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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Saturday 23 May 2026 JSTForecast update in hr min s Forecast update imminent
Amatu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Amatu sea temperature is
21.5° C
(Which is slightly warmer than usual)How big are the waves at Amatu today?
The current surf forecast for Amatu at 9AM is: 2.4m 9s primary swell from a East-northeast direction and 0.3m 7s secondary swell from a South direction, 0.3m 8s secondary swell from a Southwest direction (forecast issued at 02:00am May 23). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 May) | 8ft (2.4m) | 9s |
| Afternoon (23 May) | 7ft (2.1m) | 9s |
| Evening (23 May) | 6.5ft (2.0m) | 9s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Sat night. Warm (max 22°C on Mon morning, min 15°C on Sat morning). Winds decreasing (fresh winds from the NE on Sat morning, calm by Mon night). | ||||||||||||||||||||||||
Saturday 23 | Sunday 24 | Monday 25 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | SE 8 | ENE 11 | ENE 11 | ENE 11 | |
1093 | 1044 | 1363 | 1027 | 923 | 736 | 826 | 705 | 694 | 632 | 414 | 405 | 347 | 289 | 289 | 238 | 366 | 344 | 360 | 469 | 292 | 343 | 286 | 303 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | |
High Tide | 10:17PM1.20m | 8:25AM1.17m | 11:09PM1.19m | 10:06AM1.06m | 11:57PM1.21m | 12:05PM1.03m | ||||||||||||||||||
Low Tide | 3:17AM0.93m | 3:49PM0.35m | 4:59AM0.85m | 4:54PM0.49m | 6:30AM0.72m | 6:00PM0.60m | ||||||||||||||||||
 | |  | | | | | | | |  | |  |  | |  |  | | |  | | | | | |
 | — | 4:30 | — | — | — | — | — | — | — | 4:30 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:42 | — |
— | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | 1 | — | — | — | — | — | — | — | |
Temp °C | 13 | 14 | 13 | 15 | 17 | 18 | 17 | 17 | 18 | 18 | 17 | 19 | 19 | 20 | 19 | 19 | 19 | 19 | 19 | 21 | 22 | 22 | 21 | 20 |
7 | 9 | 8 | 9 | 12 | 14 | 13 | 14 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 19 | 19 | 19 | 19 | 20 | 21 | 21 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SW 8 | ENE 9 | S 7 | SSW 7 | S 7 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | ENE 9 | ENE 9 | ENE 9 | SE 7 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
 kJ | 23 | 15 | 929 | 8 | 9 | 8 | 641 | 568 | 513 | 522 | 414 | 405 | 347 | 289 | 289 | 238 | 218 | 211 | 237 | 244 | 269 | 200 | 204 | 181 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 8 | SW 8 | SE 7 | SW 7 | SSW 7 | SW 7 | S 6 | — | SW 7 | NNE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 11 | ENE 9 | ENE 9 | ENE 10 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 |
| kJ | — | — | 14 | 9 | 2 | 8 | 9 | 2 | 7 | — | 2 | 10 | 10 | 10 | 11 | 12 | 243 | 248 | 271 | 292 | 292 | 343 | 286 | 303 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SW 7 | — | — | SW 7 | SW 7 | — | — | E 16 | ESE 11 | ESE 11 | ESE 11 | ESE 11 | E 16 | S 9 | SW 9 | SSW 8 |
| kJ | — | — | — | — | — | — | — | — | 2 | — | — | 2 | 2 | — | — | 5 | 12 | 12 | 12 | 12 | 5 | 2 | 3 | 13 |
Wind waves Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | SE 6 | SE 6 | SE 6 | SE 6 | SE 7 | SE 7 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | — | — | — | — |
| kJ | 1093 | 1044 | 1363 | 1027 | 923 | 736 | 826 | 705 | 694 | 632 | 49 | 66 | 75 | 116 | 144 | 183 | 366 | 344 | 360 | 469 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 601 | 804 | 846 | 858 | 35 | 35 | 35 | 601 | 35 | 24 | 24 | 35 | 35 | 87 | 24 | 24 | 24 | 35 | 16 | 35 | 35 | 35 | 24 | 24 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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