Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 pm 22 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
26.8° C
0.2° 

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 Jul):

  • Morning surf: Morning surf (23 Jul, local time) - 1.5ft (0.4m), 10s period with E swell.
  • Afternoon surf: Afternoon surf (23 Jul, local time) - 1.5ft (0.4m), 10s period with E swell.
  • Evening surf: Evening surf (23 Jul, local time) - 1.5ft (0.4m), 10s period with E swell.

The current surf forecast for Katahama at 4AM is: 0.4m 10s primary swell from a East direction and 0.1m 11s secondary swell from a Southeast direction (forecast issued at 08:00pm July 22). An open ocean swell of 1.4m 6s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (23 Jul)1.5ft (0.4m)10s
Afternoon (23 Jul)1.5ft (0.4m)10s
Evening (23 Jul)1.5ft (0.4m)10s

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


Short Range Forecast

Mostly dry. Warm (max 31°C on Thu morning, min 27°C on Wed night). Wind will be generally light.

Wed
22
Thursday
23
Friday
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
1
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
Wave
Height (m)
Direction
Period (s)
1.4
SW
5
1.4
SW
6
0.5
E
10
0.4
E
10
0.4
E
10
0.4
E
10
0.4
E
10
0.4
E
10
0.4
E
10
0.4
E
10
0.4
E
9
0.4
E
9
0.4
E
9
0.4
E
9
0.3
E
9
0.3
SE
11
0.4
SE
11
0.4
SE
11
Wave Graph
Metric surfscale
Energy kJ
106
119
50
32
31
31
31
30
30
29
28
27
27
27
15
18
30
41
Wind (km/h)
25
WSW
15
WSW
15
WSW
5
WNW
5
N
5
ESE
10
SSE
15
S
10
SSW
0
SSE
10
ENE
10
ENE
5
NE
10
ESE
20
SE
15
SSE
10
SE
5
SSE
Wind State
cross-off
cross-off
cross-off
off
glassy
glassy
on
cross-on
cross
glassy
cross-on
cross-on
cross
on
on
on
on
on
High Tide
10:54PM1.52m
1:49PM1.20m
11:58PM1.48m
3:37PM1.30m
Low Tide
4:21PM0.95m
6:32AM0.63m
5:31PM1.11m
7:55AM0.56m
7:29PM1.21m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:48
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:57
6:55
6:55
 mm
Temp °C
30
28
28
27
27
30
31
31
30
29
28
27
27
29
29
29
28
28
Feels °C
31
31
32
32
32
35
35
34
34
35
33
31
32
33
32
33
32
34
  • 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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