Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 2 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 (08 Jul):

  • Afternoon surf: Afternoon surf (08 Jul, local time) - 7ft (2.1m), 16s period with SSE swell.
  • Evening surf: Evening surf (08 Jul, local time) - 7ft (2.2m), 15s period with SSE swell.

The current surf forecast for Katahama at 7PM is: 2.2m 16s primary swell from a South-southeast direction and 0.7m 8s secondary swell from a East-southeast direction (forecast issued at 02:00pm July 08). The wind direction is predicted to be glassy and the swell rating is 4.

Time (JST) & DateWave HeightWave Period
Morning (08 Jul)--
Afternoon (08 Jul)7ft (2.1m)16s
Evening (08 Jul)7ft (2.2m)15s

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
Sat
11
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)
2
2
4
4
4
4
4
4
2
2
3
4
4
4
4
4
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
Height Map
Wave
Height (m)
Direction
Period (s)
2
SSE
15
2.1
SSE
16
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
0.5
E
8
0.5
E
10
0.4
E
8
0.4
E
10
0.4
E
10
0.4
E
10
4
S
17
4
S
17
Wave Graph
Metric surfscale
Energy kJ
1835
2136
2354
2208
2261
1887
2136
1937
2114
2265
2410
2643
2753
2902
2650
2881
33
47
20
30
30
30
0
0
Wind (km/h)
15
SSE
10
SSE
5
SSE
0
NE
0
N
5
NW
5
NW
5
SSE
10
SSE
15
S
10
SSW
5
SSW
0
W
5
WNW
0
NNW
5
SSE
15
S
15
SSW
10
SSW
5
SW
5
W
5
NW
5
NW
5
SSW
Wind State
on
on
glassy
glassy
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
glassy
glassy
glassy
glassy
glassy
cross-on
cross
cross-on
glassy
glassy
glassy
glassy
glassy
High Tide
12:53PM1.16m
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
part cloud
part cloud
part cloud
clear
clear
clear
clear
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
24
24
23
23
22
22
24
25
25
25
24
23
23
22
24
25
26
25
24
23
23
22
25
Feels °C
25
24
26
26
26
25
24
26
26
26
27
27
27
26
25
27
26
27
27
27
26
26
25
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 

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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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