Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 am 20 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
21.5° C

2.1°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.

Surf Forecasts:

How big are the waves at Katahama today (20 Jun):

  • Morning surf: Morning surf (20 Jun, local time) - 1ft (0.3m), 10s period with SE swell.
  • Afternoon surf: Afternoon surf (20 Jun, local time) - 1ft (0.3m), 10s period with SE swell.
  • Evening surf: Evening surf (20 Jun, local time) - 1.5ft (0.4m), 10s period with SE swell.

The current surf forecast for Katahama at 12PM is: 0.3m 10s primary swell from a Southeast direction and 0.6m 4s secondary swell from a Southeast direction (forecast issued at 08:00am June 20). An open ocean swell of 0.9m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & DateWave HeightWave Period
Morning (20 Jun)1ft (0.3m)10s
Afternoon (20 Jun)1ft (0.3m)10s
Evening (20 Jun)1.5ft (0.4m)10s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
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Short Range Forecast

Heavy rain (total 34mm), heaviest during Sat night. Warm (max 29°C on Sun morning, min 20°C on Sat afternoon). Winds increasing (light winds from the ENE on Sat afternoon, strong winds from the W by Sun night).

Saturday
20
Sunday
21
Monday
22
Tue
23
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)
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.4
SE
10
1
SE
5
1.3
S
5
1.4
SW
6
0.5
ESE
6
0.3
SE
11
0.4
ESE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
11
Wave Graph
Metric surfscale
Energy kJ
15
15
15
15
24
23
42
90
114
18
19
32
21
30
31
25
16
16
16
16
16
16
16
29
Wind (km/h)
10
NE
10
ENE
10
NE
15
ENE
10
ENE
10
E
20
SSE
15
SW
10
WSW
15
WSW
30
W
35
W
40
W
40
WNW
40
W
35
WNW
25
WNW
20
WNW
25
WNW
25
W
35
WNW
20
W
20
W
10
NNE
Wind State
cross
cross
cross
cross-on
cross
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
7:58AM1.41m
9:38PM1.52m
9:00AM1.30m
10:28PM1.51m
10:23AM1.19m
11:22PM1.49m
Low Tide
2:47PM0.38m
3:51AM0.85m
3:36PM0.52m
5:03AM0.79m
4:30PM0.68m
cloud
cloud
light rain
light rain
light rain
light rain
light rain
mod rain
light rain
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:33
—
—
—
—
—
—
4:33
—
—
—
—
—
—
—
4:33
—
—
—
—
—
—
—
4:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
7:02
—
—
—
—
—
—
—
7:02
—
—
—
—
—
—
—
7:02
—
—
7:02
 mm
—
—
1
4
3
5
4
10
5
2
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
22
22
22
21
20
21
22
22
22
24
29
28
26
24
23
22
22
25
29
29
26
24
23
22
Feels °C
23
23
24
22
22
23
23
24
24
26
27
24
21
18
18
18
20
23
26
26
21
22
21
22
Swell 1
Height (m)
Direction
Period (s)
0.8
SSW
7
0.7
SW
7
0.9
SSW
7
0.8
SW
7
0.8
SW
6
0.6
SW
6
0.6
SW
6
0.3
SE
9
0.7
SE
6
0.5
ESE
6
0.3
ESE
6
0.4
ESE
9
0.4
SE
9
1.8
SW
8
0.4
SE
9
0.4
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
11
Energy kJ
61
47
66
54
49
31
23
13
31
18
7
32
21
435
31
25
16
16
16
16
16
16
16
29
Swell 2
Height (m)
Direction
Period (s)
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.4
SE
10
0.4
SE
9
0.2
SSE
12
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
11
0.3
SE
11
0.4
SE
9
0.2
E
12
0.2
E
12
0.2
E
12
0.2
E
12
0.2
E
12
0.2
E
11
0.2
E
11
0.2
E
10
0.2
E
10
0.2
E
10
Energy kJ
15
15
15
15
24
23
23
14
13
13
13
19
19
30
11
11
11
11
11
10
9
9
8
8
Swell 3
Height (m)
Direction
Period (s)
0.2
E
8
0.2
E
8
0.2
E
9
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.1
E
8
0.2
SSE
12
0.2
SSE
11
0.3
SE
11
0.2
E
10
0.2
E
12
0.2
E
12
0.1
SE
16
0.1
SE
16
0.1
SE
16
0.1
S
13
0.1
S
13
0.1
S
12
0.1
S
12
0.1
S
11
0.1
S
11
0.1
S
11
Energy kJ
5
6
6
6
6
6
6
1
13
12
19
8
11
11
10
10
10
3
3
3
3
2
2
2
Wind waves
Height (m)
Direction
Period (s)
0.3
E
2
0.3
E
2
0.6
SE
4
0.5
SE
4
0.5
SE
4
0.8
SE
4
1
SE
5
1.3
S
5
1.4
SW
6
2.1
SW
7
2.1
SW
8
2.2
SW
8
2.5
WSW
8
1.3
WNW
6
2.1
WSW
8
2.4
WSW
6
2.5
WSW
7
2.4
W
7
2.4
W
7
2.4
WSW
7
2.3
W
6
2.2
W
6
2.1
W
6
1.8
W
6
Energy kJ
1
1
10
7
9
22
42
90
114
393
512
603
759
100
547
450
545
530
530
473
419
380
346
247
Nearest Offshore or Glassy
Tainohama
Shikoku
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Kisami-Ohama Beach
Shizuoka
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Hashikui Bay
Shikoku
Hashikui Bay
Shikoku
Suruga Bay
Shizuoka
Susuki
Shizuoka
Sakawa River
Kanagawa
Gomoda
Shikoku
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Sakawa River
Kanagawa
Suruga Bay
Shizuoka
Keta Reef Oshima
Izu Islands
Niijima - Awaii
Izu Islands
Keta Reef Oshima
Izu Islands
Sakawa River
Kanagawa
Niijima - Awaii
Izu Islands
Kamogawa
Chiba
Niijima - Awaii
Izu Islands
Rating
(10 max)
1
1
1
1
1
1
2
2
1
1
1
1
1
1
2
2
2
2
3
2
2
3
1
3
Distance (km)
352
13
13
65
13
13
355
355
2
6
103
334
103
103
103
103
2
104
104
104
103
104
178
104
Best forecast wave conditions in Shizuoka
Omaezaki
Omaezaki
Kisami-Ohama Beach
Omaezaki
Omaezaki
Akabane Long Beach
Akabane Long Beach
Suruga Bay
Rating
(10 max)
1
1
1
1
1
2
3
2
Best forecast wave conditions in Japan
Niyodo Rivermouth
Shikoku
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Kaiser's (Hachijojima Island)
Izu Islands
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Hashikui Bay
Shikoku
Osaki Point
Shikoku
Niyodo Rivermouth
Shikoku
Akabane Long Beach
Shizuoka
Kaifu Rivermouth
Shikoku
Osaki Point
Shikoku
Niyodo Rivermouth
Shikoku
Inamura Point
Kanagawa
Matsube Bay
Chiba
Matsube Bay
Chiba
Chikura
Chiba
Mera
Chiba
Niijima - Habushiura
Izu Islands
Tsurigasaki Surfing Beach (Tokyo 2020)
Chiba
Sakawa River
Kanagawa
Chikura
Chiba
Kuminatu
Chiba
Niijima - Habushiura
Izu Islands
Rating
(10 max)
1
1
1
1
1
1
2
3
4
3
3
2
1
3
3
3
4
4
3
2
2
4
2
3
Header Global
Amanzimtoti
South Africa
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Buchupureo
Chile
Trial Harbour
Australia
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Etang-Sale
Reunion
Etang-Sale
Reunion
Etang-Sale
Reunion
Maconde
Mauritius
Saint Leu
Reunion
Tora Point
New Zealand
Tora Point
New Zealand
El Olon de Ilo
Peru
El Olon de Ilo
Peru
Rating
(10 max)
4
6
5
5
5
5
5
5
8
9
9
9
8
8
6
8
8
7
6
8
6
6
5
5
  • 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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