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Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm 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 10PM is: 0.8m 8s primary swell from a South-southeast direction and 0.5m 10s secondary swell from a East direction (forecast issued at 02:00pm May 21). An open ocean swell of 1.4m 6s 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) | - | - |
| Afternoon (21 May) | 3ft (0.9m) | 7s |
| 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 21mm), heaviest during Thu afternoon. Very mild (max 19°C on Sat night, min 15°C on Fri afternoon). Winds decreasing (near gales from the NNE on Fri morning, light winds from the E by Sat afternoon). | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 7 | SSE 7 | SSE 8 | SSE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | SSE 7 | SSE 7 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | |
82 | 97 | 96 | 87 | 199 | 175 | 243 | 384 | 18 | 10 | 1009 | 975 | 840 | 747 | 637 | 493 | 413 | 637 | 364 | 320 | 473 | 327 | 332 | 326 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | on | on | on | cross-on | cross-on | |
High Tide | 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 | 4:03AM0.79m | ||||||||||||||||||
 |  | |  | | | | | | |  | |  | | | |  | | | | | | | | |
 | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — | — | — | — | — | — | 4:26 | — | — |
 | — | — | 6:37 | — | — | — | — | — | — | — | 6:38 | — | — | — | — | — | — | — | 6:39 | — | — | — | — | 6:40 |
3 | 7 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | 1 | 1 | |
Temp °C | 18 | 17 | 17 | 17 | 17 | 18 | 18 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 17 | 17 | 18 | 19 | 19 | 19 | 18 | 19 |
17 | 13 | 11 | 13 | 12 | 13 | 13 | 10 | 7 | 6 | 7 | 7 | 8 | 9 | 10 | 11 | 13 | 13 | 15 | 17 | 16 | 16 | 15 | 17 | |
Swell 1 Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | S 7 | SSE 7 | SSE 7 | SSE 7 | SSW 7 | S 7 | S 7 | S 7 | S 7 | S 7 | ENE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 |
 kJ | 82 | 97 | 96 | 87 | 67 | 47 | 31 | 27 | 18 | 10 | 9 | 16 | 15 | 15 | 16 | 15 | 8 | 637 | 364 | 320 | 473 | 327 | 332 | 326 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | ESE 10 | E 10 | E 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | — | — | — | S 9 | S 9 | SW 8 | SW 8 | SSW 7 | — | S 7 | S 7 | S 6 | NE 10 | NE 10 | NE 10 | NE 10 |
| kJ | 54 | 55 | 49 | 49 | 71 | 30 | 52 | 52 | — | — | — | 7 | 7 | 9 | 9 | 5 | — | 8 | 8 | 7 | 16 | 15 | 15 | 14 |
Swell 3 Height (m) Direction Period (s) | E 11 | NE 11 | NE 11 | NE 11 | — | — | — | — | — | — | — | — | — | SSW 10 | — | SE 8 | — | — | — | — | SE 12 | SE 12 | — | — |
| kJ | 2 | 5 | 5 | 5 | — | — | — | — | — | — | — | — | — | 9 | — | 2 | — | — | — | — | 6 | 6 | — | — |
Wind waves Height (m) Direction Period (s) | NNE 5 | NNE 6 | NE 6 | NE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | NE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | — | — | E 9 | SE 6 | SE 5 | SE 6 |
| kJ | 34 | 107 | 157 | 166 | 199 | 175 | 243 | 384 | 611 | 976 | 1009 | 975 | 840 | 747 | 637 | 493 | 413 | 363 | — | — | 318 | 37 | 45 | 72 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 37 | 57 | 125 | 71 | 117 | 86 | 266 | 266 | 266 | 266 | 266 | 266 | 674 | 674 | 674 | 920 | 920 | 916 | 170 | 56 | 121 | 159 | 121 | 159 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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