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Surf Forecasts:
Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Monday 15 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Choshi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Choshi sea temperature is
16.5° C
(Which is 2.6°C colder than average for this time of year)How big are the waves at Choshi today?
The current surf forecast for Choshi at 9PM is: 0.3m 10s primary swell from a East-southeast direction and 0.4m 9s secondary swell from a Southeast direction (forecast issued at 02:00pm December 15). An open ocean swell of 0.4m 7s is not directed at the surf break, a second open ocean swell of 0.4m 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 (15 Dec) | - | - |
| Afternoon (15 Dec) | 1.5ft (0.5m) | 9s |
| Evening (15 Dec) | 1.5ft (0.4m) | 9s |
Table - waves today at Choshi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 13 | 8 | 12 | 10 | 12 | 12 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 18 | 17 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 75 | 42 | 32 | 20 | 33 | 20 | 59 | 18 | 94 | 85 | 82 | 81 | 119 | 106 | 104 | 98 | 63 | 61 | 57 | 63 | 61 | 101 | 89 | 132 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | glass | cross- off | cross- off | off | off | cross- off | cross- off | glass | glass | off | cross- off | cross | cross- off | cross- off |
High Tide / height (m) | 12:03PM 1.29 | 2:40AM 1.05 | 12:42PM 1.33 | 3:33AM 1.12 | 1:20PM 1.36 | 4:14AM 1.19 | ||||||||||||||||||
Low Tide / height (m) | 7:45PM 0.45 | 6:42AM 0.92 | 8:24PM 0.33 | 7:42AM 0.95 | 8:59PM 0.23 | 8:33AM 0.97 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:39 |
| Sunset | - | 4:23 | - | - | - | - | - | - | - | 4:23 | - | - | - | - | - | - | - | 4:23 | - | - | - | - | - | - |
 | |  | |  |  | |  | | | | | | | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - |
| Temp. °C | 12 | 12 | 11 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 10 | 10 | 10 | 9 | 10 | 11 | 12 | 12 | 12 | 12 | 11 | 10 | 10 |
| Feels °C (?) | 3 | 3 | 4 | 5 | 5 | 5 | 6 | 7 | 7 | 7 | 9 | 7 | 7 | 6 | 5 | 7 | 8 | 10 | 10 | 8 | 7 | 5 | 3 | 3 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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