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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Wednesday 15 Apr 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
15.5° C
(Which is 2.7°C colder than average for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 5PM is: 1.9m 15s primary swell from a South-southeast direction and 0.1m 15s secondary swell from a East direction (forecast issued at 08:00am April 15). The wind direction is predicted to be onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Apr) | 3.5ft (1.1m) | 16s |
| Afternoon (15 Apr) | 5.5ft (1.7m) | 16s |
| Evening (15 Apr) | 6ft (1.8m) | 15s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||||||||
| 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 17 | 16 | 16 | 16 | 15 | 15 | 14 | 14 | 14 | 16 | 16 | 14 | 15 | 9 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 464 | 635 | 1230 | 1307 | 1785 | 1356 | 1319 | 2114 | 1028 | 1750 | 803 | 733 | 1292 | 1747 | 1376 | 1376 | 1472 | 1396 | 1377 | 1396 | 1631 | 1631 | 1798 | 1931 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- on | cross- on | on | 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- off | cross | cross | cross- on | on | on |
High Tide / height (m) | 3:05AM 1.27 | 3:10PM 1.28 | 3:28AM 1.33 | 3:59PM 1.37 | 3:54AM 1.38 | 4:48PM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 9:10AM 0.37 | 9:22PM 0.32 | 9:43AM 0.19 | 10:00PM 0.38 | 10:19AM 0.01 | 10:37PM 0.47 | ||||||||||||||||||
Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | |||||||||||||||||||||
| Sunrise | 5:07 | - | - | - | - | - | - | - | 5:07 | - | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:10 | - | - | - | - | - | - | - | 6:10 | - | - | - | - | - | - | - | 6:12 | - | - | - |
 |  |  | |  |  | | | | | | | |  | | | | | | | |  | | | |
Rain (mm) | - | - | - | - | 3 | 5 | 5 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 18 | 19 | 20 | 17 | 16 | 16 | 16 | 15 | 16 | 17 | 15 | 12 | 11 | 10 | 10 | 9 | 12 | 13 | 13 | 13 | 13 | 14 | 14 |
| Feels °C (?) | 15 | 16 | 17 | 19 | 17 | 16 | 15 | 13 | 11 | 11 | 10 | 7 | 3 | 3 | 3 | 3 | 2 | 6 | 8 | 9 | 10 | 11 | 12 | 12 |
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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.
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