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Surf Forecasts:

Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Tuesday 19 May 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
21.4° C
 (Which is slightly warmer than usual)

How big are the waves at Amatu today?

The current surf forecast for Amatu at 9PM is: 0.7m 11s primary swell from a Southeast direction and 0.7m 10s secondary swell from a East direction, 0.7m 4s secondary swell from a South-southwest direction (forecast issued at 02:00pm May 19). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (19 May)--
Afternoon (19 May)2ft (0.6m)11s
Evening (19 May)2.5ft (0.7m)11s

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 36mm), heaviest during Thu night. Warm (max 23°C on Wed morning, min 16°C on Thu night). Winds increasing (light winds from the NW on Thu afternoon, strong winds from the NNE by Fri morning).

Tue
19
Wednesday
20
Thursday
21
Fri
22
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
0
0
0
0
0
0
2
2
1
1
0
1
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.7
E
9
0.6
SE
11
0.7
E
10
0.7
SE
11
0.7
SE
11
0.7
SE
10
0.7
SE
10
0.8
SE
10
0.9
ESE
10
0.9
ESE
10
0.9
ESE
10
0.8
SE
10
0.9
ESE
10
0.9
ESE
10
0.9
ESE
10
1.6
SSW
7
1.8
SSW
7
1.9
SSW
8
2.1
SSW
8
1.7
SSW
8
1.4
SSW
8
1.6
NE
7
2
NE
7
2.4
NE
7
Wave Graph
Metric surfscale
Energy kJ
87
90
90
110
110
108
104
124
168
164
161
117
142
142
145
212
340
389
531
383
257
240
384
640
Wind (km/h)
25
SSW
25
SSW
25
SSW
20
SSW
20
SW
20
SW
20
SW
25
SW
25
SW
25
SW
25
SW
20
SW
20
SW
20
SW
20
SW
25
SW
30
SW
10
NW
20
NE
25
NNE
20
NNE
25
NNE
35
NNE
40
NNE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
7:37PM1.34m
5:38AM1.46m
8:31PM1.28m
6:24AM1.39m
9:24PM1.23m
7:16AM1.29m
Low Tide
12:15PM-0.22m
00:22AM0.94m
1:04PM-0.13m
1:07AM0.96m
1:55PM0.02m
2:02AM0.96m
clear
clear
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
part cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
mod rain
light rain
mod rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
4:31
—
—
—
—
—
—
—
4:31
—
—
—
—
—
—
—
4:31
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
6:37
—
—
—
—
—
—
—
6:38
—
—
—
—
—
—
—
6:39
—
—
—
—
6:39
 mm
—
—
—
—
—
—
—
—
—
—
—
—
1
1
1
1
1
2
5
8
1
7
3
4
Temp °C
22
21
20
20
19
19
20
22
23
23
22
21
21
21
22
23
22
20
18
16
16
16
16
16
Feels °C
20
19
19
19
18
18
19
20
21
21
21
21
21
21
22
23
20
21
16
13
14
12
11
9
Swell 1
Height (m)
Direction
Period (s)
0.7
E
9
0.7
E
9
0.7
E
10
0.7
E
10
0.7
SE
11
0.7
SE
10
0.7
SE
10
0.8
SE
10
0.9
ESE
10
0.9
ESE
10
0.9
ESE
10
0.8
SE
10
0.9
ESE
10
0.9
ESE
10
0.9
ESE
10
0.8
ESE
10
0.8
ESE
10
0.7
ESE
10
0.7
ESE
10
1.7
SSW
8
1.4
SSW
8
1.1
S
7
0.9
S
7
0.9
SSW
8
Energy kJ
87
87
90
92
110
108
104
124
168
164
161
117
142
142
145
117
107
83
83
383
257
134
86
83
Swell 2
Height (m)
Direction
Period (s)
0.6
SE
10
0.6
SE
11
0.6
SE
11
0.7
SE
11
0.6
E
10
0.6
E
10
0.6
E
10
0.6
E
10
0.3
NE
8
0.3
NE
8
0.3
NE
8
0.5
E
9
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.2
ENE
8
0.1
NE
7
0.1
NE
7
0.3
NE
6
0.6
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.4
WSW
8
Energy kJ
77
90
90
110
71
71
70
70
11
11
11
40
6
6
6
6
2
2
6
74
52
55
52
26
Swell 3
Height (m)
Direction
Period (s)
0.2
ENE
9
0.1
NE
9
0.2
ENE
9
0.3
NE
9
0.4
SSE
4
0.4
SSE
4
0.3
NE
9
0.3
NE
8
—
0.1
S
8
—
0.2
ENE
8
0.1
S
8
—
—
0.1
E
12
—
—
—
0.1
NE
11
—
0.4
WSW
8
0.4
WSW
8
0.5
ESE
10
Energy kJ
8
3
8
13
7
8
12
11
—
1
—
6
1
—
—
3
—
—
—
5
—
26
23
52
Wind waves
Height (m)
Direction
Period (s)
0.6
SSW
4
0.7
SSW
4
0.7
SSW
4
0.7
SSW
4
0.5
SW
4
0.6
SW
4
0.8
SSW
4
0.8
SSW
4
0.9
SW
4
1
SSW
4
1
SSW
4
0.9
SSW
4
0.7
SSW
4
0.9
SSW
4
1
S
6
1.6
SSW
7
1.8
SSW
7
1.9
SSW
8
2.1
SSW
8
0.8
NE
6
1.5
NE
6
1.6
NE
7
2
NE
7
2.4
NE
7
Energy kJ
8
11
12
12
6
10
18
19
23
35
39
29
20
25
64
212
340
389
531
40
172
240
384
640
Nearest Offshore or Glassy
Shida
Chiba
Takegashima
Shikoku
Hashikui Bay
Shikoku
Shimoda Yamatoken (Tatado Hama)
Shizuoka
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Susuki
Shizuoka
Hashikui Bay
Shikoku
Hashikui Bay
Shikoku
Shimoda Yamatoken (Tatado Hama)
Shizuoka
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Tsurigasaki Surfing Beach (Tokyo 2020)
Chiba
Tsurigasaki Surfing Beach (Tokyo 2020)
Chiba
Amatu
Chiba
Akabane Long Beach
Shizuoka
Niijima - Awaii
Izu Islands
Uchiboso
Chiba
Nunoshima
Shikoku
Nunoshima
Shikoku
Tainohama
Shikoku
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
3
3
1
2
1
1
Distance (km)
30
567
540
126
96
96
96
189
540
540
126
96
96
96
96
30
30
0
279
117
35
537
537
538
Best forecast wave conditions in Chiba
Shida
Tsurigasaki Surfing Beach (Tokyo 2020)
Tsurigasaki Surfing Beach (Tokyo 2020)
Chikura
Uchiboso
Rating
(10 max)
1
2
2
3
1
Best forecast wave conditions in Japan
Takegashima
Shikoku
Takegashima
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Akabane Long Beach
Shizuoka
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Takegashima
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Chikura
Chiba
Akabane Long Beach
Shizuoka
Niyodo Rivermouth
Shikoku
Akabane Long Beach
Shizuoka
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Rating
(10 max)
1
1
1
1
1
2
2
2
2
2
2
2
2
3
2
2
2
3
3
4
4
2
2
2
Header Global
Avalon-North
Australia
Black Rock
Australia
Bankvaults
Indonesia
Bankvaults
Indonesia
Bali Village
Indonesia
Bali Village
Indonesia
Afife
Portugal
Cavalos de Fao
Portugal
Cavalos de Fao
Portugal
Crazy Left
Portugal
Achadas Da Cruz
Portugal
Anglet - Corsaires
France
Arrifana
Portugal
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Anglet - Corsaires
France
Lambe Lambe
Brazil
Cathedral Rock
Australia
Dunedin - Bobs Beach
New Zealand
Bali Village
Indonesia
Pauba
Brazil
Bondo Kodi
Indonesia
Otago Peninsula - Allans Beach
New Zealand
Rating
(10 max)
4
4
4
4
4
4
4
5
5
5
4
4
4
5
5
5
4
5
4
4
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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