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Surf Forecasts:

Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Tuesday 28 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
20.4° C
 (Which is 1.4°C warmer than normal for this time of year)

How big are the waves at Amatu today?

The current surf forecast for Amatu at 7PM is: 1.4m 5s primary swell from a Southwest direction and 0.5m 8s secondary swell from a East direction, 0.4m 7s secondary swell from a South-southeast direction (forecast issued at 02:00pm April 28). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (28 Apr)--
Afternoon (28 Apr)2ft (0.6m)8s
Evening (28 Apr)5.5ft (1.7m)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 47mm), heaviest during Fri morning. Warm (max 20°C on Tue afternoon, min 14°C on Wed night). Winds increasing (light winds from the NNE on Wed morning, strong winds from the ESE by Fri morning).

Tue
28
Wednesday
29
Thursday
30
Fri
1
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
2
2
0
0
0
0
0
0
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)
0.8
SSW
7
0.6
E
8
1.2
SW
5
1.7
SW
6
1.8
SW
6
1.7
SW
6
1.5
SSW
6
1.6
SW
7
1.6
SW
6
0.9
SSW
6
0.8
SSW
6
0.7
SW
6
0.6
SW
6
0.4
SW
6
0.4
ESE
8
1.1
ENE
6
1
E
5
1
E
5
0.9
E
5
1.3
ESE
5
1.4
SE
5
1.4
SE
6
1.8
SE
6
3
SE
7
Wave Graph
Metric surfscale
Energy kJ
63
42
62
195
231
223
181
230
203
60
49
40
24
13
19
80
59
55
40
77
106
133
231
861
Wind (km/h)
25
S
25
SSW
35
SW
40
SW
35
SW
30
SW
15
WSW
10
NNE
15
NE
20
NE
25
ENE
30
ENE
25
NE
25
NE
25
NE
20
ENE
15
ENE
15
E
15
E
20
ESE
25
SE
25
SE
35
SE
40
ESE
Wind State
cross-on
cross-on
cross
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross
cross
cross
cross-on
cross-on
cross-on
on
on
cross-on
High Tide
2:49PM1.18m
2:50AM1.29m
3:38PM1.25m
3:15AM1.33m
4:21PM1.29m
3:39AM1.35m
Low Tide
8:42PM0.49m
9:19AM0.32m
9:21PM0.53m
9:50AM0.18m
9:56PM0.58m
cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
mod rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
4:50
—
—
—
—
—
—
—
4:50
—
—
—
—
—
—
—
4:48
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
6:21
—
—
—
—
—
—
—
6:22
—
—
—
—
—
—
—
6:22
—
—
—
—
6:23
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3
4
7
15
Temp °C
20
20
19
19
19
18
18
18
18
17
16
15
14
14
14
15
15
16
16
16
16
16
17
17
Feels °C
17
16
14
14
14
14
17
18
17
15
12
10
9
9
9
10
11
13
13
13
13
12
13
11
Swell 1
Height (m)
Direction
Period (s)
0.6
ESE
8
0.6
E
8
0.5
E
8
0.5
E
9
0.5
E
9
0.4
E
9
0.4
E
9
1.4
SSW
6
1.1
SSW
6
0.9
SSW
6
0.8
SSW
6
0.7
SW
6
0.6
SW
6
0.4
SW
6
0.4
ESE
8
0.4
ESE
8
0.4
ESE
8
0.4
E
8
0.4
E
8
0.1
NE
7
0.3
E
8
0.3
SE
10
0.1
NE
7
0.1
NE
8
Energy kJ
44
42
31
39
41
26
25
155
97
60
49
40
24
13
19
20
22
19
19
2
12
14
2
2
Swell 2
Height (m)
Direction
Period (s)
0.5
NE
7
0.3
SSE
7
0.4
SSE
7
0.2
ENE
6
0.1
NE
10
0.1
NE
8
0.1
NE
10
0.4
E
9
0.4
E
9
0.4
ESE
9
0.1
SE
11
0.1
SE
11
0.1
SE
8
0.3
E
8
0.4
SW
6
0.3
SE
8
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.1
SW
6
0.1
NE
8
0.1
NE
8
0.1
NE
13
0.1
NE
13
Energy kJ
23
9
18
4
4
2
4
25
25
26
5
5
3
12
9
11
12
12
12
1
2
2
6
6
Swell 3
Height (m)
Direction
Period (s)
0.1
NE
11
0.4
NE
7
0.3
NE
6
0.1
NE
10
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
NE
9
0.3
NE
5
0.2
ENE
8
0.1
S
13
0.1
S
8
0.1
S
12
0.2
SSE
7
0.3
SE
8
0.3
SW
6
0.1
SW
6
0.1
SE
6
0.3
SE
6
—
0.1
SW
6
0.1
E
13
—
0.1
NE
10
Energy kJ
5
11
7
4
5
5
5
3
4
6
3
1
3
5
10
5
1
2
6
—
1
3
—
4
Wind waves
Height (m)
Direction
Period (s)
0.8
SSW
7
0.9
SSW
4
1.2
SW
5
1.7
SW
6
1.8
SW
6
1.7
SW
6
1.5
SSW
6
1.6
SW
7
1.6
SW
6
0.6
NE
5
1.3
ENE
5
1.3
ENE
6
1.4
ENE
6
1.3
ENE
6
1.2
ENE
6
1.1
ENE
6
1
E
5
1
E
5
0.9
E
5
1.3
ESE
5
1.4
SE
5
1.4
SE
6
1.8
SE
6
3
SE
7
Energy kJ
63
28
62
195
231
223
181
230
203
15
80
115
145
111
87
80
59
55
40
77
106
133
231
861
Nearest Offshore or Glassy
Ohara
Chiba
Cobra Reef - Cemento
West Luzon
Okuragahama
Kyu Shu
Osaki Point
Shikoku
Akabane Long Beach
Shizuoka
Katagai
Chiba
Big Ben
Chiba
Amatu
Chiba
Amatu
Chiba
Uchiboso
Chiba
Keta Reef Oshima
Izu Islands
Suruga Bay
Shizuoka
Livadia
Primorsky Krai
Livadia
Primorsky Krai
Kaiser's (Hachijojima Island)
Izu Islands
Livadia
Primorsky Krai
Ikei Island
Okinawa
Tainohama
Shikoku
Ohara
Chiba
Monabe Rivermouth
Shikoku
Nagahama
Kanagawa
Kurihama
Kanagawa
Teba Shima
Shikoku
Nunoshima
Shikoku
Rating
(10 max)
1
1
1
1
2
2
2
2
2
1
1
1
2
2
1
1
1
1
1
1
1
1
2
2
Distance (km)
24
2839
846
582
279
52
6
0
0
35
87
184
1078
1078
231
1078
1514
538
24
615
53
46
554
537
Best forecast wave conditions in Chiba
Shida
Katagai
Malibu
Chikura
Amatu
Mera
Shida
Rating
(10 max)
1
2
2
2
2
1
1
Best forecast wave conditions in Japan
Aha Rivermouth
Okinawa
Ko-Chan (Hedo Point)
Okinawa
Niyodo Rivermouth
Shikoku
Akabane Long Beach
Shizuoka
Katagai
Chiba
Malibu
Chiba
Chikura
Chiba
Amatu
Chiba
Mera
Chiba
Keta Reef Oshima
Izu Islands
Suruga Bay
Shizuoka
Kaiser's (Hachijojima Island)
Izu Islands
Ikei Island
Okinawa
Kudaka
Okinawa
Castles
Okinawa
Niyodo Rivermouth
Shikoku
Inamura Point
Kanagawa
Sakawa River
Kanagawa
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Rating
(10 max)
1
1
1
2
2
2
2
2
1
1
1
1
1
1
1
2
1
1
3
3
Header Global
Gas Bay
Australia
Cobblestones
Australia
Cobblestones
Australia
Benkunqut
Indonesia
Easter Reef
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Whacky Point
South Africa
Amanzimtoti
South Africa
Glen Eden
South Africa
Barbel Point
South Africa
Papatowai
New Zealand
Papatowai
New Zealand
Papatowai
New Zealand
Papatowai
New Zealand
Lebu
Chile
Amanzimtoti
South Africa
Lebu
Chile
Papatowai
New Zealand
Puertecillo
Chile
Dolphin Point
South Africa
Dolphin Point
South Africa
Boneyards
South Africa
Boneyards
South Africa
Rating
(10 max)
5
5
5
4
5
8
8
9
9
8
7
7
7
7
6
6
5
5
5
5
6
6
6
6
  • 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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