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Katagai surfForecast / Chiba / Japan

information circle12 Day Weather and Surf, issued 2 pm Thursday 03 Jul 2025 JST
Forecast update in hr  min  s Forecast update imminent
Katagai surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Katagai sea temperature is
24.6° C
 (Which is slightly warmer than usual)

Best Forecast Surf Conditions for Katagai this week:

The surf forecast for Katagai over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jul 05) at 6AM. The primary swell is predicted to be 1.3m and 10s period. The wind is predicted to be cross-shore as the swell arrives.

The most powerful waves expected at Katagai in the next 12 days are 1.4m 10s and forecast to arrive on Saturday (Jul 05) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sat 5th Jul)4.5ft (1.3m) 10s
Best Surf 3AM (Sun 6th Jul)3.5ft (1.1m) 9s
Most Powerful12AM (Sat 5th Jul)4.5ft (1.4m) 10s

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

Hourly12 Days
Chiba Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Thu
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tue
15
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
1
0
1
1
0
2
0
0
2
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.6
SE
0.6
SE
1.2
SE
1.3
SE
1.4
SE
1.3
SE
1.3
SE
1.1
SE
1.2
SE
1.3
ESE
1.3
ESE
1.2
ESE
1.3
ESE
1.3
ESE
1.2
ESE
1.2
ESE
0.9
ESE
0.7
ESE
0.6
E
0.6
ESE
0.7
ESE
0.5
SE
0.5
E
0.7
ESE
0.7
ESE
0.8
ESE
1
ESE
1.2
ESE
1.4
ESE
1.3
ESE
1.1
ESE
1.2
ESE
1
E
1.3
ESE
1.3
ESE
1.6
SE
Period(s) (?)109101010910999101010111110989911119101010121111111099101011
Wave
Graph
(?)Metric surfscale
Energy (?)95147284336393314351219397443329271323390341307180111105101114158130129181162315350481410304302235412373641
Wind
(km/h)
20
SSE
10
S
10
SSE
20
S
10
SSW
10
SSE
10
SE
5
ENE
15
ENE
15
E
5
E
10
E
15
ESE
10
NNE
20
NE
25
NE
20
N
10
NW
10
SSE
10
SSW
15
S
25
S
15
SSW
15
S
25
S
15
SSW
15
S
25
S
15
SSW
20
S
25
S
15
S
15
SSE
20
SSE
10
SSE
15
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		onglasscrosscross-
on		glasscross-
on		cross-
on		cross-
off		crosscrosscross-
off		offoncross-
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		cross-
on		cross-
on		on
High Tide
/ height (m)
9:46PM
1.25
11:28AM
0.95
10:21PM
1.25
1:38PM
1.00
11:03PM
1.26
3:04PM
1.09
11:52PM
1.28
3:52PM
1.17
12:44AM
1.30
4:28PM
1.23
1:35AM
1.34
5:00PM
1.27
2:23AM
1.38
5:30PM
1.30
3:08AM
1.42
5:59PM
1.31
3:51AM
1.44
6:27PM
1.31
4:34AM
1.44
6:54PM
1.31
5:18AM
1.40
7:20PM
1.31
6:04AM
1.34
Low Tide
/ height (m)
5:00AM
0.61
3:37PM
0.85
6:07AM
0.52
4:33PM
0.96
7:06AM
0.43
6:02PM
1.05
7:57AM
0.33
7:32PM
1.08
8:42AM
0.24
8:35PM
1.09
9:24AM
0.16
9:22PM
1.07
10:03AM
0.10
10:02PM
1.04
10:41AM
0.05
10:39PM
1.00
11:17AM
0.04
11:17PM
0.95
11:52AM
0.07
11:57PM
0.88
12:26PM
0.14
12:41AM
0.81
Thu
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tue
15
Sunrise--4:26--4:26--4:28--4:28--4:28--4:28--4:30--4:31--4:31--4:31--4:31--4:33
Sunset6:57--6:57--6:57--6:57--6:55--6:55--6:55--6:55--6:54--6:54--6:54--6:53--
clearclearclearclearpart cloudthunderstorm thunderstorm rain showersclearclearpart cloudclearclearclearclearclearrain showerspart cloudcloudclearclearclearclearclearclearclearclearclearclearclearclearclearpart cloudpart cloudclearpart cloud
Rain (mm)
-----132--------2-------------------
Temp. °C272527272527262628272627272528282629282729292629292629282629292627272627
Feels °C (?)262727272731303130293029292827272832313029292831302930282828282829282930

Short Range Forecast: Light rain (total 6mm), mostly falling on Sat afternoon. Warm (max 28°C on Sun morning, min 24°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Tue night. Warm (max 29°C on Wed morning, min 24°C on Mon night). Wind will be generally light.

Days 6-9 Weather Summary Mostly dry. Warm (max 29°C on Thu morning, min 25°C on Wed night). Wind will be generally light.

Long Range Forecast: Mostly dry. Warm (max 29°C on Sun morning, min 25°C on Sat night). Wind will be generally light.

  • 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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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Katagai 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 Katagai at:
surf-forecast.com

Information about the Katagai Surf forecast

The above surf forecast table for Katagai provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Katagai can be found by selecting the local surf guide option on the grey menu. Our Katagai 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 (Katagai) 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 Katagai 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.

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