Choshi surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Thursday 21 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
20.0° C
(Which is slightly cooler than normal)

How big are the waves at Choshi today?

The current surf forecast for Choshi at 10PM is: 0.8m 8s primary swell from a South-southeast direction and 0.5m 10s secondary swell from a East direction (forecast issued at 02:00pm May 21). An open ocean swell of 1.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (21 May)--
Afternoon (21 May)3ft (0.9m)7s
Evening (21 May)2.5ft (0.8m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 21mm), heaviest during Thu afternoon. Very mild (max 19°C on Sat night, min 15°C on Fri afternoon). Winds decreasing (near gales from the NNE on Fri morning, light winds from the E by Sat afternoon).

Thu
21
Friday
22
Saturday
23
Sun
24
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
1
0
1
0
0
1
0
2
0
0
0
0
0
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)
0.9
SSE
7
0.9
SSE
7
0.9
SSE
8
0.8
SSE
8
1.5
ENE
7
1.4
ENE
7
1.6
ENE
7
2.1
ENE
7
0.4
SSE
7
0.3
SSE
7
2.5
ENE
9
2.5
ENE
9
2.3
ENE
9
2.2
ENE
9
2
ENE
9
1.8
ENE
9
1.6
ENE
9
2
ENE
9
1.5
E
9
1.4
E
9
1.7
E
9
1.4
E
9
1.4
E
9
1.4
ESE
9
Wave Graph
Metric surfscale
Energy kJ
82
97
96
87
199
175
243
384
18
10
1009
975
840
747
637
493
413
637
364
320
473
327
332
326
Wind (km/h)
20
NNW
30
N
40
N
30
NNE
35
NNE
35
NNE
35
NE
45
NNE
50
NNE
50
NNE
45
NNE
40
NE
35
NNE
30
NE
30
NE
25
NE
20
NE
20
NE
15
E
15
ESE
20
SE
20
SE
20
SSE
20
SSE
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross-on
on
on
on
cross-on
cross-on
High Tide
9:00PM1.05m
6:23AM1.19m
9:57PM1.01m
7:26AM1.07m
10:48PM1.00m
Low Tide
1:22PM-0.03m
1:10AM0.90m
2:16PM0.11m
2:21AM0.86m
3:13PM0.26m
4:03AM0.79m
light rain
mod rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
light rain
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:26
4:26
4:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:38
6:39
6:40
3
7
1
1
1
1
2
1
2
1
1
1
1
Temp °C
18
17
17
17
17
18
18
17
16
15
15
15
15
15
16
16
17
17
18
19
19
19
18
19
17
13
11
13
12
13
13
10
7
6
7
7
8
9
10
11
13
13
15
17
16
16
15
17
Swell 1
Height (m)
Direction
Period (s)
0.9
SSE
7
0.9
SSE
7
0.9
SSE
8
0.8
SSE
8
0.7
SSE
8
0.6
SSE
8
0.5
SSE
7
0.5
S
7
0.4
SSE
7
0.3
SSE
7
0.3
SSE
7
0.4
SSW
7
0.4
S
7
0.4
S
7
0.4
S
7
0.4
S
7
0.3
S
7
2
ENE
9
1.5
E
9
1.4
E
9
1.7
E
9
1.4
E
9
1.4
E
9
1.4
ESE
9
Energy kJ
82
97
96
87
67
47
31
27
18
10
9
16
15
15
16
15
8
637
364
320
473
327
332
326
Swell 2
Height (m)
Direction
Period (s)
0.5
ESE
10
0.5
ESE
10
0.5
E
10
0.5
E
10
0.6
ESE
10
0.4
ESE
10
0.5
ESE
10
0.5
ESE
10
0.2
S
9
0.2
S
9
0.3
SW
8
0.3
SW
8
0.2
SSW
7
0.3
S
7
0.3
S
7
0.3
S
6
0.3
NE
10
0.3
NE
10
0.3
NE
10
0.3
NE
10
Energy kJ
54
55
49
49
71
30
52
52
7
7
9
9
5
8
8
7
16
15
15
14
Swell 3
Height (m)
Direction
Period (s)
0.1
E
11
0.1
NE
11
0.1
NE
11
0.1
NE
11
0.2
SSW
10
0.1
SE
8
0.1
SE
12
0.1
SE
12
Energy kJ
2
5
5
5
9
2
6
6
Wind waves
Height (m)
Direction
Period (s)
0.9
NNE
5
1.3
NNE
6
1.4
NE
6
1.4
NE
6
1.5
ENE
7
1.4
ENE
7
1.6
ENE
7
2.1
ENE
7
2.4
ENE
7
2.5
NE
8
2.5
ENE
9
2.5
ENE
9
2.3
ENE
9
2.2
ENE
9
2
ENE
9
1.8
ENE
9
1.6
ENE
9
1.5
E
9
1.4
E
9
0.7
SE
6
1
SE
5
1.1
SE
6
Energy kJ
34
107
157
166
199
175
243
384
611
976
1009
975
840
747
637
493
413
363
318
37
45
72
Nearest Offshore or Glassy
Rating
(10 max)
2
4
1
2
1
2
3
2
2
2
1
1
1
1
2
1
1
1
1
2
1
1
1
1
Distance (km)
37
57
125
71
117
86
266
266
266
266
266
266
674
674
674
920
920
916
170
56
121
159
121
159
Best forecast wave conditions in Chiba
Rating
(10 max)
2
4
3
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
2
4
3
3
4
2
3
2
2
2
1
1
1
1
2
1
1
2
1
2
1
4
3
3
Header Global
Rating
(10 max)
5
5
5
5
5
5
5
4
5
7
7
7
6
5
7
5
7
7
8
8
7
6
7
5
  • 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

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Choshi surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest