Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 2 pm 14 Oct 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
24.4°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 (14 Oct):

  • Afternoon surf: Afternoon surf (14 Oct, local time) - 3.5ft (1.0m), 10s period with E swell.
  • Evening surf: Evening surf (14 Oct, local time) - 3ft (0.9m), 10s period with E swell.

The current surf forecast for Katahama at 9PM is: 0.9m 10s primary swell from a East direction (forecast issued at 02:00pm October 14). An open ocean swell of 1.5m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (14 Oct)--
Afternoon (14 Oct)3.5ft (1.0m)10s
Evening (14 Oct)3ft (0.9m)10s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Wed afternoon, min 18°C on Thu night). Winds decreasing (fresh winds from the W on Wed afternoon, calm by Fri morning).

Wed
14
Thursday
15
Friday
16
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
0
1
0
0
0
0
1
1
1
2
1
1
1
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)
1
ESE
10
1
E
10
1
E
10
0.9
E
10
0.7
E
10
1
E
10
0.6
E
10
1.5
E
6
1.5
E
8
1.5
E
8
1.5
E
9
1.5
E
9
1.3
E
8
1
E
8
0.9
ESE
8
0.7
ESE
6
0.5
ESE
6
0.4
ESE
6
0.5
ESE
8
0.5
E
8
Wave Graph
Metric surfscale
Energy kJ
205
192
184
145
92
181
65
164
255
305
328
335
245
137
109
40
23
14
35
29
Wind (km/h)
20
WSW
30
W
30
W
25
WNW
10
NNW
20
ESE
15
ENE
15
NE
10
E
10
SE
10
ESE
5
NE
10
NNE
10
NNW
5
NNW
0
NNW
10
SSW
5
SSW
10
NNE
10
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
off
on
cross
cross
cross-on
on
on
cross
cross-off
cross-off
off
glassy
cross
cross-on
cross-off
cross-off
High Tide
6:27PM1.76m
7:56AM1.54m
6:59PM1.70m
8:51AM1.45m
7:35PM1.59m
Low Tide
12:37PM0.90m
1:20AM0.29m
1:12PM0.98m
2:04AM0.35m
1:55PM1.08m
thunderstorm
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
cloud
part cloud
part cloud
clear
clear
part cloud
cloud
part cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
—
5:50
—
—
—
—
—
—
—
5:52
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
5:15
—
—
—
—
—
—
—
5:13
—
—
—
—
—
—
—
5:12
—
—
 mm
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
24
26
23
20
19
21
20
20
22
21
20
20
19
19
18
19
22
24
22
21
Feels °C
23
22
18
17
18
19
18
18
21
21
20
21
19
19
18
20
21
23
21
20
  • 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