Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 am 21 Jun 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
21.9° C

1.8°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 (21 Jun):

  • Morning surf: Morning surf (21 Jun, local time) - 1ft (0.3m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (21 Jun, local time) - 1ft (0.3m), 9s period with SE swell.
  • Evening surf: Evening surf (21 Jun, local time) - 1.5ft (0.4m), 9s period with SE swell.

The current surf forecast for Katahama at 1PM is: 0.3m 9s primary swell from a Southeast direction and 0.2m 11s secondary swell from a South-southeast direction (forecast issued at 08:00am June 21). An open ocean swell of 2.4m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & DateWave HeightWave Period
Morning (21 Jun)1ft (0.3m)9s
Afternoon (21 Jun)1ft (0.3m)9s
Evening (21 Jun)1.5ft (0.4m)9s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast

Light rain (total 5mm), mostly falling on Sun morning. Warm (max 29°C on Sun afternoon, min 20°C on Mon night). Winds decreasing (strong winds from the W on Sun afternoon, calm by Mon morning).

Sunday
21
Monday
22
Tuesday
23
Wed
24
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
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)
0.4
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.3
SE
10
0.3
SE
10
0.4
SE
10
0.4
SE
10
1.1
E
5
1.1
E
5
1
E
5
1
E
5
0.4
SE
11
1
E
6
0.8
E
5
0.5
E
6
0.3
SE
10
0.4
SE
10
Wave Graph
Metric surfscale
Energy kJ
21
13
13
13
13
31
32
15
16
25
16
16
35
35
51
65
53
53
34
60
36
16
15
37
Wind (km/h)
10
WSW
20
WSW
35
WSW
35
W
45
W
40
W
30
W
25
WNW
15
NW
0
ESE
15
ESE
15
ESE
15
SE
20
ESE
10
E
10
NE
10
NE
10
NE
10
ENE
10
E
5
SE
5
SE
5
ENE
5
NNE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
glassy
on
on
on
on
cross-on
cross
cross
cross
cross-on
cross-on
on
on
glassy
glassy
High Tide
9:00AM1.30m
10:28PM1.51m
10:23AM1.19m
11:22PM1.49m
12:16PM1.14m
00:17AM1.48m
Low Tide
3:51AM0.85m
3:36PM0.52m
5:03AM0.79m
4:30PM0.68m
6:18AM0.71m
5:33PM0.83m
thunderstorm
thunderstorm
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
light rain
light rain
cloud
cloud
part cloud
rain showers
rain showers
cloud
part cloud
part 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
5
1
—
—
—
—
—
—
—
—
—
—
—
—
1
1
—
—
—
1
1
—
—
—
Temp °C
22
24
28
29
26
23
22
22
22
23
23
23
22
22
21
20
21
21
22
22
21
21
21
20
Feels °C
25
26
25
25
20
18
18
20
22
26
23
23
22
22
22
21
22
22
22
23
22
22
23
22
Swell 1
Height (m)
Direction
Period (s)
0.4
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.3
SE
9
0.4
SE
9
0.4
SE
10
0.3
SE
10
0.3
SE
10
1.4
SW
7
1.7
WSW
7
0.3
SE
10
0.4
SE
10
1.3
WSW
6
0.8
SW
7
0.6
SW
6
0.6
SW
6
0.5
SW
6
0.8
E
5
0.7
E
5
0.6
E
5
0.5
E
6
0.4
ENE
10
0.5
E
10
Energy kJ
21
13
13
13
13
31
32
15
16
217
262
16
35
129
52
26
24
19
34
27
20
16
33
50
Swell 2
Height (m)
Direction
Period (s)
0.3
ESE
5
0.3
ESE
5
0.2
SSE
11
0.2
SSE
11
0.2
SSE
11
0.2
E
12
0.2
E
12
0.2
E
12
0.2
E
12
0.4
SE
10
0.3
SE
10
0.2
E
11
0.2
E
10
0.4
SE
10
0.6
W
5
0.4
W
5
0.4
SE
11
0.4
SE
11
0.5
SW
6
0.4
SW
6
0.4
SW
6
0.4
ENE
10
0.4
E
6
0.4
SE
10
Energy kJ
5
6
12
12
12
11
11
11
11
25
16
9
8
35
21
8
29
31
18
12
8
34
10
37
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
12
0.2
SSE
11
0.2
E
6
0.2
E
10
0.2
E
12
0.1
E
17
0.2
ENE
9
0.1
SE
16
0.1
E
16
0.2
ENE
12
0.2
ENE
11
0.1
S
12
0.1
S
12
0.2
ENE
10
0.4
SE
10
0.4
SE
11
0.3
W
4
0.3
W
4
0.4
SE
11
0.4
SE
11
0.3
ENE
10
0.4
SW
5
0.3
SE
10
0.4
SSW
13
Energy kJ
13
12
2
8
11
6
8
10
5
13
12
3
3
10
36
29
4
3
31
32
20
7
15
58
Wind waves
Height (m)
Direction
Period (s)
1.8
SW
7
2.5
SW
8
2.4
SW
8
2.3
SW
8
2.5
WSW
8
2.4
WSW
8
2.3
WSW
8
2.4
WSW
7
2.1
WSW
7
1.2
WNW
6
2.2
W
7
1.8
WSW
7
1.6
WSW
6
0.2
E
3
1.1
E
5
1.1
E
5
1
E
5
1
E
5
—
1
E
6
0.8
E
5
—
—
—
Energy kJ
298
717
746
661
861
790
696
558
408
87
439
268
201
1
51
65
53
53
—
60
36
—
—
—
Nearest Offshore or Glassy
Suruga Bay
Shizuoka
Akabane Long Beach
Shizuoka
Sakawa River
Kanagawa
Chigasaki Jetty
Kanagawa
Oiso Jetty
Kanagawa
Onjuku
Chiba
Sakawa River
Kanagawa
Niijima - Awaii
Izu Islands
Suruga Bay
Shizuoka
Suruga Bay
Shizuoka
Omaezaki
Shizuoka
Keta Reef Oshima
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Keta Reef Oshima
Izu Islands
Kurihama
Kanagawa
Akabane Long Beach
Shizuoka
Akabane Long Beach
Shizuoka
Akabane Long Beach
Shizuoka
Tainohama
Shikoku
Omaezaki
Shizuoka
Keta Reef Oshima
Izu Islands
Keta Reef Oshima
Izu Islands
Suruga Bay
Shizuoka
Suruga Bay
Shizuoka
Rating
(10 max)
2
4
1
2
3
3
1
3
1
1
3
1
2
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
2
94
103
127
112
202
103
104
2
2
13
104
236
104
145
94
94
94
352
13
104
104
2
2
Best forecast wave conditions in Shizuoka
Suruga Bay
Akabane Long Beach
Suruga Bay
Suruga Bay
Omaezaki
Akabane Long Beach
Akabane Long Beach
Akabane Long Beach
Omaezaki
Suruga Bay
Omaezaki
Rating
(10 max)
2
4
1
1
3
1
1
1
1
1
1
Best forecast wave conditions in Japan
Nunoshima
Shikoku
Akabane Long Beach
Shizuoka
Kaifu Rivermouth
Shikoku
Kaifu Rivermouth
Shikoku
Inamuragasaki
Kanagawa
Fukuoka
Kyu Shu
Kuminatu
Chiba
Mera
Chiba
Kuminatu
Chiba
Matsube Bay
Chiba
Omaezaki
Shizuoka
Takegashima
Shikoku
Kaiser's (Hachijojima Island)
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Big Ben
Chiba
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Kuminatu
Chiba
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Rating
(10 max)
2
4
2
3
3
3
3
4
2
2
3
1
2
2
2
2
2
3
1
1
1
3
2
2
Header Global
Trial Harbour
Australia
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Buchupureo
Chile
Etang-Sale
Reunion
Etang-Sale
Reunion
Etang-Sale
Reunion
Otago Peninsula - Allans Beach
New Zealand
Etang-Sale
Reunion
Seconds (White Rock)
New Zealand
Ning Nong Point and Reef
New Zealand
Ning Nong Point and Reef
New Zealand
El Olon de Ilo
Peru
El Olon de Ilo
Peru
El Olon de Ilo
Peru
El Colegio
Chile
El Loa
Chile
El Loa
Chile
El Olon de Ilo
Peru
El Loa
Chile
Saint Leu
Reunion
Hanga Poukura
Chile
Rating
(10 max)
5
9
9
9
8
8
7
7
7
6
6
6
7
6
5
5
5
5
5
6
5
5
6
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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