Surf Forecast Surf Report

Choshi surfForecast / Chiba / Japan

information circle12 Day Weather and Surf, issued 8 pm Monday 31 Mar 2025 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
15.0° C
(Which is 1.7°C colder than average for this time of year)


Best Forecast Surf Conditions for Choshi this week:

The surf forecast for Choshi over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Apr 01) at 9PM. The primary swell is predicted to be 2.3m and 9s period with a secondary swell of 1.2m and 11s. Another secondary swell of 0.4m and 11s is also forecast. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Choshi in the next 12 days are 3.5m 11s and forecast to arrive on Wednesday (Apr 02) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Saturday (Apr 05) at 12AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 1st Apr)7.5ft (2.3m) 9s
Best Surf12AM (Wed 2nd Apr)10ft (3.0m) 9s
Most Powerful 6PM (Wed 2nd Apr)11ft (3.5m) 11s

Table - best surf conditions forecast for Choshi over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Sat
12
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.7
ENE
2.2
E
2.5
E
3
ESE
3
E
3.5
E
3
ENE
2.4
ENE
2
ENE
1.9
E
1.6
ENE
1.5
ENE
1.3
ENE
0.9
ENE
0.8
ENE
0.7
ENE
1.5
S
1.8
S
0.6
ESE
0.7
SE
0.7
ESE
0.5
ESE
1
S
1.4
S
1.2
SSW
0.9
SE
0.8
ESE
0.8
ESE
0.7
ESE
0.4
E
1.1
S
0.9
S
0.6
ESE
0.6
ESE
0.8
ESE
1.6
S
Period(s) (?)1278910111111111113131212121167787856699991056101099
Wave
Graph
(?)Metric surfscale
Energy (?)847510980124218862595204912919168987866925012501791191392774157483249121110115948479377168727294403
Wind
(km/h)
30
NE
40
ENE
25
SE
15
SE
30
E
35
NE
30
N
15
NE
10
ESE
35
NNE
15
N
15
ENE
15
NE
10
ESE
25
S
35
SSW
30
SW
40
SSW
25
NNE
5
N
20
SSE
25
SSW
30
SW
30
SSW
35
NE
25
NE
20
NE
10
SE
25
SSW
40
SSW
35
SW
10
NNE
30
NE
20
NE
15
NE
10
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
ononcross-
on
crosscross-
off
cross-
off
cross-
on
cross-
off
cross-
off
crosscrossoncross-
on
crosscrosscross-
on
cross-
off
cross-
off
cross-
on
cross-
on
crosscrosscrosscrosscrossoncross-
on
cross-
on
crosscross-
off
crosscrosscrosson
High Tide
/ height (m)
5:03AM
1.31
6:41PM
1.17
5:24AM
1.32
7:38PM
1.07
5:46AM
1.30
8:49PM
0.96
6:08AM
1.26
6:31AM
1.18
6:48AM
1.08
3:13AM
0.99
2:48AM
1.01
12:46PM
0.95
2:54AM
1.04
2:00PM
1.02
3:05AM
1.08
2:51PM
1.09
3:20AM
1.13
3:33PM
1.13
3:36AM
1.18
4:11PM
1.15
Low Tide
/ height (m)
11:24PM
0.54
11:56AM
-0.10
11:51PM
0.67
12:38PM
-0.10
12:13AM
0.79
1:24PM
-0.04
12:24AM
0.87
2:18PM
0.06
3:31PM
0.17
5:12PM
0.26
6:45PM
0.28
8:07AM
0.80
7:45PM
0.28
8:33AM
0.64
8:28PM
0.29
9:00AM
0.49
9:01PM
0.31
9:28AM
0.35
9:31PM
0.35
9:56AM
0.24
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Sat
12
Sunrise-5:24--5:22--5:20--5:20--5:18--5:16--5:16--5:13--5:13--5:11--5:09--5:09-
Sunset--5:57--5:58--5:59--6:00--6:00--6:00--6:01--6:02--6:04--6:05--6:05--6:06
light rainmod rainmod rainheavy rainlight raincloudcloudcloudcloudlight rainclearclearpart cloudpart cloudpart cloudclearpart cloudpart cloudthunderstorm clearclearclearclearpart cloudcloudclearclearpart cloudpart cloudcloudmod raincloudcloudpart cloudclearclear
Rain (mm)
296203----3--------2-----------10-----
Temp. °C91214151514121112131112121315151716161415161920171314161818181614151616
Feels °C (?)141091085891067681081091110101112141671013131111149101313

Short Range Forecast: Heavy rain (total 40mm), heaviest during Tue night. Very mild (max 15°C on Tue night, min 6°C on Mon night). Winds decreasing (strong winds from the E on Tue morning, light winds from the ENE by Thu morning).

Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Thu night. Very mild (max 17°C on Sun morning, min 9°C on Thu night). Winds increasing (light winds from the ENE on Fri night, strong winds from the SSW by Sun afternoon).

Days 6-9 Weather Summary Light rain (total 2mm), mostly falling on Sun night. Warm (max 20°C on Tue afternoon, min 12°C on Sun night). Mainly fresh winds.

Long Range Forecast: Moderate rain (total 10mm), heaviest on Thu night. Very mild (max 18°C on Thu morning, min 14°C on Fri afternoon). Mainly strong winds.

  • 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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Information about the Choshi Surf forecast

The above surf forecast table for Choshi provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Choshi can be found by selecting the local surf guide option on the grey menu. Our Choshi surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Choshi) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Choshi may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Choshi is 4 km (2 miles) from Hasaki. If you plan a holiday in Chiba, look for hotels and other accommodation in Hasaki. Hasaki has rooms for a wide range of budgets as well as car hire and transport links.

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