Choshi surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 am Friday 15 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Choshi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Choshi sea temperature is
17.8° C
(Which is 2.2°C colder than average for this time of year)

How big are the waves at Choshi today?

The current surf forecast for Choshi at 10AM is: 1.0m 9s primary swell from a East direction and 0.2m 9s secondary swell from a East-northeast direction (forecast issued at 02:00am May 15). An open ocean swell of 0.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (15 May)3.5ft (1.0m)9s
Afternoon (15 May)3.5ft (1.0m)9s
Evening (15 May)3.5ft (1.0m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 20°C on Sat afternoon, min 15°C on Fri morning). Wind will be generally light.

Friday
15
Saturday
16
Sunday
17
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
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
1
1
1
0
0
2
2
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1
E
10
1
E
9
1
E
9
1
E
9
1
E
9
1
E
9
1
E
9
1
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.8
E
9
0.8
E
9
0.8
ESE
9
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
8
1
E
9
1.4
ESE
9
1.1
ESE
9
Wave Graph
Metric surfscale
Energy kJ
184
180
180
175
175
175
168
164
133
130
130
101
103
108
110
110
121
121
135
129
118
158
307
206
Wind (km/h)
25
NE
20
NE
20
NE
20
NE
20
NE
15
ENE
15
E
10
E
5
NE
10
N
10
NE
15
NE
15
ENE
15
E
10
ESE
5
SE
5
WSW
5
W
10
NNW
10
N
15
NE
20
NE
15
NE
0
N
cross-off
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross
cross-off
cross
cross
cross-on
cross-on
cross-on
on
glassy
cross-off
cross-off
cross-off
cross-off
cross
cross
glassy
High Tide
2:01AM1.19m
3:40PM1.18m
2:29AM1.25m
4:34PM1.22m
3:00AM1.31m
5:26PM1.23m
Low Tide
8:51AM0.06m
9:00PM0.68m
9:33AM-0.10m
9:41PM0.76m
10:15AM-0.20m
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:31
4:31
4:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:34
6:35
6:35
Temp °C
15
14
14
15
16
16
17
17
17
17
17
18
19
19
20
19
19
19
19
20
20
20
19
19
11
10
11
12
13
13
15
15
16
16
15
16
18
17
20
19
20
19
19
19
18
17
17
19
Swell 1
Height (m)
Direction
Period (s)
1
E
10
1
E
9
1
E
9
1
E
9
1
E
9
1
E
9
1
E
9
1
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.8
E
9
0.8
E
9
0.8
ESE
9
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
8
1
E
9
1.4
ESE
9
1.1
ESE
9
Energy kJ
184
180
180
175
175
175
168
164
133
130
130
101
103
108
110
110
121
121
135
129
118
158
307
206
Swell 2
Height (m)
Direction
Period (s)
0.4
NE
9
0.1
NE
9
0.2
ENE
9
0.2
ENE
9
0.1
NE
9
0.4
NE
7
0.4
NE
7
0.4
NE
7
0.3
NE
7
0.3
NE
6
0.4
NE
8
0.4
NE
8
0.3
NE
8
0.4
NE
8
0.4
NE
9
0.3
NE
8
0.3
NE
8
0.1
SE
11
0.3
SE
10
0.4
SE
10
0.4
SE
10
0.4
NE
9
0.4
NE
10
Energy kJ
23
3
8
8
3
17
16
15
7
6
17
17
10
17
20
11
11
5
17
24
33
31
24
Swell 3
Height (m)
Direction
Period (s)
0.1
S
7
0.1
E
16
0.1
E
16
0.3
SE
12
0.1
S
7
0.3
NE
9
0.5
SE
9
0.1
SE
11
0.1
SE
11
0.2
ENE
8
0.2
ESE
11
0.2
ESE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
SE
11
0.1
NE
9
0.4
SE
10
0.4
NE
9
0.3
ENE
9
0.3
ENE
9
0.2
ENE
9
Energy kJ
1
5
5
21
1
13
37
5
5
7
12
12
5
5
5
5
5
3
38
29
16
16
8
Wind waves
Height (m)
Direction
Period (s)
1.1
NE
5
0.9
NE
5
0.8
NE
5
0.6
NE
6
0.6
NE
7
0.6
NE
7
0.4
NNE
6
0.4
NNE
6
1.1
ESE
9
Energy kJ
55
45
32
31
30
30
15
15
211
Nearest Offshore or Glassy
Rating
(10 max)
2
3
2
2
2
2
1
2
1
1
1
2
2
1
2
1
1
1
1
1
2
1
1
2
Distance (km)
125
125
125
125
125
112
170
71
37
0
57
86
71
112
71
37
0
0
0
0
56
112
207
0
Best forecast wave conditions in Chiba
Rating
(10 max)
2
3
2
2
2
1
3
2
2
2
2
2
1
2
2
1
1
2
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
3
2
2
2
2
1
3
2
2
2
2
2
2
2
2
1
1
2
2
2
1
1
2
Header Global
Rating
(10 max)
5
5
5
5
6
5
5
5
5
5
5
5
5
5
4
5
5
5
5
5
4
5
5
8
  • 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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