Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 am Monday 25 May 2026 JST
Forecast update in hr  min  s Forecast update imminent
Katahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Katahama sea temperature is
19.8° C
(Which is 1.9°C colder than average for this time of year)

How big are the waves at Katahama today?

The current surf forecast for Katahama at 3PM is: 1.2m 8s primary swell from a East-southeast direction and 0.4m 8s secondary swell from a South direction (forecast issued at 08:00am May 25). An open ocean swell of 0.4m 12s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (25 May)5ft (1.5m)8s
Afternoon (25 May)4ft (1.2m)8s
Evening (25 May)4ft (1.2m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 24°C on Wed morning, min 19°C on Mon night). Wind will be generally light.

Monday
25
Tuesday
26
Wednesday
27
Thu
28
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)
3
1
1
0
0
0
1
1
1
0
0
0
0
0
1
1
1
0
0
0
0
1
1
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.7
E
8
1.5
E
8
1.4
ESE
8
1.2
ESE
8
1.2
ESE
8
1.2
ESE
8
1.1
ESE
8
1.1
ESE
8
1
ESE
8
1
ESE
8
1.1
ESE
8
1.1
ESE
8
1.1
ESE
8
1
ESE
8
1
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
Wave Graph
Metric surfscale
Energy kJ
374
272
226
170
170
170
138
138
119
133
146
146
146
137
133
105
85
101
105
102
102
102
102
102
Wind (km/h)
10
NNE
15
ENE
10
E
10
SSE
15
SE
10
ESE
5
NE
5
NNE
5
NNE
10
ENE
10
E
15
SE
15
SE
10
E
10
NNE
10
NNE
10
NE
15
ENE
10
E
15
SE
10
SE
5
ESE
5
E
5
ENE
cross-off
cross
cross-on
on
on
cross-on
glassy
glassy
cross-off
cross
cross-on
on
on
cross-on
cross-off
cross-off
cross-off
cross
cross-on
on
on
glassy
glassy
glassy
High Tide
1:05PM1.11m
1:36AM1.43m
2:28PM1.19m
2:15AM1.46m
3:27PM1.27m
2:48AM1.49m
Low Tide
7:26AM0.74m
6:49PM0.67m
8:23AM0.59m
7:54PM0.75m
9:07AM0.46m
8:49PM0.81m
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
cloud
part cloud
clear
part cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:37
4:37
4:37
4:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:49
6:50
6:51
6:51
Temp °C
18
21
22
23
21
20
20
19
19
21
22
23
23
22
21
20
20
23
24
24
23
23
22
22
17
20
22
22
21
20
22
20
20
21
22
22
22
22
21
19
19
21
23
25
24
26
25
25
Swell 1
Height (m)
Direction
Period (s)
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
0.4
S
8
0.5
S
8
1.2
ESE
8
1.1
ESE
8
1.1
ESE
8
1
ESE
8
1
ESE
8
1.1
ESE
8
0.3
ENE
10
0.3
ENE
11
1
ESE
8
1
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.2
ESE
14
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
0.9
ESE
8
Energy kJ
204
196
196
19
29
170
138
138
119
133
146
22
22
137
133
105
85
101
105
19
102
102
102
102
Swell 2
Height (m)
Direction
Period (s)
0.4
ENE
11
0.4
ENE
11
0.4
SSW
8
0.4
ENE
12
0.4
ENE
12
0.4
SSW
7
0.4
ENE
12
0.4
ENE
12
0.4
SSE
7
0.4
S
6
0.3
ENE
11
0.3
S
6
0.3
S
6
0.3
ENE
10
0.3
E
11
0.3
E
10
0.2
E
10
0.1
SE
14
0.2
ESE
14
0.1
SE
10
0.2
ESE
14
0.2
ESE
14
0.2
ESE
14
0.2
ESE
13
Energy kJ
37
39
28
44
44
17
46
44
15
13
23
7
7
20
20
17
8
8
19
4
19
19
18
18
Swell 3
Height (m)
Direction
Period (s)
0.1
SW
9
0.3
SSW
9
0.4
ENE
11
0.3
SW
8
0.1
E
16
0.4
ENE
12
0.4
SSE
7
0.3
SSE
7
0.4
ENE
11
0.4
ENE
11
0.3
S
6
0.1
SE
15
0.1
SE
15
0.3
S
6
0.2
S
6
0.2
S
6
0.2
S
6
0.2
S
6
0.1
S
6
0.1
S
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
Energy kJ
3
15
40
10
5
46
15
9
41
40
7
9
9
6
3
3
2
2
1
2
4
4
4
4
Wind waves
Height (m)
Direction
Period (s)
1.7
E
8
1.5
E
8
1.4
ESE
8
1.2
ESE
8
1.2
ESE
8
1.1
ESE
8
1.1
ESE
8
0.4
NE
3
0.9
ESE
8
Energy kJ
374
272
226
170
170
146
146
2
102
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
2
13
13
13
85
103
2
2
2
13
13
103
85
104
13
13
13
13
13
104
13
13
13
6
Best forecast wave conditions in Shizuoka
Rating
(10 max)
3
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
4
2
3
1
2
2
2
2
2
1
2
1
1
2
1
2
2
2
1
1
1
2
2
2
Header Global
Rating
(10 max)
5
5
4
4
4
4
4
4
4
4
5
8
9
9
9
9
5
6
6
7
7
7
6
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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