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Surf Forecasts:
Choshi surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Friday 15 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
17.8° 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 10AM is: 1.0m 9s primary swell from a East direction and 0.2m 9s secondary swell from a East-northeast direction (forecast issued at 02:00am May 15). An open ocean swell of 0.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 3.5ft (1.0m) | 9s |
| Afternoon (15 May) | 3.5ft (1.0m) | 9s |
| Evening (15 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 Sat afternoon, min 15°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | ||||||||||||||||||||||
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 | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | E 9 | ESE 9 | ESE 9 | |
184 | 180 | 180 | 175 | 175 | 175 | 168 | 164 | 133 | 130 | 130 | 101 | 103 | 108 | 110 | 110 | 121 | 121 | 135 | 129 | 118 | 158 | 307 | 206 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross-off | cross | cross | cross-on | cross-on | cross-on | on | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | glassy | |
High Tide | 2:01AM1.19m | 3:40PM1.18m | 2:29AM1.25m | 4:34PM1.22m | 3:00AM1.31m | 5:26PM1.23m | ||||||||||||||||||
Low Tide | 8:51AM0.06m | 9:00PM0.68m | 9:33AM-0.10m | 9:41PM0.76m | 10:15AM-0.20m | |||||||||||||||||||
 | |  | |  | | |  | | | | | | | | |  | | | | | | | | |
 | — | 4:31 | — | — | — | — | — | — | — | 4:31 | — | — | — | — | — | — | — | 4:30 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:34 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — | — | 6:35 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 14 | 14 | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 18 | 19 | 19 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 19 | 19 |
11 | 10 | 11 | 12 | 13 | 13 | 15 | 15 | 16 | 16 | 15 | 16 | 18 | 17 | 20 | 19 | 20 | 19 | 19 | 19 | 18 | 17 | 17 | 19 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | E 9 | ESE 9 | ESE 9 |
 kJ | 184 | 180 | 180 | 175 | 175 | 175 | 168 | 164 | 133 | 130 | 130 | 101 | 103 | 108 | 110 | 110 | 121 | 121 | 135 | 129 | 118 | 158 | 307 | 206 |
Swell 2 Height (m) Direction Period (s) | — | NE 9 | NE 9 | ENE 9 | ENE 9 | NE 9 | NE 7 | NE 7 | NE 7 | NE 7 | NE 6 | NE 8 | NE 8 | NE 8 | NE 8 | NE 9 | NE 8 | NE 8 | SE 11 | SE 10 | SE 10 | SE 10 | NE 9 | NE 10 |
| kJ | — | 23 | 3 | 8 | 8 | 3 | 17 | 16 | 15 | 7 | 6 | 17 | 17 | 10 | 17 | 20 | 11 | 11 | 5 | 17 | 24 | 33 | 31 | 24 |
Swell 3 Height (m) Direction Period (s) | — | S 7 | E 16 | E 16 | SE 12 | S 7 | NE 9 | SE 9 | SE 11 | SE 11 | ENE 8 | ESE 11 | ESE 11 | SE 11 | SE 11 | SE 11 | SE 11 | SE 11 | NE 9 | SE 10 | NE 9 | ENE 9 | ENE 9 | ENE 9 |
| kJ | — | 1 | 5 | 5 | 21 | 1 | 13 | 37 | 5 | 5 | 7 | 12 | 12 | 5 | 5 | 5 | 5 | 5 | 3 | 38 | 29 | 16 | 16 | 8 |
Wind waves Height (m) Direction Period (s) | NE 5 | NE 5 | NE 5 | NE 6 | NE 7 | NE 7 | — | — | — | — | NNE 6 | NNE 6 | — | — | — | — | — | — | — | — | — | — | ESE 9 | — |
| kJ | 55 | 45 | 32 | 31 | 30 | 30 | — | — | — | — | 15 | 15 | — | — | — | — | — | — | — | — | — | — | 211 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 125 | 125 | 125 | 125 | 125 | 112 | 170 | 71 | 37 | 0 | 57 | 86 | 71 | 112 | 71 | 37 | 0 | 0 | 0 | 0 | 56 | 112 | 207 | 0 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
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