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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Thursday 16 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
15.9° C
(Which is 2.3°C colder than average for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 6AM is: 2.2m 14s primary swell from a Southeast direction and 0.9m 17s secondary swell from a South-southeast direction (forecast issued at 02:00am April 16). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Apr) | 6ft (1.9m) | 16s |
| Afternoon (16 Apr) | 4.5ft (1.3m) | 16s |
| Evening (16 Apr) | 11ft (3.5m) | 9s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 16 | Friday 17 | Saturday 18 | ||||||||||||||||||||||
| 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 | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 14 | 16 | 16 | 16 | 15 | 9 | 15 | 16 | 15 | 15 | 15 | 14 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1319 | 1435 | 1902 | 1750 | 848 | 813 | 1432 | 1671 | 1358 | 1531 | 1472 | 1396 | 1220 | 886 | 1652 | 2244 | 2521 | 2675 | 2940 | 2716 | 2649 | 2379 | 2483 | 2479 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | 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 | cross- on | cross- on | glass | on | on | on | on | glass |
High Tide / height (m) | 3:28AM 1.33 | 3:59PM 1.37 | 3:54AM 1.38 | 4:48PM 1.42 | 4:21AM 1.42 | 5:37PM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 9:22PM 0.32 | 9:43AM 0.19 | 10:00PM 0.38 | 10:19AM 0.01 | 10:37PM 0.47 | 10:56AM -0.12 | ||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | ||||||||||||||||||||||
| Sunrise | - | - | 5:07 | - | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:10 | - | - | - | - | - | - | - | 6:12 | - | - | - | - | - | - | - | 6:13 | - |
 |  |  | |  | | |  | |  | | | | | | | | | | | | | | | |
Rain (mm) | 12 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 15 | 15 | 16 | 18 | 16 | 13 | 11 | 10 | 10 | 10 | 11 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 16 | 17 | 17 | 16 | 16 |
| Feels °C (?) | 16 | 11 | 11 | 11 | 12 | 9 | 4 | 3 | 1 | 4 | 4 | 5 | 8 | 8 | 10 | 10 | 11 | 12 | 12 | 15 | 16 | 15 | 15 | 16 |
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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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