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Surf Forecasts:

Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 am Friday 20 Mar 2026 JST
Forecast update in hr  min  s Forecast update imminent
Katahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Katahama sea temperature is
14.9° C
 (Which is 2.7°C colder than average for this time of year)

How big are the waves at Katahama today?

The current surf forecast for Katahama at 3PM is: 0.4m 12s primary swell from a East direction and 0.7m 6s secondary swell from a East direction (forecast issued at 08:00am March 20). An open ocean swell of 0.8m 7s is not directed at the surf break, a second open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (20 Mar)--
Afternoon (20 Mar)1.5ft (0.4m)12s
Evening (20 Mar)1.5ft (0.4m)12s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Friday
20
Saturday
21
Sunday
22
Mon
23
6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM0 AM3 AM
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
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
SSW
0.8
SSW
0.4
E
0.4
E
0.4
E
0.4
E
0.3
E
0.3
E
0.3
E
0.3
E
0.3
E
0.3
E
0.3
E
0.3
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
0.2
E
Period(s) (?)7713121212121212121212121313131212121212121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)0050484848272727272728282813121211111111111111
Wind
(km/h)
10
NW
5
ENE
15
SSW
25
WSW
35
WNW
35
WNW
30
WNW
25
WNW
15
NW
5
NW
15
SSE
15
SSE
10
SE
5
E
10
NNW
10
NW
5
NW
0
SW
15
SW
20
SW
20
WSW
15
WSW
10
WNW
10
WNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offglasscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offglassonononglassoffoffoffglasscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
6:00AM
1.55
6:31PM
1.47
6:25AM
1.57
7:09PM
1.42
6:53AM
1.55
7:52PM
1.33
Low Tide
/ height (m)
12:22PM
0.21
12:25AM
0.42
12:55PM
0.16
12:53AM
0.52
1:33PM
0.16
1:23AM
0.63
Friday
20
Saturday
21
Sunday
22
Mon
23
Sunrise5:52-------5:50-------5:48-------
Sunset---5:57-------5:58-------5:59----
clear
part cloud
cloud
cloud
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C12131316141110761011121212119810131413121211
Feels °C (?)1012109522017689109658788787
  • 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 Katahama 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 Katahama at:
surf-forecast.com

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