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Surf Forecasts:
Amatu surfForecast / Chiba / Japan
48hr Weather and Surf, issued 2 am Sunday 19 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
16.8° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Amatu today?
The current surf forecast for Amatu at 10AM is: 2.4m 14s primary swell from a South-southeast direction and 0.9m 10s secondary swell from a East-northeast direction (forecast issued at 02:00am April 19). The wind direction is predicted to be cross-shore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Apr) | 8ft (2.4m) | 14s |
| Afternoon (19 Apr) | 8ft (2.5m) | 14s |
| Evening (19 Apr) | 10ft (3.0m) | 15s |
Table - waves today at Amatu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 19 | Monday 20 | Tuesday 21 | ||||||||||||||||||||||
| 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) (?) | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2349 | 2243 | 2212 | 2313 | 2457 | 2626 | 3045 | 3320 | 3143 | 2927 | 2357 | 2126 | 1982 | 1583 | 1403 | 1177 | 1064 | 972 | 749 | 891 | 757 | 661 | 649 | 581 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | glass | glass | cross- off | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross- on | cross- on | on | on | on | cross- on | cross- on | cross | off | cross- off | cross- on | cross- on |
High Tide / height (m) | 4:50AM 1.44 | 6:29PM 1.38 | 5:20AM 1.45 | 7:23PM 1.30 | 5:51AM 1.43 | 8:23PM 1.21 | ||||||||||||||||||
Low Tide / height (m) | 11:14PM 0.58 | 11:37AM -0.20 | 11:50PM 0.69 | 12:20PM -0.20 | 12:24AM 0.80 | 1:06PM -0.14 | ||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | ||||||||||||||||||||||
| Sunrise | - | - | 5:03 | - | - | - | - | - | - | - | 5:01 | - | - | - | - | - | - | - | 5:00 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:14 | - | - | - | - | - | - | - | 6:15 | - | - | - | - | - | - | - | 6:15 | - |
 |  |  | | | | |  | | | | |  | | | | | | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 16 | 15 | 18 | 19 | 19 | 17 | 17 | 16 | 16 | 15 | 17 | 18 | 18 | 17 | 16 | 16 | 16 | 17 | 19 | 17 | 20 | 16 | 17 |
| Feels °C (?) | 16 | 17 | 15 | 17 | 17 | 17 | 16 | 17 | 16 | 15 | 13 | 14 | 16 | 15 | 15 | 14 | 14 | 14 | 15 | 16 | 14 | 16 | 13 | 14 |
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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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