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Surf Forecasts:
Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Wednesday 13 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
17.3° C
(Which is 2.5°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: 1.3m 9s primary swell from a East-southeast direction (forecast issued at 08:00am May 13). An open ocean swell of 0.1m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 4ft (1.2m) | 9s |
| Afternoon (13 May) | 4.5ft (1.3m) | 10s |
| Evening (13 May) | 4.5ft (1.3m) | 10s |
Table - waves today at Choshi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 20°C on Wed morning, min 15°C on Thu night). Winds increasing (light winds from the ENE on Wed morning, fresh winds from the NE by Thu night). | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | Sat 16 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | ESE 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
199 | 242 | 248 | 305 | 307 | 307 | 307 | 294 | 288 | 267 | 193 | 185 | 212 | 217 | 188 | 184 | 184 | 300 | 211 | 171 | 168 | 164 | 133 | 130 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-on | on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-off | |
High Tide | 1:33PM1.03m | 1:34AM1.12m | 2:41PM1.11m | 2:01AM1.19m | 3:40PM1.18m | 2:29AM1.25m | ||||||||||||||||||
Low Tide | 7:25AM0.45m | 7:26PM0.52m | 8:09AM0.25m | 8:15PM0.60m | 8:51AM0.06m | 9:00PM0.68m | ||||||||||||||||||
 | | | |  |  |  | |  |  | | | | | | | | | | | |  | | | |
 | 4:33 | — | — | — | — | — | — | 4:33 | — | — | — | — | — | — | — | 4:31 | — | — | — | — | — | — | — | 4:31 |
 | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:32 | — | — | — | — | — | — | — | 6:34 | — | — | 6:35 |
— | — | — | — | — | 1 | — | — | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 19 | 20 | 20 | 20 | 20 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 15 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 18 | 18 | 18 |
18 | 19 | 19 | 18 | 19 | 20 | 18 | 16 | 16 | 16 | 15 | 13 | 13 | 10 | 11 | 11 | 11 | 12 | 13 | 15 | 15 | 17 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | ESE 9 | E 9 | E 9 | E 10 | E 10 | E 10 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
 kJ | 199 | 242 | 248 | 305 | 307 | 307 | 307 | 294 | 288 | 267 | 193 | 185 | 212 | 217 | 188 | 184 | 184 | 8 | 211 | 171 | 168 | 164 | 133 | 130 |
Swell 2 Height (m) Direction Period (s) | NE 12 | NE 11 | NE 11 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | NE 10 | — | — | NE 10 | E 16 | E 16 | NE 9 | NE 7 | NE 7 | NE 7 | NE 6 | NE 6 |
| kJ | 6 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 15 | 25 | 16 | 15 | — | — | 14 | 5 | 5 | 3 | 29 | 16 | 15 | 10 | 5 |
Swell 3 Height (m) Direction Period (s) | NE 9 | NE 8 | — | S 10 | — | S 9 | S 9 | S 9 | S 9 | S 7 | S 7 | — | — | — | — | — | SE 16 | SE 11 | SE 10 | S 7 | NE 9 | NE 9 | SE 11 | SE 11 |
| kJ | 3 | 3 | — | 2 | — | 2 | 2 | 2 | 2 | 1 | 1 | — | — | — | — | — | 10 | 20 | 33 | 1 | 3 | 3 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NE 4 | NE 4 | NE 4 | NE 5 | NE 5 | NE 5 | NE 5 | E 9 | NE 7 | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 10 | 13 | 25 | 41 | 46 | 48 | 38 | 300 | 37 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 71 | 71 | 56 | 56 | 56 | 0 | 0 | 0 | 37 | 117 | 115 | 117 | 159 | 117 | 125 | 125 | 125 | 125 | 117 | 112 | 170 | 71 | 71 | 0 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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