Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 am Sunday 31 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
20.6° C
(Which is 1.6°C colder than average for this time of year)

How big are the waves at Katahama today (31 May):

  • Morning surf: Morning surf (31 May, local time) - 2ft (0.6m), 14s period with S swell.
  • Afternoon surf: Afternoon surf (31 May, local time) - 2ft (0.6m), 10s period with ESE swell.
  • Evening surf: Evening surf (31 May, local time) - 3.5ft (1.1m), 12s period with S swell.

The current surf forecast for Katahama at 1PM is: 0.9m 13s primary swell from a South direction and 0.6m 10s secondary swell from a East direction (forecast issued at 08:00am May 31). The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (31 May)2ft (0.6m)14s
Afternoon (31 May)2ft (0.6m)10s
Evening (31 May)3.5ft (1.1m)12s

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 Tue night. Warm (max 26°C on Sun afternoon, min 19°C on Sun night). Winds increasing (calm on Mon night, fresh winds from the NE by Tue night).

Sunday
31
Monday
1
Tuesday
2
Wed
3
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
2
0
0
1
0
2
2
2
1
0
0
1
1
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)
0.7
E
10
0.6
S
14
0.8
S
13
0.6
ESE
10
0.6
E
10
1.1
S
12
0.5
E
10
1.1
S
11
1
S
11
1
S
11
1
S
11
0.8
S
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
9
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.9
SE
6
1.1
SE
6
1.6
SE
6
Wave Graph
Metric surfscale
Energy kJ
104
142
225
78
71
336
49
303
233
229
224
121
46
45
44
43
50
50
49
49
49
54
80
178
Wind (km/h)
5
NNW
5
ESE
5
SW
15
S
25
SW
20
SW
15
WSW
10
W
10
W
5
WSW
15
SSW
20
SSW
10
SSW
5
SSW
5
N
0
NE
10
NE
15
E
15
ESE
10
ESE
10
ESE
10
SE
15
E
20
ENE
cross-off
cross-on
glassy
cross-on
cross
cross
cross-off
cross-off
cross-off
glassy
cross
cross
cross
glassy
glassy
glassy
cross
cross-on
on
cross-on
cross-on
on
cross-on
cross-on
High Tide
4:15AM1.58m
6:05PM1.45m
4:46AM1.60m
6:41PM1.47m
5:21AM1.61m
7:19PM1.48m
Low Tide
11:19AM0.10m
11:14PM0.95m
11:52AM0.07m
11:50PM0.96m
12:27PM0.07m
00:33AM0.96m
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:35
4:35
4:35
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:52
6:53
6:54
6:54
1
2
8
Temp °C
20
23
25
26
21
20
19
19
19
22
23
22
22
21
21
20
20
21
22
22
22
21
20
19
20
23
25
23
19
19
19
19
19
23
22
20
22
22
22
21
20
21
22
22
23
22
21
18
Swell 1
Height (m)
Direction
Period (s)
0.7
E
10
0.7
E
10
0.8
S
13
1
S
13
0.6
E
10
1.1
S
12
1.3
S
6
1.1
SSW
6
1
S
11
1
S
11
1
S
11
1.2
SSW
13
1.6
S
13
1.7
SSW
13
1.8
SSW
13
1.8
SSW
14
1.9
SSW
14
2
SSW
13
2
SSW
13
2
SSW
13
2
SSW
13
1.9
SSW
13
1.8
SSW
13
2.1
SSW
14
Energy kJ
104
102
225
319
71
336
122
83
233
229
224
539
919
1058
1106
1161
1286
1398
1422
1401
1380
1207
1093
1748
Swell 2
Height (m)
Direction
Period (s)
0.5
SW
4
0.6
S
14
0.6
E
10
0.6
ESE
10
0.3
SE
12
0.6
E
10
1.1
S
12
1.1
S
11
0.9
SSW
5
0.9
SSW
15
0.9
S
14
0.8
S
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
9
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.5
E
10
0.4
E
9
0.8
SW
16
1.3
SW
15
Energy kJ
7
142
74
78
22
75
333
303
40
370
311
121
46
45
44
43
50
50
49
49
49
28
322
809
Swell 3
Height (m)
Direction
Period (s)
0.4
S
15
0.4
SW
6
0.4
SW
6
0.3
SE
12
0.1
S
8
0.3
SE
12
0.5
E
10
0.5
E
10
0.7
S
15
0.6
SW
5
0.5
SSW
17
0.5
E
10
0.3
SE
11
0.3
SE
11
0.3
SE
11
0.4
SE
4
0.4
SE
4
0.3
SE
11
0.1
E
16
0.2
ESE
12
0.3
SE
11
Energy kJ
70
9
12
23
1
22
49
49
218
19
159
46
20
19
19
5
7
19
5
13
18
Wind waves
Height (m)
Direction
Period (s)
0.5
W
4
1.4
S
12
1.4
SSW
6
0.5
SW
5
0.4
SSW
4
0.7
SE
5
0.8
SE
5
0.9
SE
6
1.1
SE
6
1.6
SE
6
Energy kJ
7
584
131
10
7
25
41
54
80
178
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
2
2
2
2
2
2
2
2
2
1
3
3
3
4
2
2
4
4
1
1
1
Distance (km)
2
13
2
94
2667
382
2
2
2
2
6
208
6
2
2
2
13
104
104
13
13
127
103
103
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
2
2
2
2
2
2
2
2
1
4
4
4
4
4
4
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
3
2
3
3
4
4
3
4
4
4
4
4
4
4
2
4
4
3
1
2
Header Global
Rating
(10 max)
7
7
7
7
7
6
5
5
5
5
5
5
5
4
5
9
5
5
5
8
5
6
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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