Choshi surfForecast / Chiba / Japan

information circle12 Day Weather and Surf, issued 2 am Sunday 06 Jul 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
24.1° C
(Which is normal 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 Sunday (Jul 06) at 9AM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.2m and 5s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Choshi in the next 12 days are 1.3m 8s and forecast to arrive on Sunday (Jul 13) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.1m 7s period and expected on Friday (Jul 11) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Sun 6th Jul)3.5ft (1.1m) 10s
Best Surf 9AM (Sun 6th Jul)3.5ft (1.1m) 10s
Most Powerful 3AM (Sun 13th Jul)4.5ft (1.3m) 8s

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

Updates in  hr  min  s Forecast update imminent
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
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
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.1
ESE
1.1
ESE
1.1
ESE
0.9
ESE
0.9
ESE
1
ESE
1
E
0.8
E
0.7
ESE
0.5
E
0.5
E
0.4
ESE
0.6
ESE
0.6
ESE
0.7
ESE
0.7
ESE
1.1
SE
1.1
SE
1.1
SE
1.3
SE
1.1
SE
1.3
SE
2
SE
1.8
SE
2
SE
1.9
SE
1.7
SE
1.9
SE
1.9
SE
2.4
SE
3.5
SE
3.5
SE
3.5
SE
3.5
SSE
3
SSE
2.2
SSE
Period(s) (?)1010109910109899111110101010988888891010101112131313131212
Wave
Graph
(?)Metric surfscale
Energy (?)22821121416215823728315710784951031571421241132401771882642032344904388376585678398621768342542064248344723601390
Wind
(km/h)
10
ESE
15
ESE
10
SE
5
ESE
15
SE
5
S
10
SSE
15
SSE
15
S
15
S
20
S
15
S
10
SSE
20
SSE
15
S
10
S
20
S
15
S
15
SSE
15
SSE
20
SSE
20
SE
20
SSE
15
SE
20
E
25
ESE
35
ESE
40
ESE
50
ESE
60
SE
60
SE
60
SSE
45
SSE
45
SSE
45
SSE
35
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
oncross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
onononononcross-
on
cross-
on
onononononcross-
on
cross-
on
ononon
High Tide
/ height (m)
2:47PM
1.01
11:50PM
1.24
3:40PM
1.09
12:44AM
1.27
4:20PM
1.17
1:35AM
1.31
4:54PM
1.23
2:22AM
1.35
5:26PM
1.27
3:06AM
1.40
5:57PM
1.29
3:48AM
1.44
6:26PM
1.29
4:31AM
1.45
6:54PM
1.29
5:16AM
1.44
7:20PM
1.29
6:03AM
1.39
7:44PM
1.28
6:56AM
1.30
8:08PM
1.29
7:57AM
1.19
8:33PM
1.30
Low Tide
/ height (m)
6:01PM
0.95
8:00AM
0.32
7:27PM
0.99
8:42AM
0.23
8:31PM
1.00
9:21AM
0.15
9:20PM
1.00
9:59AM
0.08
10:00PM
0.98
10:37AM
0.04
10:38PM
0.96
11:13AM
0.03
11:14PM
0.92
11:50AM
0.06
11:53PM
0.87
12:25PM
0.13
12:34AM
0.80
1:00PM
0.24
1:21AM
0.72
1:34PM
0.39
2:14AM
0.64
2:07PM
0.56
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Sunrise4:26--4:26--4:26--4:28--4:28--4:28--4:28--4:30--4:31--4:31--4:31--4:33--
Sunset-6:55--6:55--6:54--6:54--6:54--6:53--6:53--6:53--6:52--6:52--6:52--6:52-
part cloudclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearclearrain showersclearclearthunderstorm thunderstorm thunderstorm thunderstorm mod rainheavy rainheavy rainthunderstorm thunderstorm thunderstorm part cloudpart cloudclear
Rain (mm)
--------------------1--1410167214023212---
Temp. °C282827282827272726272726272726272726272726272726272726262627272727282827
Feels °C (?)313031323031292828302829302929312929303029292928292926242223212225252626

Short Range Forecast: Mostly dry. Warm (max 28°C on Sun morning, min 26°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Wed morning, min 25°C on Wed night). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 32mm), heaviest during Mon afternoon. Warm (max 27°C on Sat morning, min 26°C on Sat night). Winds increasing (light winds from the SE on Sun night, fresh winds from the ESE by Mon night).

Long Range Forecast: Heavy rain (total 105mm), heaviest during Tue night. Warm (max 28°C on Thu morning, min 26°C on Tue morning). Winds decreasing (gales from the SSE on Wed morning, moderate winds from the SE by Thu night).

  • Map Icons:
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  • 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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