Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 am 26 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
27.2° C
0.3° 

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 (26 Jul):

  • Morning surf: Morning surf (26 Jul, local time) - 1ft (0.3m), 15s period with SE swell.
  • Afternoon surf: Afternoon surf (26 Jul, local time) - 1.5ft (0.4m), 14s period with SE swell.
  • Evening surf: Evening surf (26 Jul, local time) - 1.5ft (0.4m), 14s period with SE swell.

The current surf forecast for Katahama at 12PM is: 0.4m 15s primary swell from a Southeast direction and 0.4m 11s secondary swell from a Southeast direction (forecast issued at 08:00am July 26). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (26 Jul)1ft (0.3m)15s
Afternoon (26 Jul)1.5ft (0.4m)14s
Evening (26 Jul)1.5ft (0.4m)14s

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


Short Range Forecast

Moderate rain (total 17mm), heaviest on Mon night. Warm (max 29°C on Sun morning, min 24°C on Mon night). Wind will be generally light.

Sunday
26
Monday
27
Tuesday
28
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
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
1
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
1
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)
0.4
SE
15
0.3
SE
15
0.4
SE
15
0.4
SE
14
0.4
SE
14
0.4
SE
14
0.4
SE
14
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.3
SE
14
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.4
ESE
10
0.4
ESE
10
0.4
ESE
10
0.5
ESE
10
0.4
ESE
10
Wave Graph
Metric surfscale
Energy kJ
56
41
54
74
74
73
73
37
38
38
38
37
37
36
48
48
48
39
38
38
55
38
Wind (km/h)
5
SE
10
SSE
15
S
15
S
10
S
10
WSW
10
N
10
NNE
10
E
10
ESE
20
SSE
20
SE
10
SE
15
E
10
E
5
NE
5
ENE
5
ESE
10
SSE
10
SW
15
WSW
20
WSW
Wind State
glassy
cross-on
cross-on
cross-on
cross-on
cross-off
cross-off
cross-off
cross-on
on
on
on
on
cross-on
cross-on
cross
glassy
on
cross-on
cross
cross-off
cross-off
High Tide
5:08PM1.49m
3:12AM1.52m
5:34PM1.54m
3:57AM1.57m
5:56PM1.59m
Low Tide
9:53AM0.37m
10:20PM1.18m
10:33AM0.31m
10:57PM1.12m
11:06AM0.27m
clear
part cloud
clear
cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:52
4:52
4:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:53
6:52
 mm
1
1
9
3
1
1
1
Temp °C
26
28
29
29
29
29
27
26
26
27
27
27
27
25
25
24
24
26
27
28
27
27
Feels °C
31
32
32
32
33
33
32
30
30
31
29
28
30
28
29
28
28
30
30
31
30
28
  • 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