Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 pm 08 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
23.8° C
1.8° 

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 (09 Jul):

  • Morning surf: Morning surf (09 Jul, local time) - 7ft (2.2m), 14s period with SSE swell.
  • Afternoon surf: Afternoon surf (09 Jul, local time) - 8ft (2.4m), 14s period with SSE swell.
  • Evening surf: Evening surf (09 Jul, local time) - 8ft (2.5m), 14s period with S swell.

The current surf forecast for Katahama at 1AM is: 2.3m 15s primary swell from a South-southeast direction and 0.7m 8s secondary swell from a East direction (forecast issued at 08:00pm July 08). The wind direction is predicted to be glassy and the swell rating is 4.

Time (JST) & DateWave HeightWave Period
Morning (09 Jul)7ft (2.2m)14s
Afternoon (09 Jul)8ft (2.4m)14s
Evening (09 Jul)8ft (2.5m)14s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Fri afternoon, min 22°C on Wed night). Wind will be generally light.

Wed
8
Thursday
9
Friday
10
Saturday
11
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
12 PM
3 PM
Rating
(10 max)
4
4
4
4
4
4
3
2
3
4
5
4
4
4
!
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
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
SSE
16
2.2
SSE
15
2.3
SSE
15
2.2
SSE
14
2.3
SSE
14
2.2
SSE
14
2.3
SSE
14
2.4
SSE
14
2.5
SSE
14
2.5
S
14
2.5
S
15
2.5
S
15
2.5
S
15
2.5
S
15
3
S
17
0.6
E
10
0.4
ESE
8
0.4
E
10
0.4
E
10
0.4
E
10
4
S
17
4
S
17
4
SSW
17
4
SSW
17
Wave Graph
Metric surfscale
Energy kJ
2354
2208
2261
1887
2136
1937
2114
2265
2410
2643
2972
2942
2863
2629
5803
67
21
30
30
30
0
0
0
0
Wind (km/h)
5
SSE
0
ENE
0
NNE
5
WNW
5
WNW
5
SSE
10
SSE
10
SSE
10
SSW
0
SW
0
W
5
W
5
NW
5
ESE
10
S
15
SSW
10
SSW
5
SW
5
WNW
5
NW
5
NW
5
SW
15
SSW
20
SW
Wind State
glassy
glassy
glassy
glassy
glassy
glassy
on
cross-on
cross-on
glassy
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
glassy
glassy
glassy
glassy
cross
cross
cross
High Tide
00:05AM1.49m
2:47PM1.23m
1:05AM1.48m
4:01PM1.32m
2:02AM1.49m
Low Tide
5:29PM0.97m
7:38AM0.57m
6:53PM1.09m
8:44AM0.47m
8:28PM1.15m
9:36AM0.37m
part cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:41
4:41
4:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:02
7:01
7:01
 mm
Temp °C
24
23
23
22
22
24
25
25
25
24
24
23
22
25
25
26
25
25
24
23
23
25
26
26
Feels °C
26
26
26
25
25
27
27
26
27
28
28
26
25
28
26
27
27
29
28
26
26
28
27
26
  • 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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