Katahama Surf Break
Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Weather Forecast for Katahama

Issued: 8 pm 08 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
20.9° C

2.0°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 (09 Jun):

  • Morning surf: Morning surf (09 Jun, local time) - 2.5ft (0.7m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (09 Jun, local time) - 2ft (0.6m), 9s period with E swell.
  • Evening surf: Evening surf (09 Jun, local time) - 2ft (0.6m), 9s period with E swell.

The current surf forecast for Katahama at 4AM is: 0.8m 8s primary swell from a East direction (forecast issued at 08:00pm June 08). An open ocean swell of 1.0m 9s is not directed at the surf break, a second open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (09 Jun)2.5ft (0.7m)8s
Afternoon (09 Jun)2ft (0.6m)9s
Evening (09 Jun)2ft (0.6m)9s

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 9mm), mostly falling on Mon night. Warm (max 22°C on Mon night, min 19°C on Wed night). Wind will be generally light.

Mon
8
Tuesday
9
Wednesday
10
Thursday
11
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
12 PM
3 PM
Rating
(10 max)
1
2
1
1
1
1
1
0
0
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)
1.1
SSE
8
1
S
8
0.9
E
8
0.8
E
8
0.7
E
8
0.7
E
8
0.6
E
8
0.6
E
9
0.6
E
9
0.6
E
9
0.6
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.4
E
8
0.7
E
4
0.7
E
4
0.7
E
5
0.8
E
6
0.8
E
6
0.7
E
5
1
E
5
0.7
E
6
0.8
ESE
6
Wave Graph
Metric surfscale
Energy kJ
171
116
104
84
66
68
51
52
52
53
50
43
30
30
19
13
15
24
39
40
28
59
33
50
Wind (km/h)
20
SW
15
WSW
10
WSW
5
W
5
WNW
5
WNW
10
WSW
10
SSW
10
SSW
5
SSE
5
ESE
5
NE
10
NNE
15
E
20
ESE
15
ENE
10
ENE
10
NE
10
NE
10
NE
10
NE
10
ENE
10
SE
15
SSE
Wind State
cross-off
cross-off
cross-off
glassy
cross-off
off
cross-off
cross
cross
on
on
glassy
cross-off
cross-on
on
cross-on
cross-on
cross
cross
cross
cross
cross
on
on
High Tide
00:32AM1.45m
1:33PM1.15m
1:22AM1.46m
2:52PM1.22m
2:04AM1.48m
Low Tide
5:36PM0.69m
7:26AM0.66m
6:46PM0.81m
8:24AM0.53m
7:54PM0.89m
9:11AM0.41m
part cloud
cloud
light rain
light rain
light rain
cloud
light rain
light rain
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
cloud
cloud
part cloud
part cloud
cloud
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>
6:58
6:58
6:59
6:59
 mm
3
2
1
2
1
Temp °C
22
22
21
21
20
21
20
20
21
20
20
20
20
21
21
22
21
20
20
19
19
21
22
22
Feels °C
21
23
23
24
22
23
21
20
22
22
22
22
21
21
20
21
21
20
20
19
19
21
22
21
Swell 1
Height (m)
Direction
Period (s)
1.3
SW
10
1.2
SW
10
1.1
SW
9
0.9
SW
9
1.1
SW
9
0.8
SW
8
0.9
SSW
8
1
SSW
8
1.3
SSW
8
1.5
SSW
8
1.6
SSW
8
1.6
SW
8
1.4
SSW
8
1.4
SSW
8
1.4
SSW
9
1.3
SSW
9
1.3
SSW
9
1.1
SSW
8
1
SW
8
0.9
SW
8
1.1
SSW
8
1
SSW
8
1
SSW
8
0.9
SSW
9
Energy kJ
341
262
188
132
193
82
103
116
234
309
360
338
261
267
300
264
233
173
135
102
164
150
150
129
Swell 2
Height (m)
Direction
Period (s)
1.1
SSE
8
1
S
8
0.9
E
8
0.8
E
8
0.7
E
8
0.7
E
8
0.6
E
8
0.6
E
9
0.6
E
9
0.6
E
9
0.6
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.4
E
8
0.5
E
8
0.2
WNW
4
0.4
SSE
6
0.3
SSE
6
0.3
SSE
6
0.7
E
5
0.7
E
6
0.4
SSE
7
0.4
SSE
7
Energy kJ
171
116
104
84
66
68
51
52
52
53
50
43
30
30
19
34
1
13
8
7
28
30
16
16
Swell 3
Height (m)
Direction
Period (s)
0.9
E
8
0.9
E
8
0.7
SSE
7
0.7
S
7
0.5
S
7
0.5
S
6
0.1
SE
9
0.4
SSW
9
0.1
SE
9
0.1
SE
9
0.1
E
16
0.4
WNW
4
0.3
W
4
0.2
WNW
4
0.2
E
9
0.3
SSW
11
0.1
E
15
0.4
SSE
7
0.1
E
15
0.4
SSW
12
Energy kJ
98
105
57
48
24
22
3
27
3
3
5
7
3
1
6
23
4
17
4
45
Wind waves
Height (m)
Direction
Period (s)
0.6
SW
3
0.8
SW
4
0.7
WSW
5
0.7
WSW
5
0.9
W
5
0.7
W
5
0.6
W
4
0.5
W
4
0.4
WNW
4
1.7
SW
8
0.8
WNW
4
0.6
WNW
4
0.7
E
4
0.7
E
4
0.7
E
5
0.8
E
6
0.8
E
6
1
E
5
0.7
E
6
0.8
ESE
6
Energy kJ
9
18
19
21
39
23
13
9
5
401
23
15
13
15
24
39
40
59
33
50
Nearest Offshore or Glassy
Rating
(10 max)
3
2
2
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
Distance (km)
65
2
2
2
2
2
2
6
6
104
6
6
2
13
94
150
124
104
13
2
2
13
13
104
Best forecast wave conditions in Shizuoka
Rating
(10 max)
3
2
2
1
1
1
1
1
1
3
1
2
2
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
3
3
2
2
2
1
2
2
2
3
2
2
2
1
1
1
1
1
1
1
1
1
2
Header Global
Rating
(10 max)
7
5
5
5
6
9
9
8
7
6
5
5
5
5
5
5
7
9
9
9
9
9
9
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
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