Katahama Surf Break

Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 pm 04 Jul 2026 (local time)

Forecast update in  hr  min

Today's Katahama sea temperature is
23.8° C

1.2°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 (05 Jul):

  • Morning surf: Morning surf (05 Jul, local time) - 2.5ft (0.8m), 5s period with SE swell.
  • Afternoon surf: Afternoon surf (05 Jul, local time) - 3ft (0.9m), 5s period with SE swell.
  • Evening surf: Evening surf (05 Jul, local time) - 3ft (0.9m), 6s period with ESE swell.

The current surf forecast for Katahama at 3AM is: 0.3m 8s primary swell from a East-southeast direction and 0.4m 3s secondary swell from a East-southeast direction (forecast issued at 08:00pm July 04). An open ocean swell of 0.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & DateWave HeightWave Period
Morning (05 Jul)2.5ft (0.8m)5s
Afternoon (05 Jul)3ft (0.9m)5s
Evening (05 Jul)3ft (0.9m)6s

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

Heavy rain (total 29mm), heaviest during Sat night. Warm (max 25°C on Tue afternoon, min 21°C on Sat night). Wind will be generally light.

Sat
4
Sunday
5
Monday
6
Tuesday
7
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
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
2
2
1
3
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
E
8
0.3
ESE
8
0.3
ESE
9
0.3
ESE
8
0.8
ESE
4
0.8
SE
5
0.8
SE
5
0.9
SE
5
1
SE
6
0.9
ESE
6
1.1
ESE
6
0.4
SE
17
0.5
SE
16
0.6
SE
16
0.6
SSE
15
0.6
SE
15
0.8
SE
14
0.8
SE
14
0.8
SE
13
0.8
SE
13
0.9
SE
13
0.7
SE
18
1.2
SSE
17
1.6
SE
16
Wave Graph
Metric surfscale
Energy kJ
13
14
15
14
17
25
29
41
66
65
87
107
124
196
144
171
231
221
212
235
265
323
744
1335
Wind (km/h)
5
SW
5
S
10
E
15
ENE
15
NE
20
NE
20
ENE
15
E
10
E
10
ENE
10
ENE
15
NE
15
NE
15
NE
15
NE
15
NE
20
NE
25
NE
20
NE
15
NNE
15
NNE
15
NE
15
NE
10
ENE
Wind State
cross
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross
cross-on
cross
cross
cross
cross
cross
cross
cross
cross
cross-off
cross-off
cross
cross
cross-on
High Tide
8:51PM1.60m
8:22AM1.41m
9:32PM1.58m
9:25AM1.30m
10:17PM1.55m
10:51AM1.20m
Low Tide
3:00AM0.81m
2:52PM0.48m
3:59AM0.77m
3:36PM0.64m
5:07AM0.72m
light rain
light rain
light rain
light rain
light rain
light rain
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
4:39
—
—
—
—
—
—
—
4:39
—
—
—
—
—
—
—
4:39
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
—
—
—
—
—
—
—
7:02
—
—
—
—
—
—
—
7:02
—
—
—
—
—
—
7:02
 mm
2
4
4
1
2
1
—
—
—
—
—
—
—
4
2
3
3
4
1
—
—
—
—
—
Temp °C
24
22
21
21
21
22
24
24
23
23
23
22
22
21
21
21
21
21
21
22
22
22
23
25
Feels °C
27
25
23
22
22
22
24
25
25
25
25
23
23
22
22
22
21
20
21
22
23
23
23
26
Swell 1
Height (m)
Direction
Period (s)
0.4
SSW
6
0.3
ESE
8
0.4
SW
6
0.4
SW
6
0.2
ESE
11
0.8
SE
5
0.8
SE
5
0.9
SE
5
1
SE
6
0.9
ESE
6
1.1
ESE
6
1
ESE
6
0.9
ESE
6
0.9
ESE
7
0.9
ESE
7
0.9
ESE
7
0.9
ESE
7
0.8
SE
14
0.8
SE
13
0.9
SW
6
1
SW
7
0.9
SW
7
1.2
SSE
17
1.6
SE
16
Energy kJ
15
14
9
9
11
25
29
41
66
65
87
85
70
79
79
82
91
221
212
64
89
82
744
1335
Swell 2
Height (m)
Direction
Period (s)
0.3
E
8
0.4
SW
6
0.3
ESE
9
0.3
ESE
8
0.3
SW
6
0.3
E
10
0.3
ESE
8
0.5
SW
6
0.6
SW
7
0.7
SW
7
0.6
SW
7
0.6
SW
7
0.6
SW
7
0.6
SE
16
0.6
SSE
15
0.6
SE
15
0.8
SE
14
0.5
SE
11
0.8
SW
6
0.8
SE
13
0.9
SE
13
0.8
SE
12
0.8
SW
7
0.8
SW
7
Energy kJ
13
10
15
14
5
19
14
19
35
44
28
28
28
196
144
171
231
59
40
235
265
197
57
55
Swell 3
Height (m)
Direction
Period (s)
0.2
SSE
9
0.2
S
5
0.2
ESE
11
0.2
ESE
11
0.1
SE
8
0.2
WSW
6
0.3
SW
6
0.3
ESE
10
0.2
ESE
10
0.2
ESE
10
0.2
ESE
10
0.4
SE
17
0.5
SE
16
0.5
SW
7
0.4
SW
6
0.5
SE
12
0.4
SW
6
0.5
SW
6
0.5
SE
11
0.8
E
7
0.8
ESE
7
0.7
SE
18
0.8
SE
12
0.7
ESE
8
Energy kJ
8
2
12
11
3
3
5
19
10
10
11
107
124
21
14
68
13
18
57
66
71
323
167
58
Wind waves
Height (m)
Direction
Period (s)
0.2
ESE
3
—
0.2
ESE
3
0.4
ESE
3
0.8
ESE
4
0.5
NE
3
0.6
NE
3
0.6
NE
4
0.6
NE
3
0.4
NE
3
—
—
—
—
—
—
—
0.9
ESE
7
1
E
7
1.1
E
7
—
—
—
0.1
S
7
Energy kJ
1
—
1
4
17
5
9
8
7
4
—
—
—
—
—
—
—
84
103
131
—
—
—
1
Nearest Offshore or Glassy
Ohara
Chiba
Ohara
Chiba
Ohara
Chiba
Ohara
Chiba
Ohara
Chiba
Ohara
Chiba
Hashikui Bay
Shikoku
Santos (Hachijojima Island)
Izu Islands
Kaiser's (Hachijojima Island)
Izu Islands
Keta Reef Oshima
Izu Islands
Nagai Point
Kanagawa
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Suruga Bay
Shizuoka
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Akabane Long Beach
Shizuoka
Akabane Long Beach
Shizuoka
Omaezaki
Shizuoka
Suruga Bay
Shizuoka
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Omaezaki
Shizuoka
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
2
2
1
2
2
2
2
2
2
2
3
3
4
Distance (km)
208
208
208
208
208
208
355
236
236
104
137
13
13
2
13
13
13
94
94
13
2
13
13
13
Best forecast wave conditions in Shizuoka
Omaezaki
Omaezaki
Omaezaki
Omaezaki
Shimoda Yamatoken (Tatado Hama)
Shimoda Yamatoken (Tatado Hama)
Akabane Long Beach
Akabane Long Beach
Akabane Long Beach
Akabane Long Beach
Akabane Long Beach
Omaezaki
Omaezaki
Rating
(10 max)
2
2
2
2
2
2
2
2
2
3
3
3
4
Best forecast wave conditions in Japan
Tsurigasaki Surfing Beach (Tokyo 2020)
Chiba
Takanabe
Kyu Shu
Osaki Point
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Nunoshima
Shikoku
Takanabe
Kyu Shu
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Keta Reef Oshima
Izu Islands
Niyodo Rivermouth
Shikoku
Omaezaki
Shizuoka
Kaiser's (Hachijojima Island)
Izu Islands
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Kaiser's (Hachijojima Island)
Izu Islands
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Niyodo Rivermouth
Shikoku
Kaiser's (Hachijojima Island)
Izu Islands
Niyodo Rivermouth
Shikoku
Takegashima
Shikoku
Nunoshima
Shikoku
Rating
(10 max)
1
1
2
1
1
1
1
1
1
1
1
2
2
2
2
3
3
3
3
3
4
3
4
4
Header Global
Cyclops
Australia
Cyclops
Australia
Cyclops
Australia
Cat Bay (Shelly Beach)
Australia
Lebu
Chile
Lebu
Chile
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Trial Harbour
Australia
Easter Reef
Australia
Blaketown Wedge
New Zealand
Blaketown Wedge
New Zealand
Desperation Point
New Zealand
Arawhata
New Zealand
Anawhata Road (Oaonui)
New Zealand
Anawhata Road (Oaonui)
New Zealand
Desperation Point
New Zealand
Cobblestones
Australia
Cobblestones
Australia
Cobblestones
Australia
Cobblestones
Australia
Cobblestones
Australia
Trial Harbour
Australia
Rating
(10 max)
5
5
5
5
5
5
9
9
9
8
7
5
5
6
5
5
5
5
9
8
8
8
7
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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