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Surf Forecasts:

Kuminatu surfForecast / Chiba / Japan

information circle48hr Weather and Surf, issued 2 pm Monday 12 Jan 2026 JST
Forecast update in hr  min  s Forecast update imminent
Kuminatu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kuminatu sea temperature is
17.6° C
 (Which is normal for this time of year)

How big are the waves at Kuminatu today?

The current surf forecast for Kuminatu at 10PM is: 1.8m 8s primary swell from a Southwest direction and 0.2m 14s secondary swell from a East-northeast direction (forecast issued at 02:00pm January 12). The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (12 Jan)--
Afternoon (12 Jan)3.5ft (1.1m)10s
Evening (12 Jan)5ft (1.5m)8s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM
Rating
(10 max)
2
2
1
0
0
0
0
0
0
0
0
0
0
!
4
3
2
2
2
2
1
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
SW
1.1
SW
1.1
SW
1.5
SW
2.2
SW
2.1
SW
2.2
SW
2.3
SW
2.5
SW
3
SW
3
SW
3
SW
3
SW
3
SW
2.5
SW
2
SW
1.6
SW
1.3
SW
1.2
SW
1.2
SW
1.1
SW
0.9
SW
0.8
SW
0.6
SW
Period(s) (?)10109887777789910101099999998
Wave
Graph
(?)Metric surfscale
Energy kJ (?)309204179289650465460471576817108214151647167912357274233072412411881329157
Wind
(km/h)
5
S
5
S
5
S
25
WSW
30
WSW
40
WSW
40
WSW
45
SW
50
SW
55
WSW
55
WSW
55
WSW
50
WSW
40
W
15
WNW
10
N
10
NNE
5
NE
5
E
5
ESE
10
ENE
20
N
15
N
10
NW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglassoncrosscrosscrosscrosscrosscrosscrosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		glassglassglasscrosscross-
off		offoff
High Tide
/ height (m)
10:18AM
1.24
2:18AM
0.95
11:08AM
1.21
3:48AM
1.05
12:21PM
1.19
4:28AM
1.14
Low Tide
/ height (m)
6:25PM
0.50
4:44AM
0.93
7:37PM
0.39
6:47AM
1.01
8:34PM
0.28
8:36AM
1.01
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Sunrise-------6:47-------6:47-------6:47
Sunset-4:45-------4:46-------4:47------
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
cloud
cloud
part cloud
cloud
Rain (mm)
------------------------
Temp. °C776777101113141311987799888766
Feels °C (?)4430-1-301331-2-3-22245554101
  • 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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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 Kuminatu 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.

View detailed surf forecast for Kuminatu at:
surf-forecast.com

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