Amatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 am Monday 25 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
21.1° C
(Which is normal for this time of year)

How big are the waves at Amatu today?

The current surf forecast for Amatu at 7AM is: 1.2m 10s primary swell from a East-northeast direction and 1.3m 7s secondary swell from a Southeast direction (forecast issued at 02:00am May 25). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (25 May)4ft (1.2m)10s
Afternoon (25 May)4.5ft (1.3m)11s
Evening (25 May)4ft (1.2m)11s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 5mm), mostly falling on Wed morning. Warm (max 23°C on Wed afternoon, min 19°C on Mon night). Wind will be generally light.

Monday
25
Tuesday
26
Wednesday
27
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
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
1
1
1
1
0
1
1
1
1
1
0
1
0
0
1
1
1
1
1
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.3
ENE
9
1.3
ENE
9
1.2
ENE
10
1.2
ENE
10
1.2
ENE
11
1.3
ENE
11
1.2
ENE
11
1.2
ENE
11
1.1
ENE
11
1
ENE
11
1
ENE
11
1.3
SE
8
1.3
ESE
8
1.2
ESE
8
1.2
ESE
8
0.9
ENE
10
1.2
ESE
8
1.2
ESE
8
1.3
ESE
8
1.3
ESE
7
1.3
ESE
7
1.3
ESE
7
1.4
ESE
7
1.4
SE
7
Wave Graph
Metric surfscale
Energy kJ
276
283
276
331
350
387
343
331
270
249
245
198
187
184
158
149
158
158
173
169
164
193
202
200
Wind (km/h)
15
ESE
10
E
10
ENE
15
ENE
15
E
15
E
10
E
10
E
10
E
10
E
10
E
10
E
10
E
15
E
15
E
10
ENE
5
E
5
ESE
5
E
10
ESE
15
SE
15
SSE
15
SSE
15
S
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
on
on
on
on
High Tide
11:57PM1.21m
12:05PM1.03m
00:40AM1.24m
1:39PM1.08m
1:18AM1.28m
2:46PM1.14m
Low Tide
6:30AM0.72m
6:00PM0.60m
7:30AM0.56m
7:02PM0.68m
8:15AM0.41m
7:57PM0.74m
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
light rain
light rain
light rain
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:28
4:28
4:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:43
6:44
1
2
1
1
Temp °C
19
19
19
21
22
22
20
19
19
20
20
22
22
22
21
20
20
20
20
22
22
23
23
22
18
19
19
20
21
21
20
19
20
21
20
22
22
22
21
21
22
22
22
24
23
25
25
23
Swell 1
Height (m)
Direction
Period (s)
1.4
SE
7
1.4
SE
7
1.3
SE
7
1.4
SE
7
1.3
SE
8
1.3
SE
8
1.3
SE
8
1.2
SE
8
1.2
SE
8
1.2
SE
8
1.2
SE
8
1.3
SE
8
1.3
ESE
8
1.2
ESE
8
1.2
ESE
8
1.1
ESE
8
1.2
ESE
8
1.2
ESE
8
1.3
ESE
8
1.3
ESE
7
1.3
ESE
7
1.3
ESE
7
1.4
ESE
7
1.4
SE
7
Energy kJ
193
199
194
215
200
200
186
169
169
169
173
181
187
162
158
145
158
158
173
169
164
193
202
200
Swell 2
Height (m)
Direction
Period (s)
1.3
ENE
9
1.3
ENE
9
1.2
ENE
10
1.2
ENE
10
1.2
ENE
11
1.3
ENE
11
1.2
ENE
11
1.2
ENE
11
1.1
ENE
11
1
ENE
11
1
ENE
11
0.9
ENE
11
0.9
ENE
10
0.9
ENE
10
0.9
ENE
10
0.9
ENE
10
0.8
ENE
10
0.7
ENE
10
0.7
ENE
10
0.6
ENE
10
0.5
ENE
11
0.4
ENE
11
0.4
ENE
11
0.4
ENE
10
Energy kJ
276
283
276
331
350
387
343
331
270
249
245
198
187
184
149
149
116
102
100
74
64
44
45
43
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
11
0.2
ESE
11
0.2
ESE
11
0.2
ESE
11
0.1
S
9
0.2
SSW
9
0.4
SSW
8
0.5
S
7
0.5
S
7
0.5
S
7
0.4
S
7
0.2
ESE
15
0.3
S
7
0.3
S
6
0.2
ESE
15
0.2
S
6
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
Energy kJ
12
12
12
12
2
8
21
28
26
24
15
22
8
7
21
3
21
20
20
19
19
19
18
18
Wind waves
Height (m)
Direction
Period (s)
Energy kJ
Nearest Offshore or Glassy
Rating
(10 max)
2
2
1
1
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
1
2
3
2
Distance (km)
24
30
35
35
24
35
24
24
24
30
40
24
40
30
24
16
24
24
24
24
43
24
24
24
Best forecast wave conditions in Chiba
Rating
(10 max)
2
2
2
2
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
2
Best forecast wave conditions in Japan
Rating
(10 max)
3
4
4
3
3
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
2
Header Global
Rating
(10 max)
5
5
5
5
4
4
4
5
4
4
4
4
5
5
9
9
9
6
6
7
7
8
7
7
  • 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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