Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 2 pm 14 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
25.2° C
1.0° 

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 (14 Jul):

  • Afternoon surf: Afternoon surf (14 Jul, local time) - 1ft (0.3m), 12s period with SE swell.
  • Evening surf: Evening surf (14 Jul, local time) - 1ft (0.3m), 10s period with E swell.

The current surf forecast for Katahama at 7PM is: 0.3m 11s primary swell from a Southeast direction and 0.3m 10s secondary swell from a East direction (forecast issued at 02:00pm July 14). An open ocean swell of 1.2m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (14 Jul)--
Afternoon (14 Jul)1ft (0.3m)12s
Evening (14 Jul)1ft (0.3m)10s

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


Short Range Forecast

Mostly dry. Warm (max 31°C on Wed afternoon, min 26°C on Tue night). Wind will be generally light.

Tue
14
Wednesday
15
Thursday
16
Fri
17
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
12 AM
3 AM
6 AM
9 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
1
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SE
12
0.3
SE
12
0.3
SE
12
0.3
E
10
0.3
E
10
0.3
E
10
0.3
ESE
10
0.3
SE
11
0.4
ESE
10
0.4
ESE
10
0.4
ESE
9
0.4
ESE
9
0.4
ESE
9
0.3
SE
11
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.6
E
8
0.6
E
8
0.6
E
8
0.6
E
9
0.6
E
9
Wave Graph
Metric surfscale
Energy kJ
22
22
21
17
17
17
18
18
30
31
29
28
27
18
41
38
36
38
38
51
52
52
54
59
Wind (km/h)
10
SSE
15
SE
10
ESE
5
E
10
NE
5
N
5
NNW
5
SSW
15
SSW
25
SW
25
WSW
20
WSW
20
WSW
10
WSW
5
WNW
0
SE
10
SSE
10
S
10
SSE
5
SSE
5
E
5
NE
10
ENE
10
SE
Wind State
cross-on
on
on
cross-on
cross
glassy
glassy
glassy
cross
cross
cross-off
cross-off
cross-off
cross-off
glassy
glassy
cross-on
cross-on
cross-on
glassy
glassy
cross
cross
on
High Tide
6:17PM1.57m
4:56AM1.63m
6:42PM1.61m
5:36AM1.65m
7:09PM1.64m
6:18AM1.64m
Low Tide
11:26AM0.20m
11:42PM1.04m
11:58AM0.19m
00:15AM0.97m
12:30PM0.21m
00:51AM0.89m
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:43
4:45
4:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:00
7:00
7:00
7:00
 mm
Temp °C
30
29
28
27
26
26
26
29
30
31
29
28
28
27
27
29
30
31
29
28
27
27
27
29
Feels °C
32
30
31
31
29
30
30
33
32
31
29
30
30
30
32
35
34
35
33
33
32
31
31
33
  • 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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