Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 pm 23 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
22.9° C

1.0°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 (23 Jun):

  • Afternoon surf: Afternoon surf (23 Jun, local time) - 1.5ft (0.4m), 11s period with SE swell.
  • Evening surf: Evening surf (23 Jun, local time) - 1.5ft (0.4m), 10s period with SE swell.

The current surf forecast for Katahama at 7PM is: 0.4m 10s primary swell from a Southeast direction and 0.5m 4s secondary swell from a East direction (forecast issued at 02:00pm June 23). The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (23 Jun)--
Afternoon (23 Jun)1.5ft (0.4m)11s
Evening (23 Jun)1.5ft (0.4m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 67mm), heaviest during Thu morning. Warm (max 22°C on Wed morning, min 17°C on Thu morning). Winds increasing (calm on Tue night, fresh winds from the NE by Thu morning).

Tue
23
Wednesday
24
Thursday
25
Fri
26
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
12 AM
3 AM
6 AM
9 AM
Rating
(10 max)
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
Swell
Height Map
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
E
5
0.4
SE
11
0.4
SE
9
0.4
SE
10
0.5
E
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.5
SSW
14
0.6
SSW
13
0.7
SSW
16
0.4
SE
11
1.1
E
4
1.3
ENE
5
1.2
E
5
0.9
E
5
0.4
SE
10
1.7
SSW
14
0.4
SE
10
0.4
SE
12
Wave Graph
Metric surfscale
Energy kJ
46
43
23
27
45
37
37
38
41
41
41
41
0
0
0
40
43
77
71
42
26
0
27
34
Wind (km/h)
10
E
15
SSE
5
SE
0
SE
0
S
0
SSE
0
NE
5
ENE
10
SSE
15
S
10
S
0
SE
5
E
10
NE
20
NE
30
NE
30
NE
25
NE
20
NE
15
NE
10
ENE
10
ENE
10
NE
5
ENE
Wind State
cross-on
cross-on
on
glassy
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-on
glassy
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
glassy
High Tide
12:16PM1.14m
00:17AM1.48m
2:05PM1.18m
1:10AM1.48m
3:24PM1.27m
1:58AM1.49m
Low Tide
5:33PM0.83m
7:30AM0.60m
6:45PM0.95m
8:31AM0.49m
8:02PM1.03m
light rain
light rain
cloud
part cloud
cloud
part cloud
rain showers
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
mod rain
heavy rain
heavy rain
mod rain
light rain
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
4:35
4:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:02
7:04
7:04
 mm
1
1
1
5
8
19
14
9
2
1
2
2
1
Temp °C
21
20
21
21
21
21
21
22
22
22
22
21
21
21
19
18
17
18
18
19
19
19
20
21
Feels °C
22
20
22
23
24
24
24
24
23
22
24
24
23
22
18
14
13
16
17
19
20
20
22
24
Swell 1
Height (m)
Direction
Period (s)
0.4
SE
11
0.8
E
5
0.5
E
4
0.4
ESE
4
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
SSW
14
0.6
SSW
13
0.7
SSW
16
0.9
SSW
15
1.3
SSW
14
1.3
SSW
13
1.5
SSW
14
1.4
SSW
8
1.6
SSW
14
1.7
SSW
14
1.7
SSW
14
1.8
SW
14
Energy kJ
43
28
9
5
45
50
50
50
51
51
50
46
105
111
212
334
603
634
814
226
1028
1080
1210
1303
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
6
0.4
SE
11
0.4
SE
9
0.4
SE
10
0.3
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SSW
10
0.5
S
10
0.4
SSW
17
0.6
SSW
12
0.8
SSW
12
0.4
SE
10
0.4
SE
10
0.9
SSW
7
1.3
SSW
14
1.5
SSW
7
1.6
SSW
7
1.4
SSW
7
0.4
SE
12
Energy kJ
9
43
23
27
15
37
37
38
41
41
41
33
49
108
99
158
37
36
68
638
225
225
186
34
Swell 3
Height (m)
Direction
Period (s)
0.2
W
4
0.4
SW
6
0.3
ENE
10
0.3
ENE
10
0.3
SE
12
0.3
SSW
5
0.2
S
5
0.3
SW
5
0.3
S
11
0.4
SSW
11
0.4
SSW
10
0.4
SE
11
0.4
ENE
9
0.4
ENE
9
0.5
S
9
0.4
SE
11
0.1
E
19
0.1
E
19
0.3
SE
10
0.9
SSW
12
0.4
SE
10
0.4
ENE
5
0.4
SE
10
0.2
ESE
18
Energy kJ
1
9
19
18
23
5
2
4
22
40
36
41
29
27
40
40
7
7
16
247
26
8
27
31
Wind waves
Height (m)
Direction
Period (s)
1
E
5
0.8
E
5
0.5
E
9
0.7
ENE
3
1.1
E
4
1.3
ENE
5
1.2
E
5
0.9
E
5
0.6
E
5
2.4
SSW
14
1.7
SSW
6
Energy kJ
46
27
39
11
43
77
71
42
19
2346
231
Nearest Offshore or Glassy
Rating
(10 max)
1
3
1
3
1
1
1
1
1
1
1
1
1
2
2
1
1
1
3
4
4
4
5
5
Distance (km)
94
236
104
236
6
161
94
161
104
104
104
2
2
13
13
124
103
103
13
13
13
65
13
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
1
2
2
3
4
4
4
5
5
Best forecast wave conditions in Japan
Rating
(10 max)
1
3
3
3
3
3
2
3
2
2
2
2
3
4
2
2
2
1
4
4
4
5
5
5
Header Global
Rating
(10 max)
5
5
5
5
5
5
7
8
9
9
8
9
8
7
6
5
5
5
5
5
8
4
4
5
  • 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
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