Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 pm 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
27.3° C
0.1° 

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 (03 Aug):

  • Morning surf: Morning surf (03 Aug, local time) - 5.5ft (1.7m), 16s period with SE swell.
  • Afternoon surf: Afternoon surf (03 Aug, local time) - 6.5ft (2.0m), 16s period with SE swell.
  • Evening surf: Evening surf (03 Aug, local time) - 7ft (2.1m), 16s period with SE swell.

The current surf forecast for Katahama at 3AM is: 1.5m 16s primary swell from a Southeast direction and 0.2m 15s secondary swell from a East direction, 1.2m 6s secondary swell from a East direction (forecast issued at 08:00pm August 02). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (03 Aug)5.5ft (1.7m)16s
Afternoon (03 Aug)6.5ft (2.0m)16s
Evening (03 Aug)7ft (2.1m)16s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Sun night. Warm (max 29°C on Tue afternoon, min 24°C on Mon night). Mainly fresh winds.

Sun
2
Monday
3
Tuesday
4
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
1
1
2
2
2
2
1
3
1
1
2
3
3
3
!
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
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
2.5
ESE
17
2.1
SE
16
2.1
SE
16
2.3
SE
16
2.3
SE
16
2.5
SE
16
2.5
SE
17
3
SE
16
3.5
ESE
16
3.5
ESE
16
Wave Graph
Metric surfscale
Energy kJ
740
894
860
1101
1224
1467
1737
2033
3393
2357
2357
2643
2756
3214
3959
4281
6489
5658
Wind (km/h)
20
SE
15
E
20
NE
20
NE
20
NE
20
NE
15
NE
15
ENE
25
NE
25
ENE
25
ENE
25
NE
25
NE
25
NE
20
ENE
15
ENE
20
ENE
25
ENE
Wind State
on
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross
High Tide
8:03PM1.72m
8:06AM1.52m
8:36PM1.69m
8:59AM1.40m
Low Tide
2:20AM0.66m
2:14PM0.59m
3:10AM0.65m
2:49PM0.75m
clear
thunderstorm
rain showers
part cloud
cloud
cloud
cloud
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:49
6:47
6:46
 mm
1
3
Temp °C
28
26
25
25
25
25
26
28
27
25
24
24
24
25
27
29
28
26
Feels °C
30
29
27
26
26
26
27
29
27
23
22
22
22
23
25
29
27
24
  • 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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