Osaki Surf Break

Lat Long: 35.29° N 139.56° E

Osaki 48 hour detailed Surf Forecast

Issued: 2 am 20 Jul 2026 (local time)

Forecast update in  hr  min

Today's Osaki sea temperature is
26.1° C
0.5° 

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 (20 Jul):

  • Morning surf: Morning surf (20 Jul, local time) - 0.5ft (0.2m), 9s period with SSE swell.
  • Afternoon surf: Afternoon surf (20 Jul, local time) - 0.5ft (0.2m), 8s period with SSE swell.
  • Evening surf: Evening surf (20 Jul, local time) - 1.5ft (0.5m), 4s period with SSW swell.

The current surf forecast for Osaki at 5AM is: 0.2m 8s primary swell from a South-southeast direction and 0.2m 3s secondary swell from a South-southwest direction, 0.3m 4s secondary swell from a South direction (forecast issued at 02:00am July 20). The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (20 Jul)0.5ft (0.2m)9s
Afternoon (20 Jul)0.5ft (0.2m)8s
Evening (20 Jul)1.5ft (0.5m)4s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Wed night. Warm (max 29°C on Tue morning, min 27°C on Mon night). Wind will be generally light.

Monday
20
Tuesday
21
Wednesday
22
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
S
4
0.2
SSE
8
0.2
SSE
9
0.2
SSE
9
0.2
SSE
9
0.2
SSE
8
0.5
S
4
0.5
SSW
4
0.5
SSW
4
0.7
SW
4
0.6
SW
4
0.2
SSE
8
0.2
SSE
8
0.2
ESE
11
0.5
S
4
0.2
E
11
0.5
SSW
4
0.7
SW
4
0.5
SW
4
0.3
SSW
4
0.3
SSW
4
0.4
SSW
3
0.4
SSW
3
0.4
SSW
4
Wave Graph
Metric surfscale
Energy kJ
5
6
8
7
7
7
7
8
9
15
9
6
6
12
7
9
10
17
9
4
3
5
5
5
Wind (km/h)
15
SSW
10
SSW
5
SSW
5
S
15
S
20
SSW
20
S
15
SSW
15
SSW
10
SSW
5
SSW
5
S
15
S
20
SSW
20
S
15
S
10
SSW
5
W
5
N
5
ESE
15
S
20
S
20
SSW
10
S
Wind State
on
on
on
on
on
on
on
on
on
on
glassy
on
cross-on
on
on
on
on
glassy
off
glassy
on
on
on
on
High Tide
8:05AM1.36m
9:04PM1.41m
9:03AM1.27m
9:33PM1.40m
10:14AM1.18m
Low Tide
2:24AM0.71m
2:31PM0.43m
3:12AM0.65m
3:07PM0.59m
4:07AM0.58m
3:45PM0.75m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
4:41
4:41
4:41
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:53
6:52
 mm
Temp °C
27
27
27
28
28
28
28
28
27
27
27
29
29
29
28
28
28
28
28
29
29
29
28
28
Feels °C
30
30
31
32
30
30
31
31
30
31
32
34
32
32
31
32
33
33
33
34
32
32
31
32
  • 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 

FREE! Surf-Forecast.com widget for your website

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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