Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 am 28 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
23.0° C

1.2°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 (28 Jun):

  • Morning surf: Morning surf (28 Jun, local time) - 0.5ft (0.2m), 16s period with ESE swell.
  • Afternoon surf: Afternoon surf (28 Jun, local time) - 0.5ft (0.2m), 16s period with ESE swell.
  • Evening surf: Evening surf (28 Jun, local time) - 3.5ft (1.0m), 8s period with SSE swell.

The current surf forecast for Katahama at 2PM is: 0.2m 16s primary swell from a East-southeast direction (forecast issued at 08:00am June 28). An open ocean swell of 2.2m 10s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (28 Jun)0.5ft (0.2m)16s
Afternoon (28 Jun)0.5ft (0.2m)16s
Evening (28 Jun)3.5ft (1.0m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 13mm), heaviest on Sun afternoon. Warm (max 24°C on Mon afternoon, min 21°C on Sun night). Wind will be generally light.

Sunday
28
Monday
29
Tuesday
30
Wed
1
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)
0
0
1
0
0
1
0
1
0
0
0
0
0
1
1
1
0
0
0
0
0
1
1
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)
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
1
SSE
8
1
SSE
8
0.2
ESE
15
0.9
SSE
8
0.7
SSE
7
0.7
SSE
7
0.5
SE
9
0.8
SE
7
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.6
SE
10
0.5
SE
10
0.6
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
Wave Graph
Metric surfscale
Energy kJ
25
25
25
24
151
140
21
102
55
55
41
57
41
41
42
43
58
45
53
41
41
41
41
41
Wind (km/h)
5
WSW
5
SW
0
NNE
10
SW
15
SW
5
WSW
5
W
5
NNE
10
NE
10
E
15
ESE
10
ESE
5
ESE
0
NNE
5
NNE
5
NE
5
NE
10
ESE
10
SSE
15
SSE
10
SSE
5
NE
5
ENE
5
N
Wind State
cross-off
cross
glassy
cross
cross
cross-off
glassy
glassy
cross
cross-on
cross-on
cross-on
glassy
glassy
cross-off
glassy
cross
cross-on
cross-on
on
on
glassy
glassy
cross-off
High Tide
3:19AM1.54m
5:38PM1.47m
3:57AM1.58m
6:08PM1.51m
4:35AM1.61m
6:37PM1.55m
Low Tide
10:39AM0.22m
10:43PM1.10m
11:13AM0.17m
11:20PM1.07m
11:46AM0.14m
11:57PM1.03m
light rain
light rain
light rain
thunderstorm
rain showers
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:35
4:35
4:35
4:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:04
7:04
7:04
 mm
1
2
3
5
3
Temp °C
22
22
22
23
22
22
21
21
21
22
23
24
24
23
23
22
22
23
24
24
24
23
22
22
Feels °C
25
25
26
26
23
24
23
23
22
23
24
26
28
27
26
25
25
25
26
25
27
27
25
25
Swell 1
Height (m)
Direction
Period (s)
3.5
SSW
11
3
SSW
11
2.5
SSW
10
2.1
SSW
10
1.7
SW
10
1.5
SW
9
1.6
SSW
9
1.1
SW
9
1.1
SW
8
1.1
SW
8
1.2
SSW
8
1
SW
8
1.1
SSW
7
1.1
SSW
7
1.1
SSW
7
1
SSW
8
0.9
SSW
8
1
SSW
7
1
SSW
7
1
SSW
7
0.9
SSW
7
0.9
SSW
7
1.3
SSW
7
1.2
SSW
7
Energy kJ
2622
1873
1220
811
535
365
363
189
176
145
174
122
131
131
121
117
88
104
111
108
77
75
168
164
Swell 2
Height (m)
Direction
Period (s)
0.2
ESE
16
0.2
E
8
0.2
ESE
16
0.2
ESE
16
1
SSE
8
1
SSE
8
0.2
ESE
15
0.9
SSE
8
0.7
SSE
7
0.7
SSE
7
0.5
SE
9
0.4
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.6
SE
10
0.5
SE
10
0.6
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
0.5
SE
9
1
SW
8
Energy kJ
25
5
25
24
151
140
21
102
55
55
41
29
41
41
42
43
58
45
53
41
41
41
41
122
Swell 3
Height (m)
Direction
Period (s)
0.2
E
8
0.2
ESE
16
0.2
ESE
16
0.2
ESE
15
0.2
ESE
15
0.2
ESE
15
0.2
E
8
0.3
ESE
15
0.4
SE
9
0.4
SE
9
0.2
ESE
15
0.2
ESE
15
0.3
E
3
0.2
ESE
15
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
13
0.2
ESE
13
0.5
SE
9
Energy kJ
5
25
25
23
22
21
5
42
29
30
21
21
2
21
21
20
19
19
18
18
18
18
18
41
Wind waves
Height (m)
Direction
Period (s)
0.4
ESE
3
0.5
E
3
0.6
E
4
0.8
SE
7
1
SW
7
1.4
SW
7
1.9
SW
7
Energy kJ
3
6
9
57
96
158
344
Nearest Offshore or Glassy
Rating
(10 max)
4
4
3
1
1
2
2
2
2
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
2
94
2
6
6
2
2
2
13
104
104
104
2
2
2
2
13
13
104
104
104
2
2
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
4
4
4
1
1
2
2
2
2
1
1
1
1
1
1
2
3
2
Best forecast wave conditions in Japan
Rating
(10 max)
4
4
4
2
4
3
2
2
2
2
2
2
1
2
2
2
1
2
1
1
1
2
3
3
Header Global
Rating
(10 max)
6
9
9
8
6
6
5
9
5
9
6
6
7
6
5
8
6
5
5
5
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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