Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 am 24 Aug 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 (24 Aug):

  • Morning surf: Morning surf (24 Aug, local time) - 3.5ft (1.0m), 18s period with SSE swell.
  • Afternoon surf: Afternoon surf (24 Aug, local time) - 6ft (1.9m), 15s period with SSE swell.
  • Evening surf: Evening surf (24 Aug, local time) - 7ft (2.2m), 15s period with SSE swell.

The current surf forecast for Katahama at 11AM is: 1.5m 16s primary swell from a South-southeast direction (forecast issued at 08:00am August 24). An open ocean swell of 0.8m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (24 Aug)3.5ft (1.0m)18s
Afternoon (24 Aug)6ft (1.9m)15s
Evening (24 Aug)7ft (2.2m)15s

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


Short Range Forecast

Mostly dry. Warm (max 30°C on Wed morning, min 26°C on Mon night). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
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)
3
3
1
2
3
4
4
4
4
3
2
1
3
3
4
4
1
1
0
0
1
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)
0.9
SSE
16
1
SSE
18
1.7
SSE
16
1.9
SSE
15
1.3
SSE
18
2.2
SSE
15
2.3
SSE
15
2.3
SSE
14
2.3
SSE
13
2.2
SSE
13
2.2
SSE
13
2
S
12
2
S
12
1.9
S
12
1.9
S
12
1.9
S
12
0.6
E
13
0.6
E
13
0.5
E
12
0.8
SSE
9
1
S
9
0.8
SSE
9
Wave Graph
Metric surfscale
Energy kJ
452
644
1451
1698
1042
2237
2182
2167
1877
1630
1451
1194
1175
1010
997
986
121
119
78
103
159
92
Wind (km/h)
5
NNW
5
SW
15
SSW
20
SSW
15
SW
10
WSW
10
WSW
10
WSW
10
W
15
SW
20
SW
25
SW
20
WSW
15
WSW
15
WSW
5
WSW
10
W
10
SW
25
SW
25
SW
20
WSW
20
WSW
Wind State
glassy
glassy
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
High Tide
4:45PM1.55m
3:17AM1.50m
5:06PM1.61m
4:02AM1.57m
5:24PM1.65m
Low Tide
9:38AM0.47m
10:24PM1.11m
10:18AM0.41m
10:51PM1.01m
10:51AM0.39m
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:24
6:23
6:22
 mm
Temp °C
25
27
28
28
27
27
26
26
26
28
29
28
28
27
27
26
26
29
30
30
28
28
Feels °C
29
31
30
30
29
31
30
30
30
31
30
28
29
30
31
31
30
33
31
32
30
32
  • 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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