Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 2 am 03 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 5AM is: 1.6m 16s primary swell from a Southeast direction and 0.2m 15s secondary swell from a East direction, 1.3m 6s secondary swell from a East direction (forecast issued at 02:00am August 03). 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

Mostly dry. Warm (max 29°C on Tue afternoon, min 24°C on Mon night). Mainly fresh winds.

Monday
3
Tuesday
4
Wednesday
5
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
6 PM
9 PM
Rating
(10 max)
1
2
2
2
2
2
2
2
1
2
!
3
!
!
!
!
!
!
!
!
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)
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
17
2.1
SE
16
2.1
SE
16
2.3
SE
16
3
ESE
16
2.5
SE
17
3
ESE
16
3
SE
16
4
ESE
16
3
SE
16
4.5
ESE
16
4
SE
16
4
SE
16
4
SE
16
4
SE
16
4.5
SE
16
4.5
SE
16
4.5
SE
16
Wave Graph
Metric surfscale
Energy kJ
860
1101
1224
1467
1737
2033
2475
2357
2357
2643
4121
3579
4590
4076
7695
3876
10633
7595
7806
8666
9070
9341
9245
9899
Wind (km/h)
15
NE
20
NE
20
NE
20
NE
20
ENE
25
NE
20
ENE
25
ENE
25
ENE
25
NE
25
NE
25
NE
20
ENE
20
E
20
ENE
25
ENE
30
NE
25
NE
25
NE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
Wind State
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
High Tide
8:06AM1.52m
8:36PM1.69m
8:59AM1.40m
9:11PM1.64m
10:09AM1.28m
Low Tide
2:20AM0.66m
2:14PM0.59m
3:10AM0.65m
2:49PM0.75m
4:08AM0.65m
3:28PM0.92m
rain showers
rain showers
part cloud
cloud
part cloud
part cloud
clear
clear
clear
part cloud
cloud
cloud
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>
4:56
4:58
4:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:47
6:46
6:45
 mm
3
1
Temp °C
25
26
25
26
27
28
27
25
25
24
24
24
27
29
28
26
25
25
24
27
28
29
28
27
Feels °C
27
28
26
27
28
28
27
24
23
22
22
22
25
28
27
24
22
23
22
25
26
28
26
25
  • 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