Sagami River surf forecast from 26 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 12PM (local time) - 3ft (0.9m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 3AM (local time) - 4ft (1.2m), 12s period, SSW swell with 461 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 12PM (local time) - 2.5ft (0.8m), 6s period with SSW swell.
Best Forecast Surf Conditions for Sagami River this week:
The surf forecast for Sagami River over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 12PM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.6m and 6s. Another secondary swell of 0.4m and 11s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Sagami River in the next 16 days are 1.2m 12s and forecast to arrive on Wednesday (Sep 02) at 3AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 31) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 27th Aug) | 2.5ft (0.8m) 6s |
| Best Surf | 12PM (Tue 1st Sep) | 3ft (0.9m) 13s |
| Most Powerful | 3AM (Wed 2nd Sep) | 4ft (1.2m) 12s |
Table - best surf conditions forecast for Sagami River over the next 16 days.
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Nearest