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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 pm Saturday 21 Mar 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
15.4° C
(Which is 1.6°C colder than average for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 7PM is: 0.9m 13s primary swell from a East-northeast direction and 0.1m 16s secondary swell from a Southeast direction, 0.4m 6s secondary swell from a Southwest direction (forecast issued at 02:00pm March 21). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | - | - |
| Afternoon (21 Mar) | 3.5ft (1.1m) | 13s |
| Evening (21 Mar) | 3ft (0.9m) | 12s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| 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 | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 317 | 402 | 307 | 245 | 172 | 167 | 164 | 125 | 123 | 123 | 78 | 78 | 75 | 73 | 80 | 137 | 293 | 365 | 345 | 373 | 443 | 454 | 380 | 342 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross | cross- on | cross- on | on | cross- on | cross- on | cross | cross | cross- on | cross | cross- on | cross | cross | cross | cross | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 6:22PM 1.39 | 6:00AM 1.40 | 7:12PM 1.30 | 6:25AM 1.39 | 8:07PM 1.18 | 6:50AM 1.36 | ||||||||||||||||||
Low Tide / height (m) | 11:56AM 0.01 | 12:11AM 0.44 | 12:35PM -0.04 | 12:40AM 0.59 | 1:17PM -0.03 | 1:07AM 0.73 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:39 | - | - | - | - | - | - | - | 5:37 | - |
| Sunset | - | 5:50 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - |
 | |  |  | |  | | |  | |  | | | | |  | |  |  | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - | 2 | 4 | 9 | 6 | - | - | - | - | - |
| Temp. °C | 12 | 12 | 11 | 12 | 13 | 12 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 12 | 12 | 11 | 11 | 10 | 11 | 11 | 10 | 10 | 9 | 11 |
| Feels °C (?) | 7 | 7 | 7 | 7 | 9 | 8 | 10 | 10 | 7 | 9 | 9 | 10 | 10 | 8 | 10 | 9 | 9 | 8 | 9 | 8 | 6 | 5 | 4 | 6 |
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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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