Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 2 pm 23 Sep 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
25.1°C
0.8° 

Katahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Katahama today (23 Sep):

  • Afternoon surf: Afternoon surf (23 Sep, local time) - 4ft (1.2m), 6s period with E swell.
  • Evening surf: Evening surf (23 Sep, local time) - 3.5ft (1.1m), 6s period with E swell.

The current surf forecast for Katahama at 11PM is: 1.0m 6s primary swell from a East direction and 0.3m 6s secondary swell from a South-southeast direction, 0.2m 10s secondary swell from a East direction (forecast issued at 02:00pm September 23). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (23 Sep)--
Afternoon (23 Sep)4ft (1.2m)6s
Evening (23 Sep)3.5ft (1.1m)6s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Warm (max 27°C on Thu afternoon, min 21°C on Sat morning). Wind will be generally light.

Wed
23
Thursday
24
Friday
25
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
E
6
1.2
E
6
1.3
E
6
1.1
E
6
0.9
E
6
0.9
ENE
5
0.6
E
6
0.5
E
6
0.4
ESE
5
0.4
ESE
5
0.2
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
9
0.3
E
10
Wave Graph
Metric surfscale
Energy kJ
75
96
110
77
49
46
22
15
10
9
7
14
14
14
14
14
14
15
15
17
Wind (km/h)
20
NE
25
NE
20
NE
15
NE
15
NE
5
NNE
5
WNW
5
SW
10
SSW
5
SSW
0
NNW
10
NNE
10
NE
10
ENE
10
NE
10
ENE
10
SE
15
SE
15
SE
15
ESE
Wind State
cross
cross
cross
cross
cross
cross-off
glassy
cross-off
cross
cross-on
glassy
cross-off
cross
cross
cross
cross-on
on
on
on
cross-on
High Tide
4:22PM1.63m
3:59AM1.56m
4:41PM1.67m
4:35AM1.63m
4:59PM1.70m
Low Tide
9:51AM0.54m
10:27PM0.84m
10:25AM0.54m
10:50PM0.72m
10:53AM0.55m
light rain
part cloud
clear
clear
part cloud
cloud
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
clear
part cloud
clear
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:35
5:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:44
5:42
5:40
 mm
1
Temp °C
22
23
22
22
22
22
22
24
26
27
25
24
24
23
23
24
25
24
24
23
Feels °C
22
22
21
22
23
24
24
26
27
29
29
26
26
25
25
26
26
24
25
23
  • 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
How to use the Wavefinder 

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.


Nearest locationNearest