Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 am 10 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
20.9° C

2.1°C colder than average for this time of year

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 (10 Jun):

  • Morning surf: Morning surf (10 Jun, local time) - 1.5ft (0.4m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (10 Jun, local time) - 1ft (0.3m), 8s period with E swell.
  • Evening surf: Evening surf (10 Jun, local time) - 1.5ft (0.5m), 5s period with E swell.

The current surf forecast for Katahama at 7AM is: 0.4m 8s primary swell from a East direction (forecast issued at 02:00am June 10). An open ocean swell of 1.4m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (10 Jun)1.5ft (0.4m)8s
Afternoon (10 Jun)1ft (0.3m)8s
Evening (10 Jun)1.5ft (0.5m)5s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Fri night. Warm (max 22°C on Wed morning, min 18°C on Thu night). Wind will be generally light.

Wednesday
10
Thursday
11
Friday
12
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)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
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)
0.5
E
9
0.4
E
9
0.4
E
9
0.4
E
8
0.4
E
8
0.3
E
8
0.4
S
11
0.5
E
5
0.2
E
9
0.5
E
8
0.5
E
7
0.4
E
7
0.4
E
8
0.8
SSE
8
0.3
E
8
0.7
SSE
7
0.7
SSE
8
0.4
E
7
0.6
SSE
7
0.6
SSE
7
0.6
SSE
7
0.5
SSE
7
0.6
SSE
7
0.6
S
7
Wave Graph
Metric surfscale
Energy kJ
37
24
23
22
22
12
37
12
6
28
26
17
18
64
10
54
58
17
42
41
42
26
37
34
Wind (km/h)
20
SW
15
WSW
10
WSW
5
NE
10
SE
15
SSE
5
SSW
5
W
5
W
5
SSW
5
S
10
S
15
S
20
SSW
15
SSW
5
SW
5
WNW
5
N
5
NNE
5
E
15
S
15
S
10
SSW
5
W
Wind State
cross
cross-off
cross-off
glassy
on
cross-on
cross-on
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
cross-on
cross
glassy
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-off
High Tide
1:22AM1.46m
2:52PM1.22m
2:04AM1.48m
3:51PM1.30m
2:40AM1.51m
4:38PM1.37m
Low Tide
8:24AM0.53m
7:54PM0.89m
9:11AM0.41m
8:53PM0.95m
9:50AM0.30m
cloud
cloud
cloud
clear
clear
part cloud
cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
part cloud
cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
4:33
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:59
6:59
7:00
 mm
2
Temp °C
20
20
19
21
22
22
21
20
20
20
20
21
22
22
21
21
20
19
18
21
22
22
22
22
Feels °C
18
19
19
22
22
21
22
21
22
22
22
21
21
21
21
22
22
20
18
22
22
21
22
23
Swell 1
Height (m)
Direction
Period (s)
0.5
E
9
0.4
E
9
1.4
SW
8
1.3
SSW
8
1.2
SSW
8
1.2
SSW
8
1.2
SSW
8
1.3
SSW
8
1.4
SSW
9
1.4
SSW
9
1.6
SSW
9
1.6
SSW
9
1.6
SSW
9
1.3
SSW
9
1.5
SSW
9
1.1
SW
9
1.2
SW
9
1.3
SSW
9
1.1
SW
9
1
SW
9
0.9
SW
9
0.9
SW
8
0.8
SW
8
0.6
SW
8
Energy kJ
37
24
274
219
175
188
202
234
281
295
388
424
424
276
351
190
242
268
186
155
112
105
82
54
Swell 2
Height (m)
Direction
Period (s)
0.1
E
16
0.4
E
9
0.4
E
8
0.4
E
8
0.3
E
8
0.4
S
11
0.2
E
8
0.2
E
9
0.5
E
8
0.5
E
7
0.4
E
7
0.4
E
8
0.8
SSE
8
0.3
E
8
0.7
SSE
7
0.7
SSE
8
0.3
E
8
0.6
SSE
7
0.6
SSE
7
0.6
SSE
7
0.5
SSE
7
0.6
SSE
7
0.6
S
7
Energy kJ
5
23
22
22
12
37
5
6
28
26
17
18
64
10
54
58
10
42
41
42
26
37
34
Swell 3
Height (m)
Direction
Period (s)
0.1
E
16
0.1
E
16
0.1
E
16
0.3
ENE
8
0.4
SSW
12
0.1
E
15
0.1
E
15
0.1
E
15
0.4
E
8
0.1
E
15
0.4
SSW
12
0.3
E
8
0.4
E
7
0.3
E
7
0.4
E
7
0.3
E
7
0.3
E
7
0.3
E
7
0.3
E
7
Energy kJ
5
5
5
13
48
4
4
4
18
4
56
10
17
10
16
8
8
8
8
Wind waves
Height (m)
Direction
Period (s)
1.7
SSW
8
1.7
SSW
8
0.5
E
4
0.5
E
5
0.4
E
4
0.5
E
4
0.3
S
3
Energy kJ
423
374
9
12
6
10
1
Nearest Offshore or Glassy
Rating
(10 max)
1
3
1
2
1
1
1
1
1
1
2
2
1
1
2
1
1
1
1
2
1
1
1
1
Distance (km)
103
2
2
13
150
94
145
2
2
2
2
94
104
104
65
6
2
2
2
13
104
105
6
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
3
1
2
1
2
2
2
2
2
2
1
2
2
2
2
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
3
2
2
1
1
1
2
2
2
2
2
1
1
2
1
2
2
2
2
1
1
1
1
Header Global
Rating
(10 max)
5
6
5
5
5
5
6
8
7
8
9
8
7
6
7
6
6
5
5
7
5
5
6
7
  • 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