Katahama Surf Break

Lat Long: 34.72° N 138.22° E

Katahama 48 hour detailed Surf Forecast

Issued: 8 pm 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
27.1°C
0.0° 

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

Surf Forecasts:

How big are the waves at Katahama today (09 Sep):

  • Evening surf: Evening surf (09 Sep, local time) - 1.5ft (0.4m), 10s period with SE swell.

The current surf forecast for Katahama at 12AM is: 0.4m 10s primary swell from a Southeast direction and 0.3m 9s secondary swell from a East direction (forecast issued at 08:00pm September 08). An open ocean swell of 3.0m 10s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (09 Sep)--
Afternoon (09 Sep)--
Evening (09 Sep)1.5ft (0.4m)10s

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

16 DaysHourly
Print Table

Short Range Forecast

Heavy rain (total 109mm), heaviest during Tue night. Warm (max 28°C on Wed morning, min 20°C on Thu morning). Wind will be generally light.

Tue
8
Wednesday
9
Thursday
10
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
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
Wave
Height (m)
Direction
Period (s)
1.1
SE
8
0.4
SE
10
0.4
SE
10
0.3
ESE
10
0.3
ESE
10
0.3
ESE
10
0.2
E
17
0.2
E
17
0.2
E
16
0.2
E
16
0.2
E
16
0.2
E
16
1.1
E
6
1.3
E
6
0.3
ESE
15
0.3
ESE
15
1.1
S
8
1
S
8
Wave Graph
Metric surfscale
Energy kJ
140
25
25
19
19
18
23
22
21
21
21
27
74
122
43
42
156
129
Wind (km/h)
15
S
20
SSW
25
SW
20
SW
15
WSW
20
SW
25
SW
20
SW
15
SSW
5
SSW
15
ENE
20
NE
20
NE
25
NE
25
NE
25
NE
25
NE
20
NE
Wind State
cross-on
cross-on
cross
cross
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross
High Tide
4:35PM1.60m
3:41AM1.53m
4:55PM1.64m
4:20AM1.61m
5:12PM1.68m
Low Tide
10:29PM0.99m
10:23AM0.46m
10:52PM0.87m
10:53AM0.46m
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
light rain
light rain
light rain
mod rain
mod rain
light rain
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
5:24
—
—
—
—
—
—
—
5:24
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
—
—
—
—
—
—
—
6:02
—
—
—
—
—
—
—
6:01
—
 mm
5
7
10
8
6
5
4
5
5
5
8
5
2
2
7
6
1
—
Temp °C
27
27
27
27
26
27
28
28
27
26
22
21
21
21
20
20
20
21
Feels °C
31
30
29
29
29
29
29
31
31
31
23
20
20
20
19
18
18
20
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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View detailed surf forecast for Katahama at:
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