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Surf Forecasts:
Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Tuesday 12 May 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
17.1° C
(Which is 2.7°C colder than average for this time of year)How big are the waves at Choshi today?
The current surf forecast for Choshi at 4PM is: 0.8m 10s primary swell from a Southeast direction and 0.5m 9s secondary swell from a East direction (forecast issued at 08:00am May 12). An open ocean swell of 0.1m 9s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 2.5ft (0.7m) | 10s |
| Afternoon (12 May) | 2.5ft (0.8m) | 10s |
| Evening (12 May) | 3.5ft (1.0m) | 9s |
Table - waves today at Choshi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 20°C on Wed afternoon, min 16°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SE 10 | ESE 10 | ESE 10 | SE 10 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 10 | E 10 | |
139 | 83 | 125 | 133 | 166 | 168 | 168 | 165 | 199 | 242 | 293 | 341 | 348 | 356 | 349 | 342 | 332 | 294 | 245 | 240 | 240 | 235 | 192 | 192 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | on | on | on | on | on | glassy | cross-off | cross | cross | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | |
High Tide | 12:03PM0.96m | 1:08AM1.07m | 1:33PM1.03m | 1:34AM1.12m | 2:41PM1.11m | 2:01AM1.19m | ||||||||||||||||||
Low Tide | 6:33AM0.64m | 6:28PM0.46m | 7:25AM0.45m | 7:26PM0.52m | 8:09AM0.25m | 8:15PM0.60m | ||||||||||||||||||
 | | | | |  |  | | | | | |  |  | | | |  | | | | | | | |
 | 4:35 | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:31 |
 | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:32 | — | — | 6:34 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 18 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 19 | 19 | 20 | 19 | 19 | 18 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 |
16 | 16 | 17 | 16 | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 18 | 16 | 16 | 15 | 14 | 13 | 12 | 13 | 13 | 13 | 14 | |
Swell 1 Height (m) Direction Period (s) | SE 10 | ESE 10 | ESE 10 | E 9 | SE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 10 | E 10 |
 kJ | 139 | 83 | 125 | 43 | 166 | 168 | 168 | 165 | 199 | 242 | 293 | 341 | 348 | 356 | 349 | 342 | 332 | 294 | 245 | 240 | 240 | 235 | 192 | 192 |
Swell 2 Height (m) Direction Period (s) | NE 10 | SSE 8 | SE 8 | NE 9 | NE 9 | NE 9 | NE 9 | NE 9 | NE 12 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | SSE 6 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 |
| kJ | 16 | 46 | 24 | 3 | 3 | 3 | 3 | 3 | 6 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 15 | 15 | 20 | 16 | 25 | 24 | 15 | 4 |
Swell 3 Height (m) Direction Period (s) | SSE 8 | NE 10 | ENE 10 | — | — | — | NE 13 | NE 13 | NE 9 | — | — | S 10 | — | S 9 | S 9 | S 9 | S 9 | S 9 | — | — | — | — | — | SSE 12 |
| kJ | 6 | 15 | 9 | — | — | — | 7 | 6 | 3 | — | — | 2 | — | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | 14 |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 3 | NE 4 | NE 5 | NE 5 | NE 5 | NE 5 | NE 5 |
| kJ | — | — | — | 133 | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 29 | 42 | 63 | 48 | 48 | 37 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 56 | 56 | 56 | 56 | 56 | 56 | 0 | 0 | 37 | 71 | 71 | 112 | 71 | 0 | 0 | 37 | 37 | 117 | 115 | 117 | 170 | 117 | 125 | 37 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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