Choshi surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Monday 11 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
17.1° C
(Which is 2.7°C colder than average for this time of year)

How big are the waves at Choshi today?

The current surf forecast for Choshi at 7PM is: 0.5m 10s primary swell from a East-southeast direction and 0.7m 4s secondary swell from a South-southeast direction (forecast issued at 02:00pm May 11). An open ocean swell of 0.1m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (11 May)--
Afternoon (11 May)1.5ft (0.5m)10s
Evening (11 May)1.5ft (0.5m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 19°C on Mon afternoon, min 17°C on Mon night). Wind will be generally light.

Mon
11
Tuesday
12
Wednesday
13
Thu
14
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
1
1
1
1
0
0
1
1
2
1
0
1
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)
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.8
SE
10
0.6
ESE
10
0.8
ESE
10
0.8
SE
10
1
SE
9
1.1
SE
9
1
ESE
9
1.1
ESE
9
1.1
ESE
9
1.2
ESE
9
1.3
ESE
9
1.3
ESE
10
1.3
ESE
10
1.3
ESE
10
1.3
ESE
10
1.2
ESE
10
1.2
ESE
10
1.1
ESE
10
Wave Graph
Metric surfscale
Energy kJ
58
57
56
56
54
55
115
74
117
110
166
190
168
199
199
237
293
318
295
301
307
288
282
245
Wind (km/h)
25
S
25
S
25
S
20
S
20
S
10
S
10
SSE
10
ESE
15
SE
10
SE
15
SE
10
SSE
0
SSW
5
N
10
NE
10
ENE
10
E
15
E
10
E
10
NE
15
NNE
15
NNE
20
NE
25
NNE
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
on
glassy
glassy
cross-off
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross
cross-off
High Tide
9:59AM0.95m
00:40AM1.02m
12:03PM0.96m
1:08AM1.07m
1:33PM1.03m
1:34AM1.12m
Low Tide
5:19PM0.40m
6:33AM0.64m
6:28PM0.46m
7:25AM0.45m
7:26PM0.52m
8:09AM0.25m
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:35
4:33
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:30
6:30
6:31
6:32
Temp °C
19
19
19
18
18
18
17
18
18
19
19
18
18
18
17
18
19
19
19
19
18
18
18
18
15
14
15
15
15
16
15
16
15
17
17
16
18
18
16
17
17
18
19
19
17
17
16
14
Swell 1
Height (m)
Direction
Period (s)
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.8
SE
10
0.6
ESE
10
0.5
SE
8
0.8
SE
10
1
SE
9
1.1
SE
9
1
ESE
9
1.1
ESE
9
1.1
ESE
9
1.2
ESE
9
1.3
ESE
9
1.3
ESE
10
1.3
ESE
10
1.3
ESE
10
1.3
ESE
10
1.2
ESE
10
1.2
ESE
10
1.1
ESE
10
Energy kJ
58
57
56
56
54
55
115
74
29
110
166
190
168
199
199
237
293
318
295
301
307
288
282
245
Swell 2
Height (m)
Direction
Period (s)
0.1
E
11
0.1
NE
11
0.1
NE
13
0.1
NE
11
0.2
ENE
11
0.2
SSE
8
0.3
NE
10
0.6
SSE
8
0.2
ENE
10
0.5
ESE
9
0.1
NE
9
0.1
NE
9
0.1
NE
9
0.1
NE
9
0.1
NE
12
0.1
NE
11
0.1
NE
10
0.1
NE
10
0.1
NE
10
0.1
NE
10
0.1
NE
10
0.1
NE
10
0.1
NE
10
0.1
NE
10
Energy kJ
2
5
7
5
11
6
16
46
9
48
3
3
3
3
6
5
4
4
4
4
4
4
4
4
Swell 3
Height (m)
Direction
Period (s)
0.1
N
6
0.1
NE
8
0.1
E
8
0.1
NE
8
0.1
SE
8
0.3
NE
10
0.2
SSE
8
0.3
NE
10
0.4
NE
10
0.1
NE
9
0.1
E
13
0.1
NE
13
0.1
NE
12
0.1
S
9
0.1
S
9
0.1
S
9
0.1
S
9
Energy kJ
1
3
1
2
3
17
6
15
24
3
3
6
6
2
2
2
2
Wind waves
Height (m)
Direction
Period (s)
0.9
SSE
5
0.8
SSE
4
0.8
SSE
4
0.7
SSE
4
0.6
SSE
5
0.6
SSE
5
0.8
ESE
10
0.4
NNE
3
Energy kJ
37
26
26
21
17
16
117
4
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
2
2
1
2
2
2
2
2
1
1
1
2
1
2
1
2
2
2
2
2
Distance (km)
56
56
56
55
55
55
37
56
56
56
56
56
0
0
0
71
112
56
117
71
0
37
37
125
Best forecast wave conditions in Chiba
Rating
(10 max)
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
2
2
2
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
2
2
2
Header Global
Rating
(10 max)
8
6
5
4
5
5
5
9
9
6
9
9
9
9
9
8
9
9
9
7
6
5
9
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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