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Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Thursday 21 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
20.0° C
(Which is slightly cooler than normal)How big are the waves at Choshi today?
The current surf forecast for Choshi at 1PM is: 1.0m 7s primary swell from a South-southeast direction and 0.6m 10s secondary swell from a East-southeast direction (forecast issued at 08:00am May 21). An open ocean swell of 0.8m 5s 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 May) | 4.5ft (1.4m) | 6s |
| Afternoon (21 May) | 3.5ft (1.0m) | 8s |
| Evening (21 May) | 2.5ft (0.8m) | 8s |
Table - waves today at Choshi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 27mm), heaviest during Thu afternoon. Warm (max 22°C on Thu morning, min 14°C on Fri night). Winds increasing (light winds from the NNW on Thu morning, strong winds from the NNE by Fri morning). | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 10 | S 6 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 8 | ENE 7 | ENE 7 | SSE 7 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | ESE 9 | |
74 | 156 | 99 | 120 | 101 | 87 | 68 | 43 | 311 | 387 | 17 | 897 | 1012 | 919 | 721 | 637 | 566 | 408 | 349 | 482 | 299 | 257 | 258 | 304 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross | cross | cross | cross | cross | on | on | on | |
High Tide | 5:33AM1.27m | 9:00PM1.05m | 6:23AM1.19m | 9:57PM1.01m | 7:26AM1.07m | 10:48PM1.00m | ||||||||||||||||||
Low Tide | 1:22PM-0.03m | 1:10AM0.90m | 2:16PM0.11m | 2:21AM0.86m | 3:13PM0.26m | |||||||||||||||||||
 |  | |  | |  | | | | | | |  |  | | | | |  | | | |  | | |
 | 4:28 | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 |
 | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | 6:40 |
2 | 2 | 3 | 12 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 19 | 17 | 16 | 16 | 17 | 17 | 18 | 17 | 16 | 15 | 15 | 14 | 15 | 15 | 15 | 16 | 17 | 18 | 19 | 19 | 19 | 19 |
23 | 23 | 20 | 13 | 11 | 11 | 12 | 12 | 13 | 10 | 7 | 6 | 6 | 7 | 9 | 9 | 9 | 11 | 12 | 14 | 17 | 16 | 16 | 17 | |
Swell 1 Height (m) Direction Period (s) | SSE 5 | SSE 6 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 8 | S 7 | S 7 | SSE 7 | SSE 7 | S 7 | S 9 | S 9 | S 7 | S 7 | S 7 | S 6 | ENE 9 | E 9 | NE 11 | NE 10 | NE 10 |
 kJ | 20 | 37 | 99 | 120 | 101 | 87 | 68 | 43 | 28 | 27 | 17 | 10 | 26 | 2 | 2 | 15 | 15 | 8 | 7 | 482 | 299 | 4 | 4 | 4 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | — | — | S 9 | — | — | — | SE 8 | SE 8 | S 6 | NE 11 | NE 11 | SE 12 | NE 10 |
| kJ | 74 | 74 | 72 | 55 | 55 | 32 | 31 | 31 | 54 | 54 | — | — | — | 7 | — | — | — | 2 | 2 | 7 | 5 | 5 | 6 | 15 |
Swell 3 Height (m) Direction Period (s) | ENE 7 | ENE 7 | E 11 | ENE 8 | NE 11 | NE 11 | NE 11 | — | — | — | — | — | — | — | — | — | — | — | SW 8 | — | SW 7 | S 6 | — | SE 12 |
| kJ | 5 | 5 | 2 | 6 | 5 | 5 | 5 | — | — | — | — | — | — | — | — | — | — | — | 2 | — | 2 | 3 | — | 6 |
Wind waves Height (m) Direction Period (s) | S 5 | S 6 | NNE 5 | NNE 6 | NE 6 | NE 7 | NE 7 | NE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | — | E 9 | E 9 | ESE 9 |
| kJ | 58 | 156 | 18 | 90 | 182 | 233 | 221 | 251 | 311 | 387 | 628 | 897 | 1012 | 919 | 721 | 637 | 566 | 408 | 349 | 304 | — | 257 | 258 | 304 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 207 | 613 | 0 | 52 | 117 | 117 | 117 | 128 | 266 | 266 | 266 | 631 | 591 | 674 | 877 | 923 | 920 | 920 | 1007 | 1007 | 170 | 877 | 159 | 117 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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