Osaki Surf Break

Lat Long: 35.29° N 139.56° E

Osaki 48 hour detailed Surf Forecast

Issued: 2 am 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Osaki sea temperature is
28.1°C
1.7° 

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 (09 Sep):

  • Morning surf: Morning surf (09 Sep, local time) - 6ft (1.9m), 8s period with S swell.
  • Afternoon surf: Afternoon surf (09 Sep, local time) - 6ft (1.9m), 9s period with S swell.
  • Evening surf: Evening surf (09 Sep, local time) - 5ft (1.5m), 9s period with S swell.

The current surf forecast for Osaki at 8AM is: 1.9m 8s primary swell from a South-southwest direction and 0.1m 12s secondary swell from a East direction, 0.1m 12s secondary swell from a Southeast direction (forecast issued at 02:00am September 09). The wind direction is predicted to be onshore.

Time (JST) & DateWave HeightWave Period
Morning (09 Sep)6ft (1.9m)8s
Afternoon (09 Sep)6ft (1.9m)9s
Evening (09 Sep)5ft (1.5m)9s

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


Short Range Forecast

Heavy rain (total 41mm), heaviest during Wed night. Warm (max 29°C on Wed afternoon, min 19°C on Thu afternoon). Winds decreasing (fresh winds from the SW on Wed morning, light winds from the NNE by Fri morning).

Wednesday
9
Thursday
10
Friday
11
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
2
1
0
0
0
0
0
1
1
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)
1.5
S
9
2
S
8
2
S
8
1.9
S
8
1.9
S
9
1.9
S
9
2.5
SSW
9
1.5
S
9
1.3
S
9
1.2
S
9
1
S
9
0.9
S
8
0.8
S
8
0.8
S
8
0.7
S
8
0.6
S
8
0.6
S
8
0.6
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.5
S
8
0.6
S
7
0.6
S
7
Wave Graph
Metric surfscale
Energy kJ
380
496
522
512
549
562
1070
348
258
220
146
113
88
84
63
46
45
44
29
28
28
29
40
40
Wind (km/h)
40
SSW
35
SW
35
SW
35
SW
30
SW
25
SW
30
N
35
NE
35
NNE
30
NNE
30
NNE
25
NE
25
NNE
25
NNE
25
NNE
25
NNE
25
NNE
20
NNE
20
NNE
15
NNE
15
NNE
15
NNE
20
NNE
20
NNE
Wind State
on
on
on
on
on
on
cross-off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
off
High Tide
2:05AM1.36m
4:34PM1.41m
3:13AM1.43m
4:57PM1.44m
4:08AM1.50m
5:19PM1.47m
Low Tide
9:11PM1.08m
9:25AM0.32m
9:53PM0.96m
10:09AM0.31m
10:28PM0.82m
10:49AM0.32m
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
light rain
light rain
mod rain
cloud
cloud
cloud
light rain
mod rain
light rain
light rain
light rain
light rain
light rain
cloud
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:18
5:20
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:58
5:57
5:55
 mm
2
2
1
3
4
7
1
7
4
1
3
3
1
1
1
4
1
Temp °C
27
28
28
28
28
29
24
22
21
21
21
20
20
19
20
20
19
19
19
20
20
20
20
21
Feels °C
26
27
27
27
28
31
23
20
17
18
19
17
17
17
19
19
17
18
18
20
20
20
20
21
  • 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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