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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 8 am Tuesday 31 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
15.5° C
(Which is 1.8°C colder than average for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 4PM is: 4.0m 9s primary swell from a South direction and 0.4m 10s secondary swell from a East-northeast direction, 0.1m 9s secondary swell from a East direction (forecast issued at 08:00am March 31). The wind direction is predicted to be cross-onshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Mar) | 6.5ft (2.0m) | 6s |
| Afternoon (31 Mar) | 11ft (3.5m) | 8s |
| Evening (31 Mar) | 15ft (4.5m) | 10s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 31 | Wednesday 01 | Thursday 02 | Fri 03 | |||||||||||||||||||||
| 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) (?) | 5 | 6 | 7 | 8 | 9 | 10 | 10 | 10 | 9 | 11 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 98 | 305 | 763 | 1929 | 3056 | 3773 | 3202 | 1065 | 691 | 338 | 361 | 273 | 226 | 181 | 157 | 121 | 231 | 355 | 277 | 467 | 181 | 247 | 123 | 277 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross | cross | cross- on | off | off | off | off | cross- off | cross- off | cross | cross | glass | glass |
High Tide / height (m) | 3:49AM 1.26 | 3:43PM 1.31 | 4:10AM 1.31 | 4:26PM 1.35 | 4:31AM 1.34 | 5:05PM 1.36 | ||||||||||||||||||
Low Tide / height (m) | 9:47AM 0.45 | 9:58PM 0.26 | 10:17AM 0.31 | 10:30PM 0.31 | 10:46AM 0.19 | 10:59PM 0.38 | ||||||||||||||||||
Tuesday 31 | Wednesday 01 | Thursday 02 | Fri 03 | |||||||||||||||||||||
| Sunrise | 5:28 | - | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - | - | 5:26 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 5:59 | - | - | - | - | - | - | - | 5:59 | - | - | - | - | - | - | - | - | 6:00 | - | - | - |
 |  | | |  | |  |  |  |  | | |  | |  | | | | | | |  | | | |
Rain (mm) | - | 1 | 4 | 5 | 2 | 2 | - | - | - | - | - | 1 | 6 | 6 | 14 | 15 | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 17 | 15 | 17 | 18 | 19 | 18 | 16 | 14 | 14 | 14 | 13 | 13 | 15 | 14 | 12 | 11 | 10 | 10 | 10 | 10 | 11 | 11 | 10 |
| Feels °C (?) | 12 | 10 | 8 | 8 | 9 | 12 | 13 | 12 | 14 | 8 | 8 | 7 | 9 | 14 | 13 | 6 | 5 | 5 | 6 | 8 | 8 | 9 | 10 | 8 |
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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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