Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 am 19 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
21.3° C

2.2°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 (19 Jun):

  • Morning surf: Morning surf (19 Jun, local time) - 2ft (0.6m), 6s period with SSE swell.
  • Afternoon surf: Afternoon surf (19 Jun, local time) - 1ft (0.3m), 10s period with SE swell.
  • Evening surf: Evening surf (19 Jun, local time) - 1ft (0.3m), 10s period with SE swell.

The current surf forecast for Katahama at 2PM is: 0.3m 10s primary swell from a Southeast direction and 0.4m 6s secondary swell from a South-southeast direction (forecast issued at 08:00am June 19). An open ocean swell of 0.8m 7s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (19 Jun)2ft (0.6m)6s
Afternoon (19 Jun)1ft (0.3m)10s
Evening (19 Jun)1ft (0.3m)10s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 57mm), heaviest during Sat night. Warm (max 28°C on Sun afternoon, min 20°C on Sat afternoon). Winds increasing (calm on Fri night, fresh winds from the W by Sun night).

Friday
19
Saturday
20
Sunday
21
Mon
22
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
0
0
0
0
0
0
0
0
0
0
0
0
0
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
SSE
6
0.6
SSE
6
0.5
SSE
6
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
9
1.5
SW
6
0.4
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
10
0.4
SE
10
Wave Graph
Metric surfscale
Energy kJ
33
27
19
16
16
16
15
15
15
15
15
24
24
24
23
138
22
13
21
21
21
30
32
25
Wind (km/h)
5
NNE
10
E
10
SE
10
S
5
SSE
5
ENE
5
NE
10
NE
10
NE
10
NE
10
NE
10
NNE
10
NE
15
ESE
5
SE
10
WNW
5
WSW
10
WSW
25
WSW
30
W
30
WSW
30
W
30
W
30
WNW
Wind State
glassy
cross-on
on
cross-on
glassy
glassy
cross
cross
cross
cross
cross
cross-off
cross
cross-on
on
off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
7:06AM1.51m
8:52PM1.54m
7:58AM1.41m
9:38PM1.52m
9:00AM1.30m
10:28PM1.51m
Low Tide
2:02PM0.26m
2:47AM0.90m
2:47PM0.38m
3:51AM0.85m
3:36PM0.52m
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
light rain
light rain
mod rain
heavy rain
heavy rain
mod rain
rain showers
cloud
clear
clear
clear
part cloud
clear
<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>
7:01
7:02
7:02
7:02
 mm
1
5
3
10
11
19
7
1
Temp °C
21
23
24
24
24
23
23
22
22
22
22
20
20
20
21
21
21
23
25
28
25
25
23
23
Feels °C
24
25
26
26
27
27
26
24
23
24
24
22
21
21
24
23
24
26
25
25
22
23
20
19
Swell 1
Height (m)
Direction
Period (s)
1.2
SW
8
0.9
SW
8
0.8
SW
8
0.8
SW
7
0.9
SSW
7
0.7
SW
7
0.7
SW
7
0.8
SW
7
0.9
SW
7
0.9
SW
7
0.9
SW
7
0.9
SW
7
0.8
SW
7
0.7
SW
6
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
10
0.4
SE
10
Energy kJ
177
96
79
65
90
48
47
55
69
69
69
69
54
43
23
22
22
13
21
21
21
30
32
25
Swell 2
Height (m)
Direction
Period (s)
0.7
SSE
6
0.6
SSE
6
0.5
SSE
6
0.4
SSE
6
0.3
SE
10
0.3
SSE
5
0.3
SSE
5
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
10
0.2
E
5
0.2
E
5
0.2
SSE
12
0.2
SSE
11
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.2
E
12
0.2
E
12
0.2
ENE
12
Energy kJ
33
27
19
11
16
6
5
15
15
15
15
24
24
24
2
2
13
12
19
19
19
11
11
14
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
11
0.2
ESE
8
0.3
SE
10
0.3
SE
10
0.2
E
8
0.3
SE
10
0.3
SE
10
0.2
SSE
5
0.2
E
8
0.2
E
8
0.2
E
8
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.2
SSE
12
0.2
E
10
0.2
E
10
0.2
E
10
0.2
E
12
0.2
E
12
0.2
ENE
12
0.2
ENE
12
0.1
SE
16
Energy kJ
11
6
16
16
5
16
15
2
6
5
6
6
6
6
6
14
8
7
7
11
11
14
14
10
Wind waves
Height (m)
Direction
Period (s)
0.3
SSE
5
0.2
ENE
3
0.4
SE
3
0.9
SSW
6
1.5
SW
6
2.2
SW
7
2.1
SW
8
2
SW
8
2
SW
8
1.8
SW
8
2.1
SW
8
2.2
SW
8
2
WSW
8
Energy kJ
5
1
2
55
138
462
496
458
507
437
560
650
527
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
3
1
2
1
1
1
1
Distance (km)
2
13
13
65
2
13
13
13
13
13
13
2
13
208
2
2
2
2
6
103
115
103
103
65
Best forecast wave conditions in Shizuoka
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
3
3
3
3
4
4
2
2
Header Global
Rating
(10 max)
5
5
6
6
6
6
4
4
4
4
5
5
4
6
5
5
8
9
9
9
8
8
7
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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