Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 2 pm 01 Aug 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
27.2° C
0.0° 

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 (01 Aug):

  • Afternoon surf: Afternoon surf (01 Aug, local time) - 4.5ft (1.3m), 5s period with SW swell.
  • Evening surf: Evening surf (01 Aug, local time) - 1.5ft (0.5m), 16s period with SE swell.

The current surf forecast for Katahama at 7PM is: 0.5m 16s primary swell from a Southeast direction and 0.3m 11s secondary swell from a East direction, 1.1m 5s secondary swell from a Southwest direction (forecast issued at 02:00pm August 01). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (01 Aug)--
Afternoon (01 Aug)4.5ft (1.3m)5s
Evening (01 Aug)1.5ft (0.5m)16s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Sun night. Warm (max 33°C on Sat afternoon, min 24°C on Mon night). Wind will be generally light.

Sat
1
Sunday
2
Monday
3
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
2
2
2
2
2
3
2
1
0
1
1
2
2
2
2
2
2
3
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)
1
SW
6
1.3
SW
5
0.5
SE
16
0.5
SE
16
0.7
SE
16
0.6
SE
18
0.8
SE
15
1.1
SE
16
1.2
ESE
16
1.2
SE
15
1.3
ESE
15
1.4
SE
16
1.4
SE
15
1.5
SE
16
1.6
SE
16
1.7
SE
16
1.9
SE
16
2
SE
16
2.1
SE
16
2.3
SE
17
Wave Graph
Metric surfscale
Energy kJ
65
86
125
125
271
192
266
580
674
631
740
894
860
1101
1224
1467
1737
2008
2445
2947
Wind (km/h)
15
SW
20
SW
5
SW
5
N
10
NNE
5
NNE
5
NNE
5
E
10
SSE
15
S
15
SE
15
ENE
15
ENE
15
NE
15
NE
20
NE
20
NE
20
ENE
20
ENE
20
ENE
Wind State
cross
cross
cross-off
glassy
cross-off
glassy
glassy
glassy
on
cross-on
on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
7:32PM1.72m
7:20AM1.61m
8:03PM1.72m
8:06AM1.52m
8:36PM1.69m
Low Tide
1:07PM0.36m
1:38AM0.71m
1:40PM0.46m
2:20AM0.66m
2:14PM0.59m
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
thunderstorm
clear
rain showers
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:50
6:49
6:47
 mm
1
1
Temp °C
33
33
31
29
28
28
28
31
31
30
28
28
27
26
25
26
27
27
26
26
Feels °C
34
34
35
34
32
32
32
35
34
32
31
31
29
28
26
27
27
27
26
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.


Nearest locationNearest