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Surf Forecasts:
Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Tuesday 21 Apr 2026 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
15.8° C
(Which is 2.2°C colder than average for this time of year)How big are the waves at Choshi today?
The current surf forecast for Choshi at 1PM is: 1.5m 11s primary swell from a Southeast direction and 1.2m 6s secondary swell from a South direction (forecast issued at 08:00am April 21). An open ocean swell of 0.4m 16s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Apr) | 6ft (1.8m) | 11s |
| Afternoon (21 Apr) | 4.5ft (1.3m) | 11s |
| Evening (21 Apr) | 3.5ft (1.1m) | 11s |
Table - waves today at Choshi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 21 | Wednesday 22 | Thursday 23 | Fri 24 | |||||||||||||||||||||
| 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) (?) | 12 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 12 | 14 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 541 | 756 | 534 | 396 | 451 | 275 | 251 | 231 | 221 | 180 | 136 | 106 | 136 | 80 | 74 | 79 | 51 | 50 | 49 | 49 | 47 | 45 | 29 | 50 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross- off | cross | cross | cross | cross | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | glass | glass | cross- on | cross- on | cross- on | on | cross | cross- off |
High Tide / height (m) | 5:05AM 1.31 | 7:59PM 1.06 | 5:35AM 1.28 | 9:17PM 0.98 | 6:08AM 1.21 | 11:30PM 0.95 | ||||||||||||||||||
Low Tide / height (m) | 12:38PM -0.15 | 12:12AM 0.87 | 1:28PM -0.06 | 12:40AM 0.91 | 2:27PM 0.06 | 1:20AM 0.94 | ||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Fri 24 | |||||||||||||||||||||
| Sunrise | 4:56 | - | - | - | - | - | - | - | 4:56 | - | - | - | - | - | - | - | 4:54 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:14 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:15 | - | - | - |
 |  |  | | |  |  |  | | |  | | | | | | |  | | | |  | | | |
Rain (mm) | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 1 | 2 | 3 | 4 | 4 |
| Temp. °C | 18 | 19 | 13 | 16 | 17 | 16 | 15 | 15 | 15 | 17 | 17 | 18 | 17 | 18 | 18 | 17 | 17 | 18 | 18 | 16 | 14 | 13 | 13 | 14 |
| Feels °C (?) | 13 | 14 | 6 | 11 | 10 | 10 | 11 | 11 | 11 | 13 | 11 | 13 | 13 | 16 | 17 | 17 | 18 | 18 | 16 | 11 | 11 | 12 | 11 | 9 |
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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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