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Surf Forecasts:

Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 8 am 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
19.4° C
 (Which is slightly warmer than usual)

How big are the waves at Amatu today?

The current surf forecast for Amatu at 4PM is: 0.5m 9s primary swell from a East direction and 0.7m 6s secondary swell from a Southeast direction (forecast issued at 08:00am April 23). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (23 Apr)2ft (0.6m)10s
Afternoon (23 Apr)1.5ft (0.5m)9s
Evening (23 Apr)3.5ft (1.1m)5s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Heavy rain (total 31mm), heaviest during Thu night. Very mild (max 18°C on Thu morning, min 12°C on Thu night). Mainly fresh winds.

Thursday
23
Friday
24
Saturday
25
Sun
26
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)
2
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
1
0
1
1
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)
1
SE
6
0.6
E
10
0.9
SE
6
0.4
SE
12
0.5
E
10
1.1
E
5
0.9
ESE
5
0.9
ESE
6
1.6
NE
6
1.7
NE
7
1.7
NE
7
1.4
NE
7
1.3
ENE
7
1.3
ENE
7
1.4
ENE
8
1.4
ENE
8
1.5
ENE
8
1.5
ENE
7
1.4
ENE
7
1.3
E
6
1.3
E
6
1.2
E
6
1.2
E
6
1.2
E
6
Wave Graph
Metric surfscale
Energy kJ
83
70
59
45
47
64
44
54
182
263
263
194
151
172
204
210
234
222
180
143
140
112
109
105
Wind (km/h)
5
W
10
WSW
5
SE
10
ESE
15
ENE
25
NNE
35
NNE
35
NNE
30
NNE
25
NNE
30
NE
25
ENE
20
ENE
20
ENE
20
NE
20
NE
20
NE
25
ENE
25
ENE
20
ENE
15
E
15
E
10
E
10
ENE
Wind State
cross-off
cross
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-on
cross
cross
High Tide
7:03AM1.30m
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
cloud
light rain
light rain
light rain
mod rain
heavy rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:58
—
—
—
—
—
—
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
 mm
—
1
1
3
6
13
4
2
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
17
18
18
14
13
13
13
13
12
13
15
14
14
14
14
13
13
14
14
14
14
13
13
13
Feels °C
17
17
18
13
11
9
6
7
6
8
9
8
9
10
9
8
8
8
8
9
10
10
11
11
Swell 1
Height (m)
Direction
Period (s)
1
SE
6
0.9
SE
6
0.9
SE
6
0.7
SE
6
0.5
E
10
0.5
E
9
0.9
ESE
5
0.9
ESE
6
0.6
S
8
0.7
S
9
0.8
S
9
0.9
S
9
0.8
S
9
0.8
SSW
8
0.7
SSW
8
0.5
S
8
0.5
S
7
0.4
S
7
0.5
NE
13
0.5
NE
13
0.5
NE
13
0.4
NE
12
1.2
E
6
0.9
ENE
7
Energy kJ
83
70
59
40
46
42
44
54
42
74
94
119
94
94
70
28
26
16
84
83
80
53
109
84
Swell 2
Height (m)
Direction
Period (s)
0.6
E
10
0.6
E
10
0.5
E
10
0.5
E
9
0.3
SE
12
0.3
SE
12
0.5
E
9
0.4
E
9
0.4
E
9
0.6
SSW
8
0.6
SW
8
0.4
E
9
0.4
E
9
0.3
NE
15
0.4
NE
15
0.4
SW
8
0.4
NE
14
0.5
NE
13
0.3
S
7
0.3
S
7
0.2
ENE
16
0.2
ENE
16
0.4
NE
12
0.7
SE
6
Energy kJ
68
67
46
45
23
22
42
27
28
43
44
23
25
34
56
24
70
88
8
8
26
25
37
33
Swell 3
Height (m)
Direction
Period (s)
0.4
NE
14
0.3
SE
13
0.3
SE
12
0.4
SE
12
0.2
ENE
13
0.2
ENE
13
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.4
E
9
0.4
E
9
0.4
SW
8
0.4
SW
8
0.2
ESE
12
0.2
ESE
12
0.4
NE
14
0.4
SW
8
0.3
SW
8
0.3
SW
8
0.3
SW
8
0.1
SW
8
0.1
SE
11
0.4
NE
15
0.4
ENE
15
Energy kJ
50
26
25
39
17
16
22
22
22
27
24
18
18
14
14
52
24
11
11
10
2
5
57
87
Wind waves
Height (m)
Direction
Period (s)
—
—
—
—
0.8
ESE
6
1.1
E
5
1
NE
4
1
NNE
5
1.6
NE
6
1.7
NE
7
1.7
NE
7
1.4
NE
7
1.3
ENE
7
1.3
ENE
7
1.4
ENE
8
1.4
ENE
8
1.5
ENE
8
1.5
ENE
7
1.4
ENE
7
1.3
E
6
1.3
E
6
1.2
E
6
—
1.2
E
6
Energy kJ
—
—
—
—
47
64
33
46
182
263
263
194
151
172
204
210
234
222
180
143
140
112
—
105
Nearest Offshore or Glassy
Amatu
Chiba
Big Ben
Chiba
Ohara
Chiba
Ohara
Chiba
Onjuku
Chiba
Katagai
Chiba
Tainohama
Shikoku
Suruga Bay
Shizuoka
Suruga Bay
Shizuoka
Omaezaki
Shizuoka
Uchiboso
Chiba
zushi Marina
Kanagawa
Omaezaki
Shizuoka
Niyodo Rivermouth
Shikoku
Uchiboso
Chiba
Tainohama
Shikoku
Omaezaki
Shizuoka
Nunoshima
Shikoku
Gomoda
Shikoku
Nunoshima
Shikoku
Kodogawa
Kyu Shu
Shida
Chiba
Uchiboso
Chiba
Onjuku
Chiba
Rating
(10 max)
2
1
1
1
1
1
2
1
1
2
1
1
2
1
1
1
1
1
1
2
4
2
1
2
Distance (km)
0
6
24
24
16
52
538
184
184
190
35
60
190
622
35
538
190
537
519
537
842
30
35
16
Best forecast wave conditions in Chiba
Malibu
Katagai
Mera
Tsurigasaki Surfing Beach (Tokyo 2020)
Uchiboso
Katagai
Mera
Mera
Shida
Uchiboso
Onjuku
Rating
(10 max)
2
1
1
1
1
1
2
1
2
1
2
Best forecast wave conditions in Japan
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Akabane Long Beach
Shizuoka
Akabane Long Beach
Shizuoka
Akabane Long Beach
Shizuoka
Niyodo Rivermouth
Shikoku
Omaezaki
Shizuoka
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Lena
Kyu Shu
Nunoshima
Shikoku
Nagata
Kyu Shu
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Rating
(10 max)
2
3
2
2
3
2
2
2
2
2
2
1
2
1
1
3
2
2
3
2
4
4
4
4
Header Global
Boneyards
South Africa
Sea Vista
South Africa
Fish Boma
South Africa
Fish Boma
South Africa
Fish Boma
South Africa
Lebu
Chile
Bocock's Bay
Namibia
Bocock's Bay
Namibia
Lebu
Chile
Lebu
Chile
Lebu
Chile
Lebu
Chile
Papatowai
New Zealand
Papatowai
New Zealand
Lebu
Chile
Catlins River Mouth
New Zealand
Otago Peninsula - Allans Beach
New Zealand
Lebu
Chile
Luna Park
Australia
Papatowai
New Zealand
Bali Village
Indonesia
Trial Harbour
Australia
Bali Village
Indonesia
Bali Village
Indonesia
Rating
(10 max)
9
9
6
5
5
5
5
5
5
5
5
5
6
9
5
5
4
5
5
7
4
5
4
4
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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