Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 am 11 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
23.9° C
1.8° 

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


Time (JST) & DateWave HeightWave Period
Morning (11 Jul)--
Afternoon (11 Jul)--
Evening (11 Jul)0.5ft (0.2m)12s

Table - waves today at Katahama. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 2mm), mostly falling on Mon afternoon. Warm (max 27°C on Mon morning, min 23°C on Sat night). Wind will be generally light.

Saturday
11
Sunday
12
Monday
13
Tue
14
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
0
0
0
0
0
0
0
1
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)
0.4
E
10
4
S
17
4
SSW
17
4
SSW
17
4
SSW
16
0.2
ESE
12
0.4
E
9
0.4
E
9
0.4
SE
10
0.4
E
9
0.4
E
9
0.4
E
9
0.4
E
9
0.4
E
9
0.3
SE
10
0.3
SE
10
0.3
SE
13
0.3
SE
10
0.3
SE
10
0.3
SE
11
0.3
SE
12
0.3
SE
12
0.3
E
9
0.3
E
9
Wave Graph
Metric surfscale
Energy kJ
29
0
0
0
0
14
27
27
27
26
26
25
25
26
17
16
27
16
16
19
22
22
15
14
Wind (km/h)
5
W
15
SW
20
SSW
20
SW
20
SW
10
WSW
10
WSW
5
W
5
WSW
5
S
5
SSE
10
SW
10
SSW
10
WSW
15
WSW
15
W
15
W
5
NW
5
ENE
5
E
10
E
5
N
5
NNE
0
N
Wind State
cross-off
cross
cross
cross
cross
cross-off
cross-off
cross-off
glassy
glassy
glassy
cross
cross
cross-off
cross-off
cross-off
cross-off
off
cross
glassy
cross-on
glassy
glassy
glassy
High Tide
4:50PM1.41m
2:51AM1.52m
5:24PM1.48m
3:35AM1.55m
5:52PM1.53m
Low Tide
9:36AM0.37m
9:42PM1.16m
10:18AM0.29m
10:32PM1.15m
10:54AM0.23m
11:09PM1.10m
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
rain showers
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:41
4:41
4:43
4:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:01
7:01
7:00
7:00
 mm
1
1
Temp °C
23
25
26
26
25
24
24
23
24
25
26
26
26
25
25
26
26
26
27
27
26
26
26
25
Feels °C
26
27
26
26
25
26
27
26
28
29
30
29
29
27
27
28
27
29
30
30
29
30
30
29
  • 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
How to use the Wavefinder 

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