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

Katahama 48 hour detailed Surf Forecast

Weather Forecast for Katahama

Issued: 8 am 09 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) - 1.5ft (0.5m), 9s period with E swell.

The current surf forecast for Katahama at 11AM is: 0.6m 8s primary swell from a East direction (forecast issued at 08:00am June 09). An open ocean swell of 0.9m 8s is not directed at the surf break, a second open ocean swell of 0.8m 5s is not directed at the surf break, a second open ocean swell of 1.0m 5s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (09 Jun)2.5ft (0.7m)8s
Afternoon (09 Jun)2ft (0.6m)9s
Evening (09 Jun)1.5ft (0.5m)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 2mm), mostly falling on Tue afternoon. Warm (max 21°C on Tue morning, min 19°C on Tue night). Wind will be generally light.

Tuesday
9
Wednesday
10
Thursday
11
Fri
12
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
12 AM
3 AM
Rating
(10 max)
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
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)
0.7
E
8
0.7
E
8
0.6
E
8
0.6
E
9
0.6
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.4
E
8
0.4
E
8
0.4
E
8
0.3
E
8
0.5
E
8
0.6
E
6
1
E
6
0.7
E
7
0.6
E
7
0.1
E
15
0.5
SSE
7
0.5
E
7
0.5
E
6
0.5
E
6
0.5
E
6
0.5
SSE
7
Wave Graph
Metric surfscale
Energy kJ
66
68
51
52
52
37
36
36
23
22
21
12
32
21
66
51
38
4
30
22
19
19
19
27
Wind (km/h)
10
W
10
W
5
SSE
10
SSE
10
SW
15
W
15
WSW
15
W
15
WSW
10
WSW
5
SE
10
ESE
5
SSE
5
NNE
10
NNE
5
NNE
5
NNE
5
ESE
15
S
15
S
10
S
5
SW
5
NW
5
NNW
Wind State
cross-off
cross-off
cross-on
on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
on
on
on
glassy
cross-off
glassy
cross-off
glassy
cross-on
cross-on
cross-on
glassy
glassy
off
High Tide
1:33PM1.15m
1:22AM1.46m
2:52PM1.22m
2:04AM1.48m
3:51PM1.30m
2:40AM1.51m
Low Tide
7:26AM0.66m
6:46PM0.81m
8:24AM0.53m
7:54PM0.89m
9:11AM0.41m
8:53PM0.95m
light rain
cloud
cloud
cloud
light rain
light rain
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
4:33
4:33
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:58
6:59
6:59
7:00
 mm
1
1
1
Temp °C
20
20
21
21
20
20
20
19
19
20
21
21
20
20
19
19
19
21
21
21
21
20
20
19
Feels °C
21
21
23
22
21
19
19
18
18
20
21
20
21
21
19
20
20
22
20
20
21
21
21
20
Swell 1
Height (m)
Direction
Period (s)
0.9
SW
9
0.8
SW
8
0.9
SW
8
0.9
SSW
8
0.9
SSW
9
0.5
E
9
0.5
E
9
0.5
E
9
0.4
E
8
1.4
SW
8
1.4
SW
8
1.3
SSW
9
1.2
SSW
9
1
SW
9
1
SSW
8
1
SSW
8
1.4
SSW
9
1.5
SSW
9
1.4
SSW
9
1.4
SSW
9
1.3
SSW
9
1.1
SW
9
1.2
SSW
9
0.9
SSW
9
Energy kJ
126
82
95
98
138
37
36
36
23
266
256
252
202
145
147
128
315
377
313
333
274
190
227
138
Swell 2
Height (m)
Direction
Period (s)
0.7
E
8
0.7
E
8
0.8
W
5
0.6
E
9
0.7
SW
8
0.1
SE
9
0.1
E
16
0.1
E
16
0.4
E
8
0.4
E
8
0.3
E
8
0.3
E
8
0.4
SSE
6
0.7
E
6
0.8
SSW
10
0.6
E
7
0.5
E
7
0.5
SSE
7
0.5
E
7
0.5
E
6
0.4
SSE
7
0.5
E
6
0.5
SSE
7
Energy kJ
66
68
32
52
63
3
5
5
22
21
12
12
14
33
125
38
26
30
22
19
19
19
27
Swell 3
Height (m)
Direction
Period (s)
0.5
S
7
0.4
SSE
7
0.6
E
8
0.6
W
5
0.6
E
9
0.1
E
16
0.1
E
16
0.1
E
16
0.2
E
9
0.3
SSW
11
0.7
E
7
0.1
E
15
0.1
E
15
0.5
E
7
0.1
E
15
0.1
E
15
0.5
E
6
0.1
E
14
0.5
E
6
Energy kJ
23
15
51
15
52
5
5
5
6
24
51
4
4
25
4
4
19
4
20
Wind waves
Height (m)
Direction
Period (s)
1
WSW
5
1
W
5
1
WNW
5
0.2
SSE
2
1.5
SSW
8
1.9
SW
8
1.8
SW
8
1.6
SW
8
0.5
E
8
0.6
E
6
1
E
6
1
ENE
7
0.8
ENE
7
0.8
ENE
6
Energy kJ
51
53
53
1
322
479
428
349
32
21
66
105
63
55
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
2
2
2
3
2
1
2
1
1
1
1
1
2
1
1
1
1
1
1
Distance (km)
2
2
6
94
6
2
65
2
2
2
150
13
150
2
2
2
2
13
104
104
66
2
2
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
1
2
2
2
3
2
2
1
2
2
2
2
1
2
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
3
1
2
1
2
2
2
2
3
2
1
2
1
2
2
2
2
2
2
2
1
2
2
2
Header Global
Rating
(10 max)
6
9
9
8
7
6
5
5
5
5
5
4
7
8
8
9
9
9
7
6
8
6
6
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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