Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 2 pm 28 Aug 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
27.6°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 (28 Aug):

  • Afternoon surf: Afternoon surf (28 Aug, local time) - 1.5ft (0.5m), 12s period with E swell.
  • Evening surf: Evening surf (28 Aug, local time) - 4.5ft (1.3m), 6s period with SW swell.

The current surf forecast for Katahama at 8PM is: 1.3m 6s primary swell from a Southwest direction and 0.5m 8s secondary swell from a South direction, 0.4m 12s secondary swell from a East direction (forecast issued at 02:00pm August 28). The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (28 Aug)--
Afternoon (28 Aug)1.5ft (0.5m)12s
Evening (28 Aug)4.5ft (1.3m)6s

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


Short Range Forecast

Mostly dry. Warm (max 28°C on Fri afternoon, min 24°C on Sat night). Wind will be generally light.

Fri
28
Saturday
29
Sunday
30
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
0
0
1
0
0
0
1
0
0
0
0
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
Wave
Height (m)
Direction
Period (s)
0.8
S
8
0.5
E
12
0.5
E
12
1.3
SW
6
0.4
E
12
0.4
E
12
0.4
E
12
0.4
E
12
0.4
E
12
0.4
E
12
0.4
E
11
0.4
E
11
0.9
E
5
0.4
SE
10
0.3
E
11
0.6
E
6
0.5
E
6
0.4
E
6
0.4
E
6
0.3
E
6
Wave Graph
Metric surfscale
Energy kJ
84
74
71
111
44
44
43
42
42
42
41
39
34
27
21
25
17
11
10
6
Wind (km/h)
15
WSW
25
WSW
25
WSW
10
W
5
NW
5
NW
5
NNW
5
NNE
10
NE
10
E
10
ENE
15
ENE
15
NE
10
NE
5
ENE
5
ENE
5
ESE
10
SSE
10
SSE
5
ESE
Wind State
cross-off
cross-off
cross-off
cross-off
glassy
off
glassy
cross-off
cross
cross-on
cross-on
cross
cross
cross
cross
cross
glassy
on
on
glassy
High Tide
6:02PM1.73m
5:51AM1.72m
6:23PM1.76m
6:28AM1.72m
6:48PM1.79m
Low Tide
11:45AM0.41m
00:04AM0.69m
12:11PM0.45m
00:33AM0.59m
12:38PM0.51m
thunderstorm
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:16
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:20
6:17
6:16
 mm
1
Temp °C
26
28
27
27
27
26
26
26
26
27
25
24
24
24
24
24
25
25
25
25
Feels °C
29
29
28
31
32
30
30
30
29
31
28
26
26
26
27
27
28
28
28
29
  • 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