Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 am 16 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
21.2° 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 (16 Jun):

  • Morning surf: Morning surf (16 Jun, local time) - 4ft (1.2m), 9s period with ESE swell.
  • Afternoon surf: Afternoon surf (16 Jun, local time) - 3.5ft (1.0m), 8s period with ESE swell.
  • Evening surf: Evening surf (16 Jun, local time) - 2.5ft (0.8m), 8s period with E swell.

The current surf forecast for Katahama at 1PM is: 1.1m 8s primary swell from a East direction (forecast issued at 08:00am June 16). An open ocean swell of 0.6m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (16 Jun)4ft (1.2m)9s
Afternoon (16 Jun)3.5ft (1.0m)8s
Evening (16 Jun)2.5ft (0.8m)8s

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 47mm), heaviest during Wed night. Warm (max 22°C on Tue afternoon, min 19°C on Wed night). Wind will be generally light.

Tuesday
16
Wednesday
17
Thursday
18
Fri
19
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)
2
1
0
0
0
0
1
1
0
0
0
0
0
0
0
0
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)
1.3
E
9
1.2
ESE
9
1.1
E
9
1
ESE
8
0.9
E
8
0.8
E
8
0.7
E
8
0.6
E
8
0.6
E
8
0.5
E
9
0.4
E
8
0.8
SSE
7
1.1
S
8
0.4
E
9
0.3
E
9
0.3
E
9
1.4
SSE
6
1.3
SSE
6
1.2
SE
6
1.2
SSE
7
1.1
SE
6
0.9
SSE
6
0.8
SSE
6
0.6
SSE
6
Wave Graph
Metric surfscale
Energy kJ
269
227
181
151
116
90
71
51
52
36
23
58
157
23
13
13
160
126
120
116
97
69
47
29
Wind (km/h)
0
WNW
5
SSW
15
SSW
15
SSW
10
SSW
5
SSE
5
S
5
NE
5
ENE
15
E
20
SE
20
SE
15
E
10
ENE
10
NE
10
NNE
15
NE
20
NE
10
ESE
10
SSE
5
S
0
NW
5
N
5
NW
Wind State
glassy
cross-on
cross-on
cross-on
cross
cross-on
glassy
glassy
cross
cross-on
on
on
cross-on
cross
cross
cross-off
cross-off
cross
cross-on
on
cross-on
glassy
glassy
glassy
High Tide
4:57AM1.61m
6:57PM1.52m
5:36AM1.61m
7:32PM1.53m
6:19AM1.57m
8:11PM1.54m
Low Tide
12:05PM0.10m
00:14AM1.00m
12:42PM0.11m
00:58AM0.97m
1:20PM0.17m
1:49AM0.93m
rain showers
rain showers
part cloud
cloud
part cloud
cloud
clear
part cloud
clear
part cloud
part cloud
cloud
cloud
light rain
heavy rain
heavy rain
heavy rain
light rain
cloud
part cloud
clear
clear
clear
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>
7:00
7:01
7:01
7:01
 mm
1
1
1
14
16
14
1
Temp °C
20
21
21
22
21
21
21
20
20
21
22
21
20
20
19
19
19
21
22
22
22
22
21
21
Feels °C
23
23
21
22
22
22
23
22
22
21
21
19
20
21
20
20
19
21
23
23
24
26
24
24
Swell 1
Height (m)
Direction
Period (s)
1.3
E
9
1.2
ESE
9
1.1
E
9
1
ESE
8
0.9
E
8
0.8
E
8
0.7
E
8
0.6
E
8
0.6
E
8
0.5
E
9
0.5
SSW
7
0.4
E
8
1.1
S
8
1.2
S
8
1.6
SSW
7
2
SSW
7
2.1
SSW
8
1.6
SW
8
1.6
SW
9
1.5
SW
9
1.3
SW
8
1.1
SW
8
1.1
SW
8
1
SW
8
Energy kJ
269
227
181
151
116
90
71
51
52
36
26
23
157
163
261
405
514
311
376
336
214
169
153
129
Swell 2
Height (m)
Direction
Period (s)
0.5
S
7
0.5
SSW
7
0.6
SSW
8
0.5
SSW
7
0.6
SSW
7
0.5
SSW
7
0.5
SSW
7
0.4
SSW
7
0.5
SSW
7
0.4
SSW
7
0.4
E
8
0.3
SW
8
0.1
SE
10
0.4
E
9
0.3
E
9
0.3
E
9
0.3
E
9
1.3
SSE
6
1.2
SE
6
0.2
ESE
10
1.1
SE
6
0.9
SSE
6
0.8
SSE
6
0.6
SSE
6
Energy kJ
27
29
44
31
42
29
27
19
27
19
23
11
4
23
13
13
14
126
120
10
97
69
47
29
Swell 3
Height (m)
Direction
Period (s)
0.5
SSE
8
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
E
13
0.2
S
6
0.1
SE
9
0.1
SE
6
0.1
SE
9
0.1
SE
10
0.1
SE
12
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.2
ESE
10
0.2
E
10
0.1
SE
16
0.1
SE
11
0.2
SSE
10
0.2
SSE
11
0.3
ESE
8
Energy kJ
32
7
7
7
7
7
3
3
3
1
3
4
6
4
4
4
4
10
8
10
5
10
11
12
Wind waves
Height (m)
Direction
Period (s)
0.4
SE
6
0.4
SE
6
0.8
SSE
7
0.4
E
9
1.6
SSW
7
1.4
SSE
6
0.3
E
9
1.2
SSE
7
Energy kJ
8
10
58
23
268
160
13
116
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
1
2
1
1
1
1
2
2
2
1
2
3
3
2
1
1
2
1
1
1
Distance (km)
2
65
148
6
6
208
6
13
13
208
208
208
208
382
13
2
13
13
124
104
105
2
2
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
2
2
1
1
1
1
1
2
3
3
2
2
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
3
2
2
1
2
2
2
2
2
2
2
3
3
2
2
3
3
4
4
2
2
2
2
1
Header Global
Rating
(10 max)
5
5
5
5
5
5
4
4
4
5
5
5
7
4
4
4
5
5
6
8
8
6
5
6
  • 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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