Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 pm 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
24.0° C

1.1°C colder than average for this time of year

Katahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Katahama today (06 Jul):

  • Morning surf: Morning surf (06 Jul, local time) - 2ft (0.6m), 16s period with SE swell.
  • Afternoon surf: Afternoon surf (06 Jul, local time) - 2ft (0.6m), 15s period with SE swell.
  • Evening surf: Evening surf (06 Jul, local time) - 2.5ft (0.8m), 14s period with SE swell.

The current surf forecast for Katahama at 3AM is: 1.1m 7s primary swell from a East-southeast direction and 0.4m 17s secondary swell from a Southeast direction (forecast issued at 08:00pm July 05). An open ocean swell of 0.6m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (06 Jul)2ft (0.6m)16s
Afternoon (06 Jul)2ft (0.6m)15s
Evening (06 Jul)2.5ft (0.8m)14s

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 24mm), heaviest during Sun night. Warm (max 25°C on Tue afternoon, min 20°C on Mon night). Wind will be generally light.

Sun
5
Monday
6
Tuesday
7
Wednesday
8
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
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
2
3
3
4
4
3
4
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
0.5
SE
16
0.6
SE
16
0.6
SSE
15
0.6
SE
15
0.8
SE
14
0.8
SE
14
0.8
SE
13
0.8
SE
13
0.9
SE
13
0.8
SSE
16
0.9
SSE
16
1.4
SE
15
1.4
SE
15
1.9
SE
15
2
SE
16
1.7
SSE
16
1.8
SSE
15
1.7
SSE
15
2.3
SSE
17
2.4
SSE
17
Wave Graph
Metric surfscale
Energy kJ
113
113
110
110
124
153
144
171
231
221
212
235
265
322
441
860
881
1654
1953
1479
1507
1350
3212
3194
Wind (km/h)
15
ESE
15
E
10
ESE
15
E
15
NE
20
ENE
15
ENE
20
NE
20
NE
20
NE
20
NE
20
NE
20
NE
15
NE
20
ENE
10
E
10
SE
10
ESE
5
E
5
NNE
10
NNE
10
ENE
10
SE
15
SE
Wind State
on
cross-on
on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
on
on
cross-on
cross-off
cross-off
cross-on
on
on
High Tide
9:32PM1.58m
9:25AM1.30m
10:17PM1.55m
10:51AM1.20m
11:07PM1.52m
12:53PM1.16m
Low Tide
3:59AM0.77m
3:36PM0.64m
5:07AM0.72m
4:27PM0.81m
6:22AM0.66m
light rain
rain showers
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
clear
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
<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>
7:02
7:02
7:02
7:02
 mm
1
1
2
3
3
1
1
3
1
2
1
2
3
1
Temp °C
23
23
22
22
21
22
22
21
21
21
21
21
20
21
23
25
24
24
23
22
22
24
25
25
Feels °C
25
24
24
23
22
22
23
21
21
21
21
21
19
21
22
26
26
26
25
24
24
26
26
26
Swell 1
Height (m)
Direction
Period (s)
0.6
SW
7
0.6
SW
7
0.6
SW
7
0.6
SW
7
0.6
SW
6
0.6
SE
16
0.6
SSE
15
0.6
SE
15
0.8
SE
14
0.8
SE
14
0.8
SE
13
0.8
SE
13
0.9
SE
13
0.8
SSE
16
0.9
SSE
16
1.4
SE
15
1.4
SE
15
1.9
SE
15
2
SE
16
1.7
SSE
16
1.8
SSE
15
1.7
SSE
15
2.3
SSE
17
2.4
SSE
17
Energy kJ
35
36
28
27
27
153
144
171
231
221
212
235
265
322
441
860
881
1654
1953
1479
1507
1350
3212
3194
Swell 2
Height (m)
Direction
Period (s)
0.2
E
11
0.2
E
11
0.2
ESE
11
0.4
SE
17
0.5
SE
16
0.4
SW
6
0.4
SW
6
0.5
SE
12
0.4
SW
6
0.5
SE
11
0.5
SE
11
0.6
SSE
16
0.5
SE
17
0.8
SE
12
0.8
SE
12
0.3
SW
6
0.3
SW
7
0.3
SW
7
0.4
SSE
22
0.9
SSE
21
1
SSE
20
1.4
SSE
18
1.5
SSE
18
0.6
S
22
Energy kJ
9
9
11
107
124
14
14
68
14
59
58
173
147
169
197
6
7
7
183
613
761
1288
1332
326
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
15
0.1
SE
19
0.2
SSE
15
0.2
ESE
11
0.2
E
11
0.2
SSW
8
0.4
SE
12
0.4
SW
6
0.1
S
7
0.4
SW
6
0.4
SW
6
0.3
SW
6
0.3
SW
6
0.3
SW
7
0.3
SW
7
0.2
SSE
20
0.3
SW
7
0.3
SW
7
0.9
ESE
7
0.9
ESE
8
Energy kJ
9
14
22
11
9
6
37
14
1
9
10
6
6
7
7
37
7
7
91
99
Wind waves
Height (m)
Direction
Period (s)
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
1.1
ESE
7
1.2
ESE
7
1.2
ESE
5
1.4
ESE
5
1.3
E
5
1.2
E
6
1.1
E
6
1.1
E
6
1.1
ESE
6
1
ESE
6
0.9
ESE
6
0.9
ESE
8
1
E
8
Energy kJ
113
113
110
110
118
118
114
111
131
81
98
95
91
85
80
80
74
70
109
134
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
2
2
2
1
1
1
2
2
3
3
1
3
3
4
4
4
5
1
Distance (km)
373
104
13
85
85
85
103
13
13
85
85
85
103
13
13
13
85
104
2
2
2
13
13
85
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
1
1
1
2
2
1
1
1
2
3
3
1
3
4
4
5
5
1
Best forecast wave conditions in Japan
Rating
(10 max)
1
1
1
1
1
1
2
2
2
2
3
3
3
3
4
3
4
3
4
5
5
5
5
5
Header Global
Rating
(10 max)
9
8
7
6
6
5
5
5
5
5
6
8
8
8
7
6
5
5
5
7
9
9
9
8
  • 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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