Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 am Tuesday 21 Apr 2026 JST
Forecast 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
18.6° C
(Which is normal for this time of year)

How big are the waves at Amatu today?

The current surf forecast for Amatu at 1PM is: 1.5m 11s primary swell from a East-southeast direction and 1.1m 6s secondary swell from a South-southwest direction, 1.5m 6s secondary swell from a South-southwest direction (forecast issued at 08:00am April 21). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (JST) & DateWave HeightWave Period
Morning (21 Apr)5ft (1.6m)11s
Afternoon (21 Apr)5ft (1.5m)11s
Evening (21 Apr)4ft (1.2m)10s

Table - waves today at Amatu. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent
Tuesday
21
Wednesday
22
Thursday
23
Fri
24
6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM
Rating
(10 max)
0
0
3
0
1
0
0
2
1
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
2.1
SE
1.6
ESE
1.6
ESE
1.5
ESE
1.6
ESE
1.2
ESE
1.2
ESE
1.8
E
1.6
ESE
1.5
ESE
1.4
ESE
1.3
ESE
1.3
ESE
1.3
ESE
0.7
ESE
0.6
E
0.6
E
0.6
E
0.6
E
0.6
E
0.6
E
0.5
E
0.5
E
0.5
E
Period(s) (?)11111111111010101010101010101010101091010999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1035617571499599316310706577442380353302302102707067646565444241
Wind
(km/h)
25
SSW
35
SW
15
WNW
30
ENE
25
E
30
ENE
20
E
15
SE
10
SE
15
S
20
S
20
S
15
S
15
SSW
15
SW
10
SW
10
WSW
10
WSW
20
SW
15
SSW
10
ESE
5
E
15
NE
30
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
off
crosscrosscrosscross-
on
cross-
on
ononcross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscrosscrosscross-
on
cross-
on
cross-
on
glasscross-
off
cross-
off
High Tide
/ height (m)
5:51AM
1.43
8:23PM
1.21
6:25AM
1.38
9:31PM
1.12
7:03AM
1.30
10:56PM
1.07
Low Tide
/ height (m)
1:06PM
-0.14
12:58AM
0.88
1:58PM
-0.03
1:35AM
0.94
2:59PM
0.11
2:36AM
0.98
Tuesday
21
Wednesday
22
Thursday
23
Fri
24
Sunrise5:00-------4:58-------4:58-------
Sunset----6:15-------6:15-------6:16---
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
mod rain
Rain (mm)
-------------------22357
Temp. °C182019171616151515181818181717171718181413131313
Feels °C (?)1516181211910111114131416161517171715111213117
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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