Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 pm 01 Nov 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
22.5°C
0.3° 

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 (02 Nov):

  • Evening surf: Evening surf (02 Nov, local time) - 6ft (1.9m), 15s period with SSE swell.

The current surf forecast for Katahama at 12AM is: 1.7m 14s primary swell from a South-southeast direction and 0.5m 10s secondary swell from a East direction (forecast issued at 08:00pm November 01). An open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 4.

Time (JST) & DateWave HeightWave Period
Morning (02 Nov)--
Afternoon (02 Nov)--
Evening (02 Nov)6ft (1.9m)15s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Mon afternoon. Warm (max 20°C on Mon morning, min 14°C on Mon night). Winds increasing (calm on Tue morning, fresh winds from the NE by Wed afternoon).

Sun
1
Monday
2
Tuesday
3
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)
3
3
4
4
3
3
3
2
2
2
2
2
2
2
2
2
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2
SSE
15
1.9
SSE
15
1.7
SSE
14
1.6
SSE
14
1.6
SSE
13
1.5
SSE
13
1.4
SSE
13
1.4
SSE
13
1.3
SSE
13
1.2
SSE
12
1.2
SSE
12
1.2
SSE
12
1.2
SSE
12
1.1
SSE
12
1.3
SSE
12
1.3
SSE
12
1.3
SSE
13
1.4
SSE
13
Wave Graph
Metric surfscale
Energy kJ
1626
1568
1244
957
863
756
649
640
504
417
397
390
390
383
473
525
615
722
Wind (km/h)
15
W
20
W
15
W
10
W
15
W
5
WSW
15
WSW
25
WSW
20
W
15
NW
10
NW
15
NW
10
NW
10
NW
5
S
10
SW
5
W
10
N
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
glassy
cross
glassy
cross-off
High Tide
8:45PM1.35m
12:22PM1.42m
10:41PM1.22m
1:29PM1.47m
Low Tide
4:12PM1.16m
4:31AM0.57m
6:22PM1.10m
5:56AM0.65m
7:53PM0.95m
clear
clear
clear
clear
clear
part cloud
cloud
mod rain
rain showers
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
6:07
—
—
—
—
—
—
—
6:07
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
—
—
4:52
—
—
—
—
—
—
—
4:52
—
—
 mm
—
—
—
—
—
—
—
8
4
—
—
—
—
—
—
—
—
—
Temp °C
19
17
18
17
17
18
20
19
18
16
15
14
14
16
18
19
19
18
Feels °C
15
13
15
14
14
16
19
17
16
14
14
12
12
15
18
18
19
17
  • 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 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Katahama surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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