Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 am Sunday 26 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
20.0° 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 12PM is: 0.6m 14s primary swell from a Northeast direction and 0.7m 7s secondary swell from a East-northeast direction, 0.7m 6s secondary swell from a Southeast direction (forecast issued at 08:00am April 26). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (26 Apr)2ft (0.6m)14s
Afternoon (26 Apr)1.5ft (0.5m)14s
Evening (26 Apr)1.5ft (0.5m)13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 37mm), heaviest during Sun night. Warm (max 20°C on Tue afternoon, min 14°C on Mon afternoon). Winds increasing (calm on Mon night, fresh winds from the SW by Tue night).

Sunday
26
Monday
27
Tuesday
28
Wed
29
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
Rating
(10 max)
1
0
0
0
0
0
0
0
0
2
2
1
1
1
1
0
0
0
0
0
0
0
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
0.6
NE
14
0.6
NE
14
0.6
NE
14
0.5
NE
14
0.5
NE
13
0.5
NE
13
1.1
SE
6
1.2
ESE
6
1.4
SE
6
1.7
SE
7
1.6
SE
7
1.1
ESE
7
1
S
7
1
S
7
0.9
SSW
7
0.7
ESE
8
0.7
SSW
7
0.6
SSW
7
0.6
ESE
8
0.6
ESE
8
1.2
SW
5
1.6
SW
6
1.8
SW
6
1.7
SW
6
Wave Graph
Metric surfscale
Energy kJ
169
164
158
91
87
84
85
103
139
263
207
117
97
103
74
50
44
43
44
45
65
160
236
231
Wind (km/h)
10
ENE
10
E
15
ESE
15
ESE
10
SE
10
ESE
15
E
15
E
15
E
10
N
20
NNW
30
NNW
15
NNE
5
ENE
5
SE
5
SSE
15
SSE
20
SSE
25
S
30
SSW
35
SW
35
SW
35
WSW
20
WSW
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
off
off
off
cross-off
glassy
glassy
on
on
on
cross-on
cross-on
cross-on
cross
cross
cross
High Tide
12:12PM1.03m
1:55AM1.17m
1:47PM1.10m
2:24AM1.24m
2:49PM1.18m
2:50AM1.29m
Low Tide
7:12AM0.83m
6:57PM0.42m
8:07AM0.65m
7:56PM0.45m
8:46AM0.48m
8:42PM0.49m
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
heavy rain
mod rain
light rain
light rain
cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:54
4:52
4:52
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:20
6:21
6:22
4
20
10
2
1
Temp °C
15
17
17
18
17
17
17
17
17
17
15
15
14
14
14
14
16
18
19
20
18
18
19
18
13
14
14
15
15
16
16
16
17
17
12
10
12
14
14
13
14
14
16
16
13
13
15
16
Swell 1
Height (m)
Direction
Period (s)
0.9
ENE
6
0.8
ENE
7
0.7
ENE
7
0.6
ENE
7
0.9
ESE
6
1
ESE
6
1.1
SE
6
1.2
ESE
6
1.4
SE
6
1.7
SE
7
1.6
SE
7
1.1
ESE
7
1
S
7
1
S
7
0.9
SSW
7
0.6
SSW
7
0.7
SSW
7
0.6
SSW
7
0.6
ESE
8
0.6
ESE
8
0.6
E
8
0.5
E
9
0.4
E
9
0.4
E
9
Energy kJ
68
62
47
42
63
75
85
103
139
263
207
117
97
103
74
37
44
37
44
45
41
40
25
25
Swell 2
Height (m)
Direction
Period (s)
0.6
NE
14
0.7
SE
6
0.6
NE
14
0.5
NE
14
0.5
NE
13
0.5
NE
13
0.5
NE
13
0.5
NE
13
0.4
NE
13
0.4
NE
12
0.4
NE
12
1
S
7
0.9
ESE
7
0.7
SE
7
0.7
ESE
7
0.7
ESE
8
0.5
ESE
7
0.6
ESE
7
0.5
NE
7
0.5
NE
7
0.5
NE
7
0.4
SSE
7
0.3
SSE
7
0.3
NE
7
Energy kJ
169
33
158
91
87
84
83
83
59
55
37
94
84
56
48
50
31
43
26
27
27
17
9
8
Swell 3
Height (m)
Direction
Period (s)
0.6
SSE
6
0.6
NE
14
0.1
SE
11
0.1
SE
13
0.4
ENE
8
0.2
ENE
9
0.2
ENE
8
0.4
NE
8
0.4
NE
8
0.2
ENE
8
0.2
ENE
8
0.4
NE
12
0.4
NE
8
0.4
ENE
7
0.6
NE
7
0.6
ENE
8
0.6
ENE
8
0.5
NE
8
0.1
NE
11
0.4
SE
7
0.4
SSE
7
0.4
NE
7
0.4
NE
7
0.1
SE
11
Energy kJ
22
164
5
7
24
7
7
15
15
7
6
36
16
18
30
40
40
28
5
13
18
14
14
5
Wind waves
Height (m)
Direction
Period (s)
0.7
SE
6
0.9
SE
6
1.3
SW
5
0.6
WNW
3
0.3
NW
3
0.3
N
3
0.4
NE
3
0.6
S
7
0.8
SSW
4
1.2
SW
5
1.6
SW
6
1.8
SW
6
1.7
SW
6
Energy kJ
33
51
80
8
2
1
2
33
20
65
160
236
231
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
2
2
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
16
24
35
24
24
24
24
35
40
0
0
96
0
0
0
24
24
24
24
2114
849
622
73
30
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
1
1
2
2
1
1
1
2
2
1
2
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
3
1
3
3
3
3
2
2
2
2
1
3
2
1
1
1
2
1
1
1
1
1
Header Global
Rating
(10 max)
6
7
5
7
6
6
7
7
9
9
8
7
5
6
6
6
5
6
5
5
5
5
5
7
  • 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

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