Surf Forecasts:
How big are the waves at Choshi today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 10ft (3.0m), 12s period with SE swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 11ft (3.5m), 13s period with SE swell.
- Evening surf: Evening surf (21 Sep, local time) - 13ft (4.0m), 13s period with SE swell.
The current surf forecast for Choshi at 3AM is: 3.5m 12s primary swell from a South-southeast direction and 2.4m 12s secondary swell from a Southeast direction, 0.5m 12s secondary swell from a East direction (forecast issued at 08:00pm September 20). The wind direction is predicted to be cross-onshore and the swell rating is 11.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 10ft (3.0m) | 12s |
| Afternoon (21 Sep) | 11ft (3.5m) | 13s |
| Evening (21 Sep) | 13ft (4.0m) | 13s |
Table - waves today at Choshi. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 128mm), heaviest during Mon night. Warm (max 27°C on Mon morning, min 22°C on Tue night). Winds decreasing (gales from the NNW on Mon night, light winds from the ENE by Wed afternoon). | ||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 22 | ||||||||||||||||
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 |  |  |  |  |  |  |  | |||||||||||
Wave Height (m) Direction Period (s) | SSE 11 | ESE 11 | SE 11 | SSE 12 | SSE 12 | SE 12 | SE 13 | SE 13 | SE 13 | SE 13 | SE 14 | SSE 13 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | ENE 9 |
Wave Graph  | ||||||||||||||||||
 kJ | 1766 | 1326 | 1416 | 2892 | 3568 | 2436 | 2655 | 3371 | 4202 | 5210 | 6249 | 3070 | 592 | 378 | 307 | 216 | 161 | 276 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | on | on | on | on | on | cross-on | cross | cross-off | off | cross-off | cross-off | cross | cross | cross |
High Tide | 7:53PM1.25m | 3:00PM1.24m | 10:29PM1.19m | 3:02PM1.29m | ||||||||||||||
Low Tide | 6:09AM0.58m | 7:22PM1.16m | 7:19AM0.52m | 8:01PM1.06m | ||||||||||||||
 |  |  | |  | | | |  | |  | |  |  | | |  | | |
 | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — |
 | — | — | — | — | — | — | — | 5:36 | — | — | — | — | — | — | — | 5:35 | — | — |
mm | 10 | 2 | 4 | 8 | 12 | 12 | 8 | 3 | 4 | 3 | 31 | 39 | 2 | — | — | — | — | — |
Temp °C | 23 | 24 | 24 | 25 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 24 | 24 | 24 | 23 | 23 | 23 | 23 |
Feels °C | 25 | 24 | 25 | 28 | 27 | 25 | 27 | 26 | 26 | 23 | 21 | 16 | 21 | 22 | 22 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | ESE 11 | SE 11 | SE 12 | SE 12 | ENE 11 | E 10 | E 15 | — | — | SE 14 | SSE 13 | ESE 10 | SSE 10 | SSE 10 | NE 9 | SSE 9 | SSE 8 |
| kJ | 1766 | 1326 | 1416 | 1551 | 1978 | 191 | 164 | 4 | — | — | 6249 | 3070 | 551 | 378 | 307 | 300 | 161 | 108 |
Swell 2 Height (m) Direction Period (s) | E 12 | E 12 | E 12 | E 12 | E 11 | — | E 15 | — | — | — | — | E 10 | SSE 11 | E 9 | NE 8 | SSE 9 | — | — |
| kJ | 74 | 47 | 46 | 67 | 39 | — | 4 | — | — | — | — | 893 | 592 | 198 | 196 | 216 | — | — |
Swell 3 Height (m) Direction Period (s) | NE 8 | — | — | — | — | — | — | — | — | — | — | — | NE 6 | NE 7 | E 9 | ENE 10 | ENE 10 | — |
| kJ | 24 | — | — | — | — | — | — | — | — | — | — | — | 78 | 121 | 57 | 31 | 18 | — |
Wind waves Height (m) Direction Period (s) | ESE 11 | — | — | SSE 12 | SSE 12 | SE 12 | SE 13 | SE 13 | SE 13 | SE 13 | — | N 5 | N 7 | — | — | — | NE 9 | ENE 9 |
| kJ | 1409 | — | — | 2892 | 3568 | 2436 | 2655 | 3371 | 4202 | 5210 | — | 149 | 289 | — | — | — | 307 | 276 |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 674 | 674 | 125 | 117 | 687 | 122 | 632 | 627 | 631 | 627 | 609 | 123 | 37 | 83 | 147 | 644 | 307 | 121 |
Best forecast wave conditions in Chiba | ||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||
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