Osaki Surf Break

Lat Long: 35.29° N 139.56° E

Osaki 48 hour detailed Surf Forecast

Issued: 2 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Osaki sea temperature is
27.5°C
1.3° 

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


How big are the waves at Osaki today (12 Sep):

  • Morning surf: Morning surf (12 Sep, local time) - 1.5ft (0.4m), 7s period with SSW swell.
  • Afternoon surf: Afternoon surf (12 Sep, local time) - 1.5ft (0.4m), 7s period with SSW swell.
  • Evening surf: Evening surf (12 Sep, local time) - 1ft (0.3m), 7s period with SSW swell.

The current surf forecast for Osaki at 6AM is: 0.4m 8s primary swell from a South-southwest direction and 0.1m 10s secondary swell from a Southeast direction (forecast issued at 02:00am September 12). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (JST) & DateWave HeightWave Period
Morning (12 Sep)1.5ft (0.4m)7s
Afternoon (12 Sep)1.5ft (0.4m)7s
Evening (12 Sep)1ft (0.3m)7s

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


Short Range Forecast

Light rain (total 6mm), mostly falling on Sat morning. Warm (max 27°C on Mon morning, min 20°C on Sat morning). Winds increasing (calm on Sun morning, fresh winds from the S by Mon afternoon).

Saturday
12
Sunday
13
Monday
14
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
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
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
SSW
8
0.4
SSW
8
0.4
SSW
8
0.4
SSW
7
0.4
SSW
7
0.4
SSW
7
0.4
SSW
7
0.3
SSW
7
0.3
SSW
7
0.3
SSW
7
0.3
SSW
7
0.2
SSW
7
0.3
SE
9
0.4
SSW
7
0.4
SE
8
0.4
SE
8
0.4
SE
8
0.4
SE
7
0.4
SSE
7
0.4
SE
7
0.3
SE
9
0.9
S
4
0.9
SSW
4
0.7
SSW
4
Wave Graph
Metric surfscale
Energy kJ
19
19
19
18
18
18
17
9
9
9
9
5
12
15
18
16
15
14
16
11
12
28
31
18
Wind (km/h)
15
NNE
20
NNE
20
NNE
15
NNE
20
NNE
15
NNE
15
NNE
15
NNE
15
NNE
10
NNE
10
NNE
10
NE
5
SSE
15
S
20
S
20
SSW
15
SSW
15
SW
15
SSW
20
SSW
30
S
35
S
30
SSW
20
SSW
Wind State
off
off
off
off
off
off
off
off
off
off
off
off
glassy
on
on
on
on
on
on
on
on
on
on
on
High Tide
4:56AM1.56m
5:41PM1.48m
5:41AM1.58m
6:03PM1.50m
6:24AM1.58m
6:25PM1.51m
Low Tide
11:01PM0.69m
11:24AM0.37m
11:34PM0.56m
11:58AM0.45m
00:08AM0.45m
12:29PM0.55m
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:22
5:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:53
5:52
5:51
 mm
2
3
2
3
1
Temp °C
20
20
20
20
20
21
22
22
22
22
22
22
23
24
25
25
25
25
25
26
27
27
27
26
Feels °C
21
20
20
20
20
22
23
23
24
24
24
24
26
26
26
27
27
27
27
27
26
26
27
27
  • 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 

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Osaki 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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