- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 pm 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 normal for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 5AM is: 1.5m 10s primary swell from a East direction and 0.1m 10s secondary swell from a Northeast direction, 0.9m 6s secondary swell from a Southeast direction (forecast issued at 08:00pm May 23). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (24 May) | 5ft (1.5m) | 10s |
| Afternoon (24 May) | 4.5ft (1.4m) | 9s |
| Evening (24 May) | 4.5ft (1.4m) | 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 2mm), mostly falling on Sun morning. Warm (max 22°C on Mon morning, min 18°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 23 | Sunday 24 | Monday 25 | Tuesday 26 | |||||||||||||||||||||
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 | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | ESE 9 | ENE 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 10 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | |
709 | 632 | 685 | 511 | 405 | 405 | 564 | 340 | 311 | 297 | 326 | 391 | 335 | 408 | 423 | 531 | 540 | 325 | 319 | 313 | 313 | 249 | 198 | 198 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross | cross | cross-on | cross | cross | cross-off | cross-off | cross | cross-on | cross-on | |
High Tide | 11:09PM1.19m | 10:06AM1.06m | 11:57PM1.21m | 12:05PM1.03m | 00:40AM1.24m | 1:39PM1.08m | ||||||||||||||||||
Low Tide | 3:49PM0.35m | 4:59AM0.85m | 4:54PM0.49m | 6:30AM0.72m | 6:00PM0.60m | 7:30AM0.56m | ||||||||||||||||||
 |  |  |  |  |  |  | | | | | |  | | | | | | | | | | | | |
 | — | — | — | 4:30 | — | — | — | — | — | — | — | 4:28 | — | — | — | — | — | — | — | 4:28 | — | — | — | — |
 | 6:40 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | — | 6:42 | — | — | — | — | — | — | 6:43 |
— | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 18 | 18 | 18 | 18 | 19 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 21 | 22 | 22 | 21 | 20 | 20 | 19 | 19 | 21 | 22 | 22 |
13 | 15 | 16 | 16 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 19 | 20 | 21 | 21 | 21 | 21 | 19 | 19 | 20 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | S 7 | E 9 | E 9 | E 10 | E 10 | E 10 | ESE 10 | ENE 9 | E 9 | ENE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
 kJ | 4 | 632 | 563 | 511 | 405 | 405 | 10 | 340 | 311 | 297 | 244 | 244 | 244 | 235 | 226 | 307 | 248 | 254 | 254 | 207 | 212 | 197 | 197 | 197 |
Swell 2 Height (m) Direction Period (s) | SW 7 | SW 7 | — | SW 7 | NE 10 | NNE 10 | ESE 10 | ESE 10 | ESE 11 | SE 7 | ENE 9 | ENE 9 | ENE 10 | ENE 11 | S 9 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 | ENE 11 |
| kJ | 2 | 2 | — | 2 | 4 | 10 | 10 | 10 | 11 | 200 | 326 | 289 | 335 | 408 | 2 | 308 | 387 | 325 | 319 | 313 | 313 | 249 | 198 | 198 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SW 7 | ESE 10 | — | — | — | E 16 | ESE 11 | E 16 | E 16 | E 16 | E 16 | SSW 8 | SSW 8 | S 8 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 |
| kJ | — | — | — | — | 2 | 10 | — | — | — | 5 | 11 | 5 | 5 | 5 | 5 | 14 | 20 | 29 | 29 | 27 | 15 | 15 | 15 | 8 |
Wind waves Height (m) Direction Period (s) | E 9 | — | E 9 | SE 6 | SE 6 | SSE 6 | ESE 9 | SE 7 | SE 7 | — | — | ENE 9 | — | — | ENE 11 | ENE 11 | ENE 11 | — | — | — | — | — | — | — |
| kJ | 709 | — | 685 | 58 | 47 | 65 | 564 | 140 | 168 | — | — | 391 | — | — | 423 | 531 | 540 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 601 | 35 | 601 | 24 | 24 | 30 | 35 | 35 | 35 | 30 | 35 | 16 | 0 | 35 | 35 | 35 | 30 | 35 | 16 | 0 | 0 | 40 | 35 | 35 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Amatu surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest