Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 pm 12 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
20.9° C

2.3°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 (13 Jun):

  • Morning surf: Morning surf (13 Jun, local time) - 1ft (0.3m), 9s period with ESE swell.
  • Afternoon surf: Afternoon surf (13 Jun, local time) - 1.5ft (0.5m), 8s period with E swell.
  • Evening surf: Evening surf (13 Jun, local time) - 1.5ft (0.5m), 8s period with E swell.

The current surf forecast for Katahama at 5AM is: 0.1m 10s primary swell from a Southeast direction and 0.2m 7s secondary swell from a East direction (forecast issued at 08:00pm June 12). An open ocean swell of 1.1m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (13 Jun)1ft (0.3m)9s
Afternoon (13 Jun)1.5ft (0.5m)8s
Evening (13 Jun)1.5ft (0.5m)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 17mm), heaviest on Sun night. Warm (max 23°C on Sat morning, min 18°C on Sun night). Winds increasing (calm on Sat night, strong winds from the NE by Mon morning).

Fri
12
Saturday
13
Sunday
14
Monday
15
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)
0
0
0
0
0
0
0
0
0
0
1
1
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
SSE
6
0.5
SSE
7
0.6
SW
4
0.2
E
6
0.2
E
7
0.3
ESE
9
0.4
SSE
7
0.5
E
8
0.5
E
8
0.5
E
8
0.6
S
7
0.5
E
8
0.5
E
8
0.5
E
8
0.5
E
8
0.5
E
8
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.9
ESE
9
1.5
E
5
0.5
S
7
0.5
S
9
Wave Graph
Metric surfscale
Energy kJ
23
25
9
3
4
16
18
29
29
30
31
31
31
31
33
35
38
39
38
38
129
115
25
42
Wind (km/h)
15
SW
10
W
5
NW
5
NNE
10
NE
10
E
10
SE
15
S
15
SSW
5
WSW
5
NW
5
NNE
5
NE
10
ENE
10
ESE
10
SSE
10
SE
10
E
15
E
20
ESE
20
ENE
35
ENE
40
NE
35
NE
Wind State
cross
cross-off
off
cross-off
cross
cross-on
on
cross-on
cross
cross-off
glassy
cross-off
cross
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
High Tide
4:38PM1.37m
3:14AM1.53m
5:17PM1.42m
3:47AM1.57m
5:51PM1.46m
4:21AM1.60m
Low Tide
9:41PM1.00m
10:26AM0.22m
10:21PM1.02m
10:59AM0.15m
10:57PM1.03m
11:32AM0.11m
part cloud
clear
clear
part cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
light rain
light rain
light rain
cloud
light rain
mod rain
light rain
light rain
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>
7:00
7:00
7:00
7:00
 mm
1
1
1
5
6
2
1
Temp °C
23
22
21
20
20
21
23
23
23
22
21
20
20
21
23
22
22
21
21
19
18
18
19
20
Feels °C
22
22
22
21
20
21
23
23
23
24
23
21
21
21
24
23
23
22
22
18
16
13
13
14
Swell 1
Height (m)
Direction
Period (s)
0.5
SSE
6
0.7
SW
8
0.9
SSW
9
0.9
SSW
9
1.1
SSW
8
1
SSW
8
0.9
SW
8
0.7
SW
8
0.6
SW
8
0.5
SW
8
0.6
S
7
0.6
S
6
0.6
S
6
0.5
E
8
0.5
E
8
0.5
E
8
0.5
E
9
0.5
E
9
0.5
E
9
0.7
S
6
0.8
S
6
0.7
S
6
0.5
S
7
0.5
S
9
Energy kJ
23
70
131
134
153
128
98
69
53
32
31
28
27
31
33
35
38
39
38
30
43
32
25
42
Swell 2
Height (m)
Direction
Period (s)
0.2
E
7
0.5
SSE
7
0.2
E
7
0.6
SW
8
0.2
E
7
0.3
ESE
9
0.4
SSE
7
0.5
E
8
0.5
E
8
0.5
E
8
0.5
SW
8
0.5
E
8
0.5
E
8
0.5
S
6
0.5
S
6
0.4
SSE
6
0.3
SW
7
0.5
S
6
0.3
SW
7
0.5
E
9
0.1
SE
15
0.1
SE
15
0.1
SE
14
0.1
E
14
Energy kJ
4
25
3
44
3
16
18
29
29
30
31
31
31
19
19
12
8
18
7
38
8
8
8
4
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
11
0.3
SSW
11
0.1
SE
9
0.2
E
6
0.1
SE
10
0.1
E
13
0.4
ESE
7
0.1
E
16
0.1
SE
16
0.1
SE
16
0.5
E
8
0.5
SW
8
0.4
SW
8
0.4
SW
7
0.4
SW
7
0.4
SW
7
0.1
SE
15
0.3
SW
7
0.2
SSE
6
0.1
SW
7
0.1
E
15
0.1
SW
7
Energy kJ
12
23
3
3
4
3
18
5
10
10
30
29
20
19
14
14
8
8
3
2
4
2
Wind waves
Height (m)
Direction
Period (s)
0.9
SSW
8
0.6
SW
4
0.6
SW
4
0.5
S
7
0.7
S
7
0.7
S
7
0.5
S
6
0.5
S
4
0.5
S
4
0.9
ESE
9
1.5
E
5
2.2
E
6
2.3
E
7
Energy kJ
123
11
9
23
44
43
18
7
9
129
115
380
569
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
3
3
Distance (km)
65
2
2
2
2
13
104
6
65
2
2
6
13
13
13
208
208
13
211
334
352
352
334
94
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
3
3
4
4
4
Header Global
Rating
(10 max)
8
9
6
4
7
8
7
5
5
5
5
5
5
5
5
4
7
5
5
5
9
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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