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Surf Forecasts:

Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Wednesday 22 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 10PM is: 1.3m 7s primary swell from a Southeast direction and 0.7m 10s secondary swell from a East direction (forecast issued at 02:00pm April 22). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (22 Apr)--
Afternoon (22 Apr)4.5ft (1.4m)10s
Evening (22 Apr)4ft (1.2m)6s

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 28mm), heaviest during Thu night. Very mild (max 19°C on Thu morning, min 12°C on Thu night). Mainly fresh winds.

Wed
22
Thursday
23
Friday
24
Sat
25
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
1
1
2
0
1
1
0
0
0
0
0
0
0
0
0
1
0
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)
1.4
ESE
10
1.4
ESE
10
0.8
ESE
10
1.2
SE
6
1.3
SE
7
1.1
SE
7
1
SE
7
0.6
E
10
0.9
SE
6
0.4
SE
12
0.5
E
10
0.5
E
9
0.5
E
9
0.4
E
9
1.5
NE
6
1.5
NE
6
1.5
ENE
7
1.5
ENE
7
1.4
ENE
7
1.3
ENE
7
1.2
E
7
1.2
ENE
7
1.2
ENE
7
1.1
E
6
Wave Graph
Metric surfscale
Energy kJ
402
378
131
116
162
114
85
67
59
45
46
42
42
27
164
181
211
229
199
191
155
151
135
104
Wind (km/h)
25
S
25
S
15
S
15
S
10
SW
5
WSW
5
W
5
WSW
5
S
5
N
15
ENE
25
NNE
35
NNE
35
NNE
30
NNE
30
NNE
25
NE
20
ENE
20
ENE
15
ENE
15
ENE
15
NE
15
ENE
15
E
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross
glassy
cross
glassy
glassy
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross
High Tide
9:31PM1.12m
7:03AM1.30m
10:56PM1.07m
7:53AM1.18m
00:24AM1.08m
Low Tide
1:58PM-0.03m
1:35AM0.94m
2:59PM0.11m
2:36AM0.98m
4:13PM0.25m
4:58AM0.96m
clear
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
light rain
light rain
mod rain
mod rain
light rain
light rain
light rain
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
4:58
—
—
—
—
—
—
—
4:56
—
—
—
—
—
—
—
4:56
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
6:15
—
—
—
—
—
—
—
6:16
—
—
—
—
—
—
—
6:17
—
—
—
—
6:19
 mm
—
—
—
—
—
—
—
—
1
3
7
10
4
2
1
—
—
—
—
—
—
—
—
—
Temp °C
18
18
18
18
17
17
17
19
17
14
14
14
14
13
12
14
16
15
14
14
14
13
13
14
Feels °C
13
13
16
17
17
17
17
19
17
14
12
11
8
7
6
8
10
10
10
10
10
9
9
10
Swell 1
Height (m)
Direction
Period (s)
1.4
ESE
10
1.4
ESE
10
0.8
ESE
10
1.2
SE
6
1.3
SE
7
1.1
SE
7
1
SE
7
0.9
SE
6
0.9
SE
6
0.7
SE
6
0.7
ESE
6
0.6
ESE
6
0.7
ESE
5
0.4
E
9
0.4
S
8
0.9
S
8
1
S
9
0.9
SSW
8
0.8
SSW
8
1.3
ENE
7
0.6
S
8
0.5
S
8
0.5
S
7
0.5
NE
13
Energy kJ
402
378
131
116
162
114
85
61
59
40
33
24
25
27
18
107
146
120
94
191
42
29
27
88
Swell 2
Height (m)
Direction
Period (s)
0.4
NE
13
0.4
NE
12
0.4
NE
12
0.7
E
10
0.6
E
10
0.6
E
10
0.6
E
10
0.6
E
10
0.5
E
10
0.5
E
9
0.5
E
10
0.5
E
9
0.5
E
9
0.3
SE
12
0.4
E
9
0.3
E
9
0.3
E
10
0.2
ESE
12
0.2
ESE
12
0.7
S
8
0.4
SW
8
0.4
SW
8
0.4
NE
14
0.4
S
7
Energy kJ
44
54
53
98
71
70
68
67
46
45
46
42
42
22
28
16
17
14
14
66
25
25
70
15
Swell 3
Height (m)
Direction
Period (s)
0.3
SE
13
0.3
SE
13
0.3
SE
13
0.4
NE
12
0.4
NE
14
0.4
NE
14
0.4
NE
14
0.3
SE
13
0.3
SE
12
0.4
SE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.1
NE
12
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.1
NE
15
0.1
NE
15
0.4
SW
9
0.4
NE
15
0.4
NE
14
0.4
SW
8
0.3
SW
8
Energy kJ
27
27
27
38
51
50
50
26
25
39
23
23
22
6
22
22
22
8
9
21
57
52
18
11
Wind waves
Height (m)
Direction
Period (s)
—
—
1.2
SE
6
—
—
—
—
—
—
—
0.3
ENE
2
0.6
NE
3
0.8
NNE
4
1.4
NE
5
1.5
NE
6
1.5
NE
6
1.5
ENE
7
1.5
ENE
7
1.4
ENE
7
—
1.2
E
7
1.2
ENE
7
1.2
ENE
7
1.1
E
6
Energy kJ
—
—
96
—
—
—
—
—
—
—
1
8
21
115
164
181
211
229
199
—
155
151
135
104
Nearest Offshore or Glassy
Ohara
Chiba
Hashikui Bay
Shikoku
Ohara
Chiba
Ohara
Chiba
Ohara
Chiba
Big Ben
Chiba
Amatu
Chiba
Big Ben
Chiba
Amatu
Chiba
Amatu
Chiba
Onjuku
Chiba
Akabane Long Beach
Shizuoka
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Suruga Bay
Shizuoka
Suruga Bay
Shizuoka
Uchiboso
Chiba
Uchiboso
Chiba
Keta Reef Oshima
Izu Islands
Keta Reef Oshima
Izu Islands
Uchiboso
Chiba
Uchiboso
Chiba
Gomoda
Shikoku
Gomoda
Shikoku
Rating
(10 max)
2
1
2
2
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
24
540
24
24
24
6
0
6
0
0
16
279
190
190
184
184
35
35
87
87
35
35
519
519
Best forecast wave conditions in Chiba
Shida
Shida
Tsurigasaki Surfing Beach (Tokyo 2020)
Tsurigasaki Surfing Beach (Tokyo 2020)
Malibu
Malibu
Katagai
Katagai
Mera
Mera
Mera
Uchiboso
Mera
Mera
Rating
(10 max)
2
2
2
1
2
2
1
1
1
1
1
1
2
2
Best forecast wave conditions in Japan
Osaki Point
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
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
Omaezaki
Shizuoka
Susuki
Shizuoka
Niyodo Rivermouth
Shikoku
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Mera
Chiba
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Rating
(10 max)
2
2
2
2
2
2
2
2
3
2
2
2
2
2
2
2
2
1
1
2
2
2
1
1
Header Global
Outer Pool
South Africa
Outer Pool
South Africa
Outer Pool
South Africa
Heaven
South Africa
Bruces Beauties
South Africa
Bruces Beauties
South Africa
Fish Boma
South Africa
Sea Vista
South Africa
Glen Eden
South Africa
Haga-Haga
South Africa
Fish Boma
South Africa
Lebu
Chile
Bocock's Bay
Namibia
Bocock's Bay
Namibia
Lebu
Chile
Lebu
Chile
Lebu
Chile
Lebu
Chile
Lebu
Chile
Lebu
Chile
Lebu
Chile
Cobblestones
Australia
Cobblestones
Australia
Trial Harbour
Australia
Rating
(10 max)
9
7
8
7
9
9
8
9
7
6
5
5
5
5
5
5
5
5
5
5
5
5
5
5
  • 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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