Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 pm 22 Sep 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
24.7°C
1.3° 

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):

  • Morning surf: Morning surf (23 Sep, local time) - 4.5ft (1.3m), 5s period with ENE swell.
  • 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 (1.0m), 6s period with E swell.

The current surf forecast for Katahama at 4AM is: 1.0m 4s primary swell from a East-northeast direction and 0.6m 7s secondary swell from a South direction, 0.2m 8s secondary swell from a South direction (forecast issued at 08:00pm September 22). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (23 Sep)4.5ft (1.3m)5s
Afternoon (23 Sep)4ft (1.2m)6s
Evening (23 Sep)3.5ft (1.0m)6s

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


Short Range Forecast

Some drizzle, heaviest during Tue night. Warm (max 26°C on Thu afternoon, min 22°C on Wed night). Wind will be generally light.

Tue
22
Wednesday
23
Thursday
24
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
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
Wave
Height (m)
Direction
Period (s)
0.9
SSE
8
0.8
SSE
8
0.7
SSE
8
0.6
SSE
7
1.2
ENE
5
1.3
ENE
5
1.3
E
6
1.2
E
6
1
E
6
1
E
6
0.8
E
6
0.7
E
6
0.6
E
6
0.5
E
6
0.5
E
6
0.4
ESE
6
0.4
ESE
6
0.2
E
9
Wave Graph
Metric surfscale
Energy kJ
94
79
58
43
57
94
106
91
62
62
39
29
22
16
16
10
10
6
Wind (km/h)
15
ESE
20
ENE
20
ENE
20
NE
25
NE
25
NE
20
NE
25
NE
20
NE
20
NE
15
NE
10
NE
5
N
5
SW
15
S
10
SSE
10
E
10
NE
Wind State
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
glassy
cross
cross-on
cross-on
cross-on
cross
High Tide
4:00PM1.58m
3:16AM1.47m
4:22PM1.63m
3:59AM1.56m
4:41PM1.67m
Low Tide
10:02PM0.97m
9:51AM0.54m
10:27PM0.84m
10:25AM0.54m
part cloud
rain showers
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
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
 mm
1
Temp °C
26
25
24
23
23
23
23
23
23
22
22
22
22
24
25
26
25
24
Feels °C
28
25
24
22
22
22
22
21
23
22
23
24
25
26
26
28
28
27
  • 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.


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