Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 am 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
23.3° C

1.4°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 (03 Jul):

  • Morning surf: Morning surf (03 Jul, local time) - 1ft (0.3m), 9s period with ESE swell.
  • Afternoon surf: Afternoon surf (03 Jul, local time) - 1ft (0.3m), 9s period with ESE swell.
  • Evening surf: Evening surf (03 Jul, local time) - 1ft (0.3m), 9s period with ESE swell.

The current surf forecast for Katahama at 10AM is: 0.3m 9s primary swell from a East-southeast direction and 0.7m 4s secondary swell from a East direction (forecast issued at 02:00am July 03). An open ocean swell of 1.3m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (03 Jul)1ft (0.3m)9s
Afternoon (03 Jul)1ft (0.3m)9s
Evening (03 Jul)1ft (0.3m)9s

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 Sat night. Warm (max 23°C on Sat morning, min 20°C on Sat night). Wind will be generally light.

Friday
3
Saturday
4
Sunday
5
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
6 PM
9 PM
Rating
(10 max)
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
0.3
ESE
9
0.7
ESE
9
0.3
ESE
9
0.3
ESE
9
0.7
E
4
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
E
9
0.3
ESE
9
0.3
E
9
0.3
E
9
0.3
E
8
0.2
ESE
9
0.2
ESE
9
0.7
E
4
0.9
ESE
4
0.9
ESE
5
1
ESE
5
1.1
ESE
6
1.2
ESE
6
1.1
ESE
6
Wave Graph
Metric surfscale
Energy kJ
15
82
16
16
16
16
16
16
16
16
14
16
14
14
13
7
8
12
28
37
54
77
90
88
Wind (km/h)
10
NNW
5
SSE
10
ENE
15
ENE
10
NE
10
NE
5
ENE
5
ESE
5
ENE
5
NE
5
ENE
5
E
10
SE
5
ESE
10
ENE
15
NE
20
ENE
15
ENE
15
ENE
15
NE
15
NE
15
NE
15
NE
15
NE
Wind State
cross-off
glassy
cross-on
cross
cross
cross
cross-on
glassy
glassy
glassy
cross
cross-on
on
on
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
6:41AM1.58m
8:13PM1.61m
7:29AM1.51m
8:51PM1.60m
8:22AM1.41m
Low Tide
1:19AM0.91m
1:31PM0.24m
2:07AM0.86m
2:10PM0.35m
3:00AM0.81m
2:52PM0.48m
part cloud
cloud
light rain
light rain
cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
light rain
light rain
mod rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:37
4:37
4:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:04
7:02
 mm
1
1
1
5
6
4
Temp °C
23
23
22
21
21
22
22
22
22
22
21
23
23
22
21
20
20
21
21
22
22
22
22
22
Feels °C
26
27
24
22
22
23
24
24
25
25
23
25
25
25
23
20
20
21
21
22
23
22
23
23
Swell 1
Height (m)
Direction
Period (s)
1.8
SW
8
1.7
SW
8
1.5
SW
8
1.3
SW
7
1.1
SW
7
1
SW
7
0.9
SW
7
0.9
SW
7
0.6
SW
7
0.7
SW
7
0.6
SSW
7
0.6
SSW
7
0.4
SW
6
0.5
S
6
0.4
SW
6
0.4
SE
4
0.4
SE
4
0.3
SW
6
0.2
ESE
11
0.3
ESE
10
0.3
ESE
10
0.4
SW
6
0.4
SW
6
0.4
SW
6
Energy kJ
416
346
244
176
136
102
73
69
38
46
30
29
15
20
10
4
4
6
11
18
18
10
14
14
Swell 2
Height (m)
Direction
Period (s)
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.3
ESE
9
0.4
S
5
0.3
ESE
9
0.3
E
9
0.3
ESE
9
0.3
SSE
5
0.3
E
9
0.3
E
8
0.3
SW
6
0.3
SW
6
0.2
ESE
11
0.2
WSW
6
0.2
SSW
5
0.4
SW
5
0.3
ESE
10
0.3
ESE
10
0.3
ESE
10
Energy kJ
15
16
16
16
16
16
16
16
9
16
14
16
5
14
13
6
6
11
3
3
7
19
20
20
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.3
ESE
9
0.2
ESE
12
0.2
ESE
12
0.2
ESE
12
0.3
E
9
0.2
ESE
12
0.2
ESE
11
0.2
ESE
9
0.2
ESE
9
0.2
ESE
8
0.1
SE
8
0.2
WSW
6
0.1
SE
10
0.2
SSW
5
0.1
E
8
0.1
SE
15
Energy kJ
14
14
14
14
14
14
14
14
16
14
14
14
14
14
13
7
8
7
3
3
4
2
1
9
Wind waves
Height (m)
Direction
Period (s)
0.7
ESE
9
0.5
E
4
0.6
E
4
0.7
E
4
0.6
E
4
0.5
E
4
0.4
E
4
0.3
E
3
0.3
E
3
0.2
E
3
0.4
SE
3
0.4
SE
4
0.4
ESE
4
0.4
ENE
9
0.7
E
4
0.9
ESE
4
0.9
ESE
5
1
ESE
5
1.1
ESE
6
1.2
ESE
6
1.1
ESE
6
Energy kJ
82
7
10
14
11
7
4
2
2
1
3
4
5
26
12
28
37
54
77
90
88
Nearest Offshore or Glassy
Rating
(10 max)
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
Distance (km)
2
2
150
94
145
13
13
13
13
13
179
208
208
208
208
208
208
208
208
373
397
236
138
211
Best forecast wave conditions in Shizuoka
Rating
(10 max)
1
2
1
1
1
1
1
1
Best forecast wave conditions in Japan
Rating
(10 max)
2
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
Header Global
Rating
(10 max)
6
6
6
9
9
9
6
4
9
5
6
5
7
6
6
6
5
4
5
5
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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