Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 am Sunday 17 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
19.1° 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: 0.8m 9s primary swell from a East-southeast direction and 0.3m 11s secondary swell from a Southeast direction (forecast issued at 08:00am May 17). The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (17 May)2.5ft (0.7m)7s
Afternoon (17 May)2.5ft (0.8m)9s
Evening (17 May)3ft (0.9m)9s

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 22°C on Sun morning, min 19°C on Sun night). Wind will be generally light.

Sunday
17
Monday
18
Tuesday
19
Wed
20
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
1
1
1
0
0
0
1
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)
0.6
ESE
7
0.7
ESE
7
0.8
ESE
9
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
8
0.9
ESE
8
0.8
ESE
8
0.8
ESE
9
0.7
ESE
9
0.8
ESE
9
0.7
ESE
8
0.7
ESE
9
0.6
SE
11
0.6
SE
11
0.6
SE
11
0.6
SE
11
0.6
SE
10
0.6
SE
10
0.7
SE
10
Wave Graph
Metric surfscale
Energy kJ
34
48
90
88
92
111
106
111
131
103
103
96
101
80
88
72
79
71
73
73
72
89
89
98
Wind (km/h)
5
NW
5
SSE
10
S
15
S
10
S
5
N
5
NNE
0
WSW
5
NNW
5
SE
15
S
15
SSW
10
SW
5
WSW
5
W
5
W
5
NW
5
S
15
S
15
SSW
15
SW
10
WSW
10
W
5
W
glassy
glassy
cross-on
cross-on
cross-on
glassy
cross-off
glassy
glassy
glassy
cross-on
cross-on
cross
cross-off
glassy
glassy
glassy
cross-on
cross-on
cross
cross
cross-off
cross-off
glassy
High Tide
4:43AM1.59m
6:21PM1.45m
5:14AM1.60m
6:59PM1.44m
5:47AM1.59m
7:42PM1.43m
Low Tide
11:40AM0.06m
11:35PM0.87m
12:14PM0.05m
00:11AM0.90m
12:51PM0.07m
00:54AM0.93m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:43
4:41
4:41
4:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:44
6:45
6:45
Temp °C
17
20
22
22
21
21
20
20
19
22
22
22
22
21
20
19
19
21
22
22
22
21
20
20
17
20
21
20
21
21
20
21
19
22
20
20
21
21
20
19
19
21
21
21
22
22
21
22
Swell 1
Height (m)
Direction
Period (s)
0.6
ESE
7
0.7
ESE
7
0.8
ESE
9
0.8
ESE
9
0.8
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
9
0.9
ESE
8
0.9
ESE
8
0.8
ESE
8
0.8
ESE
9
0.7
ESE
9
0.8
ESE
9
0.7
ESE
8
0.7
ESE
9
0.6
SE
11
0.6
E
9
0.6
E
9
0.6
SE
11
0.6
SE
10
0.6
SE
10
0.7
SE
10
Energy kJ
34
48
90
88
92
111
106
111
131
103
103
96
101
80
88
72
79
71
59
61
72
89
89
98
Swell 2
Height (m)
Direction
Period (s)
0.4
ESE
10
0.4
ESE
9
0.3
SE
11
0.3
SE
11
0.1
SE
11
0.1
W
6
0.1
SE
12
0.1
SE
12
0.1
S
7
0.1
SE
7
0.2
SSE
8
0.2
SSE
7
0.2
SSE
7
0.3
SSE
7
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.5
E
8
0.6
SE
11
0.6
SE
11
0.6
E
9
0.5
E
9
0.5
E
9
0.5
E
10
Energy kJ
30
29
18
19
5
1
6
6
1
2
6
5
5
10
17
17
38
33
73
73
59
42
42
54
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
10
0.3
SE
11
0.1
SE
14
0.1
S
8
0.1
SE
7
0.3
SE
10
0.3
SE
10
0.3
ESE
10
0.1
S
8
0.1
S
8
0.1
S
8
Energy kJ
10
18
7
1
2
17
16
19
1
1
1
Wind waves
Height (m)
Direction
Period (s)
0.2
SSW
2
0.2
SSW
2
0.2
WSW
2
Energy kJ
1
1
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
6
6
65
148
65
13
6
6
6
6
208
6
6
6
6
6
6
65
65
6
6
2
2
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
1
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)
1
1
1
1
2
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
Header Global
Rating
(10 max)
5
5
4
4
6
9
9
7
4
4
5
7
5
4
5
4
4
4
4
5
5
4
4
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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