Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 am 23 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 1PM is: 0.4m 10s primary swell from a East direction (forecast issued at 08:00am July 23). An open ocean swell of 0.8m 5s is not directed at the surf break. The wind direction is predicted to be onshore.

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 26°C on Sat night). Wind will be generally light.

Thursday
23
Friday
24
Saturday
25
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)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
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
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
SE
11
0.3
SE
11
0.4
SE
11
0.4
SE
11
0.3
SE
16
0.3
SE
16
0.3
SE
16
0.3
SE
16
0.3
SE
16
0.3
SE
16
0.3
SE
16
0.3
SE
15
Wave Graph
Metric surfscale
Energy kJ
31
31
31
30
30
29
28
27
27
27
19
18
30
30
41
41
41
41
40
40
39
37
Wind (km/h)
5
N
5
E
10
SSE
15
S
10
SSW
5
SE
10
ENE
10
ENE
5
NE
10
ESE
15
SE
15
SSE
10
SE
5
SE
0
E
0
ENE
0
NNW
5
SSE
15
S
15
SSE
10
SE
5
SSE
Wind State
glassy
glassy
on
cross-on
cross
glassy
cross-on
cross-on
cross
on
on
on
on
glassy
glassy
glassy
glassy
cross-on
cross-on
on
on
glassy
High Tide
1:49PM1.20m
11:58PM1.48m
3:37PM1.30m
1:13AM1.46m
4:33PM1.40m
Low Tide
6:32AM0.63m
5:31PM1.11m
7:55AM0.56m
7:29PM1.21m
9:03AM0.46m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:48
4:50
4:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:55
6:55
6:54
 mm
Temp °C
27
30
31
31
30
29
28
27
27
29
29
29
28
28
27
27
27
29
29
29
29
28
Feels °C
32
35
35
34
34
35
33
32
32
33
32
33
32
34
33
33
33
34
32
32
34
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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