Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 am Wednesday 20 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
20.0° C
(Which is 1.2°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: 0.8m 10s primary swell from a East-southeast direction and 0.2m 7s secondary swell from a South direction, 0.5m 4s secondary swell from a South-southwest direction (forecast issued at 08:00am May 20). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (20 May)2.5ft (0.8m)10s
Afternoon (20 May)2.5ft (0.8m)10s
Evening (20 May)2.5ft (0.8m)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 41mm), heaviest during Thu afternoon. Warm (max 24°C on Wed morning, min 16°C on Fri morning). Winds increasing (calm on Wed night, fresh winds from the NE by Fri afternoon).

Wednesday
20
Thursday
21
Friday
22
Sat
23
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)
1
1
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.7
ESE
9
0.7
ESE
9
0.7
ESE
9
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.7
E
10
1.4
E
5
1.6
E
6
1.7
E
7
1.8
E
8
1.7
E
8
1.9
E
8
1.9
E
9
Wave Graph
Metric surfscale
Energy kJ
130
127
127
125
122
120
115
115
78
78
78
54
54
55
55
55
90
98
175
0
0
0
0
0
Wind (km/h)
10
W
15
SW
20
SW
20
SW
15
SW
10
WSW
5
WSW
5
SSW
5
SSW
10
SW
25
SW
25
WSW
20
SW
25
SW
20
SW
10
SW
20
NE
30
NE
25
NE
25
ENE
30
NE
25
NE
30
NE
25
NE
cross-off
cross-off
cross
cross
cross
cross-off
glassy
cross
cross
cross
cross
cross-off
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
6:25AM1.53m
8:30PM1.40m
7:08AM1.44m
9:27PM1.38m
7:59AM1.32m
10:34PM1.36m
Low Tide
1:34PM0.12m
1:49AM0.96m
2:22PM0.22m
3:01AM0.98m
3:17PM0.34m
clear
part cloud
clear
part cloud
cloud
light rain
rain showers
light rain
rain showers
light rain
light rain
light rain
mod rain
light rain
light rain
thunderstorm
mod rain
light rain
cloud
cloud
cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:41
4:39
4:39
4:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:45
6:46
6:46
6:47
2
2
2
2
2
4
5
7
4
1
2
6
2
Temp °C
20
22
24
24
22
22
22
21
21
22
22
21
22
22
21
21
17
16
17
17
17
17
16
16
21
22
23
23
23
25
26
24
24
24
21
19
23
21
21
23
15
12
13
13
12
12
11
11
Swell 1
Height (m)
Direction
Period (s)
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
1.1
S
6
0.7
ESE
9
0.7
ESE
9
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
2.1
SW
8
1.8
SW
8
1.5
SW
8
1.4
SW
8
1.1
SW
8
0.9
SSW
8
0.9
SW
8
0.7
SW
8
Energy kJ
130
127
127
125
122
120
115
115
89
78
78
54
54
55
55
55
575
388
268
238
167
112
91
60
Swell 2
Height (m)
Direction
Period (s)
0.1
S
7
0.1
S
7
0.1
S
7
0.2
S
7
0.2
S
7
0.4
SSW
7
0.4
S
6
0.6
S
5
0.7
ESE
9
0.5
ESE
10
0.5
ESE
10
0.4
ESE
10
Energy kJ
1
1
1
4
3
15
13
19
78
54
54
32
Swell 3
Height (m)
Direction
Period (s)
0.1
S
8
0.1
S
8
0.1
S
8
0.2
S
6
Energy kJ
1
1
1
3
Wind waves
Height (m)
Direction
Period (s)
0.4
SSW
4
0.5
S
4
0.5
SSW
4
0.5
SSW
4
0.5
S
4
0.5
S
5
1
S
6
1.5
S
7
2.4
SSW
7
2.4
SW
7
2.5
SW
8
2.4
SW
8
2.3
SW
8
2.3
SW
8
0.7
E
10
1.4
E
5
1.6
E
6
1.7
E
7
1.8
E
8
1.7
E
8
1.9
E
8
1.9
E
9
Energy kJ
4
8
8
8
7
13
60
196
495
598
724
681
636
653
90
98
175
255
377
355
430
542
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
2
1
1
1
1
1
1
1
2
2
3
2
1
3
1
2
1
1
1
1
1
Distance (km)
2
6
236
236
65
6
6
6
6
6
127
112
103
65
65
6
94
334
13
351
351
351
351
13
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
1
1
1
1
3
2
4
3
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
2
2
2
2
2
1
2
2
3
1
3
2
3
3
4
3
2
2
1
1
1
1
2
Header Global
Rating
(10 max)
4
5
5
5
5
4
4
5
5
5
5
5
5
5
4
4
4
4
5
7
7
7
7
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

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Katahama surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


Nearest locationNearest
Nearest locationNearest
Nearest locationNearest