Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 pm Monday 18 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
19.6° C
(Which is 1.5°C colder than average for this time of year)

How big are the waves at Katahama today?

The current surf forecast for Katahama at 5AM is: 0.7m 9s primary swell from a East-southeast direction and 0.4m 10s secondary swell from a Southeast direction (forecast issued at 08:00pm May 18). The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (19 May)1.5ft (0.5m)11s
Afternoon (19 May)2ft (0.6m)11s
Evening (19 May)2ft (0.6m)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 67mm), heaviest during Thu afternoon. Warm (max 22°C on Tue morning, min 19°C on Mon night). Wind will be generally light.

Mon
18
Tuesday
19
Wednesday
20
Thursday
21
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
1
1
1
1
0
0
1
0
1
1
2
0
0
1
1
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
9
0.7
ESE
9
0.8
ESE
9
0.7
ESE
8
0.7
ESE
9
0.5
SE
11
0.6
SE
11
0.6
SE
11
0.6
SE
11
0.6
SE
10
0.7
SE
10
0.7
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
9
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
Wave Graph
Metric surfscale
Energy kJ
101
80
86
72
80
55
73
73
72
69
112
98
148
145
163
163
122
120
115
115
100
80
80
81
Wind (km/h)
15
SSW
10
WSW
5
WNW
5
W
5
WNW
10
SW
15
SW
20
SW
15
SW
10
WSW
10
W
10
WNW
5
WNW
10
SW
15
SW
15
WSW
5
SW
0
SE
0
N
0
NNE
10
NE
10
ENE
10
W
5
NNW
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
glassy
glassy
glassy
cross
cross
cross-off
glassy
High Tide
6:59PM1.44m
5:47AM1.59m
7:42PM1.43m
6:25AM1.53m
8:30PM1.40m
7:08AM1.44m
Low Tide
00:11AM0.90m
12:51PM0.07m
00:54AM0.93m
1:34PM0.12m
1:49AM0.96m
2:22PM0.22m
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
light rain
light rain
mod rain
light rain
light rain
light rain
heavy rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:41
4:41
4:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:45
6:45
6:46
1
1
7
3
2
2
11
20
Temp °C
22
21
20
19
19
21
22
22
22
21
20
19
19
22
21
21
21
21
20
20
20
19
21
19
21
21
21
20
20
20
20
20
22
22
21
20
20
23
21
22
23
25
23
23
22
20
23
21
Swell 1
Height (m)
Direction
Period (s)
0.8
ESE
9
0.7
ESE
9
0.8
ESE
9
0.7
ESE
8
0.7
ESE
9
0.5
E
8
0.6
E
9
0.6
SE
11
0.6
SE
11
0.6
SE
10
0.7
SE
10
0.7
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.9
SE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
0.8
ESE
10
1
S
6
1.5
SSW
6
1.7
SSW
7
1.7
SSW
7
Energy kJ
101
80
86
72
80
37
60
73
72
69
112
98
148
145
163
163
122
120
115
115
71
177
241
286
Swell 2
Height (m)
Direction
Period (s)
0.2
SSE
7
0.3
SSE
7
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.5
SE
11
0.6
SE
11
0.6
E
9
0.5
E
9
0.5
E
9
0.5
E
9
0.5
E
10
0.1
S
7
0.1
S
7
0.1
S
7
0.2
S
7
0.3
SSW
7
0.3
S
7
0.4
S
7
0.6
S
5
0.8
SW
6
0.7
ESE
10
0.7
ESE
10
0.7
ESE
10
Energy kJ
5
10
17
17
39
55
73
63
41
42
42
54
1
1
1
4
9
8
14
16
54
80
80
81
Swell 3
Height (m)
Direction
Period (s)
0.3
SE
11
0.3
SE
10
0.3
ESE
10
0.1
S
8
0.1
S
8
0.1
S
8
0.2
S
7
0.1
S
7
0.2
S
6
0.2
S
7
0.8
ESE
9
Energy kJ
19
16
20
1
1
1
4
1
3
4
100
Wind waves
Height (m)
Direction
Period (s)
0.3
SW
2
0.4
SW
3
0.4
SW
3
0.4
SW
3
0.3
SW
3
0.2
WSW
3
0.4
SSW
7
0.5
S
4
1.4
SSW
5
1.7
SSW
6
1.7
SSW
6
Energy kJ
1
2
2
2
1
1
15
7
102
207
239
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
2
2
2
1
Distance (km)
6
6
6
6
6
6
382
382
65
2
2
2
2
6
236
2
6
6
6
6
13
13
2
2
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
2
2
2
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
1
2
2
2
2
2
2
2
3
Header Global
Rating
(10 max)
4
4
4
5
4
4
4
4
4
4
4
4
4
4
5
5
4
4
4
5
5
5
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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