- off | cross | on |
High Tide / height (m) | 4:17PM 1.48 | 4:06AM 1.52 | 5:03PM 1.53 | 4:30AM 1.55 | 5:50PM 1.54 | 4:55AM 1.57 | ||||||||||||||||||
Low Tide / height (m) | 10:11PM 0.53 | 10:33AM 0.19 | 10:46PM 0.62 | 11:08AM 0.06 | 11:21PM 0.73 | 11:46AM -0.01 | ||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:07 | - | - | - | - | - | - | - | 5:07 | - | - | - | - | - | - | - | 5:05 | - | - | - |
| Sunset | 6:15 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - |
 |  | | | | |  | | |  |  | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 13 | 12 | 11 | 10 | 12 | 15 | 16 | 15 | 13 | 13 | 13 | 13 | 15 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 18 | 20 | 21 |
| Feels °C (?) | 9 | 7 | 7 | 6 | 5 | 8 | 11 | 13 | 12 | 11 | 12 | 12 | 11 | 13 | 14 | 14 | 15 | 15 | 16 | 16 | 15 | 15 | 18 | 19 |
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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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