Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Thursday 23 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
19.5° C
(Which is slightly warmer than usual)

How big are the waves at Amatu today?

The current surf forecast for Amatu at 9PM is: 0.5m 9s primary swell from a East direction and 0.6m 6s secondary swell from a Southeast direction, 0.6m 3s secondary swell from a East-northeast direction (forecast issued at 02:00pm April 23). The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (23 Apr)--
Afternoon (23 Apr)2.5ft (0.8m)6s
Evening (23 Apr)1.5ft (0.5m)9s

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 27mm), heaviest during Thu night. Very mild (max 17°C on Sun morning, min 12°C on Thu night). Mainly fresh winds.

Thu
23
Friday
24
Saturday
25
Sun
26
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
6 AM
9 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
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)
0.9
SE
6
0.8
SE
6
0.5
E
9
0.5
E
9
0.5
E
9
1
E
6
1
E
6
1.1
S
8
1.4
NE
7
1.4
ENE
6
1.3
ENE
6
1.2
ENE
7
1.3
ENE
7
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.3
E
7
1.3
E
7
1.2
E
7
1.2
E
7
1.2
E
6
1.2
E
6
0.6
NE
14
0.6
NE
14
Wave Graph
Metric surfscale
Energy kJ
59
47
45
42
42
66
74
165
173
160
132
156
163
188
198
186
152
148
128
131
119
113
169
164
Wind (km/h)
5
SSW
10
SE
15
E
20
NNE
30
NE
30
NNE
30
NNE
30
NNE
30
NE
25
ENE
20
ENE
20
NE
20
NE
25
NE
20
NE
25
NE
20
ENE
20
ENE
15
ENE
15
E
10
E
10
ENE
10
ENE
15
E
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross-on
High Tide
10:56PM1.07m
7:53AM1.18m
00:24AM1.08m
9:39AM1.06m
1:19AM1.12m
Low Tide
2:59PM0.11m
2:36AM0.98m
4:13PM0.25m
4:58AM0.96m
5:39PM0.36m
7:12AM0.83m
light rain
light rain
light rain
heavy rain
mod rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:16
6:17
6:19
6:19
1
1
5
12
7
1
1
Temp °C
19
15
13
13
14
13
12
14
16
15
14
14
14
13
13
14
15
15
14
14
14
13
14
16
19
13
11
10
9
8
6
9
10
10
10
10
10
8
8
8
10
10
10
11
11
10
12
12
Swell 1
Height (m)
Direction
Period (s)
0.9
SE
6
0.8
SE
6
0.7
SE
6
0.6
SE
6
0.8
ESE
5
1
E
6
1
E
6
1.1
S
8
1
S
8
0.9
S
8
0.8
S
8
0.8
S
8
0.7
S
8
0.6
S
8
0.6
S
8
0.5
S
7
0.5
NE
13
0.5
NE
13
0.5
NE
13
0.5
NE
12
0.4
ENE
16
1.2
E
6
0.9
ENE
7
0.7
SE
6
Energy kJ
59
47
38
28
37
66
74
165
144
113
88
86
61
41
40
26
84
83
80
73
95
113
73
33
Swell 2
Height (m)
Direction
Period (s)
0.5
E
10
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.4
E
9
0.6
S
8
0.8
E
7
0.6
E
7
0.4
E
8
0.4
SW
9
0.4
SW
9
0.4
SW
8
0.4
SW
8
0.4
NE
14
0.5
NE
13
0.5
S
7
0.4
S
7
0.3
S
7
0.2
ENE
16
0.4
NE
12
0.4
ENE
15
0.6
SE
6
0.6
NE
14
Energy kJ
46
45
45
42
42
28
41
56
34
23
19
19
24
25
51
88
25
15
8
25
36
87
26
164
Swell 3
Height (m)
Direction
Period (s)
0.3
SE
12
0.4
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.4
E
9
0.4
E
9
0.3
SE
12
0.4
SW
9
0.2
ESE
12
0.3
NE
15
0.4
NE
15
0.4
NE
14
0.4
SW
8
0.3
SW
8
0.3
SW
8
0.2
WSW
8
0.2
ENE
16
0.2
S
6
0.1
SE
11
0.4
NE
12
0.6
NE
14
0.1
SE
11
Energy kJ
25
39
23
22
22
22
28
27
22
19
14
34
56
52
24
11
10
6
26
3
5
35
169
5
Wind waves
Height (m)
Direction
Period (s)
0.6
ENE
3
1
NE
4
1.1
NE
5
1.1
NE
5
1.3
NE
6
1.4
NE
7
1.4
ENE
6
1.3
ENE
6
1.2
ENE
7
1.3
ENE
7
1.4
ENE
7
1.5
ENE
7
1.4
ENE
7
1.3
E
7
1.3
E
7
1.2
E
7
1.2
E
7
1.2
E
6
1.2
E
6
0.8
ENE
7
Energy kJ
9
34
51
62
132
173
160
132
156
163
188
198
186
152
148
128
131
119
105
62
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
3
1
1
1
1
1
1
1
1
1
1
2
1
1
2
2
1
1
1
2
Distance (km)
6
24
24
52
279
184
96
69
35
87
87
35
35
190
538
190
40
87
842
30
35
35
190
30
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
1
1
2
2
2
1
2
1
1
2
Best forecast wave conditions in Japan
Rating
(10 max)
3
3
3
3
3
2
2
2
2
2
1
2
2
2
3
3
3
3
4
4
4
4
4
4
Header Global
Rating
(10 max)
6
6
5
5
5
5
5
5
5
5
6
5
5
5
4
5
5
4
4
5
4
4
5
4
  • 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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