Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 am 11 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
21.0° 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 (11 Jun):

  • Morning surf: Morning surf (11 Jun, local time) - 1.5ft (0.4m), 7s period with E swell.
  • Afternoon surf: Afternoon surf (11 Jun, local time) - 3ft (0.9m), 8s period with SSE swell.
  • Evening surf: Evening surf (11 Jun, local time) - 1ft (0.3m), 7s period with E swell.

The current surf forecast for Katahama at 7AM is: 0.5m 7s primary swell from a East direction (forecast issued at 02:00am June 11). An open ocean swell of 1.7m 9s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (11 Jun)1.5ft (0.4m)7s
Afternoon (11 Jun)3ft (0.9m)8s
Evening (11 Jun)1ft (0.3m)7s

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 Thu morning. Warm (max 23°C on Fri afternoon, min 19°C on Thu night). Wind will be generally light.

Thursday
11
Friday
12
Saturday
13
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
1
0
0
0
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
E
8
0.4
E
8
0.5
E
7
0.4
E
7
0.4
E
7
0.9
SSE
8
0.8
SSE
7
0.3
E
7
0.8
SSE
7
0.3
E
7
0.3
E
7
0.3
E
7
0.6
SSE
7
0.5
SSE
7
0.5
SSE
6
0.8
SSW
4
0.8
SSW
8
0.2
E
7
0.2
E
6
0.2
E
5
0.2
ESE
9
0.4
SSE
7
0.4
ESE
8
0.5
E
8
Wave Graph
Metric surfscale
Energy kJ
33
18
26
17
16
81
62
9
61
9
9
9
36
25
23
22
0
4
3
2
8
15
21
31
Wind (km/h)
5
SSW
10
SSE
5
SSE
10
SSE
15
S
15
S
10
SSW
5
WSW
5
WNW
5
NNW
5
N
5
SE
15
S
15
SSW
15
SW
10
W
5
NW
10
NNE
10
NE
10
E
10
SSE
15
S
5
S
0
WNW
Wind State
glassy
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-off
glassy
cross-off
cross-off
glassy
cross-on
cross-on
cross
cross-off
off
cross-off
cross
cross-on
on
cross-on
cross-on
glassy
High Tide
2:04AM1.48m
3:51PM1.30m
2:40AM1.51m
4:38PM1.37m
3:14AM1.53m
5:17PM1.42m
Low Tide
9:11AM0.41m
8:53PM0.95m
9:50AM0.30m
9:41PM1.00m
10:26AM0.22m
part cloud
rain showers
part cloud
cloud
light rain
light rain
cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
<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
7:00
7:00
 mm
1
1
1
Temp °C
20
20
20
21
21
22
22
21
20
19
19
21
22
23
23
22
21
19
19
21
22
23
23
22
Feels °C
22
21
21
21
20
22
23
22
21
20
20
22
21
22
22
22
22
19
19
21
22
23
24
24
Swell 1
Height (m)
Direction
Period (s)
1.5
SSW
9
1.6
SSW
9
1.7
SSW
9
1.7
SSW
9
1.7
SSW
9
1.4
SSW
9
1.3
SSW
9
1.4
SSW
9
1.1
SW
9
1.3
SSW
9
1.3
SSW
9
1.2
SSW
9
0.9
SSW
9
0.9
SW
9
0.5
SSE
6
0.6
SW
8
0.8
SSW
8
1
SSW
8
0.9
SSW
8
0.9
SSW
8
0.9
SSW
8
0.7
SW
8
0.6
SW
8
0.5
SW
8
Energy kJ
328
388
456
485
456
313
276
308
186
243
237
199
132
107
23
57
92
131
99
96
105
69
53
32
Swell 2
Height (m)
Direction
Period (s)
0.3
E
9
0.6
SSW
12
0.5
E
7
0.4
E
7
0.4
E
7
0.9
SSE
8
0.8
SSE
7
0.3
E
7
0.8
SSE
7
0.3
E
7
0.3
E
7
0.3
E
7
0.6
SSE
7
0.5
SSE
7
0.2
E
7
0.4
SSE
7
0.6
SW
4
0.2
E
7
0.4
SW
4
0.3
SW
4
0.2
E
5
0.4
SSE
7
0.4
ESE
8
0.5
E
8
Energy kJ
13
111
26
17
16
81
62
9
61
9
9
9
36
25
4
17
11
4
6
3
2
15
21
31
Swell 3
Height (m)
Direction
Period (s)
0.3
SSW
12
0.4
E
8
0.1
E
15
0.1
E
15
0.1
E
15
0.4
E
7
0.3
E
7
0.1
E
15
0.3
E
7
0.1
E
14
0.1
E
14
0.2
E
7
0.2
E
7
0.2
SSW
11
0.3
SSW
11
0.3
SSW
11
0.1
SE
9
0.2
E
6
0.2
E
5
0.2
ESE
9
0.3
ESE
8
0.4
SSE
7
0.4
S
7
Energy kJ
29
18
4
4
4
16
9
4
9
4
4
4
4
12
23
22
3
3
2
8
12
15
14
Wind waves
Height (m)
Direction
Period (s)
0.5
E
8
0.4
SSW
3
1.1
SW
8
0.8
SSW
4
Energy kJ
33
3
162
22
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
2
1
2
1
2
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
103
94
94
94
104
208
6
2
2
2
2
13
94
65
65
2
2
2
2
13
104
105
65
6
Best forecast wave conditions in Shizuoka
Rating
(10 max)
2
2
2
1
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
2
1
2
1
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
Header Global
Rating
(10 max)
7
8
9
8
7
5
7
7
6
6
6
6
6
7
7
8
8
8
7
6
5
5
5
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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