Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 pm 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 1.3°C colder than average for this time of year)

How big are the waves at Katahama today?

The current surf forecast for Katahama at 11PM is: 0.8m 10s primary swell from a East-southeast direction and 0.4m 6s secondary swell from a South direction (forecast issued at 08:00pm May 20). The wind direction is predicted to be glassy.

Time (JST) & DateWave HeightWave Period
Morning (20 May)--
Afternoon (20 May)--
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 20mm), heaviest during Thu morning. Warm (max 23°C on Thu morning, min 15°C on Fri night). Mainly fresh winds.

Wed
20
Thursday
21
Friday
22
Saturday
23
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
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height 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
0.7
ESE
9
0.7
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.4
ESE
10
0.7
E
10
0.4
ESE
10
1.1
E
5
1.1
ENE
6
1.2
SW
8
1.9
E
7
2.1
E
8
1.8
E
9
0.1
SE
8
2.1
E
7
2.1
E
7
2
E
7
Wave Graph
Metric surfscale
Energy kJ
122
120
115
103
103
78
80
54
54
55
55
37
89
36
64
80
0
0
0
0
2
0
0
363
Wind (km/h)
15
SSW
5
WSW
5
W
5
SSW
5
S
15
SW
30
SW
30
WSW
25
WSW
15
WSW
15
WSW
10
NNE
20
NE
20
NE
25
NE
25
NE
25
NE
30
NE
30
NE
25
NE
25
NE
25
NE
25
NE
25
ENE
cross
glassy
glassy
glassy
glassy
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
8:30PM1.40m
7:08AM1.44m
9:27PM1.38m
7:59AM1.32m
10:34PM1.36m
9:10AM1.19m
Low Tide
1:49AM0.96m
2:22PM0.22m
3:01AM0.98m
3:17PM0.34m
4:32AM0.95m
part cloud
rain showers
rain showers
rain showers
rain showers
light rain
light rain
thunderstorm
cloud
light rain
thunderstorm
light rain
light rain
cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
1
1
1
2
2
3
3
1
2
3
1
Temp °C
22
22
21
21
21
23
22
23
22
22
22
20
17
18
18
19
18
16
15
15
15
16
17
18
23
25
24
24
24
25
21
22
21
23
23
21
15
16
14
15
14
11
10
10
10
11
12
13
Swell 1
Height (m)
Direction
Period (s)
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
1
S
6
1.4
S
6
0.7
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.4
ESE
10
2.1
SW
8
1.8
SW
8
1.5
SSW
8
1.4
SW
8
1.2
SW
8
1
SW
8
0.7
SW
8
0.6
SSW
7
0.6
SSW
7
0.4
SSW
7
0.4
SSW
7
0.3
SW
7
Energy kJ
122
120
115
103
71
161
80
54
54
55
55
37
575
378
264
236
178
116
57
37
35
20
19
8
Swell 2
Height (m)
Direction
Period (s)
0.1
S
8
0.3
SSW
7
0.4
S
6
0.6
S
6
0.8
ESE
10
0.7
ESE
9
0.4
ESE
10
0.4
ESE
10
0.4
ESE
10
0.4
ESE
10
0.1
SE
8
0.2
S
7
Energy kJ
1
9
12
24
103
78
36
36
31
32
2
4
Swell 3
Height (m)
Direction
Period (s)
Energy kJ
Wind waves
Height (m)
Direction
Period (s)
0.3
SSW
4
1
S
6
1.5
S
6
1.8
SSW
7
2.4
SSW
7
2.4
SW
8
2.2
SW
8
2.3
SW
8
2.4
SW
8
0.7
E
10
0.9
ENE
4
1.1
E
5
1.1
ENE
6
1.4
ENE
6
1.9
E
7
2.1
E
8
1.8
E
9
2
E
6
2.1
E
7
2.1
E
7
2
E
7
Energy kJ
3
66
167
286
578
631
573
605
735
89
34
64
80
170
397
537
487
328
420
437
363
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
2
3
4
2
2
3
2
2
2
1
1
2
1
1
Distance (km)
355
355
6
6
6
6
2
6
127
103
103
150
94
2
94
13
13
13
13
13
13
437
661
661
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
1
1
4
4
2
3
2
2
2
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
2
2
2
2
2
2
3
2
3
4
4
2
3
2
2
2
1
1
2
1
1
Header Global
Rating
(10 max)
5
5
4
4
4
5
5
5
4
5
5
5
5
4
4
4
5
7
7
8
6
5
5
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