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Surf Forecasts:
Usami surfForecast / Shizuoka / Japan
48hr Weather and Surf, issued 8 am Wednesday 17 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Usami surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Usami sea temperature is
18.4° C
(Which is 1.2°C colder than average for this time of year)How big are the waves at Usami today?
The current surf forecast for Usami at 3PM is: 0.1m 13s primary swell from a Southeast direction and 0.1m 8s secondary swell from a Southeast direction, 0.1m 11s secondary swell from a Southeast direction, 0.4m 4s secondary swell from a Southwest direction (forecast issued at 08:00am December 17). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 0.5ft (0.2m) | 8s |
| Afternoon (17 Dec) | 1.5ft (0.4m) | 4s |
| Evening (17 Dec) | 3ft (0.9m) | 4s |
Table - waves today at Usami. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| 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 | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 6 | 4 | 4 | 4 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 5 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 6 | 6 | 32 | 7 | 28 | 32 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 12 | 5 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | on | cross- on | on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | off | glass | glass | cross- off | cross- off | cross- off | cross- off | glass | glass | cross- on | cross- on | cross- on |
High Tide / height (m) | 3:45AM 1.25 | 1:56PM 1.37 | 4:37AM 1.33 | 2:36PM 1.40 | 5:21AM 1.39 | 3:15PM 1.43 | ||||||||||||||||||
Low Tide / height (m) | 8:34AM 0.96 | 9:19PM 0.16 | 9:27AM 0.99 | 10:00PM 0.05 | 10:13AM 1.01 | 10:39PM -0.02 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Sat 20 | |||||||||||||||||||||
| Sunrise | - | 6:43 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:46 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:32 | - | - | - | - | - | - | - | 4:34 | - | - | - | - | - | - | - | 4:34 | - | - | - | - |
 |  | | | | | | |  |  | | | | | | | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 8 | 10 | 12 | 13 | 12 | 12 | 12 | 10 | 9 | 9 | 10 | 11 | 10 | 10 | 11 | 10 | 9 | 10 | 13 | 13 | 13 | 13 | 14 | 14 |
| Feels °C (?) | 7 | 8 | 10 | 8 | 7 | 6 | 9 | 7 | 4 | 4 | 6 | 8 | 7 | 8 | 9 | 8 | 6 | 7 | 11 | 12 | 12 | 12 | 13 | 12 |
- Map Icons:
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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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