Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 am 26 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
22.6° C

1.5°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 (26 Jun):

  • Morning surf: Morning surf (26 Jun, local time) - 1.5ft (0.4m), 10s period with SE swell.
  • Afternoon surf: Afternoon surf (26 Jun, local time) - 1.5ft (0.4m), 11s period with SE swell.
  • Evening surf: Evening surf (26 Jun, local time) - 1.5ft (0.4m), 11s period with SE swell.

The current surf forecast for Katahama at 7AM is: 1.4m 6s primary swell from a South-southwest direction and 0.4m 10s secondary swell from a Southeast direction (forecast issued at 02:00am June 26). An open ocean swell of 1.7m 14s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (26 Jun)1.5ft (0.4m)10s
Afternoon (26 Jun)1.5ft (0.4m)11s
Evening (26 Jun)1.5ft (0.4m)11s

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 143mm), heaviest during Fri night. Warm (max 26°C on Fri morning, min 21°C on Fri night). Winds decreasing (fresh winds from the NNE on Fri night, calm by Sun night).

Friday
26
Saturday
27
Sunday
28
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
6 PM
9 PM
Rating
(10 max)
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
1
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)
1.1
S
7
0.4
SE
10
1.4
SSW
6
0.4
SE
10
0.4
SE
12
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.4
SE
10
0.4
SE
10
0.9
SSE
6
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
1.1
NE
4
0.2
ESE
16
0.2
ESE
16
0.2
E
8
0.2
ESE
16
0.2
ESE
16
0.2
ESE
15
1
SSE
8
Wave Graph
Metric surfscale
Energy kJ
103
28
131
31
34
30
30
29
27
26
53
26
25
25
25
25
41
25
25
10
25
24
22
122
Wind (km/h)
15
S
5
WNW
10
SW
25
SW
30
WSW
25
WSW
15
W
10
WSW
5
N
10
E
35
NNE
25
WSW
25
SW
15
SW
15
ENE
25
NE
10
NW
20
W
10
WNW
5
WSW
10
S
10
SE
5
SE
5
ENE
Wind State
cross-on
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
glassy
cross-on
cross-off
cross-off
cross
cross
cross-on
cross
off
cross-off
cross-off
glassy
cross-on
on
on
glassy
High Tide
1:58AM1.49m
4:20PM1.35m
2:40AM1.51m
5:04PM1.42m
3:19AM1.54m
5:38PM1.47m
Low Tide
9:21AM0.38m
9:09PM1.08m
10:02AM0.29m
10:02PM1.10m
10:39AM0.22m
heavy rain
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
light rain
light rain
light rain
heavy rain
rain showers
part cloud
light rain
mod rain
heavy rain
clear
clear
part cloud
rain showers
cloud
cloud
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:35
4:35
4:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:04
7:04
 mm
16
4
2
1
2
1
1
1
2
4
58
41
1
7
22
1
1
Temp °C
22
22
23
25
26
26
23
22
21
21
22
23
26
23
22
23
23
22
22
23
23
23
23
23
Feels °C
24
25
26
26
26
26
24
23
24
23
19
23
25
24
24
23
25
23
24
26
25
26
26
27
Swell 1
Height (m)
Direction
Period (s)
1.6
SSW
14
1.6
SSW
14
1.7
SSW
14
0.4
SE
10
1.6
SW
13
1.7
SSW
7
1.6
SW
13
1.5
SW
13
1.9
SSW
13
1.9
SSW
13
1.4
SW
13
3
S
9
3.5
SSW
10
3
SSW
11
3
SSW
12
2.5
S
12
3
SSW
11
4.5
SSW
12
4
SSW
12
3
SSW
11
2.5
SSW
11
2.4
SSW
10
2.1
SSW
10
1.7
SSW
10
Energy kJ
1014
1028
1005
27
854
251
880
769
1216
1216
680
1285
2665
2152
2813
1966
2344
5654
3880
2295
1675
1198
846
511
Swell 2
Height (m)
Direction
Period (s)
0.4
E
7
0.6
SE
6
0.4
SE
10
0.2
E
6
0.4
SE
12
1.6
SW
14
1.5
SSW
7
1.3
SSW
7
0.4
SE
10
0.4
SE
10
0.9
SW
7
1.1
SW
13
0.9
SSW
15
1.6
S
14
0.6
SW
12
0.7
SW
12
0.9
SW
13
0.6
NE
5
0.2
ESE
16
0.2
E
8
0.2
E
8
0.2
ESE
16
0.2
ESE
15
1
SSE
8
Energy kJ
17
28
27
3
34
907
192
154
27
26
63
424
370
961
92
132
273
17
25
5
5
24
22
122
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
10
0.4
SE
10
0.3
E
6
0.2
ESE
18
0.2
ESE
18
0.4
SE
11
0.4
SE
11
0.4
SE
11
0.1
SE
18
0.1
SE
18
0.4
SE
10
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.2
ESE
16
0.1
SE
16
0.2
ESE
16
0.2
E
8
0.2
E
8
0.2
ESE
15
Energy kJ
26
26
7
31
31
30
30
29
12
12
26
26
25
25
25
25
25
25
10
25
6
6
21
Wind waves
Height (m)
Direction
Period (s)
1.1
S
7
1.1
SSW
9
1.4
SSW
6
2.3
SSW
13
1.9
SW
6
1
WSW
7
0.9
SSE
6
0.2
E
8
1.1
NE
4
1.1
N
5
Energy kJ
103
176
131
1807
312
93
53
5
41
59
Nearest Offshore or Glassy
Rating
(10 max)
1
3
2
2
3
3
2
2
2
4
1
2
4
4
3
4
3
1
4
4
4
4
3
2
Distance (km)
103
2
355
334
352
94
2
2
2
13
103
137
373
103
103
94
2
6
2
2
94
13
13
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
3
3
2
2
4
4
4
3
1
4
4
4
4
3
3
Best forecast wave conditions in Japan
Rating
(10 max)
3
3
4
3
3
3
4
3
4
4
2
4
4
4
4
5
4
4
4
4
4
4
3
3
Header Global
Rating
(10 max)
5
4
4
5
5
5
6
7
7
7
5
5
6
6
6
5
5
7
5
8
8
7
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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