Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 am Saturday 19 Jul 2025 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
26.6° C
(Which is 1.2°C warmer than normal for this time of year)


How big are the waves at Amatu today?

The current surf forecast for Amatu at 3PM is: 1.3m 10s primary swell from a Southeast direction and 0.4m 6s secondary swell from a Southwest direction (forecast issued at 08:00am July 19). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (19 Jul)4.5ft (1.3m)10s
Afternoon (19 Jul)4.5ft (1.3m)10s
Evening (19 Jul)4.5ft (1.3m)9s

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

Updates in  hr  min  s Forecast update imminent
Saturday
19
Sunday
20
Monday
21
Tue
22
6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM6AM9AM12PM3PM6PM9PM0AM3AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.3
SE
1.3
SE
1.3
SE
1.3
SE
1.3
SE
1.3
SE
1.2
SE
1.2
SE
1.1
SE
1.1
SE
1.1
SE
1.1
SE
1
ESE
1.1
SE
1
ESE
0.9
ESE
0.9
ESE
0.9
ESE
1.1
SE
0.9
ESE
1
ESE
1
ESE
1
ESE
1
ESE
Period(s) (?)101010109999999101010101010101010101099
Wave
Graph
(?)Metric surfscale
Energy (?)318328321308319303298284248239210243209253211185189184248190220214232231
Wind
(km/h)
15
S
15
SSW
15
S
15
SSW
20
SSW
20
SSW
15
SSW
15
SSW
15
SW
15
SSW
20
SSW
20
SSW
20
SSW
20
SSW
20
SSW
15
SW
15
SW
15
SW
20
SSW
20
SSW
20
SSW
20
SSW
20
SSW
15
SW
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-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
12:11PM
1.10
10:29PM
1.36
2:33PM
1.18
11:31PM
1.37
3:49PM
1.29
12:50AM
1.39
Low Tide
/ height (m)
5:10AM
0.49
4:16PM
0.98
6:29AM
0.37
5:47PM
1.12
7:40AM
0.24
7:48PM
1.17
Saturday
19
Sunday
20
Monday
21
Tue
22
Sunrise4:37-------4:37-------4:39-------
Sunset----6:52-------6:51-------6:51---
clearclearclearclearclearclearclearpart cloudpart cloudpart cloudclearclearclearclearclearclearclearclearclearclearclearclearpart cloudpart cloud
Rain (mm)
------------------------
Temp. °C262728282626262525272828262525252527282826262625
Feels °C (?)292930302829292828293029282727272829292928292927
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Chiba

  1. weather stationWind Update The wind is still cross-on at Amatu (light winds from the SSW at Katsuura 11 km from Amatu). A 1.1m swell from the SE

    Amatu
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1 h 7 min ago

13 km/h
SSW
Cross-On
Please reload the page to see if there are any updates.

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