Katahama surfForecast / Shizuoka / Japan

information circle48hr Weather and Surf, issued 8 am Friday 01 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
17.8° 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 1PM is: 1.7m 8s primary swell from a East-southeast direction (forecast issued at 08:00am May 01). An open ocean swell of 3.0m 9s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 2.

Time (JST) & DateWave HeightWave Period
Morning (01 May)5.5ft (1.7m)8s
Afternoon (01 May)5ft (1.6m)9s
Evening (01 May)3.5ft (1.1m)8s

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 64mm), heaviest during Sun night. Warm (max 24°C on Sat afternoon, min 14°C on Fri night). Winds decreasing (strong winds from the W on Fri night, calm by Sat night).

Friday
1
Saturday
2
Sunday
3
Mon
4
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)
0
1
2
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
2.2
ESE
7
1.7
SE
8
1.7
ESE
8
1.6
SE
9
1.5
SE
9
1.1
SE
8
0.8
SE
9
0.6
ESE
9
0.4
ESE
10
0.4
ESE
10
0.3
SE
10
0.3
SE
11
0.3
SE
10
0.4
ESE
9
0.4
ESE
9
0.5
ESE
9
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.5
ESE
9
0.8
SSW
6
1
SSW
6
1.3
SSW
6
0.5
ESE
9
Wave Graph
Metric surfscale
Energy kJ
512
361
433
402
320
181
91
54
35
37
17
18
16
33
32
49
52
52
51
50
50
63
107
49
Wind (km/h)
35
NE
20
NE
5
NNE
25
W
40
W
45
W
45
W
45
W
40
W
35
W
35
W
35
W
30
W
15
WNW
5
NW
10
NE
5
NE
5
ESE
15
S
20
SW
20
SW
20
SSW
20
SSW
30
SSW
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
glassy
on
cross-on
cross
cross
cross
cross
cross
High Tide
4:23AM1.53m
5:28PM1.44m
4:47AM1.57m
6:03PM1.45m
5:13AM1.59m
6:40PM1.44m
Low Tide
11:04AM0.16m
11:01PM0.69m
11:32AM0.09m
11:28PM0.74m
12:03PM0.05m
11:59PM0.79m
mod rain
heavy rain
heavy rain
cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
cloud
light rain
light rain
heavy rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:56
4:56
4:54
4:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:30
6:31
6:31
6:32
9
17
13
1
2
18
Temp °C
15
16
16
18
16
14
14
15
14
18
22
24
22
19
18
18
17
19
20
21
20
19
18
19
10
13
16
15
9
5
5
6
6
11
15
17
16
15
16
16
16
18
19
19
18
17
16
16
Swell 1
Height (m)
Direction
Period (s)
0.4
NNE
5
1.7
SE
8
3
SSW
9
1.6
SE
9
1.5
SE
9
1.1
SE
8
0.8
SE
9
0.6
ESE
9
0.4
ESE
10
0.4
ESE
10
0.3
SE
10
0.3
ESE
8
0.3
ESE
9
0.4
ESE
9
1.2
SW
7
1.1
SW
7
0.8
SW
6
0.7
SW
6
0.6
SW
6
0.5
ESE
9
0.5
ESE
9
0.5
ESE
9
0.5
ESE
9
0.5
ESE
9
Energy kJ
8
361
1604
402
320
181
91
54
35
37
17
14
16
33
147
99
56
36
23
50
50
50
50
49
Swell 2
Height (m)
Direction
Period (s)
1.3
E
9
1.7
ESE
8
0.3
ESE
9
0.3
E
9
0.3
E
9
0.3
SE
11
0.3
SE
10
0.4
ESE
9
0.5
ESE
9
0.5
ESE
10
0.5
ESE
10
0.5
ESE
10
0.1
S
7
0.1
S
6
Energy kJ
247
433
16
14
15
18
16
32
49
52
52
51
1
1
Swell 3
Height (m)
Direction
Period (s)
0.2
S
7
0.2
S
7
0.2
S
6
0.2
S
6
0.1
S
6
Energy kJ
3
3
3
3
1
Wind waves
Height (m)
Direction
Period (s)
2.2
ESE
7
1.6
SSW
7
3.5
SSW
9
3
SSW
9
3
SW
9
3.5
SW
9
3.5
WSW
9
4
WSW
9
3.5
WSW
9
3
WSW
8
2.5
WSW
9
2.2
WSW
6
2
WSW
6
1.7
WSW
6
0.5
WNW
4
0.4
NW
4
0.7
SW
6
0.8
SSW
6
1
SSW
6
1.3
SSW
6
1.6
SSW
6
Energy kJ
512
247
1884
1462
1283
1814
2210
2568
1974
1150
994
381
286
171
12
4
35
40
63
107
197
Nearest Offshore or Glassy
Rating
(10 max)
1
3
3
1
2
1
1
1
2
1
1
3
1
1
1
1
1
1
1
2
1
1
4
4
Distance (km)
103
13
103
2682
351
351
351
334
103
127
397
104
94
2
2
2
2
13
65
827
827
658
619
619
Best forecast wave conditions in Shizuoka
Rating
(10 max)
3
1
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
4
4
2
1
1
1
4
3
1
3
4
4
2
2
1
1
1
1
4
4
Header Global
Rating
(10 max)
6
6
7
7
6
5
5
5
9
9
7
5
5
4
4
4
4
5
4
5
5
5
4
4
  • 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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